Tag Archives: surface

Science Research Technology

Efficient coating of O-rings

The new Rotamat system for small batches allows the efficient coating of work piece volumes from 2 to 15 liters.

Efficient coating of O-rings

The new Rotamat R 60 is suitable for coating of mass produced small parts made from elastomers/metal

At the DKT exhibition Walther Trowal presents the newly designed Rotamat R 60 for coating of mass-produced small parts like, for example, O-rings. This system was specifically developed for users who are increasingly switching to smaller batches and, generally, lower batch volumes. However, the R 60 offers all the features found in its larger „siblings“!

The new Rotamat R 60 is the first coating system on the market that allows efficient processing of work piece volumes between 2 and 15 liters. With a diameter of only 600 mm the drum is ideally suited for small batch volumes. The inclination of the drum is adjustable within a wide angle allowing its adjustment to different work piece geometries. It allows the intensive mixing of the parts in the drum and guarantees complete, optimum coverage by the spray nozzles.

With the new machine Walther Trowal takes into account that in connection with just-in-time requirements many companies generally place purchase orders in smaller work piece quantities.

Frank Siegel, sales manager „coating technology“ at Walther Trowal is now able to offer the right machine for practically every conceivable application: „Many of our customers want to coat small part batches but do not want to give up the high technical standard we have implemented in our larger units R 80 and R 90C. With the newly developed R 60 they can now efficiently coat small batches without having to invest in a larger machine.“

For the Rotamat R 60 the Trowal engineers have utilized the proven components of the larger machines: For example, the inlet and exhaust air system, the explosion protected LED lighting inside the drum and the mounting of the drum.

Here are some details of the innovative features

Precise control of the inlet air temperature

The measuring point for the inlet air temperature is immediately at the drum entry. Compared to measuring the temperature with a sensor behind the air heating unit the measurement is now much more direct allowing extremely precise temperature readings.

Eco-friendly operation

For typical applications – today 90% of all customers are using water-based paint – Walther Trowal supplies a specially adapted filtering system. For coating tasks with solvent-based paints the new R 60 – like with the bigger Rotamat units – can be equipped with a four stage exhaust air filtering system with a Papp filter, a filter mat and two pocket filters.

Low energy requirements

The capacity of the heating unit was adapted to the smaller drum diameter, resulting in considerably lower overall energy requirements. Depending on the technical characteristics of the work pieces and/or paint Walther Trowal can equip the machine with PID or pulse control for the heating unit. The result: Customers can also use paint types that do not allow going over or below certain operating temperatures.

Walther Trowal at the DKT 2018
July 2 – 5, 2018 | Nuremberg, Germany
Hall 12 , Booth 247

Facts about Walther Trowal

For 85 years Walther Trowal has been a pioneer and market leader in various surface treatment technologies. The company offers modular and custom engineered solutions for a wide range of surface treatment problems.

Initially only making vibratory finishing equipment, over the years Walther Trowal has continuously broadened its product range and today offers a wide portfolio of equipment and services for improving all kinds of surfaces, e.g. mass finishing, part cleaning, shot blasting and drying of a wide spectrum of work pieces, last but not least, the coating of mass produced small parts.

Walther Trowal offers not only various types of equipment but complete surface treatment systems: By linking the various equipment modules and automating the complete process, we are able to precisely adapt our process technologies to the technical requirements of our customers. This also includes various types of peripheral equipment and process water cleaning and recycling systems. Of course, we also offer comprehensive pre- and after-sale service like sample processing in one of our demonstration labs and global repair and maintenance service.

Walther Trowal serves many customers in many industries around the world. For example, in the automotive and aerospace industry, medical engineering and wind power generation.

Company-Contact
Walther Trowal GmbH & Co.KG
Georg Harnau
Rheinische Str. 35-37
42781 Haan, Germany
Phone: +49 2129.571-0
Fax: +49 2129.571-225
E-Mail: info@walther-trowal.de
Url: http://www.walther-trowal.de

Press
VIP Kommunikation
Regina Reinhardt
Dennewartstraße 25-27
52068 Aachen, Germany
Phone: +49.241.89468-24
Fax: +49.241.89468-44
E-Mail: reinhardt@vip-kommunikation.de
Url: http://www.vip-kommunikation.de

Science Research Technology

Walther Trowal opens the „North American Tech & Training Centre“

Mass finishing, deburring, polishing, shot blasting and coating: The branch in Michigan now has its own process development center and offers comprehensive service for North- and South-America

Walther Trowal opens the  "North American Tech & Training Centre"

In the Test & Training Center: Loading of work pieces into a CF rotary vibrator for processing.

To cope with the increasing business volume in the Americas and to better serve the American customers in the field of surface finishing and preparation, Walther Trowal is expanding its sales branch in Grand Rapids, established in 2005, with additional manpower and a process development lab. Recently the Walther Trowal LLC has officially opened its „North American Tech & Training Center“.

The company, initially established as a sales office, has become an operation with its own test center, after-sales service activities and a sizable warehouse for compounds, media and spare parts. Effective immediately two recently hired application and sales engineers, stationed in Grand Rapids, are now supporting the already existing nine distributors in the US and Mexico, including our sales office in Queretaro, Mexico.

Moreover, the newly established process development lab, equipped with a range of different finishing machines, now offers American customers the possibility to test the Walther Trowal equipment with their work pieces directly in the United States and to optimize their finishing processes.

Ken Raby, Vice President and General Manager of the Walther Trowal LLC, is now in a position to serve his North-American customers even better: „We consider close proximity to our customers as essential to our future success. With our expanding sales and technical base in Grand Rapids we can adapt our processes and systems much better and, especially, much faster to the requirements of the American users. Especially in the field of mass finishing it is essential to develop and optimize the various finishing processes for our customers through processing trials under manufacturing conditions in our test lab“.

The new „Tech & Training Centre“ is also equipped with a lab for coating technology. This allows the customers to test various coating methods and develop the right process for their coating requirements with the „Trowal Coating“ technology.

