Walter Surface Technologies Inc. launched the Surfox 205 and Surfox Mini TIG and spot weld cleaning systems. The Surfox 205 uses an electrochemical process to clean and passivate spot and TIG welds on stainless steel, aluminum and titanium. The machine replaces manual operations, such as mechanical abrasion or hazardous solutions like pickling paste. The Surfox Mini allows operators to clean spot and TIG welds on aluminum and stainless steel to a good finish, even on delicate surfaces. The systems are good for everyday field work, including equipment repair and touchup.