4 mm copper plate surface welding 2 mm purple square tube, large argon arc welding machine
Welding process of copper and copper alloyCopper has excellent properties of conductivity, heat conductivity, corrosion resistance, ductility and strength. It has been widely used in the electrical, electronic, chemical, food, power, transportation and aerospace industries. In pure copper
(copper) in addition to more than 10 kinds of alloy elements, the formation of various types of copper alloy, such as zinc brass and nickel; copper nickel alloy; and silicon bronze and aluminum aluminum bronze and so on.Copper and copper alloys can be connected by brazing and resistance welding. In today's advanced industry, welding has occupied the leading position. It is easy to realize copper and copper alloy by welding electrode, arc welding, TIG welding and MIG welding
There are four main difficulties in the weldability of copper and copper alloys. One is the influence of high thermal conductivity. The thermal conductivity of copper is 7-11 times larger than that of carbon steel, when the process parameters are similar to those of carbon steels of the same thicknessCopper is difficult to fuse and filler metal and base metal do not fuse well. Two is the hot tearing tendency of welding joint. When welding, copper in the bath and its impurities form eutectic eutectic at low melting point, which makes copper and copper alloy obviousThe thermal embrittlement produces a thermal crack. The three is that porosity defects are much more severe than carbon steels, and if hydrogen bubbles are present. Four is the change of welding joint property. Grain coarsening, plasticity decrease, corrosion resistance decrease and so on.
