What should we do when welding stainless steel tees?

　　1. In order to guard against the interocular corrosion caused by heating, the welding current should not be too large, less than 20% of the carbon steel electrode, arc should not be too long, fast cooling between layers, narrow bead is appropriate.

　　2.Stainless steel tee after welding hardening is greater, convenient to crack. If the typical stainless steel tees are to be welded, preheating above 300 C and cooling treatment at 700 C after welding are necessary. If the weldment cannot be heat treated after welding, stainless steel tees electrode should be selected.

　　3. The weldability of stainless steel tee is better than that of stainless steel tees. When accepting the same typical chromium stainless steel electrode, it should be preheated above 200 C and tempered at 800 C after welding. If the weldments are not heat treated, chrome nickel stainless steel electrodes shall be used.

　　4. The stainless steel tees welding rod has exquisite corrosion resistance and oxidation resistance, and is widely used in chemical industry, fertilizer, petroleum, medical machinery manufacturing.

　　5. The stainless steel tees have titanium calcium type and low hydrogen type.

　　6. Stainless steel tees have certain corrosion resistance (oxidation acid, organic acid, cavitation), heat resistance and wear resistance. All are used for power plant, chemical industry, petroleum, etc. The weldability of stainless steel tees is poor. Attention should be paid to welding technology and proper welding electrodes before heat treatment.

　　7.  As not to increase the carbon content of the welding seam and affect the welding quality.

　　8. When stainless steel tees are welded, carbides are precipitated by repeated heating, which reduces corrosion resistance and mechanical properties.