Walther Trowal: New modular controls enhance the process safety of mass finishing applications

At the MACH exhibition Walther Trowal presents a mass finishing system for finishing of castings equipped with a brand-new control panel. This allows fully automatic finishing operations in the rotary vibrators of the model range CB, especially with interlinked systems. It helps not only to minimize manual process control but also increases the overall process safety.

For the suppliers of mass finishing equipment so-called “cup-shaped” castings can pose major challenges: Upon completion of the finishing cycle such work pieces, for example battery housings, can contain a certain amount of processing media, which might be carried out of the machine with the work pieces. This can pose serious problems with downstream manufacturing operations.

That is one of the reasons, why Walther Trowal developed the „SZ-Plus“ control panel for the CB model range. It covers the entire surface finishing process including automation stages like work piece loading, the finishing step itself, discharging of the finished parts from the machine, work piece drying and work piece transport before and after the finishing step.

One major feature of the new control system is that, compared to the actual finishing step a higher vibratory amplitude can be programmed for the screening step, i.e. the separation of the finished work pieces from the media. This greatly facilitates the removal of media, which might have been carried out of the finishing machine by cup-shaped work pieces.

The CB rotary vibrators allow the processing of castings with dimensions of up to 380 mm (15”). Of course, they can also be used for finishing other high value work pieces that are processed in multi-stage processes with grinding and polishing pastes. This includes so-called “Trowapast” processes, which are employed for stainless steel work pieces and even components made from ceramic.

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.

Walther Trowal at the MACH 2018 exhibition
April 9 – 13, 2018 | at the NEC Birmingham
Booth 6-66