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Method for producing of V-Free microalloyed steel having equality quality of quenching and tempered alloy steel

机译：具有与调质合金钢同等质量的无钒微合金钢的生产方法

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摘要

PURPOSE: V-Free microalloyed steel with the same quality as high-strength alloy steel and a manufacturing method thereof are provided to secure a high yield ratio without additional alloying element V. CONSTITUTION: A manufacturing method of V-Free microalloyed steel with the same quality as high-strength alloy steel is as follows. A steel material is heated with 1200~1300C for minutely extracting carbide and nitride. The steel material is hot-rolled with 900~1000C. The steel material is composed of C 0.35~ 0.5 weight%, Si 0.30~0.60 weight%, Mn 1.30~1.70 weight%, S 0.020~0.050 weight%, Cr 0.20~0.40 weight%, Nb 0.020~0.050 weight%, N 80~180 ppm, and Fe and inevitable impurities.

机译：目的：提供一种具有与高强度合金钢相同质量的无钒微合金钢及其制造方法，以确保高的屈服比，而无需额外的合金元素V。构成：一种无钒微合金钢的制造方法作为高强度合金钢的质量如下。将钢材加热到1200〜1300C，以细微地提取碳化物和氮化物。钢材在900〜1000C的温度下热轧。钢材由C 0.35〜0.5重量％，Si 0.30〜0.60重量％，Mn 1.30〜1.70重量％，S 0.020〜0.050重量％，Cr 0.20〜0.40重量％，Nb 0.020〜0.050重量％，N 80组成〜180 ppm，以及铁和不可避免的杂质。

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公开/公告号KR101140911B1

专利类型
公开/公告日2012-05-03

原文格式PDF
申请/专利权人
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申请/专利号KR20090046041
发明设计人 박철우;이상원;
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申请日2009-05-26
分类号C21D8;C22C38;C22C38/12;
国家 KR
入库时间 2022-08-21 17:08:10

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