Christoph Cruse, general sales manager at Walther Trowal in Haan, explains why the company is expanding its presence in North-America: „The North-American market is somewhat different from Europe – Especially in the United States the automobile industry is still a key player, but is subject to enormous cost pressures. That is why it is essential for us to offer our customers fast and competent service. Long reaction or downtimes are no longer acceptable! In addition, we also see a tremendous potential in the rapidly expanding aerospace industry and medical engineering.“

In Latin America Walther Trowal has also expanded its presence with the recently opened sales office in Queretaro, Mexico. The local staff is supported by the knowhow and service of the colleagues in Grand Rapids.

The capacity of the new, large warehouse ensures that the Walther Trowal LLC can offer short delivery times for equipment and consumables. The mass finishing, shot blasting and coating equipment as well as the plastic finishing media are still supplied from the Walther Trowal headquarters in Germany. Ceramic media continue to be manufactured at the plant in Stoke-on-Trent, Great Britain.

Facts about Walther Trowal

For more than 85 years Walther Trowal has offered modular and custom engineered solutions for a wide range of surface treatment problems.

Initially only making vibratory finishing equipment, over the years Walther Trowal has continuously broadened its product range and today offers a wide portfolio of equipment and services for improving all kinds of surfaces, e.g. mass finishing, part cleaning, shot blasting and drying of a wide spectrum of work pieces, last but not least, the coating of mass produced small parts.

Walther Trowal offers not only various types of equipment but complete surface treatment systems: By linking the various equipment modules and automating the complete process, we are able to precisely adapt our process technologies to the technical requirements of our customers. This also includes various types of peripheral equipment and process water cleaning and recycling systems. Of course, we also offer comprehensive pre- and after-sale service like sample processing in one of our demonstration labs and global repair and maintenance service.

Walther Trowal serves many customers in many industries around the world. For example, in the automotive and aerospace industry, medical engineering and wind power generation.

Company-Contact
Walther Trowal GmbH & Co.KG
Georg Harnau
Rheinische Str. 35-37
42781 Haan, Germany
Phone: +49 2129.571-0
Fax: +49 2129.571-225
E-Mail: info@walther-trowal.de
Url: http://www.walther-trowal.de

Press
VIP Kommunikation
Regina Reinhardt
Dennewartstraße 25-27
52068 Aachen, Germany
Phone: +49.241.89468-24
Fax: +49.241.89468-44
E-Mail: reinhardt@vip-kommunikation.de
Url: http://www.vip-kommunikation.de

Science Research Technology

Walther Trowal: New Rotamat coater for small batches

Coating of mass-produced small parts: Effective coating of part batches from 2 to 15 l (0.5 to 4 gallons)

Walther Trowal: New Rotamat coater for small batches

The new Rotamat R 60 from Walther Trowal was developed for batches of up to 15 l (4 gallons)

At the PaintExpo 2018 Walther Trowal introduces the new Rotamat R 60 for coating mass-produced small parts. It allows the effective processing of small batches of, among others, metal parts with relatively high bulk weights. Even though specifically designed for small batches, the R 60 coater offers all the functional features of its larger „siblings“.

With the new Rotamat R 60 Walther Trowal is rounding off its equipment range for coating mass produced bulk parts down to very small batches. For the very first time it is now possible to effectively coat small part volumes of up to 15 liters (4 gallons).

With a drum diameter of only 600 mm (24″) this coater is ideally suited for processing small part batches like, for example, in the aerospace industry, where batch sizes rarely exceed 50 l (13 gallons). Of course, this also includes metallic work pieces with high bulk weights, which might get damaged in larger drums through the intensive part-on-part contact. These include spikes for snow tires, bullets and balancing weights.

Frank Siegel, the sales manager for „coating technologies“ at Walther Trowal can now offer the right machine for practically any coating application: „We have many customers who must coat small part batches but do not want to give up the high quality standard we achieve with our Rotamat models R 80 and R 90. With the new R 60 coater you can now effectively process small part batches without having to invest in a larger machine“.

The Walther Trowal R 60 Rotamat coater, introduced at the PaintExpo 2018 includes all the proven design features of the larger machines like the supply and exhaust air handling system, the explosion-proof LED lighting of the drum interior and the drum drive shaft mounting.

Technical details
Precise control of the supply air temperature

The temperature of the supply air is measured directly at the entry point into the drum. This is considerably more precise than the previous measuring point, where the sensor was placed at the exit of the heating unit. The result: A much more accurate control of the air temperature in the drum.

Eco-friendly operation

Like the larger models, the Rotamat R 60 incorporates a 4-stage exhaust air filtering system with a paper labyrinth filter, a filter mat and two bag filters.
Low energy consumption

Walther Trowal sized the heating unit to reflect the smaller drum diameter. This resulted in a considerably lower heat input. Depending on the physical properties of the work pieces the R 60 Rotamat can be equipped with a PID or step control of the heating unit. The result: The customers can now use coating materials, which cannot exceed or fall below certain temperatures.

Suitable for high solvent concentrations

The supply air volume in the new R 60 coater is measured with a Pitot tube. This allows the precise calculation of the solvent concentration and facilitates the certification of the machine for a high solvent throughput. This is very important for special applications like, for example, the coating of parts with an adhesion primer.

Walther Trowal at the PaintExpo 2018
17. to 20. April 2018 | Karlsruhe/Germany
Hall 2, Stand 2310

For 85 years Walther Trowal has been a pioneer and market leader in various surface treatment technologies. The company offers modular and custom engineered solutions for a wide range of surface treatment problems.

Initially only making vibratory finishing equipment, over the years Walther Trowal has continuously broadened its product range and today offers a wide portfolio of equipment and services for improving all kinds of surfaces, e.g. mass finishing, part cleaning, shot blasting and drying of a wide spectrum of work pieces, last but not least, the coating of mass produced small parts.

Walther Trowal offers not only various types of equipment but complete surface treatment systems: By linking the various equipment modules and automating the complete process, we are able to precisely adapt our process technologies to the technical requirements of our customers. This also includes various types of peripheral equipment and process water cleaning and recycling systems. Of course, we also offer comprehensive pre- and after-sale service like sample processing in one of our demonstration labs and global repair and maintenance service.

Walther Trowal serves many customers in many industries around the world. For example, in the automotive and aerospace industry, medical engineering and wind power generation.

