Tag Archives: mass-produced

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: 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