KR20200027578A - 알루미늄계 코팅 및 아연 코팅으로 코팅된 시트로부터 인산염처리 가능한 부품을 생산하는 방법 - Google Patents
알루미늄계 코팅 및 아연 코팅으로 코팅된 시트로부터 인산염처리 가능한 부품을 생산하는 방법 Download PDFInfo
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Abstract
Description
도 2 는 본 발명의 다른 실시형태에 따른 코팅된 강 시트의 개략도이다.
도 1 및 도 2 에 있어서, 도시된 층들의 두께는 단지 설명의 목적으로 제공되며, 다양한 층들의 실제 스케일 표현으로 간주될 수 없다.
도 3 및 도 4 는 는 일 측에 두게 1 ㎛, 2 ㎛ 및 3 ㎛ 의 전기도금에 의해 성막된 제 2 아연 코팅을 가지며 두께 25 ㎛ 의 제 1 알루미늄계 코팅을 구비하는 강 시트로부터의 경화된 부품의 실제 크기를 도시한다.
도 5 는 표준 VDA 231-102 에 대한 부식 사이클을 보여준다.
Claims (20)
- 알루미늄계 코팅으로 코팅된 프레스 경화용 강 시트로서,
1.1 ㎛ 이하의 두께를 갖는 제 2 아연 코팅을 더 포함하고, 상기 제 2 아연 코팅은 Zn 만으로 이루어지고,
상기 알루미늄계 코팅은 3 % 이하의 철 및 9 % 내지 12 % 의 규소를 포함하고, 잔부가 알루미늄인 것을 특징으로 하는, 프레스 경화용 강 시트. - 제 1 항에 있어서,
상기 아연 코팅의 두께는 1.0 ㎛ 이하인 것을 특징으로 하는, 프레스 경화용 강 시트. - 제 2 항에 있어서,
상기 아연 코팅의 두께는 0.7 ㎛ 이하인 것을 특징으로 하는, 프레스 경화용 강 시트. - 제 1 항에 있어서,
상기 강 시트는 적어도 일 측에서 두께 5 ㎛ 내지 50 ㎛ 의 알루미늄계 코팅으로 코팅되는 것을 특징으로 하는, 프레스 경화용 강 시트. - 제 1 항에 있어서,
상기 알루미늄계 코팅은 상기 아연 코팅과 직접 접촉하는 것을 특징으로 하는, 프레스 경화용 강 시트. - 제 1 항에 있어서,
상기 강 시트는 적어도 일 측에서 두께 10 ㎛ 내지 35 ㎛ 의 알루미늄계 코팅으로 코팅되는 것을 특징으로 하는, 프레스 경화용 강 시트. - 제 1 항 내지 제 6 항 중 어느 한 항에 있어서,
상기 강 시트는 다음과 같은 중량 조성:
0.20% ≤ C ≤ 0.25%
0.15% ≤ Si ≤ 0.35%
1.10% ≤ Mn ≤ 1.40%
0% ≤ Cr ≤ 0.30%
0% ≤ Mo ≤ 0.35%
0% ≤ P ≤ 0.025%
0% ≤ S ≤ 0.005%
0.020% ≤ Ti ≤ 0.060%
0.020% ≤ Al ≤ 0.060%
0.002% ≤ B ≤ 0.004%
를 갖고, 상기 조성의 잔부가 철 및 프로세스로부터 유래하는 불가피한 불순물인 것을 특징으로 하는, 프레스 경화용 강 시트. - 제 1 항 내지 제 6 항 중 어느 한 항에 있어서,
상기 강 시트의 중량 조성은
0.24% ≤ C ≤ 0.38%
0.40% ≤ Mn ≤ 3%
0.10% ≤ Si ≤ 0.70%
0.015% ≤ Al ≤ 0.070%
0% ≤ Cr ≤ 2%
0.25% ≤ Ni ≤ 2%
0.020% ≤ Ti ≤ 0.10%
0% ≤ Nb ≤ 0.060%
0.0005% ≤ B ≤ 0.0040%
0.003% ≤ N ≤ 0.010%
0.0001% ≤ S ≤ 0.005%
0.0001% ≤ P ≤0.025%
이고,
티타늄 및 질소의 양이
Ti/N > 3.42
를 만족시키고,
탄소, 망간, 크롬 및 규소의 양이
을 만족시키고,
상기 조성은 선택적으로 다음의 원소:
0.05% ≤ Mo ≤ 0.65%
0.001% ≤ W ≤ 0.30%
0.0005% ≤ Ca ≤ 0.005%
중 하나 이상을 포함하고,
상기 조성의 잔부가 철 및 프로세스로부터 유래하는 불가피한 불순물인 것을 특징으로 하는, 프레스 경화용 강 시트. - 제 1 항에 따른 강 시트의 제조 방법으로서,
아연 코팅은 시멘테이션, 전기도금, 또는 진공 하에서의 음속 제트 증착 (sonic jet vapor deposition) 에 의해 행해지는, 강 시트의 제조 방법. - 제 9 항에 있어서,
상기 아연 코팅은 시멘테이션 또는 전기도금에 의해 성막되고, 상기 코팅은 상기 알루미늄계 코팅에 직접 성막되는 것을 특징으로 하는, 강 시트의 제조 방법. - 제 10 항에 있어서,
시멘테이션에 의해 성막된 상기 아연 코팅은 침지 (immersion) 또는 분무 (spraying) 에 의해 행해지는 것을 특징으로 하는, 강 시트의 제조 방법. - 제 10 항에 있어서,
상기 코팅이 음속 제트 증기에 의해 진공 하에서 성막되는 때, 상기 알루미늄계 코팅과 상기 아연 코팅 사이에 스테인리스강의 얇은 층이 성막되는 것을 특징으로 하는, 강 시트의 제조 방법. - 인산염처리 가능한 (phosphatable) 코팅으로 코팅된 프레스 경화된 부품의 제조 방법으로서, 다음의 순차적인 단계들:
A) 프레스 경화를 위해, 제 1 항에 따른, 또는 제 9 항에 따른 방법에 의해 제조된 강 시트를 제공하는 단계,
B) 단계 A) 에서 획득된 시트를 절단하여 블랭크를 획득하는 단계, 그 다음에,
C) 상기 블랭크를 840℃ 내지 950℃ 의 온도 T1 에서 가열하여, 강 중에 전적으로 오스테나이트 조직을 획득하는 단계, 그 다음에,
