What should be paid attention to when welding stainless steel with commutator spot welding machine?

When using a commutator electric welder to weld stainless steel, most people ignore the problem of the electrode. If the electrode is not ground for a long time, the welding will become smaller and the current will be dispersed during use, so the welding effect is getting worse and worse. , The solder joint is the standard to measure the strength of the solder joint. Small solder joints will directly lead to insufficient strength of the solder joints. The main reason is the excessive fatigue of the solder joints and the large deviation of the welding parameters. The automatic winding machine manufacturer recommends , Spinning chooses spherical chromium zirconium copper or beryllium bronze electrodes. The stainless steel plate hardened by cold work has a strong surface hardness and a relatively large shrinkage rate. If the electrode pressure of the spot welder is not enough, when the liquid metal of the weld nugget solidifies from the outside to the inside, the shrinkage cavity cannot be effectively squeezed and formed Shrinkage cavity, if the electrode pressure of the spot welder is not enough, when the liquid metal of the weld nugget solidifies from the outside to the inside, the shrinkage cavity cannot be effectively squeezed to form a shrinkage cavity. You can increase the electrode pressure of the spot welder. Increase the maintenance time after welding to solve the problem. During spot welding, sparks are splashed, so the gap in the work room must be hit. Stainless steel spot welding workpieces are generally thin plates, so we must first ensure the size of the spot welding position. Ensure the close cooperation between the workpieces. When the welding rigidity is weak and the number of welding points is relatively large, we should arrange the spot welding sequence reasonably!