After the process, the steel skin is scarcely recognizable. Wherever the heavy machine is ultimately deployed, the paint will withstand any conditions.
The procedure, which dispenses with energy- and time-intensive intermediate curing, has proved its mettle over time. In 2015 alone, the share of powder-on-powder surfaces at Wirtgen rose from 30 to 70 %. In manual application situations, powderon-powder coating is possible even in hard-toreach areas. The paint is applied using tribotechnology, in which the powder particles become electrostatically charged through friction.
The procedure has caught on. With the Pöttinger company from Grieskirchen, Austria, powder-on-powder expert Jochen Reihs handles an agricultural machinery manufacturer that uses this coating procedure in the Czech Republic. The ongoing development and adaptation of the technology to customer requirements at Pöttinger as well is demonstrated by the coating of a waste container in Slovakia. In this case, a metallic effect was added to the specially developed coating.
“We had to use a few technical tricks to manage that with powder- on-powder,” concedes Reihs. When he thinks of iron, rusty steel is just about the last thing that comes to mind.
Photos: Frederik Laux; Wirtgen GmbH