KR102903008B1 - 도막 부착력이 우수한 열간 성형 부재 및 이의 제조 방법 - Google Patents
도막 부착력이 우수한 열간 성형 부재 및 이의 제조 방법Info
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- KR102903008B1 KR102903008B1 KR1020227020168A KR20227020168A KR102903008B1 KR 102903008 B1 KR102903008 B1 KR 102903008B1 KR 1020227020168 A KR1020227020168 A KR 1020227020168A KR 20227020168 A KR20227020168 A KR 20227020168A KR 102903008 B1 KR102903008 B1 KR 102903008B1
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- formed member
- aluminum plating
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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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- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
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- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
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- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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- C21D2261/00—Machining or cutting being involved
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Abstract
Description
| 실시예 | C | Si | Mn | P | S | Al | Ti | B | Cr | Nb | V |
| 1 | 0.02 | 0.05 | 0.12 | 0.059 | 0.038 | 0.09 | 0.090 | 0.0005 | 0.15 | - | - |
| 2 | 0.06 | 0.23 | 1.19 | 0.015 | 0.001 | 0.04 | 0.030 | 0.040 | 0.27 | - | - |
| 3 | 0.49 | 0.50 | 2.51 | 0.024 | 0.04 | 0.08 | 0.027 | 0.0052 | 0.51 | 0.002 | 0.002 |
| 4 | 0.39 | 0.36 | 3.00 | 0.044 | 0.03 | 0.07 | 0.05 | 0.0062 | 0.71 | 0.003 | 0.005 |
| 5 | 0.78 | 0.48 | 0.50 | 0.081 | 0.02 | 0.05 | 0.48 | 0.0071 | 0.20 | 0.1 | - |
| 6 | 0.15 | 0.10 | 2.90 | 0.059 | 0.038 | 0.09 | 0.090 | 0.0031 | 0.15 | - | - |
| 7 | 0.25 | 0.23 | 1.19 | 0.015 | 0.001 | 0.04 | 0.030 | 0.0040 | 0.27 | - | - |
| 8 | 0.49 | 0.50 | 2.51 | 0.024 | 0.04 | 0.08 | 0.027 | 0.0052 | 0.51 | 0.005 | 0.008 |
| 9 | 0.39 | 0.36 | 3.00 | 0.044 | 0.03 | 0.07 | 0.05 | 0.0062 | 0.71 | - | - |
| 10 | 0.50 | 0.9 | 0.50 | 0.081 | 0.02 | 0.05 | 0.20 | 0.09 | 0.20 | - | - |
| 비교예 1 | 0.25 | 0.23 | 1.19 | 0.015 | 0.001 | 0.04 | 0.030 | 0.0040 | 0.27 | - | - |
| 실시예 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 비교예1 | ||