Company-Contact
Walther Trowal GmbH & Co.KG
Frank Siegel
Rheinische Str. 35-37
42781 Haan/Germany
Phone: +49 2129.571-0
Fax: +49 2129.571-225
E-Mail: info@walther-trowal.de
Url: http://www.walther-trowal.de

Press
VIP Kommunikation
Regina Reinhardt
Dennewartstraße 25-27
52068 Aachen/Germany
Phone: +49.241.89468-24
Fax: +49.241.89468-44
E-Mail: reinhardt@vip-kommunikation.de
Url: http://www.vip-kommunikation.de

Politics Law Society

Walther Trowal cuts processing times for finishing of blisks from several days to a few hours

Surface finishing of components for the aerospace industry

Walther Trowal cuts processing times for finishing of blisks from several days to a few hours

The work bowl of the “CM” rotary vibrator.

For the efficient surface finishing of high value work pieces like blisks for airplane and land based turbines, Walther Trowal has redesigned its CM vibratory system. It ensures that the work pieces receive a uniform, homogeneous high quality finish with absolutely repeatable results.

The surface finish of blisks („Blade Integrated Disks“) in airplane and other turbines affects to a large extent the airflow characteristics and, thus, the overall efficiency, fuel consumption and noise emissions.

To date the surface finishing of blisks was done manually with grinding disks and other manually operated tools. Due to the „human factor“ the quality of the final finish could greatly vary between work pieces. Frequently, it could even happen that certain surface areas were not finished at all.

For the consistent and high quality finishing of circular high value components Walther Trowal redesigned the rotary vibrator „CM“ in close cooperation with leading turbine manufacturers to make it more suitable for treating all kinds of turbine components.

The „CM“ system allows deburring and general surface improvement of components with diameters of up to 980 mm.

Single work pieces are mounted to the inner dome of the processing bowl. The height of the inner dome itself has been drastically shortened. After grinding media has been filled into the bowl, a vibratory motor causes the complete work bowl to vibrate. This causes a constant „rubbing“ of the media against the fixed work piece. Since the „rubbing“ action is highly homogeneous, a uniform, even finish on all surface areas of the disk and blades is achieved. After completion of the process the surface roughness readings amount to Ra = 0.2 to 0.4 µm.

Starting with an initial surface roughness of Ra = 4 to 5 µm, the desired finishing results are achieved within about five to six hours. Compared to this innovative method the manual finishing of blisks can take several days.

Christoph Cruse, sales manager at Walther Trowal, is commenting on the special conditions prevailing in the aerospace industry: „Especially for the production of turbine components any manual manufacturing operations must be viewed with great skepticism, because the quality of the work will vary greatly. With our new finishing machine we have completely eliminated the vagaries of the human factor. And, we can reduce the finishing times for blisks from several days to just a few hours“.

For finishing of blisks Walther Trowal is recommending the special finishing media, type V 2030. This media produces very smooth surface finishes on materials and shapes, which are typical for blisks. Of course, the V 2030 media is globally approved for the aerospace industry.

Walther Trowal at Singapore Airshow, February 6 – 11 2018
Booth L82

For 85 years Walther Trowal has been a pioneer and market leader in various surface treatment technologies. The company offers modular and custom engineered solutions for a wide range of surface treatment problems.

Initially only making vibratory finishing equipment, over the years Walther Trowal has continuously broadened its product range and today offers a wide portfolio of equipment and services for improving all kinds of surfaces, e.g. mass finishing, part cleaning, shot blasting and drying of a wide spectrum of work pieces, last but not least, the coating of mass produced small parts.

Walther Trowal offers not only various types of equipment but complete surface treatment systems: By linking the various equipment modules and automating the complete process, we are able to precisely adapt our process technologies to the technical requirements of our customers. This also includes various types of peripheral equipment and process water cleaning and recycling systems. Of course, we also offer comprehensive pre- and after-sale service like sample processing in one of our demonstration labs and global repair and maintenance service.

Walther Trowal serves many customers in many industries around the world. For example, in the automotive and aerospace industry, medical engineering and wind power generation.

Company-Contact
Walther Trowal GmbH & Co.KG
Martin Huebner
Rheinische Str. 35-37
42781 Haan/Germany
Phone: +49 2129.571-209
Fax: +49 2129.571-225
E-Mail: m.huebner@walther-trowal.de
Url: http://www.walther-trowal.de

Press
VIP Kommunikation
Regina Reinhardt
Dennewartstraße 25-27
52068 Aachen/Germany
Phone: +49.241.89468-24
Fax: +49.241.89468-44
E-Mail: reinhardt@vip-kommunikation.de
Url: http://www.vip-kommunikation.de

Science Research Technology

Gentle finishing of extremely thin work pieces with Turbotron centrifugal disk finishing machines

Deburring, edge radiusing, surface smoothing and polishing of mass-produced work pieces

Gentle finishing of extremely thin work pieces with Turbotron centrifugal disk finishing machines

Walther Trowal offers fully automatic systems with work piece loading and unloading

With the innovative option „gap rinsing“ the new Turbotron centrifugal disk finishing machines from Walther Trowal are ideal for finishing extremely thin fine-blanked parts. The new machines lower the investment expenditures and offer high uptimes.

Walther Trowal is the first supplier of mass finishing equipment who brings a new line of TT centrifugal disk finishing machines to the market with spinner and wear ring completely made from polyurethane and a rinsing system for the gap between spinner and stationary work bowl. This system prevents thin parts getting caught in the gap and get damaged. The new TT machines are a cost effective, highly wear resistant alternative to conventional mass finishing machines, especially for processing very thin work pieces.

To date the removal of burs and radiusing of edges on thin, relatively small parts required the use of centrifugal disk machines with special spinners made from ceramic or tungsten carbide steel. To prevent thin parts getting caught in the gap between the rotating spinner and stationary work bowl the precise setting of the gap was crucial for achieving the required finishing results.

Since even minor damage of the delicate spinner could result in high repair costs, the engineers at Walther Trowal were looking for a more economic solution.

The recently developed gap rinsing system now allows utilizing the spinners and wear rings Walther Trowal has been employing in large quantities in its standard centrifugal disk machines. This helps to drastically reduce the equipment expenditures, because PU is much less complicated to handle than, for example, ceramic materials. In addition, the gap size can be easily adjusted with the proven standard gap setting system. The pressure created by the rinsing system ensures that thin parts can no longer be drawn into the gap between spinner and wear ring.

