Cold welding of metal patches (the cold mold repair welding) is a metal cold welding repair equipment, through the mechanical parts, molds or fixtures such as the prevention protection or repair can be significant cost savings for businesses, to improve product quality and production efficiency, reduce costs played a significant role. The product is suitable for all types of machinery, castings, molds, parts, fixtures repair applications. The device in use does not produce any pollution. Is an economic and environmentally friendly equipment. 
 For low-carbon steel, carbon steel, tool steel, stainless steel, tool steel, cast iron, cast steel, cast aluminum, aluminum alloy, copper alloy, nickel alloy, carbon-tungsten alloy, as well as all the conductors can be conductive. 
 Widely used in automobiles, home appliances, plastic electronics, foundry industry, mold manufacturing, hydraulic power, aerospace, railway locomotive, machining, equipment maintenance and other industries. 
 Patches produced by triple cold welding of metal (the cold mold repair welding) in use does not produce thermal deformation, no cracks, no hardening, repair at room temperature does not affect the machining performance, the turning, milling, planing , grinding, polishing and electroplating, and other post-processing.