专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

KR101758484B1 저온 변형시효 충격특성 및 용접 열영향부 충격특성이 우수한 고강도 강재 및 이의 제조방법 有权
公开(公告)号：KR101758484B1
公开(公告)日：2017-07-17
申请号：KR1020150178988
申请日：2015-12-15
申请人： 주식회사 포스코
发明人： 엄경근 , 김우겸
IPC分类号： C22C38/58 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/44 , C22C38/42 , C22C38/06 , C22C38/02 , C21D8/02 , C21D1/28
CPC分类号： C21D8/02 , C22C38/02 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/58
摘要： 본발명은압력용기, 해양구조용등의소재로사용되는강재에관한것으로서, 보다상세하게는저온변형시효충격특성및 용접열영향부충격특성이우수한고강도강재및 이의제조방법에관한것이다.

2. 发明授权

KR101758483B1 저온 변형시효 충격특성이 우수한 고강도 강재 및 이의 제조방법 有权
公开(公告)号：KR101758483B1
公开(公告)日：2017-07-17
申请号：KR1020150178977
申请日：2015-12-15
申请人： 주식회사 포스코
发明人： 엄경근 , 김우겸 , 이홍주
IPC分类号： C22C38/58 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/44 , C22C38/42 , C22C38/06 , C22C38/02 , C21D8/02 , C21D1/28
CPC分类号： C21D8/02 , C22C38/02 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/58
摘要： 본발명은압력용기, 해양구조용등으로사용되는강재에관한것으로서, 보다상세하게는저온변형시효충격특성이우수한고강도강재및 이의제조방법에관한것이다.

3. 发明授权

KR101746973B1 저온 변형시효 충격특성이 우수한 고강도 강재 및 이의 제조방법 有权
标题翻译：低温变形老化冲击性能优良的高强度钢及其制造方法
公开(公告)号：KR101746973B1
公开(公告)日：2017-06-14
申请号：KR1020150178983
申请日：2015-12-15
申请人： 주식회사 포스코
发明人： 엄경근 , 김우겸
IPC分类号： C22C38/58 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/44 , C22C38/42 , C22C38/06 , C22C38/02 , C21D8/02 , C21D1/28
摘要： 본발명은압력용기, 해양구조용등의소재로사용되는강재에관한것으로서, 보다상세하게는저온변형시효충격특성이우수한고강도강재및 이의제조방법에관한것이다.
摘要翻译：本发明涉及压力容器，涉及的钢材料被用作诸如海洋结构，并且更具体地，低温应变时效性优异的冲击性能以及制造该高强度钢板的制造方法。

4. 发明授权

KR101125895B1 인성이 우수한 고강도 해변용 내후성강의 제조방법 有权
公开(公告)号：KR101125895B1
公开(公告)日：2012-06-12
申请号：KR1020040098152
申请日：2004-11-26
申请人： 주식회사 포스코
发明人： 엄경근 , 정의경 , 최종교 , 이재상
IPC分类号： C21D8/02 , C22C38/04
摘要： 본 발명은 우수한 인성과 강도를 나타내는 해변용 내후성 강재 및 그 제조방법에 관한 것으로, 보다 상세하게는 저온에서도 취성파괴를 일으키기 않으며 염소이온의 농도가 높은 부식환경하에서 우수한 내식성을 갖는 인성과 내식성이 우수한 고강도 내후성 강재 및 그 제조방법에 관한 것이다.
본 발명은, 중량%로, C: 0.15% 이하, Si: 1.0% 이하, Mn: 2.0% 이하, Cu: 0.2~1.0%, Ni: 0.2~5.0%, Al: 0.001~0.1%, P: 0.03% 이하, S: 0.002~0.03%, Ca: 0.001~0.01%, 나머지 Fe 및 기타 불가피한 불순물로 조성되고, 상기 성분중에서 Ca, S, Al, Si이 하기 관계식1,
[관계식1]
Ca(%)/S(%) > [1.5Al(%)+2Si(%)]
을 만족하며, 강중 Ca계 비금속개재물중 수용성 CaS 개재물의 분율이 30% 이상인 해변 내후성이 우수한 강재를, 오스테나이트 미재결정영역 이하에서의 누적압하율이 30% 이상 되도록 열간압연한 후 냉각하는 것을 특징으로 한다.

