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SURFACE DETECT IMPROVING METHOD OF STEEL PLATE FOR CONCENTRATED NITRIC ACID
SURFACE DETECT IMPROVING METHOD OF STEEL PLATE FOR CONCENTRATED NITRIC ACID
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机译：浓硝酸钢板表面检测改进方法
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摘要
PURPOSE:To prevent the formation of clusters and improve ground flaw detects by adding a specific ratio of Ti prior to addition of Nb, Ta and Zr at the time of making a cast ingot made of a stainless steel and a high silicon-nickel-chromium steel consisting of specific compositions. CONSTITUTION:At the time of making a cast ingot of the stainless steel consisting of =0.1% C by weight, 2.5-5.0% Si, =2% Mn, 15-20% Cr, 10-22% Ni, CX 10-2.5% one kinds of Nb, Ta, Zr, and the tensidual Fe and the high silicon- nickel-chromium steel consisting of =0.03% C, over 5% and =7% Si, =10% Mn, 7-16% Cr, 10-19% or under Ni, and the balance Fe with unavoidable impurities, =0.05-0.2wt% Ti is added prior to addition of Nb, Ta, Zr. Thereby, the formation of harmful oxide and nitride clusters of Nb, Ta, Zr of large specific gravities are prevented.
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