KR20150140346A - 합금화 용융 아연 도금 강판 및 그 제조 방법 - Google Patents
합금화 용융 아연 도금 강판 및 그 제조 방법 Download PDFInfo
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- KR20150140346A KR20150140346A KR1020157031805A KR20157031805A KR20150140346A KR 20150140346 A KR20150140346 A KR 20150140346A KR 1020157031805 A KR1020157031805 A KR 1020157031805A KR 20157031805 A KR20157031805 A KR 20157031805A KR 20150140346 A KR20150140346 A KR 20150140346A
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- South Korea
- Prior art keywords
- phase
- plating
- steel sheet
- temperature
- mass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
- B32B15/013—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of an iron alloy or steel, another layer being formed of a metal other than iron or aluminium
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- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
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- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
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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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Abstract
여기서, δ상/Γ상 접촉 계면 길이는 δ상과 Γ상이 접촉하고 있는 계면의 길이이고, Γ1상/Γ상 접촉 계면 길이는 Γ1상과 Γ상이 접촉하고 있는 계면의 길이이다.
Description
도 2는 온도 적분값(S)과 도금층의 Fe 농도(질량%)의 관계를 나타내는 도면이다.
도 3은 성형 높이(㎜)와 가공 후의 판 두께 감소율(%)의 관계를 나타내는 도면이다.
도 4는 판 두께 감소율(%)과 예비 도금량(g/㎡)의 관계에 있어서의 파우더링 평가 결과를 나타내는 도면이다.
도 5a는 예비 도금을 실시한 경우의 지철과 도금층의 계면 근방에 있어서의 도금층의 미세 조직의 형태를 도시하는 도면이다.
도 5b는 예비 도금을 실시하지 않은 경우의 지철과 도금의 계면 근방에 있어서의 도금층의 미세 조직의 형태를 도시하는 도면이다.
도 6은 예비 도금량(g/㎡)과 δ상 비율(%)의 관계를 나타내는 도면이다.
도 7은 예비 도금량(g/㎡)을 변화시킨 경우의 온도 적분값 S와 Γ상 중에 함유되는 예비 도금 금속의 농도의 관계를 나타내는 도면이다.
도 8은 Γ상 중의 예비 도금 금속 함유율과 δ상 비율의 관계를 나타내는 도면이다.
도 9는 예비 도금량(g/㎡)을 변화시킨 경우의 도금층에 함유되는 예비 도금 금속의 함유율과 ζ상의 두께의 관계를 나타내는 도면이다.
도 10은 Ni를 함유하는 경우와 함유하지 않는 경우의 Fe-Al-Zn계의 상태를 도시하는 도면이다.
도 11은 예비 도금량(g/㎡)과, 도금층에 있어서의 예비 도금 금속의 농도의 관계를 나타내는 도면이다.
도 12는 도금층에 있어서의 Fe 농도와, Γ상의 두께의 관계를 나타내는 도면이다.
도 13은 판 두께 감소율마다에서의 내파우더링성이 양호한 δ상 비율을 나타내는 도면이다.
Claims (2)
- 지철과,
Fe를 7.2 내지 10.6질량%, Al을 0.2 내지 0.4질량%, 및 Ni, Co, Cu 및 In으로 이루어지는 군에서 선택되는 1종 또는 2종 이상을 합계로 0.1질량% 이상 함유하고, 잔부가 Zn 및 불순물을 포함하는 도금층을 가지며,
상기 도금층은 상기 지철의 표면에 형성되고, 상기 도금층의 수직 단면에서, ζ상의 평균 두께가 0.2㎛ 이하이고, 상기 지철에 접하여 존재하는 Γ상의 평균 두께가 0.5㎛ 이하이며, 상기 Γ상 중에 있어서, 상기 Ni, Co, Cu 및 In으로 이루어지는 군에서 선택되는 1종 또는 2종 이상을 합계로 상기 Γ상 중에서의 비율로 0.5질량% 이상 함유하고, 상기 Γ상에 접하여 존재하는 상이 Γ1상과 δ상의 혼합상이며, 하기 식 (1)에서 정의하는 δ상 비율이 10% 이상인 것을 특징으로 하는, 합금화 용융 아연 도금 강판.
여기서, δ상/Γ상 접촉 계면 길이는 δ상과 Γ상이 접촉하고 있는 계면의 길이이고, Γ1상/Γ상 접촉 계면 길이는 Γ1상과 Γ상이 접촉하고 있는 계면의 길이임. - 판 두께 감소율(%)이 5% 이상인 프레스 가공을 받는 합금화 용융 아연 도금 강판을 제조하는 제조 방법이며,
하기 식 (2)에 따라, 상기 합금화 용융 아연 도금 강판의 프레스 가공 시의 판 두께 감소율(%)에 기초하여 필요 예비 도금량(g/㎡)을 산출하고, 지철에, Ni, Co, Cu 및 In으로 이루어지는 군에서 선택되는 1종 또는 2종 이상을 함유하는 예비 도금을 합계로, 상기 산출한 필요 예비 도금량(g/㎡) 이상 실시하고 난 후, Al을 0.1 내지 0.3질량% 함유하는 도금욕에 침지시켜 아연 도금을 실시하는 공정과,
이어서, 가열로 출측에서 최고 도달 온도에 도달한 후 보열로에서 서냉할 때, 하기 식 (3)에서 산출되는 온도 적분값 S를 300 이상 800 미만의 범위에서 조정하여 합금화 처리를 실시하는 공정을 갖는 것을 특징으로 하는, 합금화 용융 아연 도금 강판의 제조 방법.
여기서, T0: 420(℃),
T11: 가열로 출측의 강판 온도(℃),
T12: 보열로의 냉각대 입측의 강판 온도(℃),
T21: 냉각대 출측의 강판 온도(℃),
T22: 보열로 출측의 강판 온도(℃),
t1: T0으로부터 가열로 출측까지의 처리 시간(초),
t2: 가열로 출측으로부터 보열로의 냉각대 입측까지의 처리 시간(초),
Δt: 보열로의 냉각대 입측으로부터 냉각대 출측까지의 처리 시간(초),
t3: 보열로의 냉각대 출측으로부터 보열로 출측까지의 처리 시간(초),
t4: 급냉대 입측으로부터 T0까지의 처리 시간(초)
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KR20190111040A (ko) | 2017-02-20 | 2019-10-01 | 다우 실리콘즈 코포레이션 | 실온-경화성 실리콘 조성물 및 전기/전자 장치 |
KR20210005956A (ko) | 2018-06-06 | 2021-01-15 | 다우 실리콘즈 코포레이션 | 수분 경화성 유기폴리실록산 조성물 및 전기/전자 장치 |
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Publication number | Publication date |
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CN105209655B (zh) | 2017-12-29 |
US20160082701A1 (en) | 2016-03-24 |
TW201504473A (zh) | 2015-02-01 |
TWI502099B (zh) | 2015-10-01 |
US10040270B2 (en) | 2018-08-07 |
KR101727424B1 (ko) | 2017-04-14 |
MX2015014999A (es) | 2016-02-05 |
WO2014189063A1 (ja) | 2014-11-27 |
BR112015028001A2 (pt) | 2017-07-25 |
MX376674B (es) | 2025-03-07 |
JPWO2014189063A1 (ja) | 2017-02-23 |
CA2911442A1 (en) | 2014-11-27 |
JP6011724B2 (ja) | 2016-10-19 |
CA2911442C (en) | 2017-09-12 |
CN105209655A (zh) | 2015-12-30 |
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