How many kinds of welding methods are there in auto spot welding machine?
The spark in the spot welding is normal. If the current is as small as possible, it is better to strengthen the contact pressure. After pressing, switch and move after closing. 1. Weld the bottom line. 2, the current is smaller, you can.
First of all, automobile welding generally adopts spot welding, projection welding, CO2 welding, copper brazing, stud welding, etc.. Spot welding is the most commonly used, and now generally hang type spot welder, integrated spot welder, power frequency, intermediate frequency, automatic welding robot (can be all kinds of welding), laser welding, etc.
Projection welding, CO2 welding, copper brazing, stud welding, etc.. Spot welding is the most commonly used, and now is generally hanging type spot welder.The double spot welding: spot welding current welding point principle, when the two electrode pressure workpiece makes two layers of metal forming some contact resistance in the two electrode pressure, welding current from the electrode through another electrode is formed on the two point contact resistance of hot melting moment, and welding current from the other two electrodes along the workpiece flow with the electrode to form a loop, and is the internal structure of welders. High temperature arc welder using positive and negative poles in the short moment to melt the solder welding and welding materials, to achieve the purpose of combining them, in order to ensure the nugget size and strength of welds, the welding time and welding current can complement each other in a certain range. In order to obtain a certain strength of solder joints, we can use large current and short time (strong conditions, also known as hard specifications), but also can use small current and long time (weak conditions, also known as soft specifications).
