stainless steel welding rod

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. var addthis_config = {"data_track_addressbar":true};

Stainless steel electrode can be divided into chromium and chromium -nickel stainless steel welding electrodes, welding of these two who meet the national standard , according to GB GB/T983-1995 provides Copper Electrode assessment.Chromium- chromium (oxidizing acids , organic acids , cavitation ) heat and corrosion resistance . UsuallySelected as power plants, chemical , oil and other equipment and materials . But chromium stainless steel Generally poor weldability , should pay attention to the welding process, heat treatment conditions and the appropriate choice of welding . var addthis_config = {"data_track_addressbar":true};

What type stainless There are basic coated stainless steel electrode and Aluminum Flux Core Welding Wire acidic drug skin two categories. Basic coated stainless steel electrode with a type of stomatal sensitivity to small , stable alloy composition Fixed and excellent mechanical properties and welding performance characteristics ; acidic Drug skin type stainless steel electrode with drug-resistant skin redness and excellent mechanical properties and welding performance. ( 1 ) stainless steel electrode model based GB/T983-1995 " stainless steel electrode " requirement , stainless steel electrodes deposited metal model based on the chemicalChemical composition , drug skin type , welding position and the welding current category from Points. Its model preparation method is: the first letter "E" indicates electrode , "E" behind the numbers indicate the chemical composition of deposited metal classification code , such asThere are special requirements for chemical composition, the chemical composition of elemental symbol table Shown , on the back of digital ; dash " - " followed by two numbers indicate the drug skin type , welding position and the welding current category. var addthis_config = {"data_track_addressbar":true};

Stainless steel electrode for chromium content greater than 10.50% , nickel content of less than 50% of the corrosion-resistant steel or heat resistant steels , stainless steel should be used according toMaterial, working conditions ( including temperature and contact with the medium ) To choose. Mainly from the following aspects:① In the high temperature environment -resistant stainless steel , selected to meet the welding mainly thermal cracking of weld metal and thewelded joints of high performancePerformance. For the Cr / Ni ≥ 1 austenitic heat-resistant steel, such as1Cr18Ni9Ti, Cr17Ni13W , is normally used austenitic - ferritic stainless steel electrode ; if the Cr / Ni