Why does the copper plate welding with S211 silicon bronze welding wire crack?
S211 silicon bronze welding wire, purple copper plate will crack, the material match is not right, and the expansion coefficient of silicon bronze and red copper difference is also quite big. The tensile strength is not a level, silicon bronze in 330N per square millimeter, and copper was 200 degrees, with high tensile strength is normal.
Copper welding should choose argon arc welding welding of copper, such as Wei Odin 204 copper used DC argon arc welding, argon arc welding, welding wire specifications 1.6,2.0,2.4,3.2 four specifications, welding current in 60-150A, gas flow rate of about 8, if the copper area is relatively large, need to use gas preheating treatment.