고강도, 고인성, 내후성, 압하율, 오스테나이트 재결정온도

5. 发明公开

KR1020090069870A 용접열영향부의 저온인성과 인장강도가 우수한 고강도저항복비 구조용 강재 및 그 제조방법 有权
标题翻译：具有优异的低温TOUGHNETSS结构的钢，其受热区域的拉伸强度和低屈服比，其制造方法
公开(公告)号：KR1020090069870A
公开(公告)日：2009-07-01
申请号：KR1020070137687
申请日：2007-12-26
申请人： 주식회사 포스코
发明人： 엄경근 , 최종교 , 박인규
IPC分类号： C22C38/00 , C21D8/02
CPC分类号： C22C38/14 , C21D8/0226 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/42
摘要： A high intensity resistance yield ratio structural steel and a manufacturing method thereof are provided to have the low temperature toughness and intensity of the steel material by controlling a shape and kind of organization and a component system. A manufacturing method of a high intensity resistance yield ratio structural steel comprises: a step of heating steel slab of the composition satisfying a condition, that a formula(Ti+0.2Nb)/N is over than 2.5 and less than 5.5, at 900~1300°C; a step of rough rolling the steel slab with reduction rate more than 50%; a step of performing the finishing rolling to make the reduction rate at Ar3 to Ae3 over 60% even though the rolling is completed at Ar3 to Ae3; and a step of cooling at higher than 10°C/sec and stopping cooling at a temperature of less than 450°C. The steel slab includes one or more than two kind groups selected from the groups consisting of Cr 0.05~1.0 weight%; Ni 0.01~2.0 weight%; or Cu 0.01~10 weight%. The Cr is added in order to increase the intensity. The Ni is added in order to improve the intensity and toughness of the base material. The Cu minimizes the toughness degradation of the base material and is added in order to increase the intensity.
摘要翻译：通过控制组织的形状和种类以及组件系统，提供高强度电阻屈服比的结构钢及其制造方法来具有低温韧性和强度。高强度电阻屈服比结构钢的制造方法包括：对于满足条件的钢板的钢板，其中式（Ti + 0.2Nb）/ N超过2.5且小于5.5，在900〜 1300℃; 降低钢筋粗钢的步骤为50％以上; 即使在Ar3〜Ae3完成轧制，进行精轧的步骤使Ar3〜Ae3的还原率达到60％以上; 以及高于10℃/秒的冷却步骤，并在低于450℃的温度下停止冷却。钢坯包含选自Cr 0.05〜1.0重量％的一种或两种以上的基团; Ni 0.01〜2.0重量％或Cu 0.01〜10重量％。添加Cr以增加强度。添加Ni以提高基材的强度和韧性。 Cu使基材的韧性降低最小化并加入以增加强度。

