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1. 发明公开

KR1020140081080A 내수소유기균열성 및 저온충격인성이 우수한 열연강판 및 그 제조방법 有权
标题翻译：具有优异氢诱导抗裂纹和低温冲击韧性的热轧钢板及其制造方法
公开(公告)号：KR1020140081080A
公开(公告)日：2014-07-01
申请号：KR1020120150411
申请日：2012-12-21
申请人： 주식회사 포스코
发明人： 김완근 , 김덕규 , 심재숙 , 박용근
IPC分类号： C22C38/00 , C21D8/02 , C21D9/46
CPC分类号： C22C38/02 , C21D8/0226 , C21D8/0263 , C21D2211/005 , C22C38/001 , C22C38/002 , C22C38/04 , C22C38/06 , C22C38/26 , C22C38/28
摘要： The present invention provides a hot rolled steel sheet having excellent sulfide stress cracking resistance and low temperature toughness in an H2S atmosphere and a method for manufacturing the hot rolled steel sheet by optimizing a composition and manufacturing conditions. The hot rolled steel sheet according to an embodiment of the present invention contains 0.02-0.05 wt% of C, 0.05-0.3 wt% of Si, 0.5-1.2 wt% of Mn, 0.02-0.05 wt% of Al, 0.02-0.06 wt% of Nb, 0.005-0.02 wt% of Ti, 0.01-0.3 wt% of Cr, 0.0015-0.003 wt% of Ca, 0.003-0.007 wt% of N, 0.01 wt% or less of P (excluding 0%), 0.001 wt% or less of S (excluding 0%), and the remainder consisting of Fe and inevitable impurities.
摘要翻译：本发明提供了一种在H 2 S气氛中具有优异的耐硫化物应力开裂性和低温韧性的热轧钢板，以及通过优化组成和制造条件来制造热轧钢板的方法。根据本发明的实施方式的热轧钢板含有0.02-0.05重量％的C，0.05-0.3重量％的Si，0.5-1.2重量％的Mn，0.02-0.05重量％的Al，0.02-0.06重量％的Nb，0.005-0.02重量％的Ti，0.01-0.3重量％的Cr，0.0015-0.003重量％的Ca，0.003-0.007重量％的N，0.01重量％以下的P（不包括0％），0.001 重量％以下的S（不含0％），余量由Fe和不可避免的杂质构成。

2. 发明授权

KR101461730B1 내수소유기균열성 및 저온충격인성이 우수한 열연강판 및 그 제조방법 有权
标题翻译：具有优异氢诱导抗裂纹和低温冲击韧性的热轧钢板及其制造方法
公开(公告)号：KR101461730B1
公开(公告)日：2014-11-14
申请号：KR1020120150411
申请日：2012-12-21
申请人： 주식회사 포스코
发明人： 김완근 , 김덕규 , 심재숙 , 박용근
IPC分类号： C22C38/00 , C21D8/02 , C21D9/46
摘要： 본 발명의 일측면은 성분 및 제조조건을 최적화하여 H
2 S 분위기에서 황화물 응력균열 저항성 및 저온인성이 우수한 열연강판 및 그 제조방법을 제공하고자 한다.

3. 发明授权

KR101490561B1 내수소유기균열성 및 항복비가 우수한 박물 열연강판 및 그 제조방법 有权
标题翻译：具有优异氢诱导抗裂纹和屈服比的热轧钢板及其制造方法
公开(公告)号：KR101490561B1
公开(公告)日：2015-02-05
申请号：KR1020120150410
申请日：2012-12-21
申请人： 주식회사 포스코
发明人： 김완근 , 심재숙 , 박용근 , 김덕규
IPC分类号： C22C38/00 , C21D8/02 , C21D9/46 , C22C38/38
摘要： 본 발명의 일측면은 채굴 및 정제환경이 보다 열악한 환경에서 재료열화 및 조관 성형성이 향상된 내수소유기균열성 및 항복비가 우수한 박물 열연강판 및 그 제조방법을 제공하고자 한다.

4. 发明公开

KR1020140081079A 내수소유기균열성 및 항복비가 우수한 박물 열연강판 및 그 제조방법 有权
标题翻译：具有优异氢诱导抗裂纹和屈服比的热轧钢板及其制造方法
公开(公告)号：KR1020140081079A
公开(公告)日：2014-07-01
申请号：KR1020120150410
申请日：2012-12-21
申请人： 주식회사 포스코
发明人： 김완근 , 심재숙 , 박용근 , 김덕규
IPC分类号： C22C38/00 , C21D8/02 , C21D9/46 , C22C38/38
CPC分类号： C22C38/28 , C21D8/0226 , C21D8/0263 , C21D2211/005 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/26
摘要： The present invention relates to a thin object hot rolled steel sheet having excellent inner hydrogen organic cracking properties and a yield ratio and a method for manufacturing the thin object hot rolled steel sheet. The present invention provides a thin object hot rolled steel sheet having excellent cracking resistance when external stress is applied in the environment in which the corrosion is easily generated and having excellent corrosion resistance for hydrogen organic cracking. The thin object hot rolled steel sheet according to an embodiment of the present invention contains 0.02-0.05 wt% of C, 0.05-0.5 wt% of Si, 0.5-1.5 wt% of Mn, 0.02-0.05 wt% of Al, 0.01-0.03 wt% of Nb, 0.005-0.02 wt% of Ti, 0.01-0.3 wt% of Cr, 0.0015-0.003 wt% of Ca, 0.003-0.007 wt% of N, 0.01 wt% or less of P (excluding 0%), 0.001 wt% or less of S (excluding 0%), and the remainder consisting of Fe and inevitable impurities.
摘要翻译：本发明涉及具有优异的内氢有机开裂性能和屈服比的薄型热轧钢板以及薄型热轧钢板的制造方法。本发明提供一种在易于产生腐蚀的环境中并且对氢有机开裂具有优异的耐腐蚀性的外部应力时具有优异的耐龟裂性的薄型热轧钢板。根据本发明的一个实施方案的薄型热轧钢板包含C：0.02-0.05重量％，Si：0.05-0.5重量％，Mn：0.5-1.5重量％，Al：0.02-0.05重量％，Al： 0.03重量％的Nb，0.005-0.02重量％的Ti，0.01-0.3重量％的Cr，0.0015-0.003重量％的Ca，0.003-0.007重量％的N，0.01重量％以下的P（不包括0％），0.001重量％以下的S（不包括0％），余量由Fe和不可避免的杂质构成。

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