What is 312 welding rod used for?
1.Stainless steel welding rods can be divided into chromium stainless steel welding rod and chromium nickel stainless steel welding rod, the two kinds of welding rod in accordance with the AWS standard
2.Chromium stainless steel welding rod has certain corrosion resistance (oxidizing acid, organic acid, cavitation) heat resistance and corrosion resistance. It is usually selected for power station, chemical industry, petroleum and other equipment materials. But chromium stainless steel is generally poor weld ability, should pay attention to the welding process, heat treatment conditions and the selection of appropriate electrode.
3.Chrome-nickel stainless steel welding rod has good corrosion resistance and oxidation resistance, widely used in chemical industry, fertilizer, petroleum. In order to prevent intergranular corrosion due to heating, the welding current should not be too large, about 20% less than the carbon steel electrode, the arc should not be too long, fast cooling between layers, narrow pass is appropriate.
4.AWS E312 welding rod is a dual phase stainless steel welding rod of rutile coating type. The welding process has excellent performance and can be used for both AC and DC. Because the weld contains about 40% ferrite, it has excellent crack resistance. Application: used for welding high carbon steel, tool steel and dissimilar metals.
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