| 알루미늄 도금층의 중량 평균값, 단면당 g/m2 | 23 | 30 | 50 | 60 | 100 | 70 | 80 | 85 | 80 | 75 | 75 | ||
| 두께, mm | 1.2 | 0.9 | 1 | 2.8 | 1.1 | 1.5 | 1.8 | 2 | 2.4 | 2.8 | 1.5 | ||
| 조질 압연율/% | 0.5 | 0.8 | 1.5 | 0.3 | 0.6 | 0.7 | 1 | 1.2 | 1.8 | 2 | 0.7 | ||
| 조질 압연 롤러 거칠기/㎛ | 0.5 | 1.2 | 3 | 1 | 1.5 | 1.5 | 1.8 | 1.2 | 1.9 | 2.8 | 0.3 | ||
| 판재 열처리 및 핫 스탬핑 전의 거칠기 | Ra/㎛ | 0.3 | 0.8 | 2 | 0.9 | 1.3 | 1 | 1.1 | 0.8 | 0.7 | 1.5 | 0.2 | |
| Rpc | 50 | 90 | 150 | 90 | 50 | 100 | 70 | 130 | 90 | 80 | 25 | ||
| 열처리 및 핫 스탬핑 후 완제품 거칠기 | Ra/㎛ | 1.8 | 1.8 | 1.9 | 2 | 2.3 | 2 | 1.9 | 1.9 | 1.8 | 2.4 | 1.3 | |
| Rt/㎛ | 12 | 13 | 18 | 19 | 20 | 21 | 18 | 19 | 19 | 22 | 9 | ||
| Rpc | 90 | 100 | 120 | 120 | 160 | 170 | 150 | 160 | 140 | 170 | 40 | ||
| 합금층 중 50%Al층 두께/㎛ | 15 | 18 | 20 | 25 | 35 | 26 | 20 | 28 | 26 | 20 | 20 | ||
| 확산층의 두께/㎛ | 5 | 6 | 7 | 8 | 16 | 10 | 8 | 8 | 8 | 8 | 8 | ||
| 알루미늄 도금층 총 두께/Mm | 22 | 25 | 30 | 33 | 60 | 40 | 35 | 40 | 38 | 30 | 30 | ||
| 스탬핑 후 제품 인장강도 /MPa | 500 | 700 | 1820 | 2000 | 1900 | 1000 | 1550 | 1590 | 1600 | 1580 | 1500 | ||
| 스탬핑 후 제품 항복강도/MPa | 400 | 500 | 1250 | 1350 | 1200 | 1050 | 1000 | 980 | 1100 | 1100 | 1100 | ||
| 연신율/% | 19 | 15 | 5 | 4 | 4.5 | 6 | 7 | 6 | 6 | 6 | 6 | ||
| 도장성 | 도막 전처리 후 표면 균일 | 불균일 | |||||||||||
| 도장 후 도막 부착력 | 1 레벨 |
1 레벨 |
2 레벨 |
2 레벨 |
1 레벨 |
1 레벨 |
2 레벨 |
1 레벨 |
2 레벨 |
1 레벨 |
5레벨 | ||
| 내식성, mm | 1 | 1.5 | 3 | 3.5 | 2 | 2.3 | 3.5 | 3 | 3.8 | 3 | 5 | ||
Claims (23)
- 도막 부착력이 우수한 열간 성형 부재에 있어서,
기재층 및 기재층의 적어도 하나의 표면에 도금된 알루미늄 도금층을 포함하고, 상기 열간 성형 부재 표면의 평균 거칠기 Ra는 1.0 내지 3.0μm이고, 피크와 밸리의 높이 Rt는 8 내지 30μm이고, 거칠기 피크 카운트 Rpc는 50 내지 250인 것을 특징으로 하는 도막 부착력이 우수한 열간 성형 부재. - 제1항에 있어서,
상기 알루미늄 도금층은 기재층과 인접한 확산층 및 알루미늄 도금층 표면에 위치한 합금층을 포함하고, 여기에서 확산층의 두께와 알루미늄 도금층 총 두께의 비율은 0.08 내지 0.5인 것을 특징으로 하는 도막 부착력이 우수한 열간 성형 부재. - 제1항에 있어서,
상기 확산층의 두께는 5 내지 16μm이고, 상기 알루미늄 도금층 총 두께는 20 내지 60μm인 것을 특징으로 하는 도막 부착력이 우수한 열간 성형 부재. - 제1항에 있어서,
상기 알루미늄 도금층의 화학 성분 중량백분율은 Si 4 내지 14%, Fe 0 내지 4%, Mg 0 내지 10%, Zn 0 내지 20%이고, 나머지는 Al 및 기타 불가피한 불순물인 것을 특징으로 하는 도막 부착력이 우수한 열간 성형 부재. - 제4항에 있어서,
상기 알루미늄 도금층의 화학 성분 중량백분율은 Si 4 내지 14%, Fe 2 내지 4%, Mg 0 내지 10%, Zn 0 내지 20%이고, 나머지는 Al 및 기타 불가피한 불순물인 것을 특징으로 하는 도막 부착력이 우수한 열간 성형 부재. - 제1항에 있어서,
