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HIGH TENSILE STRENGTH STEEL CONTAINING NIOBIUM EXCELLENT IN TOUGHNESS OF WELDING HEATTAFFECTED ZONE

机译：焊接热影响区韧性下含铌优良的高抗拉强度钢

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摘要

PURPOSE:Nb-containing non thermal refining high tensile steel, excellent in toughness of large heat input welding heat-affected zone, obtained by adding a specific quantity of Nb or moreover, Ni, Mo, Ti, V etc. to low carbon steel. CONSTITUTION:Nb;0.01-0.15% is contained in low carbon steel containing C 0.10%, Mn;0.6-1.8%, Si0.1%. At this time, ratio of Nb/Mn is made within the limits of 0.25-0.15. Or, one or more than two kinds of Ni;0.3-1.0%, Mo;0.15- 0.8% are added moreover. Or, in stead of Ni, Mo, one or two kinds of Ti;0.01- 0.03%, V;0.01-0.2%, are contained and ratio of (Nb+V)/Mn is made at 0.025- 0.15. Or, one or two kinds of Ni, Mo, Ti, V, are contained other than Nb within the above mentioned limits and ratio of (Nb+V)/Mn is made at 0.025-0.15, also. 60-80kg/mm2 of strength is maintained even when carrying out more than 30KJ/cm large heat input welding.

机译：用途：通过向低碳钢中添加一定量的铌或更多的镍，钼，钛，钒等获得的含铌非热精炼高强度钢，在大的热输入焊接热影响区中具有优异的韧性。组成：Nb; 0.01-0.15％的低碳钢含量为C <0.10％，Mn; 0.6-1.8％，Si <0.1％。此时，使Nb / Mn之比在0.25〜0.15的范围内。或者，还添加Ni; 0.3〜1.0％，Mo; 0.15〜0.8％中的一种以上。或者，代替Ni，Mo，含有Ti; 0.01〜0.03％，V; 0.01〜0.2％中的一种或两种，（Nb + V）/ Mn的比为0.025〜0.15。或者，在上述范围内，除Nb以外，还含有Ni，Mo，Ti，V中的一种或两种，并且（Nb + V）/ Mn的比也设为0.025〜0.15。即使进行大于30KJ / cm的大热输入焊接，也可以保持60-80kg / mm 2的强度。

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公开/公告号JPS5518534A

专利类型
公开/公告日1980-02-08

原文格式PDF
申请/专利权人 KOBE STEEL LTD;
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申请/专利号JP19780089543
发明设计人 KASAMATSU YUTAKA;KOBAYASHI HIROSHI;
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申请日1978-07-21
分类号C22C38/00;C22C38/12;C22C38/14;
国家 JP
入库时间 2022-08-22 18:55:29

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