How to prevent argon arc welding seam from rusting.

During argon arc welding, carbides in stainless steel precipitate, which leads to the decrease of corrosion resistance.

2. The high temperature caused by grinding leads to the deterioration of stainless steel characteristics.

Suggested improvement scheme based on current process:

1. Keep the material clean (clean the material before welding), and prevent the invasion of foreign impurities such as carbon, oxygen and nitrogen during welding (check the purity of argon gas and keep sufficient argon gas protection);

2. Avoid excessive polishing and consider cooling and heat dissipation measures.

First, the stainless steel welded joint is polished smooth, and then waxed with a waxing machine. Remember, it must be smooth enough so that it won't sting to the touch, so it shouldn't rust.