1 , chromium stainless steel with a corrosion ( oxidizing acids , organic acids , cavitation ) , heat and wear resistance. Typically used in power plants , chemical industry,Oil and other equipment and materials . Chrome stainless steel welded poor, should pay attention to Welding , heat treatment conditions and the appropriate choice of welding . 2 , chrome 13 stainless steel after welding, hardening of large , prone to cracking. If you use the same type of chromium stainless steel electrode (G202, G207) welding,Must be above 300 ℃ preheating and post-weld about 700 ℃ slow-Cold treatment . If the weldment weld heat treatment is not possible , you should use chrome-nickel stainless steel electrode (A107, A207)3 , 17 chromium stainless steel , Nickel Alloy Welding Wire the corrosion resistance and weldability and appropriate amount to increase the stability of elements Ti, Nb, Mo , etc., welding resistance than chromium 13 doesStainless steel better. Using the same type of chromium stainless steel electrode (G302, G307) , should be above 200 ℃ preheating and post-weld tempering at about 800 ℃ . If you can not heat treated weldments , should be usedChrome-nickel stainless steel electrode (A107, A207).4 , chrome-nickel stainless steel electrodes with good corrosion resistance and oxidation resistance, widely used in chemical , fertilizer , petroleum, medical machinery.5 , chromium -nickel stainless steel welded when subjected to repeated heating carbide precipitation , reduce corrosion resistance and mechanical properties.6 , chromium -nickel stainless steel with titanium calcium type coating and lowLow Alloy Steel Electrodes type . Titanium calcium type can be used for AC and DC , but AC welding shallow penetration depth , and easy to redness,Therefore, as far as possible with DC power supply . Diameter of 4.0 and below can be used for allLocation weldments , 5.0 and above for a flat butt and fillet welding.7 , the electrode should be used to keep dry, titanium calcium type should be dried at 150 ℃ for 1 hour , low hydrogen type shall be approved by 200 ~ 250 ℃ dried for 1 hour ( no moreRepeated drying, easy to crack and peel off the skin or drugs ) to prevent the electrodeMedicated skin sticky oil and other dirt in order to avoid causing increasing carbon content and impact of the weld weldment quality .8 , in order to prevent corrosion of heat generated between the eyes , the welding current should not be too large, less than about 20% carbon electrode , arc not too long,Interlayer rapid cooling to narrow weld is appropriate.9 , dissimilar steel welding electrodes should be carefully selected to prevent the improper selection of welding or high temperature thermal cracking occurs due to σ phase precipitation heat treatment , the goldIs brittle. Refer to stainless steel and dissimilar steel welding rod selection criteriaFor selection, and take the appropriate welding process.