Contrary to other mass finishing systems for deburring and grinding of thin components the new disk machines are operating with high water level in the work bowl. This helps prevent the work pieces from sticking to each other or clinging to the wall of the work bowl.

Christoph Cruse, general sales manager at Walther Trowal, sees significant benefits for his customers: “ Our new machines represent an economic, low-wear solution. Ceramic materials used to date are relatively brittle and can easily chip! This can cause costly damage to spinner and wear ring. Since we have worked with polyurethane for many years, we are very familiar with this material. To come to the heart of the matter: We have developed a smart, cost effective solution that works great for our customers.“

Walther Trowal offers the option „gap rinsing“ across the complete range of Turbotron disk finishing machines, from simple stand-alone units with manual work piece loading and unloading to large, fully automatic systems with hydraulic loader, external vibratory screening machine and media return conveyor.

Background:

Surface finishing with Turbotron centrifugal disk finishing machines

The high processing intensity, typical for the Walther Trowal centrifugal disk finishing machines, is achieved by the highly intensive interaction between processing media and work pieces and the high pressure of the media on the work piece surface created by the centrifugal force of the rotating spinner.

The spinner rotates with a speed of between 60 and 250 U/min. The centrifugal force created by this movement pushes the mix of work pieces, media and process water up the inner wall of the stationary work bowl. Once it has lost its kinetic energy the work piece/media mix collapses back to the spinner, from where it is accelerated again.

Facts about Walther Trowal

Since 1931 Walther Trowal develops, manufactures and markets modular and custom engineered solutions in the field of surface finishing.

Initially only making vibratory finishing equipment, over the years Trowal has continuously broadened its product range and today offers a wide portfolio of equipment and services for improving all kinds of surfaces, e.g. mass finishing, part cleaning, shot blasting and drying of a wide spectrum of parts, last but not least, the coating of mass produced small parts.

Walther Trowal offers not only various types of equipment but complete surface treatment systems: By linking the various equipment modules and automating the complete process, we are able to precisely adapt our process technologies to the technical requirements of our customers. This also includes various types of peripheral equipment and process water cleaning and recycling systems. Of course, we also offer comprehensive pre- and after-sale service like sample processing in one of our demonstration labs and global repair and maintenance service.

Walther Trowal serves many customers in many industries around the world. For example, in the automotive and aerospace industry, medical engineering and wind power generation.

Firmenkontakt
Walther Trowal GmbH & Co.KG
Christoph Cruse
Rheinische Str. 35-37
42781 Haan/Germany
+49 2129.571-209
+49 2129.571-225
c.cruse@walther-trowal.de
http://www.walther-trowal.de

Pressekontakt
VIP Kommunikation
Regina Reinhardt
Dennewartstraße 25-27
52068 Aachen/Germany
+49.241.89468-24
+49.241.89468-44
reinhardt@vip-kommunikation.de
http://www.vip-kommunikation.de

Science Research Technology

Walther Trowal: An amusement park ride served as idea for gentle finishing of high cost work pieces

New drag finishing machine works with overlapping rotational movements.

Walther Trowal: An amusement park ride served as idea for gentle finishing of high cost work pieces

The “Octopus” ride we all know from amusement parks provided the idea for the new machines.

Trowal developed the new drag finisher line M-TMD for processing work pieces requiring perfect surface finishes. The work pieces, mounted to rotating satellite stations, undergo multiple overlapping, pre-programmed, rotational movements. This rotational variation produces optimum finishing results.

Walther Trowal developed the new drag finisher specifically for finishing high value components, which must be handled with extreme care.

Typical work piece examples from the medical engineering industry are hip and knee implants requiring a high gloss polish. In the aerospace industry turbine blades and other components must receive a first-class finish with precise edge radiusing and very smooth surfaces. Examples from the automotive industry include the vanes of turbo chargers, which must not be nicked or damaged during the finishing process.

Christoph Cruse, General Sales Manager at Walther Trowal, foresees a big demand at those customers, who produce high precision, high value components: „With our new equipment line we address precision component manufacturers, who want perfect surface finishes, and where any blemishes like scratches could require scrapping a part. We also target manufacturers demanding tolerances of just a few microns. For these work pieces the M-TMD drag finishers with their optimum flow characteristics open entirely new possibilities.“

The functional principle: A rotation within the rotation

In standard drag finishers the work pieces are mounted to rotating work stations and „dragged“ through the grinding or polishing media. This movement creates a high processing intensity and produces excellent results on many parts.

In the new machines the work stations consist of multi spindle heads with each spindle holding one work piece. In addition to the carousel and work station rotation each spindle has its own rotational movement. In other words: The spindles move in a circle within two larger circles formed by the carousel and work station rotation. This is similar to the movement of the cabins in „Octopus“ rides that can be found at any amusement park.

The drag finisher M-TMD 4 is equipped with 4 multi spindle heads (work stations) with each head containing 3 spindles. In the M-TMD 6 up to 18 work pieces can be processed at the same time.

The independently adjustable rotational speed and rotational direction of the spindle heads and spindles creates a wide range of different movement patterns. In addition, the spindle heads can be tilted in different angles. This allows adjusting the flow characteristics to the specific shape of the various work pieces. With the PLC controller multi stage processing programs can be easily implemented.

During the finishing process the work bowl is vibrating for the optimum mixing of the grinding or polishing media. This guarantees a high degree of process consistency.
The media fines and undersize media, along with the metal fines from the work pieces, are continuously discharged from the machine; another contribution towards process stability and consistency.

Form surface grinding to high gloss polishing

The new Trowal machines can be operated in wet as well as dry processing mode. For surface grinding and smoothing, as well as for certain polishing operations, compound and water are used. In the case of targeted edge radiusing with tolerances of a few micron, for example, hard metal drill bits and milling heads, a dry process with special grinding granulate is utilized. Dry processing with organic polishing media and paste is also suitable for high gloss polishing.

Multiple finishing steps, from pre-grinding all the way to the final polishing stage, can take place in one single machine without the need to remove and remount the work pieces to the work stations: One work bowl filled with a certain finishing media can be easily and quickly removed with a pallet truck and replaced with a bowl containing another media.