6. 发明授权

KR100833076B1 저온인성과 취성균열전파정지특성이 우수한 고강도저항복비 구조용 강재 및 그 제조방법 有权
标题翻译：具有优异的低温韧性和脆性裂纹性能的结构的高强度和低屈服比钢，其生产方法
公开(公告)号：KR100833076B1
公开(公告)日：2008-05-27
申请号：KR1020060132272
申请日：2006-12-22
申请人： 주식회사 포스코
发明人： 엄경근
IPC分类号： C22C38/00 , C21D8/02
CPC分类号： C22C38/14 , C21D8/0226 , C21D2211/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/16 , C22C38/18
摘要： A high strength steel that satisfies low temperature toughness, brittle crack arrest properties, and low yield ratio by properly controlling a composition for the steel and differently controlling surface structure and internal structure of the steel is provided, and a manufacturing method of the high strength steel is provided. A manufacturing method of a high strength and low yield ratio steel for structure having excellent low temperature toughness and brittle crack arrest properties comprises the steps of: rough rolling the reheated steel slab at a temperature of 1250 to 1000 deg.C after reheating a steel slab comprising, by weight percent, 0.03 to 0.12% of C, 0.01 to 0.8% of Si, 0.3 to 2.5% of Mn, 0.02% or less of P, 0.01% or less of S, 0.005 to 0.5% of Al, 0.005 to 0.1% of Nb, 3 to 50 ppm of B, 0.005 to 0.1% of Ti, 15 to 150 ppm of N, and the balance of Fe and inevitable impurities; cooling the rough rolled slab to not higher than the bainite transformation starting temperature in a cooling rate of at least 1 deg.C/sec and recurring the cooled slab; finish rolling the recurred slab at a total rolling reduction of at least 30% to manufacture the slab into a steel sheet; and air-cooling or water-cooling the steel sheet. The cooling after the rough rolling is performed to not higher than a temperature at which a surface of the steel sheet has at least 50% of bainite occupancy rate. The steel further comprises one or more selected from the group consisting of 0.05 to 1.0% of Cr, 0.01 to 1.0% of Mo, 0.01 to 2.0% of Ni, 0.01 to 1.0% of Cu, and 0.005 to 0.3% of V.
摘要翻译：提供了通过适当地控制钢的组成和不同地控制钢的表面结构和内部结构来满足低温韧性，脆性裂纹阻止性能和低屈服比的高强度钢，以及高强度钢的制造方法被提供。具有优异的低温韧性和脆性断裂性的结构的高强度和低屈服比钢的制造方法包括以下步骤：在再加热钢板之后将再热钢坯坯在1250至1000℃的温度下粗轧其中，C：0.03〜0.12％，Si：0.01〜0.8％，Mn：0.3〜2.5％，P：0.02％以下，S：0.01％以下，Al：0.005〜0.5％ Nb的0.1％，B为3〜50ppm，Ti为0.005〜0.1％，N为15〜150ppm，余量为Fe和不可避免的杂质; 将粗轧板坯以不低于贝氏体转变开始温度的冷却速度至少为1℃/秒，并将冷却的板坯重复冷却; 将复合板坯以至少30％的总压下率进行精轧，将板坯制造成钢板; 并对钢板进行空冷或水冷。进行粗轧后的冷却不高于钢板表面的贝氏体占有率的50％以上的温度。钢还包含选自Cr，0.05〜1.0％，Mo：0.01〜1.0％，Ni：0.01〜2.0％，Cu：0.01〜1.0％，以及0.005〜0.3％

7. 发明授权

KR100833075B1 저온인성과 취성균열전파정지특성이 우수한 고강도저항복비 구조용 강재 및 그 제조방법 有权
标题翻译：具有优异的低温韧性和脆性裂纹性能的结构的高强度和低屈服比钢，其生产方法
公开(公告)号：KR100833075B1
公开(公告)日：2008-05-27
申请号：KR1020060132274
申请日：2006-12-22
申请人： 주식회사 포스코
发明人： 엄경근
IPC分类号： C22C38/00 , C21D8/02
CPC分类号： C22C38/14 , C21D8/0226 , C21D2211/005 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/18
摘要： A high strength steel that satisfies low temperature toughness, brittle crack arrest properties, and low yield ratio is provided, and a manufacturing method of the high strength steel is provided. A high strength and low yield ratio steel for structure having excellent low temperature toughness and brittle crack arrest properties has a steel composition comprising, by weight percent, 0.03 to 0.12% of C, 0.01 to 0.8% of Si, 0.3 to 2.5% of Mn, 0.02% or less of P, 0.01% or less of S, 0.005 to 0.5% of Al, 0.005 to 0.1% of Nb, 3 to 50 ppm of B, 0.005 to 0.1% of Ti, 15 to 150 ppm of N, and the balance of Fe and inevitable impurities, and has a structure comprising martensite-austenite constituent with an average size of 10 mum or less and an area fraction of 3 to 15%, and polygonal ferrite phase with an average size of 5 mum or less and an area fraction of 85 to 97%. The steel composition further comprises one or more selected from the group consisting of 0.05 to 1.0% of Cr, 0.01 to 1.0% of Mo, 0.01 to 2.0% of Ni, 0.01 to 1.0% of Cu, and 0.005 to 0.3% of V.
摘要翻译：提供了一种满足低温韧性，脆性断裂性能和低屈服比的高强度钢，并提供了高强度钢的制造方法。具有优异的低温韧性和脆性断裂性能的结构的高强度低屈服比钢具有以下组成的钢组成：以C：0.03〜0.12％，Si：0.01〜0.8％，Mn：0.3〜2.5％，0.02％以下的P，0.01％以下的S，0.005〜0.5％的Al，0.005〜0.1％的Nb，3〜50ppm的B，0.005〜0.1％的Ti，15〜150ppm的N， Fe和不可避免的杂质的平衡，具有包含平均粒径为10μm以下，面积率为3〜15％的马氏体 - 奥氏体组分和平均粒径为5μm以下的多边形铁素体相的结构面积分数为85〜97％。该钢组合物还含有选自由Cr：0.05〜1.0％，Mo：0.01〜1.0％，Ni：0.01〜2.0％，Cu：0.01〜1.0％，V：0.005〜0.3％

