KR20210003236A - 열간 스탬핑용 강, 열간 스탬핑 방법, 및 열간 스탬핑된 구성요소 - Google Patents
열간 스탬핑용 강, 열간 스탬핑 방법, 및 열간 스탬핑된 구성요소 Download PDFInfo
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- KR20210003236A KR20210003236A KR1020207034235A KR20207034235A KR20210003236A KR 20210003236 A KR20210003236 A KR 20210003236A KR 1020207034235 A KR1020207034235 A KR 1020207034235A KR 20207034235 A KR20207034235 A KR 20207034235A KR 20210003236 A KR20210003236 A KR 20210003236A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
- C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
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- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- C21D1/185—Hardening; Quenching with or without subsequent tempering from an intercritical temperature
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- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/673—Quenching devices for die quenching
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Abstract
Description
도 2는 본 발명을 위한 예시적인 강인, NT1 강의 -40 ℃ 충격 파단 형태를 도시한다.
도 3은, 충격 데이터가 정상일 때, 비교 강인, CS1 강의 충격 파단 형태를 도시한다.
도 4는, 충격 데이터가 비정상일 때, 비교 강인, CS1 강의 충격 파단 형태를 도시한다.
도 5는, 충격 데이터가 비정상일 때, 비교 강인, CS2 강의 충격 파단 형태를 도시한다.
Claims (12)
- 열간 스탬핑용 강에 있어서, 열간 스탬핑용 강은 중량%로, C: 0.2 내지 0.4%, Si: 0 내지 0.8%, Al: 0 내지 1.0%, B: 0 내지 0.005%, Mn: 0.5 내지 3.0%, Mo: 0 내지 1%, Cr: 0 내지 2%, Ni: 0 내지 5%, V: 0 내지 0.4%, Nb: 0 내지 0.2%, Ti: ≤ 0.01%, 그리고 용해 중에 불가피한 P, S, N과 같은 불순물 원소를 포함하고, B ≤ 0.0005%일 때 29*Mo+16*Mn+14*Cr+5.3*Ni ≥ 30%가 만족되며, 0.0005% < B ≤ 0.005%일 때 0.4 내지 1.0%의 Al이 포함되는 것을 특징으로 하는 열간 스탬핑용 강.
- 제1항에 있어서,
중량%로, C 함량은 0.20 내지 0.38%이고, Si 함량은 0.1 내지 0.5%이고, Mn 함량은 0.8 내지 2.2%이며, Cr 함량은 0.1 내지 0.5%이고, Mo 함량은 0.2 내지 0.6%이고, Ti 함량은 0 내지 0.01%인 것을 특징으로 하는 열간 스탬핑용 강. - 제1항에 있어서,
중량%로, C 함량은 0.2 내지 0.4%이고, Si 함량은 0.1 내지 0.5%이고, Mn 함량은 0.8 내지 2.2%이며, Cr 함량은 0.1 내지 0.5%이고, B 함량은 0.0005 내지 0.004%이고, Ti 함량은 0 내지 0.01%이고, Al 함량은 0.4 내지 1%인 것을 특징으로 하는 열간 스탬핑용 강. - 제1항에 있어서,
중량%로, C 함량은 0.3 내지 0.4%이고, Si 함량은 0.1 내지 0.8%이고, Mn 함량은 0.8 내지 2.2%이며, Cr 함량은 0 내지 0.5%이고, B 함량은 0.0005 내지 0.004%이고, Ti 함량은 0 내지 0.01%이고, Al 함량은 0.4 내지 0.9%인 것을 특징으로 하는 열간 스탬핑용 강. - 제1항 내지 제4항 중 어느 한 항에 있어서,
열간 스탬핑용 강은 열간-압연된 강 시트, 열간-압연되고 산세 처리된 시트, 냉간-압연된 강 시트, 또는 코팅을 갖는 강 시트인 것을 특징으로 하는 열간 스탬핑용 강. - 열간 스탬핑 방법에 있어서:
제1항 내지 제5항 중 어느 한 항에 따른 열간 스탬핑용 강 또는 열간 스탬핑용 강의 미리-성형된 구성요소가 제공되고, 800 내지 950 ℃의 온도까지 가열되고 이어서 이러한 온도에서 1 내지 10000 s 동안 유지되는, 강 오스테나이트화 단계;
전술한 강 오스테나이트화 단계 이후에 강 또는 그 미리-성형된 구성요소가 열간 스탬핑 다이로 전달되고, 전달 중에 강의 온도가 550 ℃ 이상에서 유지되는, 강 전달 단계; 및
