Welding spot welding is not firm, the beginning of welding is possible, to the welding after 50~60 pieces will appear shaky, partition time will be good, how to adjust?
This is the problem of the increase in spot welding temperature.A. In the two circuit of the spot welding machine, there is a bad connection.Two. The power of the spot welder is small, and the current and current time are too large for welding larger workpieces. Welding machine two circuit heating up to.Three. Welding power is ok. However, the welding parameter setting is not good. For example, the set current is small, and the time that the current can be soldered is set very large.
1 check the electrode and two circuit temperature and resistance.2 pressure stability
After welding the 50~60 parts of the resistance spot welder, the welding is not stable because of the following:1: welding capacity is too small. Continuous high current exceeds the rated capacity requirements of welding machine, welding machine overload leads to insufficient welding current, weld lead caused by unstable welding.2: welding machine rated output welding current is too low. According to the workpiece material, thickness, welding machine rated output current, machine capacity and other factors, choose the appropriate welding parameters, welding pressure and welding process.3: welding machine load rate is too low. It can reduce the working time of welding machine and increase the time of welding machine break. Of course, replacing high-power welders is the only solution to the problem.4: welding loop bad contact. Lead welding after a period of time, at the junction of heating workpiece. Check loop contacts and secure securely. Click or other contact points appear oxidation, timely cleaning, polished clean.
