首页> 外国专利> STEEL PLATE FOR LINEPIPE HAVING ULTRA-HIGH STRENGTH AND EXCELLENT LOW TEMPERATURE TOUGHNESS AND MANUFACTURING METHOD OF THE SAME

STEEL PLATE FOR LINEPIPE HAVING ULTRA-HIGH STRENGTH AND EXCELLENT LOW TEMPERATURE TOUGHNESS AND MANUFACTURING METHOD OF THE SAME

机译：具有超高强度和优异的低温韧性的管线用钢板及其制造方法

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摘要

A steel plate for linepipes having ultra-high strength and excellent low temperature toughness, and a method for manufacturing the same are disclosed. The steel plate has a strength of 930 MPa or more and excellent toughness even with much smaller amounts of alloying elements than that of conventional steel plates, and a method for manufacturing the same. The steel includes by weight %: 0.03˜0.10% C; 0˜0.6% Si; 1.6-2.1% Mn; 0˜1.0% Cu; 0-1.0% Ni; 0.02-0.06% Nb; 0-0.1% V; 0.1-0.5% Mo; 0-1.0% Cr; 0.005-0.03% Ti; 0.01-0.06% Al; 0.0005-0.0025% B; 0.001-0.006% N; 0-0.006% Ca; 0.02% or less P; 0.005% or less S; and the balance Fe and unavoidable impurities. The microstructure includes at least about 75 area percent of a mixture of bainitic ferrite and acicular ferrite.

机译：公开了具有超高强度和优异的低温韧性的用于管线管的钢板及其制造方法。钢板及其制造方法即使具有比传统钢板少得多的合金元素，也具有930MPa以上的强度和优异的韧性。所述钢包括按重量％：0.03〜0.10％C; Si：0〜0.6％; Mn 1.6-2.1％; 0〜1.0％Cu; 0-1.0％镍; 0.02-0.06％Nb; 0-0.1％V; 0.1-0.5％钼; 0-1.0％铬; 0.005-0.03％Ti; 0.01-0.06％的Al; 0.0005-0.0025％B; 0.001-0.006％N; 0-0.006％钙; P为0.02％以下; S为0.005％以下;其余为铁和不可避免的杂质。微观结构包括至少约75面积％的贝氏体铁素体和针状铁素体的混合物。

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公开/公告号US2010074794A1

专利类型
公开/公告日2010-03-25

原文格式PDF
申请/专利权人 SEONG SOO AHN;JANG YONG YOO;SANG HYUN CHO;
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申请/专利号US20070447666
发明设计人 JANG YONG YOO;SANG HYUN CHO;SEONG SOO AHN;
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申请日2007-11-02
分类号C22C38/42;B21B27/06;C22C38/44;C22C38/46;C22C38/48;C22C38/50;C22C38/54;C22C38/58;C21D8/02;
国家 US
入库时间 2022-08-21 18:54:02

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