Gas ratio for welding stainless steel

1、 Introduction to Stainless Steel Welding Technology

Stainless steel is a material with high strength and corrosion resistance, which is widely used in industrial manufacturing. Therefore, stainless steel welding technology has also become an important technology. The two commonly used techniques in stainless steel welding are TIG and MIG. TIG welding technology, also known as argon arc welding, requires the use of inert gas as the shielding gas; And MIG welding technology, also known as gas shielded welding, requires the use of a special gas mixture.

2、 Gas ratio for stainless steel welding

In stainless steel MIG welding, the gas mixture used is usually composed of argon and helium, with a ratio of 98% argon and 2% helium. The function of this gas mixture is to protect the welding area from oxygen intrusion and oxidation. If oxygen enters the welding area, it will produce brown rust spots, which will affect the welding quality.

3、 Precautions

When welding stainless steel, it is important to protect the welding area and prevent oxygen from entering. At the same time, attention should also be paid to using the correct welding techniques, selecting appropriate electrodes and welding wires, and adjusting parameters such as current, voltage, and speed. Only in this way can the welding quality be guaranteed.

【 Conclusion 】

The gas ratio used for welding stainless steel is usually 98% argon and 2% helium. The function of this gas mixture is to protect the welding area from oxygen intrusion and oxidation. When welding stainless steel, attention should be paid to protecting the welding area, selecting appropriate welding techniques and parameters to ensure welding quality.