When large diameter flange of the steel alloy 76 less, and are too many wire materials containing alloying elements, alloying elements to improve the weld function in these influence under the condition of a sticking point, add the function of fusion than will cause weld is reduced.
Stainless steel flange weld metal melting of cross-sectional area of F the cross-sectional area of the filler metal mode to FH, weld the cross-sectional area of F – 4 FH, (F, 4 fj is weld seam of fusion than 7. Fusion than 7 basis will affect the chemical composition of weld, stainless steel flange organization and mechanical function.
Fusion than can be all stainless steel flange metal in the weld of the proportion of intrusive, so when the chemical composition of welding wire and steel metal are large difference, stainless steel flange weld level affected by the composition of steel chemical composition is directly related to the fusion ratio. The greater the fusion ratio. Parent metal components, the greater the influence of weld.
For example when non-standard flange metal than wire contains more impurities (such as carbon content, etc.), the fusion ratio, the greater the non-standard flange metal impurity elements in the weld with the number is, the more lower the plasticity and toughness of weld metal, increase the thermal crack deflection.
When large diameter flange steel metal containing alloying elements is large, and the less wire containing alloying elements, if these alloying elements to improve weld mechanical function, add the fusion than can progress on joint mechanics function. When large diameter flange of the steel alloy 76 less, and are too many wire materials containing alloying elements, alloying elements to improve the weld function in these influence under the condition of a sticking point, add the function of fusion than will cause weld is reduced. Therefore, should be based on the detailed status and request for fusion than into the appropriate grasp.
Zhejiang Yaang Pipe Industry Co., Limited is a leading manufacturer and supplier of nickel alloy and stainless steel products, including Super Duplex Stainless Steel Flanges, Stainless Steel Flanges, Stainless Steel Pipe Fittings, Stainless Steel Pipe. Yaang Pipe Industry has been keeping “honesty, cooperation and win-win” operating principles, to “began with the market demand, and finally customer satisfaction” for operating purposes, won the broad market.
Source: Zhejiang Yaang Pipe Industry Co., Limited (www.yaang.com)