Processing trials guarantee proven results

The first unit of the new machine generation has been installed in the Walther Trowal test lab in Haan/Germany. It is available for processing trials with customer work pieces allowing the customers to prove their finishing process, before making an investment decision. This ensures that the customer specifications can be fully met. Once the trials have yielded a viable process, the work piece range and quantity is analyzed to determine machine type & size, media & compound type, process water treatment system and drying method.

Background:
Drag Finishing
The drag finishing technology, developed by Walther Trowal about 30 years ago, has been continuously refined and, today, is an established finishing method that is ten to twenty times more efficient than conventional mass finishing systems.
The work pieces are individually mounted to rotating work stations integrated into a rotating carousel. During the process the parts never touch each other. Once the parts are mounted, the carousel with the work stations is lowered into a work bowl filled with grinding or polishing media. The work stations with the mounted work pieces are then „dragged“ through the stationary media mass. This translates into a highly efficient use of the kinetic energy between work pieces and media.
The new machines of the M-TMD series enlarge this effect by the addition of a third rotational movement of the spindles.

Facts about Walther Trowal

Since 1931 Walther Trowal develops, manufactures and markets modular and custom engineered solutions in the field of surface finishing.

Initially only making vibratory finishing equipment, over the years Trowal has continuously broadened its product range and today offers a wide portfolio of equipment and services for improving all kinds of surfaces, e.g. mass finishing, part cleaning, shot blasting and drying of a wide spectrum of parts, last but not least, the coating of mass produced small parts.

Walther Trowal offers not only various types of equipment but complete surface treatment systems: By linking the various equipment modules and automating the complete process, we are able to precisely adapt our process technologies to the technical requirements of our customers. This also includes various types of peripheral equipment and process water cleaning and recycling systems. Of course, we also offer comprehensive pre- and after-sale service like sample processing in one of our demonstration labs and global repair and maintenance service.

Walther Trowal serves many customers in many industries around the world. For example, in the automotive and aerospace industry, medical engineering and wind power generation.

Firmenkontakt
Walther Trowal GmbH & Co.KG
Georg Harnau
Rheinische Str. 35-37
42781 Haan/Germany
+49 2129.571-209
+49 2129.571-225
g.harnau@walther-trowal.de
http://www.walther-trowal.de

Pressekontakt
VIP Kommunikation
Regina Reinhardt
Dennewartstraße 25-27
52068 Aachen/Germany
+49.241.89468-24
+49.241.89468-44
reinhardt@vip-kommunikation.de
http://www.vip-kommunikation.de

Science Research Technology

The new generation of Trowal continuous shot blast machines is in operation

A Mexican manufacturer of automotive aluminum die-cast components now operates five continuous shot blast systems from Walther Trowal.

The new generation of Trowal continuous shot blast machines is in operation

The new THM troughed belt continuous shot blast machine equipped with turbines with curved throwing.

Walther Trowal has recently commissioned a THM troughed belt continuous shot blast machine for a customer in Mexico that is equipped with a brand new generation of blast turbines. These turbines were specifically designed for shot blasting of aluminum components. With a considerably higher blast media throwing speed the new turbines produce significantly shorter cycle times than the predecessor models.

The Mexican customer already operates very successfully four continuous Trowal shot blast machines. Because of their excellent performance he chose to purchase another THM machine, when he had to expand his production capacity.

Up-and-coming: Aluminum, the gentle blast media

The increasing sales trend at Walther Trowal indicates that ever more customers are switching to aluminum media when shot blasting aluminum components. Because of its lower bulk density aluminum media is a lot gentler than, for example, stainless steel shot. Typical automotive forgings made from aluminum are, for example, steering knuckles or swivel bearings. Aluminum die-castings processed in THM shot blast machines can be all kinds of housings, covers or levers.

Because of its lower density the impact energy of aluminum media on the work pieces is considerably lower compared to other blast media. To offset this limitation Walther Trowal developed turbines with curved throwing blades, which generate a significantly higher blast media throwing speed than straight blades. This, combined with the fact that in THM machines the turbines are located very close to the work pieces, and the media throughput is considerably higher, results in optimized energy utilization and surprisingly short cycle times. However, the shot blast treatment remains very gentle. In short, despite the relatively low density of aluminum blast media, the shot blast process is highly effective and at the same time surprisingly gentle preventing any warping or distortions of delicate work pieces.

Another benefit of aluminum blast media is that it reduces the wear rate in the turbines and the machine to a fraction of the wear caused by steel shot, resulting in higher uptimes and lower operating costs.

Walther Trowal offers a range of different machine sizes equipped with up to four turbines. For example, for forged aluminum components the new THM 700/4/E with 4 turbines and a power of 15 kW for each turbine, produces an exceptionally high degree of productivity.

Specifically designed for handling aluminum media

To meet all the challenges posed by aluminum shot the Trowal engineers redesigned many machine assemblies, among them the media dosing system and the turbines. One detail of many: A rough surface of the throwing blades would quickly destroy the aluminum particles. Therefore, Walther Trowal is smoothing the blade surface with in-house vibratory finishing equipment. The result: A greatly reduced blast media consumption, lower dust emissions and significantly improved turbine uptimes.

Gentle work piece transport

THM troughed belt continuous shot blast machines are equally well suited for treating mass-produced bulk parts or large, delicate components. Especially with delicate, somewhat fragile work pieces the THM concept offers significant advantages: In these systems the work pieces are evenly distributed through the entire machine length. This results in a very gentle transport and prevents intensive part-on-part collisions. And the fact that the transport rods are covered with a relatively soft PU further cushions the already gentle tumbling action. This is particularly important for fragile components with thin walls, allowing them to be discharged from the machine without any nicking or other damage.

No problem with older THM systems!

When developing the new turbines Walther Trowal also took into consideration the many older machines still in operation: Any THM customer who wants to take advantage of the new turbines can easily install them in his existing machine(s). This allows the customers to increase the efficiency of their shot blast operation with minimal costs.
For THM systems still requiring steel or stainless steel blast media, Walther Trowal supplies the new turbines with the curved throwing blades made from tool steel also offering significantly higher turbine uptimes.

