1. When stainless steel plates need to be welded, the welding area should be carefully cleaned. At the same time, air pressure and gas are also very important, so it is necessary to ensure the quality and purity of argon gas, carefully check for leaks, and replace the gas cylinder in a timely manner when the air pressure drops.
2. During the welding process, attention should be paid to keeping the tungsten needle sharp to avoid making it dull due to unstable current. The arc during welding is unstable and not easy to maintain and diverge.
3. For stainless steel, especially thin plates, long-term high current continuous welding is not possible, and spot welding can be used.
4. The main reason for the blackening problem on the surface of stainless steel after welding is due to varying degrees of oxidation, which is related to the welding speed and cooling speed of the welding points. Therefore, by changing these relationships, the problem of blackening on the surface of stainless steel can be avoided.