8. 发明授权

KR100833068B1 저항복비를 가진 초세립 열간압연 강재 有权
标题翻译：具有低成本率的精细热轧钢
公开(公告)号：KR100833068B1
公开(公告)日：2008-05-27
申请号：KR1020060132266
申请日：2006-12-22
申请人： 주식회사 포스코
发明人： 최종교 , 엄경근
IPC分类号： C22C38/00 , C21D8/02
CPC分类号： C22C38/02 , C21D8/0226 , C21D2211/005 , C21D2211/008 , C22C38/04 , C22C38/08 , C22C38/12 , C22C38/18
摘要： A high strength and high ductility hot-rolled steel with a tensile strength of at least 780 MPa and an internal structure consisting of micro-ferrite and martensite is provided, wherein the steel is easily manufactured through ordinary rolling facilities and alloy composition by controlling a grain size of ferrite of the steel to a ultrafine grain size while reducing contents of alloy components to prevent deterioration of welding characteristics or formability. A ultrafine-grained hot rolled steel with a low yield ratio comprises, by weight percent, 0.03 to 0.2% of C, 0.1 to 0.5% of Si, and 0.015% or less of P with the balance being Fe and other inevitable impurities, and has not more than 0.40% of a carbon equivalent(Ceq) defined by Ceq(%)=%C+%Mn/6+(%Cr+%Mo)/5+%Ni/15, wherein an internal structure of the steel comprises 70 to 80% of micro ferrite with a grain size of 5 mum or less and 20 to 30% of martensite. The steel further comprises at least one component selected from the group consisting of 2.0% or less of Mn, 1.0% or less of Cr, 1.0% or less of Mo, and 3.0% or less of Ni.
摘要翻译：提供拉伸强度为至少780MPa的高强度高延展性热轧钢和由微细铁素体和马氏体组成的内部结构，其中通过普通轧制设备和通过控制晶粒的合金组成容易地制造钢将钢的铁素体尺寸调整为超细晶粒尺寸，同时减少合金部件的含量，以防止焊接特性或成形性的劣化。低产率的超细晶粒热轧钢包含C：0.03〜0.2％，Si 0.1〜0.5％，P：0.015％以下，余量为Fe等不可避免的杂质，以及由Ceq（％）=％C +％Mn / 6 +（％Cr +％Mo）/ 5 +％Ni / 15定义的不超过0.40％的碳当量（Ceq），其中钢的内部结构包括70 至80％的粒径为5μm以下的微细铁素体和20〜30％的马氏体。该钢还包含选自Mn：2.0％以下，Cr：1.0％以下，Mo：1.0％以下，Ni：3.0％以下的至少一种成分。

