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Duplex Stainless Steel plant of urea Production, urea Production Plant and Welding material manufactured with duplex Stainless Steel.
Duplex Stainless Steel plant of urea Production, urea Production Plant and Welding material manufactured with duplex Stainless Steel.
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机译:尿素生产双相不锈钢厂,尿素生产厂和用双相不锈钢生产的焊接材料。
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摘要
Describe the stainless steel used in urea plant, its weight percentage is C: 0.03% or less, under the condition of 0.5%.Mn: 2% or less, p.0.04% or less, s.003% or less, Cr: 26% or more, but less than 28%.It's not six percentMo: 0.2-1.7%,W: More than 2%But not more than 3%N: More than 0.3%But not more than 0.4%the rest being Fe and impurities, in which the content of Cu as impurity is not greater than 0.3%. Duplex stainless steel may also contain Ca, Ce, and B, with the content levels of Al and O as impurity not being greater than 0.05% and 0.01%, respectively. Furthermore, it is preferable that the increase in the Vickers hardness of the steel is not greater than 80, before and after the steel treated with solution annealing is subjected to a heat treatment of 800 ° C for 30 minutes and subsequent cooling in water. This duplex stainless steel has high resistance to corrosion.
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