Facts about Walther Trowal

For 85 years Walther Trowal has been a pioneer and market leader in various surface treatment technologies. The company offers modular and custom engineered solutions for a wide range of surface treatment problems.

Initially only making vibratory finishing equipment, over the years Walther Trowal has continuously broadened its product range and today offers a wide portfolio of equipment and services for improving all kinds of surfaces, e.g. mass finishing, part cleaning, shot blasting and drying of a wide spectrum of work pieces, last but not least, the coating of mass produced small parts.

Walther Trowal offers not only various types of equipment but complete surface treatment systems: By linking the various equipment modules and automating the complete process, we are able to precisely adapt our process technologies to the technical requirements of our customers. This also includes various types of peripheral equipment and process water cleaning and recycling systems. Of course, we also offer comprehensive pre- and after-sale service like sample processing in one of our demonstration labs and global repair and maintenance service.

Walther Trowal serves many customers in many industries around the world. For example, in the automotive and aerospace industry, medical engineering and wind power generation.

Firmenkontakt
Walther Trowal GmbH & Co.KG
Georg Harnau
Rheinische Str. 35-37
42781 Haan/Germany
+49 2129.571-209
+49 2129.571-225
g.harnau@walther-trowal.de
http://www.walther-trowal.de

Pressekontakt
VIP Kommunikation
Regina Reinhardt
Dennewartstraße 25-27
52068 Aachen/Germany
+49.241.89468-24
+49.241.89468-44
reinhardt@vip-kommunikation.de
http://www.vip-kommunikation.de

Science Research Technology

Walther Trowal: A new era for high gloss polishing of ceramic surfaces

Vibratory finishing of ceramic components: Perfect surface finishes at surprisingly low costs

Walther Trowal: A new era for high gloss polishing of ceramic surfaces

The new polishing paste PKC is also suitable for finishing orthopedic implants.

The recently developed polishing paste trowapast PKC produces flawless mirror finishes on ceramic work pieces with surface roughness readings of ra = 0.002 – 0.005 µm. These are values, which to date could only be achieved with costly manual polishing. The new finishing process opens entirely new surface finishing possibilities in the fields of decorative ceramics and medical engineering.

Mechanical high gloss polishing on metallic work pieces has been around for many years. To date similar finishes on ceramic components were considered as impossible.

But, because they offer a substantially higher wear resistance compared to metal alloys, the significance of ceramic materials has been growing steadily. When it comes to designer, optical and consumer products, high luster finishes are a key element for their market acceptance. But smooth, shiny surfaces also have a functional dimension for components requiring low frictional resistance. Ceramics made from zirconium provide the required hardness, but smoothing and polishing them by mechanical means was so far an unsolved problem.

Generally, mass finishing is a cost effective method for polishing of a variety of work pieces. The process usually starts out with an aggressive grinding powder followed by a polishing paste that creates a high luster on the work pieces. These polishing pastes contain extremely fine abrasive particles. Unfortunately, on very hard surfaces their material removal rate is often insufficient. For instance, creating a surface reading of ra = 0.02 µm would take such a long time that it would be absolutely uneconomical.

Walther Trowal offers a range of polishing pastes or powders containing minerals with different hardness values and initial grain sizes allowing a wide spectrum of polishing applications on all kinds of materials.

The secret: Sharp edges are becoming rounded

A suitable paste product for the economical polishing of ceramic had yet to be developed. Since for several industrial sectors in recent years this challenge had become more urgent, in 2012, a cooperative of eight companies and research institutes, among them Walther Trowal, was organized with the goal to develop a process for high gloss polishing of ceramics. The project, named KeraOpt, was financially supported by the „NRW-EU-Ziel 2“ fund for industrial research.

Within the group Walther Trowal assumed the task of developing a mass finishing process that allows creating the desired high gloss polishes on ceramic work pieces in a cost effective manner.

Another project of KeraOpt was the development of ceramic inlays for injection molds that produce very fine geometrical structures combined with extremely smooth surfaces.

After comprehensive test trials Walther Trowal could identify a mineral that is suitable for these kinds of applications: Besides producing high gloss polishes on metallic components, it also produces the same type of finish on zirconium ceramics. With the new polishing paste trowapast PKC Walther Trowal has at last a product that can successfully be used for high gloss polishing of all kinds of ceramic components.

The new polishing paste contains a mineral with a relatively large grain size with an initially very high grinding effect. During the process the mineral grains wear down to smaller sizes transforming the process from intensive grinding to fine polishing.

Angelika Helten, managing the chemical lab at Walther Trowal, explains why the new paste is so effective for polishing ceramic components: „The secret is that the PKC paste is changing its technical characteristics during the course of the finishing process. While conventional mineral grains are breaking up into smaller grains with sharp edges, the new minerals are becoming rounded. Expressed simply, they do not create micro scratches on the surface but truly polish, thus producing very shiny surfaces. The result, with surface readings of ra = 0.002 to 0.005 µm, has even surprised us.“

For the ceramic mold inserts mentioned above the same approach was taken that had proven so successful for polishing metallic surfaces. Since the removal rate on ceramic is lower than that on metal, the process lasts longer and requires two different ingredients. With an initial surface roughness of ra = 0.3 µm the first stage with a grinding powder takes about 20 hours. This is followed by a second stage with trowapast PKC that lasts about 40 hours.

The result: A member company in the KeraOpt cooperative now produces the mold inlays for plastic injection molding no longer with tool steel but with ceramic. The surface readings could be reduced from ra = 0.011 to 0.002 µm.

A real success story

Another member of the cooperative is also utilizing the new polishing technology. This company produces decorative components used in the interior of vehicles, for example, gear shifters and control elements for car radios and air conditioners.

All these components, for which the final customer demanded high gloss polishes, consist of zirconium ceramics. To date these parts had to be manually polished. Now, with trowapast PKC they can be mechanically polished with a fully automatic process.

The ceramic components undergo a 72-hour grinding process followed by a 48 hour polishing step and 2 hours for the final brightening. This results in absolutely scratch-free work pieces, which after a subsequent cleaning process can be directly installed.

Christoph Cruse, the general sales manager at Walther Trowal, sees significant advantages for the customers: „The duration of the finishing process may appear very long. But it takes place without any supervision and requires a minimum of operator intervention. Since the new process allows the treatment of batches of 5,000 pieces, the costs per piece a re significantly lower than before.

