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1. 发明专利

DE69832313T2 未知
公开(公告)号：DE69832313T2
公开(公告)日：2006-08-24
申请号：DE69832313
申请日：1998-03-18
申请人： JFE STEEL CORP
发明人： ODA YOSHIHIKO , YAMAGAMI NOBUO , HIURA AKIRA , TANAKA YASUSHI , TAKAHASHI NORITAKA , MATSUOKA HIDEKI , CHINO ATSUSHI , YAMADA KATSUMI , IIZUKA SHUNJI
IPC分类号： C22C38/02 , C21D8/12

2. 发明专利

DE69832313D1 未知
公开(公告)号：DE69832313D1
公开(公告)日：2005-12-22
申请号：DE69832313
申请日：1998-03-18
申请人： JFE STEEL CORP
发明人： ODA YOSHIHIKO , YAMAGAMI NOBUO , HIURA AKIRA , TANAKA YASUSHI , TAKAHASHI NORITAKA , MATSUOKA HIDEKI , CHINO ATSUSHI , YAMADA KATSUMI , IIZUKA SHUNJI
IPC分类号： C21D8/12 , C22C38/02

3. 发明专利

JP2011174151A Cold-rolled steel sheet for high-tension pipe excellent in surface quality and method for manufacturing the same 审中-公开
标题翻译：用于表面质量优异的高张力管的冷轧钢板及其制造方法
公开(公告)号：JP2011174151A
公开(公告)日：2011-09-08
申请号：JP2010040097
申请日：2010-02-25
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： MITSUZUKA KENICHI , YAMAGAMI NOBUO
IPC分类号： C22C38/00 , B21B3/00 , C21D9/46 , C22C38/06
摘要： PROBLEM TO BE SOLVED: To provide a cold-rolled steel sheet for high-tension pipe excellent in surface quality, and a method for manufacturing the same.
SOLUTION: The cold-rolled steel sheet has a composition comprising, by mass, 0.050-0.070% C, 0.8-1.5% Si, 1.8-2.5% Mn, ≤0.020% P, ≤0.010% S, 0.010-0.100% Sol.Al, ≤0.005% N and the balance being Fe and unavoidable impurities. The structure thereof is a two-phase structure comprising a ferrite phase and a martensite phase. The cold-rolled steel sheet is obtained by: starting rapid cooling of a slab within 1 sec after hot-rolling so as to achieve a temperature drop of >100°C but 10°C/s; winding the same at a winding temperature of 500-600°C; subjecting the same to cold-rolling; and continuously annealing the same in a furnace atmosphere with a hydrogen concentration of ≥3 vol.% and a dew point of ≤-30°C.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种表面质量优异的高张力管的冷轧钢板及其制造方法。解决方案：冷轧钢板具有质量分数为0.050-0.070％C，0.8-1.5％Si，1.8-2.5％Mn，≤0.020％P，≤0.010％S，0.010-0.100 ％Sol.Al，≤0.005％N，余量为Fe和不可避免的杂质。其结构是包含铁素体相和马氏体相的两相结构。冷轧钢板是通过以下方式获得的：在热轧后1秒内开始快速冷却板坯，以便在> 10℃的平均冷却速度下实现> 100℃但<300℃的温度下降 /秒; 在500-600℃的卷绕温度下卷绕; 对其进行冷轧; 并在氢浓度≥3体积％，露点≤-30℃的炉气氛中连续退火。版权所有（C）2011，JPO＆INPIT

4. 发明专利

JP2013181212A Hot rolled steel sheet, manufacturing method thereof and manufacturing method of cold rolled steel sheet 有权
标题翻译：热轧钢板及其制造方法及冷轧钢板的制造方法
公开(公告)号：JP2013181212A
公开(公告)日：2013-09-12
申请号：JP2012045846
申请日：2012-03-01
申请人： Jfe Steel Corp , Jfeスチール株式会社
发明人： TAKAHASHI NORITAKA , KOBAYASHI TAKASHI , YAMAGAMI NOBUO , TAWARA KENJI
IPC分类号： C22C38/00 , B21D28/00 , B21D53/88 , C21D9/46 , C22C38/06
摘要： PROBLEM TO BE SOLVED: To provide a hot rolled steel sheet which is superior in shape stability of a final product even when spheroidizing annealing after hot rolling is skipped, and from which a cold rolled steel sheet satisfying hardness requirement can be obtained, and to provide a method for manufacturing it.SOLUTION: A hot rolled steel sheet includes, by mass, 0.13-0.20% of C, 0.25% or less of Si, 0.3-1.0% of Mn, 0.030% or less of P, 0.02% or less of S, 0.08% or less of Al and 0.008% or less of N, and the remainder being Fe and inevitable impurities, and has a micro structure which contains, in area rate, 15% or less of bainite, and 30% or less of pearlite + cementite, and the remainder being ferrite as a main phase. The hot rolled steel sheet can be obtained by hot rolling under a finish rolling end temperature of Artransformation point or higher, and a coiling temperature of 580-680°C.
摘要翻译：要解决的问题：即使跳过热轧后的球化退火，即使是能够得到满足硬度要求的冷轧钢板，也能够提供最终成品的形状稳定性优异的热轧钢板，一种热轧钢板的制造方法，其中，C：0.13〜0.20％，Si：0.25％以下，Mn：0.3〜1.0％，P：0.030％以下，0.02％以下的S，0.08％以下的Al和0.008％以下的N，余量为Fe和不可避免的杂质，并且具有以贝氏体的面积率为15％以下且30％以下的微观结构的珠光体+渗碳体，其余为铁素体作为主相。热轧钢板可以通过在Artransformation point以上的终轧温度下进行热轧，并且卷取温度为580-680℃。

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