9. 发明授权

KR100782785B1 초세립 열연 이상조직강 및 그의 제조 방법 有权
标题翻译：具有细粒度的热轧双相钢及其生产方法
公开(公告)号：KR100782785B1
公开(公告)日：2007-12-05
申请号：KR1020060132265
申请日：2006-12-22
申请人： 주식회사 포스코
发明人： 최종교 , 엄경근
IPC分类号： C21D8/00 , C22C38/00
CPC分类号： C22C38/001 , C21D8/0226 , C21D2211/005 , C21D2211/008 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/12 , C22C38/14
摘要： A hot-rolled dual-phase steel with fine-grain and a manufacturing method thereof are provided to easily manufacture the hot-rolled dual-phase steel by simplifying a cooling process. A manufacturing method of a hot-rolled dual-phase steel with fine-grain includes the steps of: re-heating a steel material at 900~1300deg.c including C: 0.02~0.3%, Si: 0.05~1.5%, Mn: 0.2~2.5%, N:0.003~0.03%, P: less than 0.03%, S: less than 0.005%, Fe, and necessary impurities; rough-rolling the re-heated steel material with more than 50% of a total reduction rate; starting to roll the steel material at more than Ae6 temperature with 70~95% of the total reduction rate, rolling the steel material at Ae6~Ar6 temperature with accumulated reduction rate, and ending the rolling process at more than Ar6 temperature; and cooling and winding the steel material at less than 350deg.c.
摘要翻译：提供一种具有细粒度的热轧双相钢及其制造方法，通过简化冷却工艺容易地制造热轧双相钢。具有细晶粒的热轧双相钢的制造方法包括以下步骤：对900〜1300℃的钢材进行再加热，包括C：0.02〜0.3％，Si：0.05〜1.5％，Mn： 0.2〜2.5％，N：0.003〜0.03％，P：小于0.03％，S：小于0.005％，Fe和必要的杂质; 将再热钢材粗轧超过总减量率的50％以上; 开始以大于Ae6温度滚轧钢材，总压下率为70〜95％，累积压下率为Ae6〜Ar6的钢材，以Ar6温度结束轧制; 并将钢材冷却和卷绕在350℃以下。

10. 发明公开

KR1020060071101A 인성이 우수한 고강도 해변용 내후성강의 제조방법 有权
标题翻译：生产具有优异的韧性和高强度的耐候性钢在海洋大气中使用的方法
公开(公告)号：KR1020060071101A
公开(公告)日：2006-06-26
申请号：KR1020040109221
申请日：2004-12-21
申请人： 주식회사 포스코
发明人： 엄경근 , 최종교
IPC分类号： C21D8/00 , C22C38/00
CPC分类号： C22C38/16 , C22C38/002 , C22C38/004 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/08 , C22C38/12 , C22C38/14
摘要： 본 발명은 우수한 인성과 강도를 나타내는 해변용 내후성 강재 및 그 제조방법에 관한 것으로, 보다 상세하게는 저온에서도 취성파괴를 일으키기 않으며 염소이온의 농도가 높은 부식환경하에서 우수한 내식성을 갖는 인성과 내식성이 우수한 고강도 내후성 강재 및 그 제조방법에 관한 것이다. 본 발명은, 중량%로, C: 0.15% 이하, Si: 1.0% 이하, Mn: 2.0% 이하, Cu: 0.2~1.0%, Ni: 0.2~5.0%, Al: 0.001~0.1%, P: 0.03% 이하, S: 0.002~0.03%, Ca: 0.001~0.01%, Nb: 0.02~0.07%, V: 0.1% 이하 및 B: 0.003% 이하, 나머지 Fe 및 기타 불가피한 불순물로 조성되고, 상기 성분중에서 Ca, S, Al, Si이 하기 관계식1,
[관계식1] Ca(%)/S(%) > [1.5Al(%)+2Si(%)]
을 만족하며, 강중 Ca계 비금속개재물중 수용성 CaS 개재물의 분율이 30% 이상인 해변 내후성이 우수한 강재를, 오스테나이트 미재결정영역 이하에서의 누적압하율이 30% 이상 되도록 열간압연한 후 하기 관계식 3을 만족하는 냉각속도로 하기 관계식 4를 만족하는 냉각정지온도까지 냉각하는 것을 특징으로 한다.
[관계식3] 냉각속도(℃/sec) ≥ 9.7 / {[%Mn] + [%Cu] + [%Ni] + 20 × ( [%Si]/30 + [%Mo]/10 )}
[관계식4] 냉각정지온도(℃) ≤ 865 - 272×[%C] - 74×[%Mn] - 9×[%Mo] - 5×[%Cu]
고강도, 고인성, 내후성, 압하율, 오스테나이트 재결정온도

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式