D) 상기 블랭크를 프레스로 이송하는 단계,
E) 상기 블랭크를 열간 프레싱하여 부품을 획득하는 단계,
F) 단계 E) 에서 획득된 부품을 냉각시켜, 적어도 75 % 등축정 철, 5 % 이상 20 % 이하의 양의 마텐자이트, 10 % 이하의 양의 베이나이트로 구성된 강 중의 마텐자이트 또는 마텐자이트-베이나이트 조직을 획득하는 단계
를 포함하는, 프레스 경화된 부품의 제조 방법. - 제 13 항에 있어서,
단계 C) 는 불활성 분위기 또는 공기를 포함하는 분위기에서 3 내지 12 분의 시간 t1 동안 실시되는 것을 특징으로 하는, 프레스 경화된 부품의 제조 방법. - 제 13 항에 있어서,
단계 E) 동안에, 열간 프레싱은 600 ℃ 내지 830 ℃ 의 온도 T2 에서 행해지는 것을 특징으로 하는, 프레스 경화된 부품의 제조 방법. - 제 13 항에 따른 방법에 의해 획득될 수 있는 경화된 부품으로서,
ZnO 층을 포함하고,
추가적인 인산염처리 단계 G) 후에 획득되는 상기 ZnO 층 상의 인산염 결정층 (phosphate crystal layer) 을 더 포함하는, 경화된 부품. - 제 16 항에 있어서,
상기 부품의 표면에서의 인산염 결정 커버리지 정도가 90 % 이상인 것을 특징으로 하는, 경화된 부품. - 제 17 항에 있어서,
상기 부품의 표면에서의 인산염 결정 커버리지 정도가 99 % 이상인 것을 특징으로 하는, 경화된 부품. - 제 16 항에 있어서,
상기 인산염 결정층 상에 전기영동 층 (cataphoresis layer) 을 더 포함하는 것을 특징으로 하는, 경화된 부품. - 제 16 항에 있어서,
상기 부품은 자동차 부품의 제조를 위해 사용되는 것을 특징으로 하는, 경화된 부품.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/IB2015/000194 WO2016132165A1 (fr) | 2015-02-19 | 2015-02-19 | Procede de fabrication d'une piece phosphatable a partir d'une tole revetue d'un revetement a base d'aluminium et d'un revetement de zinc |
| IBPCT/IB2015/000194 | 2015-02-19 | ||
| PCT/IB2016/000037 WO2016132194A1 (fr) | 2015-02-19 | 2016-01-22 | Procede de fabrication d'une piece phosphatable a partir d'une tôle revêtue d'un revêtement a base d'aluminium et d'un revêtement de zinc |
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| KR1020207006461A Active KR102203043B1 (ko) | 2015-02-19 | 2016-01-22 | 알루미늄계 코팅 및 아연 코팅으로 코팅된 시트로부터 인산염처리 가능한 부품을 생산하는 방법 |
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| PL3259380T3 (pl) | 2019-04-30 |
| WO2016132165A1 (fr) | 2016-08-25 |
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| BR112017016132B1 (pt) | 2021-06-29 |
| RU2686164C2 (ru) | 2019-04-24 |
| JP6511155B2 (ja) | 2019-05-15 |
| TR201900880T4 (tr) | 2019-02-21 |
| CN107250414B (zh) | 2019-04-02 |
| KR102203043B1 (ko) | 2021-01-14 |
| CA2977173A1 (fr) | 2016-08-25 |
| ZA201704918B (en) | 2019-05-29 |
| UA117994C2 (uk) | 2018-10-25 |
| BR112017016132A2 (pt) | 2018-04-17 |
| EP3259380A1 (fr) | 2017-12-27 |
| RU2017132500A3 (ko) | 2019-03-19 |
| MX390424B (es) | 2025-03-19 |
| HUE041821T2 (hu) | 2019-05-28 |
| CN107250414A (zh) | 2017-10-13 |
| US12571086B2 (en) | 2026-03-10 |
| CA2977173C (fr) | 2019-07-02 |
| EP3259380B1 (fr) | 2018-10-24 |
| RU2017132500A (ru) | 2019-03-19 |
| ES2707368T3 (es) | 2019-04-03 |
| US20180044774A1 (en) | 2018-02-15 |
| WO2016132194A1 (fr) | 2016-08-25 |
| KR20170116102A (ko) | 2017-10-18 |
| MX2017010574A (es) | 2017-11-16 |
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