KR20150127298A - 온간 가공성이 우수한 고강도 강판 및 그 제조 방법 - Google Patents
온간 가공성이 우수한 고강도 강판 및 그 제조 방법 Download PDFInfo
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Abstract
Description
Claims (7)
- 인장 강도:590 ㎫ 이상의 고강도를 갖는 고강도 강판으로서, 시험 온도:400 ℃ 이상에서 실시한 인장 시험으로 얻어진, 최고 하중을 나타낸 후 파단까지의 변형량이 인장 개시부터 그 최고 하중을 나타내기 전까지의 변형량보다 크고, 또한 시험 온도:400 ℃ 미만에서 실시한 인장 시험으로 얻어진, 인장 개시부터 최고 하중을 나타내기 전까지의 변형량이 인장 개시부터 파단까지의 전체 변형량에 대한 비율로 40 % 이상인 인장 특성과, 페라이트상의 면적률이 95 % 이상인 실질적으로 페라이트상 단상의 매트릭스와 그 매트릭스 중에 크기가 10 ㎚ 미만인 합금 탄화물이 베어리언트 선택이 없는 상태에서 분산 석출된 조직을 갖는 것을 특징으로 하는 온간 가공성이 우수한 고강도 강판.
- 제 1 항에 있어서,
질량% 로,
C:0.01 ∼ 0.2 %, Si:0.5 % 이하,
Mn:2 % 이하, P:0.03 % 이하,
S:0.01 % 이하, Al:0.07 % 이하,
N:0.01 % 이하
를 함유하고, 추가로 Ti:0.005 ∼ 0.3 %, Nb:0.005 ∼ 0.6 %, V:0.005 ∼ 1.0 %, Mo:0.005 ∼ 0.5 %, W:0.01 ∼ 1.0 %, B:0.0005 ∼ 0.0040 % 중에서 선택된 1 종 또는 2 종 이상을 함유하고, 잔부 Fe 및 불가피적 불순물로 이루어지는 조성을 갖는 것을 특징으로 하는 고강도 강판. - 제 1 항 또는 제 2 항에 있어서,
상기 고강도 강판이 표면에 도금층을 갖는 것을 특징으로 하는 고강도 강판. - 제 3 항에 있어서,
상기 도금층이 용융 아연 도금층 또는 합금화 용융 아연 도금층인 것을 특징으로 하는 고강도 강판. - 질량% 로,
C:0.01 ∼ 0.2 %, Si:0.5 % 이하,
Mn:2 % 이하, P:0.03 % 이하,
S:0.01 % 이하, Al:0.07 % 이하,
N:0.01 % 이하
를 함유하고, 추가로 Ti:0.005 ∼ 0.3 %, Nb:0.005 ∼ 0.6 %, V:0.005 ∼ 1.0 %, Mo:0.005 ∼ 0.5 %, W:0.01 ∼ 1.0 %, B:0.0005 ∼ 0.0040 % 중에서 선택된 1 종 또는 2 종 이상을 함유하고, 잔부 Fe 및 불가피적 불순물로 이루어지는 조성을 갖는 강 소재를, 오스테나이트 단상 온도역으로 가열한 후, 마무리 압연 종료 온도:860 ℃ 이상으로 하는 열간 압연을 실시하고, 권취 온도:400 ℃ 이상 600 ℃ 미만에서 권취하여, 열연판으로 하는 열연 공정과, 이어서 그 열연판의 표면 스케일을 제거한 후, 그 열연판에 650 ∼ 750 ℃ 의 온도역에서 열처리를 실시하는 열처리 공정을 순차 실시하는 것을 특징으로 하는 인장 강도:590 ㎫ 이상을 갖고, 온간 가공성이 우수한 고강도 강판의 제조 방법. - 제 5 항에 있어서,
상기 열처리 공정이 실시된 열연판에 추가로 도금 처리를 실시하는 것을 특징으로 하는 고강도 강판의 제조 방법. - 제 5 항에 있어서,
상기 열처리 공정에 이어서 용융 아연 도금 처리, 혹은 추가로 합금화 처리를 실시하는 것을 특징으로 하는 고강도 강판의 제조 방법.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010090796A JP5609223B2 (ja) | 2010-04-09 | 2010-04-09 | 温間加工性に優れた高強度鋼板およびその製造方法 |
| JPJP-P-2010-090796 | 2010-04-09 | ||
| PCT/JP2011/059459 WO2011126154A1 (ja) | 2010-04-09 | 2011-04-11 | 温間加工性に優れた高強度鋼板およびその製造方法 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020127026949A Division KR20120135521A (ko) | 2010-04-09 | 2011-04-11 | 온간 가공성이 우수한 고강도 강판 및 그 제조 방법 |
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| Publication Number | Publication Date |
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| KR20150127298A true KR20150127298A (ko) | 2015-11-16 |
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| KR1020157031295A Ceased KR20150127298A (ko) | 2010-04-09 | 2011-04-11 | 온간 가공성이 우수한 고강도 강판 및 그 제조 방법 |
| KR1020127026949A Ceased KR20120135521A (ko) | 2010-04-09 | 2011-04-11 | 온간 가공성이 우수한 고강도 강판 및 그 제조 방법 |
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Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20130192725A1 (ko) |
| EP (1) | EP2557193B1 (ko) |
| JP (1) | JP5609223B2 (ko) |
| KR (2) | KR20150127298A (ko) |
| CN (1) | CN102834539B (ko) |
| CA (1) | CA2795714C (ko) |
| TW (1) | TWI485261B (ko) |
| WO (1) | WO2011126154A1 (ko) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103597106B (zh) | 2011-06-10 | 2016-03-02 | 株式会社神户制钢所 | 热压成形品、其制造方法和热压成形用薄钢板 |
| JP5754279B2 (ja) * | 2011-07-20 | 2015-07-29 | Jfeスチール株式会社 | 温間成形用高強度鋼板およびその製造方法 |
| WO2013061543A1 (ja) * | 2011-10-25 | 2013-05-02 | Jfeスチール株式会社 | 高張力熱延鋼板およびその製造方法 |
| JP5321671B2 (ja) * | 2011-11-08 | 2013-10-23 | Jfeスチール株式会社 | 強度と加工性の均一性に優れた高張力熱延鋼板およびその製造方法 |
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| US20070144633A1 (en) * | 2004-03-31 | 2007-06-28 | Taro Kizu | High-stiffness high-strength thin steel sheet and method for producing the same |
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| KR101103203B1 (ko) * | 2008-03-26 | 2012-01-05 | 신닛뽄세이테쯔 카부시키카이샤 | 피로 특성과 신장 플랜지성이 우수한 열연 강판 및 그 제조 방법 |
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| JP2011219826A (ja) | 2011-11-04 |
| CN102834539B (zh) | 2015-04-08 |
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| EP2557193A1 (en) | 2013-02-13 |
| CA2795714C (en) | 2015-11-24 |
| EP2557193A4 (en) | 2017-04-19 |
| CN102834539A (zh) | 2012-12-19 |
| TWI485261B (zh) | 2015-05-21 |
| KR20120135521A (ko) | 2012-12-14 |
| EP2557193B1 (en) | 2020-04-01 |
| WO2011126154A1 (ja) | 2011-10-13 |
| CA2795714A1 (en) | 2011-10-13 |
| TW201215685A (en) | 2012-04-16 |
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