스탬핑하고, 압력을 유지하고, 다이 내의 강이 10 ℃/s 이상의 평균 냉각 속도로 250 ℃ 이하까지 냉각되도록, 그에 따라 구성요소가 다이를 빠져 나올 때 구성요소의 온도가 250 ℃ 이하가 되게 보장하도록, 냉각을 실행하는, 열간 스탬핑 단계를 포함하는 것을 특징으로 하는 열간 스탬핑 방법. - 제6항에 있어서,
열간 스탬핑 단계 후에, 템퍼링 단계를 포함하고, 템퍼링 단계에서, 성형된 구성요소가 150 내지 200 ℃까지 가열되고 이러한 온도에서 10 내지 40분 동안 유지되거나, 성형된 구성요소가 임의의 방식으로 150 내지 280 ℃까지 가열되고 이어서 이러한 온도에서 0.5 내지 120분 동안 유지되고, 이어서 임의의 방식으로 냉각되는 것을 특징으로 하는 열간 스탬핑 방법. - 제7항에 있어서,
템퍼링 단계가 페인팅 프로세스에 의해서 실행되는 것을 특징으로 하는 열간 스탬핑 방법. - 열간 스탬핑된 구성요소에 있어서, 열간 스탬핑된 구성요소는 중량%로, C: 0.2 내지 0.4%, Si: 0 내지 0.8%, Al: 0 내지 1.0%, B: 0 내지 0.005%, Mn: 0.5 내지 3.0%, Mo: 0 내지 1%, Cr: 0 내지 2%, Ni: 0 내지 5%, V: 0 내지 0.4%, Nb: 0 내지 0.2%, Ti: ≤ 0.01%, 그리고 용해 중에 불가피한 P, S, N과 같은 불순물 원소를 포함하고, B ≤ 0.0005%일 때 29*Mo+16*Mn+14*Cr+5.3*Ni ≥ 30%가 만족되며, 0.0005% < B ≤ 0.005%일 때 0.4 내지 1.0%의 Al이 포함되는 것을 특징으로 하는 열간 스탬핑된 구성요소.
- 제9항에 있어서,
중량%로, C 함량은 0.20 내지 0.38%이고, Si 함량은 0.1 내지 0.5%이고, Mn 함량은 0.8 내지 2.2%이며, Cr 함량은 0.1 내지 0.5%이고, Mo 함량은 0.2 내지 0.6%이고, Ti 함량은 0 내지 0.01%인 것을 특징으로 하는 열간 스탬핑된 구성요소. - 제9항에 있어서,
중량%로, C 함량은 0.24 내지 0.4%이고, Si 함량은 0.1 내지 0.5%이고, Mn 함량은 0.8 내지 2.2%이며, Cr 함량은 0.1 내지 0.5%이고, B 함량은 0.0005 내지 0.004%이고, Ti 함량은 0 내지 0.01%이고, Al 함량은 0.4 내지 0.9%인 것을 특징으로 하는 열간 스탬핑된 구성요소. - 제9항에 있어서,
중량%로, C 함량은 0.3 내지 0.4%이고, Si 함량은 0.1 내지 0.8%이고, Mn 함량은 0.8 내지 2.2%이며, Cr 함량은 0 내지 0.5%이고, B 함량은 0.0005 내지 0.004%이고, Ti 함량은 0 내지 0.01%이고, Al 함량은 0.4 내지 0.9%인 것을 특징으로 하는 열간 스탬핑된 구성요소.
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- 2018-12-27 ES ES18917017T patent/ES2972661T3/es active Active
- 2018-12-27 WO PCT/CN2018/124171 patent/WO2019205699A1/zh not_active Ceased
- 2018-12-27 US US17/050,851 patent/US12297517B2/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20130014520A (ko) * | 2010-04-01 | 2013-02-07 | 티센크루프 스틸 유럽 악티엔게젤샤프트 | 강, 강판 제품, 강 부품 및 강 부품의 제조 방법 |
| KR20170086035A (ko) * | 2014-11-18 | 2017-07-25 | 아르셀러미탈 | 고강도 강 제품을 제조하는 방법 및 그로 인해 얻어지는 강 제품 |
| JP2016108644A (ja) * | 2014-12-10 | 2016-06-20 | 株式会社神戸製鋼所 | ホットスタンプ用鋼板、および該鋼板を用いたホットスタンプ成形部品 |
| KR20170113858A (ko) * | 2016-03-28 | 2017-10-13 | 주식회사 포스코 | 항복강도와 연성이 우수한 고강도 냉연강판, 도금강판 및 이들의 제조방법 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108374127A (zh) | 2018-08-07 |
| CN114703427A (zh) | 2022-07-05 |
| US20210214818A1 (en) | 2021-07-15 |
| WO2019205699A1 (zh) | 2019-10-31 |
| US12297517B2 (en) | 2025-05-13 |
| KR102745823B1 (ko) | 2024-12-20 |
| EP3789509A4 (en) | 2021-11-10 |
| JP2021522417A (ja) | 2021-08-30 |
| EP3789509B1 (en) | 2024-02-07 |
| ES2972661T3 (es) | 2024-06-13 |
| EP3789509A1 (en) | 2021-03-10 |
| JP7336144B2 (ja) | 2023-08-31 |
| EP3789509C0 (en) | 2024-02-07 |
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