New possibilities

First feedback from the customers indicates that the new polishing process represents a significant progress towards creating smooth, shiny surfaces on ceramic components. It opens a brand new field of new applications, for example for producing
-Thread guiding parts for textile machinery
-Ceramic coatings of metallic components
-Orthopedic implants
-Components for optical electronics
-Mirrors

Walther Trowal offers interested companies to test the new technology at the Trowal test lab in Haan. This ensures that the technical specifications of potential users are met, before they have to make a purchase decision.

Since 1931 Walther Trowal is developing and producing modular as well as custom engineered solutions for a wide range of surface finishing applications.

Initially only making vibratory finishing equipment, over the years Walther Trowal has continuously broadened its product range and today offers a wide portfolio of equipment and services for improving all kinds of surfaces, e.g. mass finishing, part cleaning, shot blasting and drying of a wide spectrum of work pieces, last but not least, the coating of mass produced small parts.

Walther Trowal offers not only various types of equipment but complete surface treatment systems: By linking the various equipment modules and automating the complete process, we are able to precisely adapt our process technologies to the technical requirements of our customers. This also includes various types of peripheral equipment and process water cleaning and recycling systems. Of course, we also offer comprehensive pre- and after-sale service like sample processing in one of our demonstration labs and global repair and maintenance service.

Walther Trowal supplies customers in various industries around the world. These include automotive and aerospace, medical engineering and wind power generation.

Firmenkontakt
Walther Trowal GmbH & Co.KG
Georg Harnau
Rheinische Str. 35-37
42781 Haan/Germany
+49 2129.571-209
+49 2129.571-225
g.harnau@walther-trowal.de
http://www.walther-trowal.de

Pressekontakt
VIP Kommunikation
Regina Reinhardt
Dennewartstraße 25-27
52068 Aachen/Germany
+49.241.89468-24
+49.241.89468-44
reinhardt@vip-kommunikation.de
http://www.vip-kommunikation.de

Computer IT Software

Trendsetter & Wachstumschance: IT-Miete

IT-Komplettpakete mieten statt kaufen – am Beispiel der Solutive AG

Trendsetter & Wachstumschance: IT-Miete

Erfolg bringt Wachstum, Wachstum bringt Erfolg: Da Unternehmen – gerade bei starkem Personalwachstum – immer auf die Kosten achten müssen, setzte die Solutive AG aus der Nähe von Hockenheim bei der Ausstattung der rasch auf 30 angewachsenen digitalen Arbeitsplätze zunächst auf moderne, aber günstige PC-Modelle unterschiedlicher Anbieter. Die unterschiedliche Hardware brachte allerdings schnell Probleme mit sich, die Solutive wertvolle Zeit und Ressourcen raubten. So musste jedes neue Endgerät für die Freischaltung der Garantielaufzeit mühevoll selbst registriert werden. Die interne Verwaltung und auch das Einrichten neuer Arbeitsplätze waren mit großem Aufwand verbunden. Bei Ausfällen musste aufgrund der unterschiedlichen Gerätehersteller, Kaufzeiträume und Garantielaufzeiten jeweils langwierig geprüft werden, ob noch Garantie bestand, wer für die Reparatur zuständig war und mit welchem Gerät der Mitarbeiter in der Zwischenzeit weiterarbeiten sollte. Denn eine Reparaturphase und zur Untätigkeit verdammte Mitarbeiter verursachen Produktivitätsminderungen. „Manche Arbeitsplätze hatten bis zu drei Docking-Stationen, weil wir Hardware verschiedener Hersteller bezogen hatten“, beschreibt Solutive-Vorstand Tobias Moosherr die ungute Ausgangslage. Kurz: Der stark durchmischte Gerätepool wurde zum echten Kopfschmerz- und Kostenfaktor.

Da man alle Kapazitäten und das Kreativpotenzial für den Ausbau des Kerngeschäftes und nicht für das leidige Herumschlagen mit IT-Mängeln einsetzen wollte, entschied sich Solutive, in Sachen Hardware einen Neustart-Knopf zu drücken – und zwar zusammen mit dem IT-Systemhaus Aluxo. Aluxo vereinheitlicht nun die Hardware-Basis, indem jeder alte oder ausfallende Arbeitsrechner sukzessive mit Surface Pro 4 oder dem Surface Book ersetzt wird. Doch nicht in Form gekaufter Hardware, sondern durch gemietete Geräte. „Workplace as a Service“ heißt dieses neue Angebot, beim dem der Distributor ALSO Deutschland GmbH die Miete von individuell konfigurierbaren Hard- und Softwarepaketen ermöglicht. Marcus Rieck, Geschäftsführer der Aluxo IT GmbH kommentiert zufrieden: „Durch die reibungslose Zusammenarbeit mit dem Distributor ALSO war es uns möglich, erste Geräte schon binnen 48 Stunden auszuliefern.“

Essentiell am Workplace as a Service-Paket ist, dass Versicherung und Garantie im Rahmen eines Schutzbriefes enthalten sind. Falls ein Gerät beschädigt werden sollte, gestohlen wird oder schlichtweg nicht mehr funktioniert, kümmert sich ALSO binnen 24 Stunden um den Austausch. Und durch die Speicherung der Daten in der Cloud sind die Firmendaten stets gesichert und der Austausch eines Geräts ändert nichts an deren Verfügbarkeit. Neuen Mitarbeitern kann umgehend ein moderner digitaler Arbeitsplatz bereitgestellt werden, eine E-Mail an Aluxo und eine Unterschrift unter den Mietvertrag reichen aus. Optional kann Aluxo den Arbeitsplatz auch bereits im Vorfeld installieren.

Auch finanziell rechnet es sich, die Geräte zu mieten, teilweise hat man einen Preisvorteil von bis zu 30% im Vergleich zum Kauf. Dazu kommt zu vergünstigten Konditionen das Office 365-Paket, das alle produktiven Werkzeuge für die tägliche Arbeit enthält. Die Geräte müssen auch nicht langjährig abgeschrieben werden und sind vollständig steuerlich als Betriebsausgabe absetzbar.

