Stainless steel electrode Precautions include:

1, the corrosion resistance of chromium stainless steel with a certain (oxidizing acids, organic acids, cavitation), heat and wear resistance. Typically used for power plants, chemical, oil and other equipment and materials. Chromium stainless steel welding is poor, should pay attention to welding, heat treatment conditions and the selection of suitable welding.

2, Cr 13 stainless steel weld hardening of large, easy to crack. If using the same type of chromium stainless steel Welding Electrode Manufacturer (G202, G207) welding must be carried out more than 300 ℃ 700 ℃ preheat and post weld around the slow cooling process. If the weldment can be postweld heat treated, chrome-nickel stainless steel welding rod should be used (A107, A207).

3, 17 chromium stainless steel to improve corrosion resistance and weldability increased amount of stability and appropriate elements Ti, Nb, Mo, etc., welding of stainless steel better than the chrome 13. Using the same type of chromium stainless steel electrodes (G302, G307), should be above 200 ℃ preheating and post-weld tempering around 800 ℃. If the weldment can not be heat treated, chrome-nickel stainless steel welding rod should be used (A107, A207).

4, chrome-nickel stainless steel electrodes with good corrosion resistance and oxidation resistance, widely used in chemical, fertilizer, petroleum, medical equipment manufacturing.

5, chrome-nickel stainless steel welding, carbide precipitation by repeated heating to reduce corrosion resistance and mechanical properties.

6, chrome-nickel stainless steel with titanium calcium type of drug skin and low hydrogen type. Titanium calcium type can be used for AC-DC, AC welding penetration but shallow, and easy to redness, so as far as possible the DC power supply. Diameter of 4.0 and below can be used for all position welding parts, 5.0 and above for flat welding and fillet welding.

7, the electrode should be used to keep dry, titanium calcium type shall be 150 ℃ drying 1 hour, low-hydrogen type should be dried by 200-250 ℃ for 1 hour (can not be repeated drying, easy to crack or peel off the skin drugs), to prevent the Brazing Alloys viscous oil and other drug skin dirt, so as not to increase the carbon content and the resulting impact of the weld weldment quality.

8, in order to prevent corrosion of heat generated between the eyes, the welding current is not too large, less than about 20% carbon steel electrode, the arc should not be too long, the layer between the fast-cooling, in order to narrow weld is appropriate.