상기 알루미늄 도금층의 중량 평균값은 단면당 20 내지 120g/m2인 것을 특징으로 하는 도막 부착력이 우수한 열간 성형 부재. - 제6항에 있어서,
상기 알루미늄 도금층의 중량 평균값은 단면당 30 내지 100g/m2인 것을 특징으로 하는 도막 부착력이 우수한 열간 성형 부재. - 제1항에 있어서,
상기 기재층의 화학 성분 질량백분율은,
C 0.01 내지 0.8%, Si 0.05 내지 1.0%, Mn 0.1 내지 5%, P≤0.3%, S≤0.1%, Al≤0.3%, Ti≤0.5%, B 0.0005 내지 0.1%, Cr 0.01 내지 3%, Nb≤0.5%, V≤0.5%이고, 나머지는 Fe 및 기타 불가피한 불순물인 것을 특징으로 하는 도막 부착력이 우수한 열간 성형 부재. - 제8항에 있어서,
상기 기재층의 각 화학 원소 질량백분율은,
C 0.05 내지 0.6%,
Si 0.07 내지 0.8%,
Mn 0.3 내지 4%,
P≤0.2%,
S≤0.08%,
Al≤0.2%,
Ti≤0.4%,
B 0.0005 내지 0.08%,
Cr 0.01 내지 2%,
Nb≤0.3% 및
V≤0.3% 중 적어도 하나를 더 충족하는 것을 특징으로 하는 도막 부착력이 우수한 열간 성형 부재. - 제8항에 있어서,
상기 기재층의 각 화학 원소 질량백분율은,
C 0.15 내지 0.5%,
Si 0.1 내지 0.5%,
Mn 0.5 내지 3%,
P≤0.1%,
S≤0.05%,
Al≤0.1%,
Ti≤0.2% 및
Cr 0.01 내지 1% 중 적어도 하나를 더 충족하는 것을 특징으로 하는 도막 부착력이 우수한 열간 성형 부재. - 제1항에 있어서,
도막 부착력이 우수한 열간 성형 부재의 항복강도는 400 내지 1400MPa이고, 인장강도는 500 내지 2100MPa이고, 연신율은 ≥4%인 것을 특징으로 하는 도막 부착력이 우수한 열간 성형 부재. - 제1항에 있어서,
상기 도막 부착력이 우수한 열간 성형 부재의 표면은 Fe2Al5 및 FeAl 합금을 함유하는 것을 특징으로 하는 도막 부착력이 우수한 열간 성형 부재. - 제1항에 있어서,
상기 도막 부착력이 우수한 열간 성형 부재의 표면은 Fe2Al5, FeAl 합금, 규소의 산화물, 알루미늄의 산화물 및 철의 산화물을 함유하는 것을 특징으로 하는 도막 부착력이 우수한 열간 성형 부재. - 제10항에 있어서,
상기 도막 부착력이 우수한 열간 성형 부재의 기재층의 미세조직 중 마르텐사이트의 체적백분율은 ≥95%인 것을 특징으로 하는 도막 부착력이 우수한 열간 성형 부재. - 제1항 내지 제14항 중 어느 한 항에 따른 도막 부착력이 우수한 열간 성형 부재의 제조 방법에 있어서,
(1) 기재를 알루미늄 도금액에 침지시켜 표면에 알루미늄 도금층이 있는 판재를 획득하는 단계;
(2) 조질 압연 단계 - 거칠기 Ra가 0.5 내지 3.0μm인 조질 압연 롤러를 채택해 조질 압연을 수행하며, 조질 압연율은 ≤2.0%로 제어하고, 상기 판재 표면 열복사 계수는 0.1 내지 0.8이고, 판재 표면 거칠기 Ra는 0.3 내지 2.0μm이고, 판재 표면 거칠기 피크 카운트 Rpc는 30 내지 150임 - ;
(3) 블랭킹 단계 - 판재를 부재에 필요한 형상의 블랭크로 펀칭 또는 절단함 - ;
(4) 열처리 단계 - 블랭크를 가열로에 넣고 가열 및 보온하며 가열로 온도는 880 내지 960℃이고, 가열로 내의 기체 분위기는 공기 또는 질소를 채택하고, 가열로에서 블랭크의 체류 시간은 2.5 내지 10min임 - ; 및
(5) 이송 및 핫 스탬핑 단계 - 뜨거운 블랭크를 몰드에 신속하게 이송하여 냉각 스탬핑 성형을 수행하여 상기 열간 성형 부재를 형성함 - 를 포함하는 것을 특징으로 하는 제조 방법. - 제15항에 있어서,
상기 단계 (1)에 있어서, 알루미늄 도금액의 화학 성분 질량백분율 함량은 Si 5 내지 11%, Fe 2 내지 4%, Zn 0 내지 15%, Mg 0 내지 8%이고, 나머지는 Al 및 기타 불가피한 불순물인 것을 특징으로 하는 제조 방법. - 제16항에 있어서,
알루미늄 도금액의 화학 성분 질량백분율 함량은 Si 8 내지 11%, Fe 2 내지 4%, Zn 0 내지 11%, Mg 0 내지 8%이고, 나머지는 Al 및 기타 불가피한 불순물인 것을 특징으로 하는 제조 방법. - 제15항에 있어서,
