Brazing divided into three categories: (1) argon copper wire welding (2) copper alloy electrode welding (3) copper wire (1) the argon arc copper wire welding: Type: MIG welding wire welding of thin copper sheet Scope: copper and copper TIG pick, argon welding of copper and cast iron, copper and steel argon welding, surface coating Application Description: the tin-containing copper welding attachment material having a good fluidity and easy to re-apply to OFC and high deformation rate machining copper welding, welds without porosity, it is recommended for a large area of ​​the TIG welding is required pre heat. (2) copper alloy electrode welding: 1. Choices and parent material close to the electric strip before welding requirements of maternal heating (heating with oxygen) 3 DC welding machine welding performance better. The correct choice of welding current. Electrode. T107 copper electrode, better corrosion resistance of the atmosphere and seawater, the main welding conductive copper, conduit and copper structural components. T207 silicon bronze welding rod. Inorganic acids (except nitric acid), organic acids and corrosion resistance, suitable for copper, silicon bronze and brass welding. T227 phosphor bronze welding rod, a certain strength, ductility, toughness, wear resistance and corrosion resistance, suitable for welding of copper, brass, phosphor bronze. T237 aluminum manganese bronze welding rod, abrasion resistance, excellent corrosion resistance, widely used in copper alloys, aluminum bronze, copper, cast iron welding. (3) Copper wire: the available oxygen welding.