Precision welding machine, why welding in the touch when the stainless steel surface will be a little black? This affects process requirements very much.
Generally speaking, black is the power is not enough, welding time is too long, resulting in, if the debugging well, welding stainless steel can do the surface does not change color, traceless effect. If you have any questions, please call us.
1.0mm+1.0mm below the stainless steel spot welding can be unchanged color, beyond this thickness will be difficult to adjust. Is the spot welding you use for AC or energy storage? If the AC welding time not more than 2 cycles, the storage time is dead do not adjust, there is pressure, welding of 1.0+1.0 stainless steel pressure not less than 5000N, with 80 or 100 of the diameter of the cylinder will be better, if your existing machine is not out of tune is considered for replacement.
As long as the welding time of tddhj is shortened, the surface of stainless steel will be very good.