Die Beschäftigten sind begeistert, von nun an mit der neuesten Hard- und Software flexibel arbeiten zu können und auch die Kunden der Solutive AG sind von den leistungsstarken und schicken Geräten beeindruckt. „Durch die Nutzung von Workplace as a Service lösen sich alle Probleme in Wohlgefallen auf: eine Geräteklasse für alle Mitarbeiter, Vor-Ort-Austausch für jedes Gerät und ein toller Service von Aluxo“, zeigt sich Tobias Moosherr vollauf zufrieden. Ein innovatives und wendiges Unternehmen wie die Solutive AG passt eben einfach perfekt zum modernen und innovativen IT-Mietmodell!

Aluxo ist ein IT-Systemhaus mit Fokus auf Microsoft Cloud Services und Surface as a Service mit Sitz nahe Heidelberg. Aluxo verfolgt den Full-Service-Ansatz und bietet Lösungen auf Basis von Microsoft Azure. Das Systemhaus unterstützt Kunden auch bei der Implementierung von Microsoft Dynamics CRM. Mehr Informationen unter www.aluxo-it.de und unter www.surface-as-a-service.com

Die Solutive AG mit Sitz in Neulußheim ist seit vielen Jahren im internationalen SAP Software- und Servicegeschäft vertreten. Mit dem Ansatz des Enterprise Software Management und der zugehörigen Standardsoftware ermöglicht die Solutive AG eine schnelle und nachhaltige Digitalisierung des Release-, Change- und Transportmanagements im SAP Application Lifecycle. Mehr Details, auch zu Leistungen unter www.solutive.ag

Die ALSO Deutschland GmbH bringt Anbieter und Abnehmer der ITK-Industrie zusammen! Aus einer Hand bietet das Unternehmen Leistungen auf allen Stufen der ITK-Wertschöpfung. Im europäischen B2B-Marktplatz bündelt ALSO Logistics Services, Financial Services, Supply Services, Solution Services, Digital Services und IT Services zu individuellen Leistungspaketen. In seinem Portfolio hat ALSO mehr als 160000 Artikel von rund 350 Herstellern.

WaaS ist ein Angebot der ALSO Deutschland GmbH. ALSO verkauft nicht an Endabnehmer, sondern ausschließlich an qualifizierte Händler.

Firmenkontakt
ALSO Deutschland GmbH
Carolin Schultze
Lange Wende 43
59494 Soest
02921-992526
carolin.schultze@also.com
http://www.waas-reseller.com

Pressekontakt
PR13
Sabine Reinhart
Gartenstraße 13
82152 Krailling bei München
089-89559551
info@pr13.de
http://www.pr13.de

Auto Verkehr Logistik

Trend IT-Leasing

Flexibel, sicher, clever: Hard- und Software lieber mieten statt kaufen!

Trend IT-Leasing

Nicht nur das täglich genutzte Fortbewegungsmittel auf vier Rädern, sondern auch die IT sollte modern, schnell, sicher und komfortabel in der Bedienung sein – und ultramobil. Schließlich kann man heute nicht mehr nur ausschließlich vom Schreibtisch aus arbeiten. Die Daten sollen rundum geschützt vor Fremdzugriffen genau da verfügbar sein, wo man sie braucht, ob im Büro, zu Hause oder unterwegs.

Wenn bislang gerade kleine und mittelständische Unternehmer den Gesamtaufwand für die Anschaffung neuer Hardware und einer modernen Infrastrukturlösung fürchteten und Investitionen immer wieder aufschoben, bietet nun das neue Modell „Workplace as a Service“ (WaaS) schon kleineren Firmenkunden die Möglichkeit, die eigenen Arbeitsplätze mit individuell konfigurierbaren Paketen aus aktuellster Hard- und Software auszustatten. Durch den IT-Mietservice, den Microsoft aktuell über Partner und den Distributor ALSO anbietet, profitieren Unternehmen durch eine stets aktuelle IT, eine geringere Kapitalbindung sowie planbarere Kosten und weniger Unterhaltungsaufwand durch einen ausgelagerten Service.

„Mit WaaS brechen wir den Investitionsstau auf. Die Bereitschaft, auf das Mietmodell umzuswitchen ist sehr hoch“, erklärt Malte Wigger, Leiter der Workplace as a Service Business Unit bei der ALSO Deutschland GmbH und führt fort: „Die Kosten sind überschaubarer und vor allem planbar!“

Der WaaS-Service funktioniert sogar noch besser bzw. schneller als eine Vollkasko beim PKW – ein verlorenes, kaputtes oder gar gestohlenes Gerät wird binnen 24 Stunden ausgetauscht! Auch in Sachen Budget überzeugt WaaS: Die Leasinggebühr eines Gesamtpakets aus Microsoft Surface inkl. Programmen und IT-Infrastruktur beträgt gerade einmal 50,95 EUR pro Monat und Benutzer (Beispielkalkulation für Surface Pro 4 inkl. Type Cover, Surface Dock und Office 365 Business).

Wer weiß besser als Mobilitätsprofis, dass mieten statt kaufen eine gute Chance für die kontinuierliche Modernisierung eines Unternehmens bietet? Mehr Infos unter www.microsoft.de/workplace-as-a-service

Die ALSO Deutschland GmbH bringt Anbieter und Abnehmer der ITK-Industrie zusammen! Aus einer Hand bietet das Unternehmen Leistungen auf allen Stufen der ITK-Wertschöpfung. Im europäischen B2B-Marktplatz bündelt ALSO Logistics Services, Financial Services, Supply Services, Solution Services, Digital Services und IT Services zu individuellen Leistungspaketen. In seinem Portfolio hat ALSO mehr als 160000 Artikel von rund 350 Herstellern.

WaaS ist ein Angebot der ALSO Deutschland GmbH. ALSO verkauft nicht an Endabnehmer, sondern ausschließlich an qualifizierte Händler.

Firmenkontakt
ALSO Deutschland GmbH
Carolin Schultze
Lange Wende 43
59494 Soest
02921-992526
carolin.schultze@also.com
http://www.waas-reseller.com

Pressekontakt
PR13
Sabine Reinhart
Gartenstraße 13
82152 Krailling bei München
089-89559551
info@pr13.de
http://www.pr13.de