상기 단계 (4)에 있어서, 블랭크 가열의 승온 과정에서 400 내지 600℃까지 승온하는 범위 내에서 가열 속도는 10℃/s를 초과하지 않는 것을 특징으로 하는 제조 방법. - 제15항에 있어서,
상기 단계 (5)에 있어서, 블랭크는 20s 이내에 몰드로 이송되는 것을 특징으로 하는 제조 방법. - 제15항에 있어서,
상기 단계 (5)의 핫 스탬핑 과정에 있어서, 상기 몰드는 닫힌 후 계속해서 압력을 유지하며 4 내지 20s 동안 담금질을 수행하며, 블랭크 표면에 인가되는 유지 압력의 압력 강도는 8 내지 20MPa인 것을 특징으로 하는 제조 방법. - 제15항에 있어서,
상기 단계 (5)에 있어서, 상기 몰드의 재질은 700℃일 때의 열확산 계수가 3.8 내지 7mm2/s인 조건을 충족하는 것을 특징으로 하는 제조 방법. - 제15항에 있어서,
상기 단계 (5)에 있어서, 스탬핑 수행 시 몰드의 닫힘 속도는 30 내지 150mm/s인 것을 특징으로 하는 제조 방법. - 제15항에 있어서,
상기 단계 (5)에 있어서, 블랭크를 30 내지 150℃/s의 냉각 속도로 50 내지 200℃까지 냉각하는 것을 특징으로 하는 제조 방법.
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| CN108588612B (zh) | 2018-04-28 | 2019-09-20 | 育材堂(苏州)材料科技有限公司 | 热冲压成形构件、热冲压成形用预涂镀钢板及热冲压成形工艺 |
| KR20200076467A (ko) * | 2018-12-19 | 2020-06-29 | 주식회사 포스코 | 표면외관 및 도장선영성이 우수한 용융알루미늄도금강판용 조질압연 롤 및 이를 이용한 용융알루미늄도금강판의 제조방법과 용융알루미늄도금강판 |
| CN110117167A (zh) * | 2019-04-30 | 2019-08-13 | 马鞍山钢铁股份有限公司 | 一种具有光催化活性及优异耐高温性能的镀铝钢板及其制造方法 |
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2019
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2020
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015098653A1 (ja) | 2013-12-25 | 2015-07-02 | 新日鐵住金株式会社 | 自動車部品及び自動車部品の製造方法 |
| CN106466697A (zh) | 2016-08-12 | 2017-03-01 | 宝山钢铁股份有限公司 | 一种带铝或者铝合金镀层的钢制热冲压产品及其制造方法 |
| CN109518114A (zh) | 2018-08-08 | 2019-03-26 | 宝山钢铁股份有限公司 | 带铝硅合金镀层的热冲压部件的制造方法及热冲压部件 |
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| US20230002843A1 (en) | 2023-01-05 |
| ZA202205445B (en) | 2023-01-25 |
| BR112022009756A2 (pt) | 2022-08-09 |
| CN112877592A (zh) | 2021-06-01 |
| TW202120697A (zh) | 2021-06-01 |
| AU2020389982A1 (en) | 2022-06-30 |
| ES3038729T3 (en) | 2025-10-15 |
| TWI780518B (zh) | 2022-10-11 |
| KR20220106776A (ko) | 2022-07-29 |
| MX2022006471A (es) | 2022-09-09 |
| JP2023503151A (ja) | 2023-01-26 |
| WO2021103805A1 (zh) | 2021-06-03 |
| FI4067530T3 (fi) | 2025-09-24 |
| EP4067530B1 (en) | 2025-08-13 |
| JP7326612B2 (ja) | 2023-08-15 |
| EP4067530A1 (en) | 2022-10-05 |
| CA3159490A1 (en) | 2021-06-03 |
| CN112877592B (zh) | 2022-06-28 |
| EP4067530A4 (en) | 2022-11-02 |
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