1. Before welding, oil stains, rust and other dirt on the welding part should be removed to avoid welding pores. Argon with a purity of 99.99% should be used as the protective gas, and when the current is between 50-150A, the argon flow rate should reach 8-10 liters per minute, and when the current is between 150-250A, the argon flow rate It should reach 12-15 liters per minute.
2. The use range of welding nuts is generally to weld a thin plate of about 6mm, which can avoid large deformation of welding, and at the same time, it can have a more beautiful weld after welding. Direct current should be used when welding, and the negative electrode should be connected to one end of the welding wire.
