WO2017105026A8 - 화성처리성 및 구멍확장성이 우수한 초고강도 강판 및 이의 제조방법 - Google Patents

화성처리성 및 구멍확장성이 우수한 초고강도 강판 및 이의 제조방법 Download PDF

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WO2017105026A8
WO2017105026A8 PCT/KR2016/014289 KR2016014289W WO2017105026A8 WO 2017105026 A8 WO2017105026 A8 WO 2017105026A8 KR 2016014289 W KR2016014289 W KR 2016014289W WO 2017105026 A8 WO2017105026 A8 WO 2017105026A8
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ultra
high strength
steel sheet
strength steel
hole expansibility
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French (fr)
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WO2017105026A1 (ko
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서석종
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주식회사 포스코
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Priority to CN201680073487.3A priority Critical patent/CN108463570B/zh
Priority to US15/781,911 priority patent/US20180355453A1/en
Priority to JP2018530888A priority patent/JP6689384B2/ja
Publication of WO2017105026A1 publication Critical patent/WO2017105026A1/ko
Publication of WO2017105026A8 publication Critical patent/WO2017105026A8/ko

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Abstract

본 발명은 자동차용 강판 등으로 사용되는 초고강도 강판에 관한 것으로서, 강판은 중량%로, 탄소(C): 0.08~0.2%, 실리콘(Si): 0.05~1.3%, 망간(Mn): 2.0~3.0%, 인(P): 0.001~0.10%, 황(S): 0.010% 이하, 알루미늄(Al): 0.01~0.1%, 크롬(Cr): 0.3~1.2%, 보론(B): 0.0010~0.0030%, 티타늄(Ti): 0.01~0.05%, 질소(N): 0.001~0.01%,잔부 Fe 및 기타 불가피한 불순물을 포함하고, 상기 Ti 및 N은 [관계식 1] 3.4≤Ti/N≤10 을 만족하고, 상기 Mn, Si 및 Cr은 [관계식 2] 1.0≤Mn/(Si+Cr)를 만족하며, 표층(표면으로부터 두께방향 0.1㎛까지) 내 Mn, Si 및 Cr의 함량이 [관계식 3] 0.7≤Mn/(Si+Cr)≤Mn/(Si+Cr)을 만족하는 화성처리성 및 구멍확장성이 뛰어난 초고강도 강판을 제공한다.
PCT/KR2016/014289 2015-12-15 2016-12-07 화성처리성 및 구멍확장성이 우수한 초고강도 강판 및 이의 제조방법 WO2017105026A1 (ko)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201680073487.3A CN108463570B (zh) 2015-12-15 2016-12-07 化学转化处理性及扩孔性优异的超高强度钢板及其制造方法
US15/781,911 US20180355453A1 (en) 2015-12-15 2016-12-07 Ultra-high strength steel sheet having excellent phosphatability and hole expandability and method for manufacturing same
JP2018530888A JP6689384B2 (ja) 2015-12-15 2016-12-07 化成処理性及び穴拡げ性に優れた超高強度鋼板及びその製造方法

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KR10-2015-0179002 2015-12-15
KR1020150179002A KR101736620B1 (ko) 2015-12-15 2015-12-15 화성처리성 및 구멍확장성이 우수한 초고강도 강판 및 이의 제조방법

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WO2017105026A8 true WO2017105026A8 (ko) 2017-10-19

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KR101736619B1 (ko) 2015-12-15 2017-05-17 주식회사 포스코 화성처리성 및 굽힘가공성이 우수한 초고강도 강판 및 이의 제조방법
BR112022010401A2 (pt) * 2019-12-13 2022-08-23 Arcelormittal Chapa de aço, método de produção de chapa de aço, uso de uma chapa de aço e veículo
JP7264090B2 (ja) * 2020-03-06 2023-04-25 Ｊｆｅスチール株式会社 プレス用鋼板の製造方法、プレス部品の製造方法、及び伸びフランジ成形性の評価方法
CN111676421B (zh) * 2020-05-20 2021-09-28 樟树市兴隆高新材料有限公司 一种马氏体气阀钢轧制坯的轧制方法
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