JP2021508771A - 加工後耐食性に優れた亜鉛合金めっき鋼材及びその製造方法 - Google Patents
加工後耐食性に優れた亜鉛合金めっき鋼材及びその製造方法 Download PDFInfo
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- JP2021508771A JP2021508771A JP2020534879A JP2020534879A JP2021508771A JP 2021508771 A JP2021508771 A JP 2021508771A JP 2020534879 A JP2020534879 A JP 2020534879A JP 2020534879 A JP2020534879 A JP 2020534879A JP 2021508771 A JP2021508771 A JP 2021508771A
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- steel material
- zinc alloy
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- 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
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
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- B—PERFORMING OPERATIONS; TRANSPORTING
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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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- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
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- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/043—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
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- C—CHEMISTRY; METALLURGY
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- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/76—Adjusting the composition of the atmosphere
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- C—CHEMISTRY; METALLURGY
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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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- C21D8/0226—Hot rolling
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- C—CHEMISTRY; METALLURGY
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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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Abstract
Description
下記表1に示された平均結晶粒サイズを有する熱延鋼板を設けた後、冷間圧延して下記表1の素地鋼板を設けた。上記冷間圧延時の鋼板の張力や圧下率などを調整して、下記表1に示した表面粗さ(Ra)及び急峻度を有する素地鋼板を製造した。上記素地鋼板は、その組成が、重量%で、C:0.03%、Si:0.02%、Mn:0.15%、P:0.01%、S:0.01%、残りFe及び不可避不純物を含む。
Claims (10)
- 素地鉄と、
前記素地鉄上に形成された亜鉛合金めっき層と、
前記素地鉄と亜鉛合金めっき層の間に形成された抑制層(Inhibition layer)と、を含み、
前記亜鉛合金めっき層は、重量%で、Mg:0.5〜3.5%、Al:0.5〜11.0%、Si:10〜350ppm、残部Zn及び不可避不純物を含み、
前記抑制層内にはSi濃化層を含む、加工後耐食性に優れた亜鉛合金めっき鋼材。 - 前記亜鉛合金めっき層と素地鉄の間に、100μm当たり直径1000nmを超えるMg2Si合金相の個数が5個以下である、請求項1に記載の加工後耐食性に優れた亜鉛合金めっき鋼材。
- 前記亜鉛合金めっき層と素地鉄の間に、100μm当たり直径500nmを超えるMg2Si合金相の個数が5個以下である、請求項1に記載の加工後耐食性に優れた亜鉛合金めっき鋼材。
- 結晶粒サイズが1〜100μmである熱延鋼材を設ける段階と、
前記熱延鋼材を冷間圧延して、表面粗さ0.2〜1.0μm、急峻度0.2〜1.2を有する冷延鋼材を製造する段階と、
前記冷延鋼材である素地鉄を、重量%で、Mg:0.5〜3.5%、Al:0.5〜11.0%、Si:10〜350ppm、残部Zn及び不可避不純物を含むめっき浴に浸漬してめっきする段階と、
前記めっきされた溶融亜鉛合金めっき鋼材をワイピングし、冷却する段階と、を含む、加工後耐食性に優れた亜鉛合金めっき鋼材の製造方法。 - 前記めっき浴は10〜80ppmのFeをさらに含む、請求項4に記載の加工後耐食性に優れた亜鉛合金めっき鋼材の製造方法。
- 前記めっき浴の温度は、めっき浴の融点の+10〜+90℃である、請求項4に記載の加工後耐食性に優れた亜鉛合金めっき鋼材の製造方法。
- 前記めっき時における素地鉄の温度はめっき浴の温度の+5〜+30℃である、請求項4に記載の加工後耐食性に優れた亜鉛合金めっき鋼材の製造方法。
- 前記冷延鋼材を600〜850℃の温度で焼鈍熱処理する段階をさらに含む、請求項4に記載の加工後耐食性に優れた亜鉛合金めっき鋼材の製造方法。
- 前記焼鈍熱処理における炉内雰囲気は、水素(H2)1〜10体積%、残りは窒素(N2)であるガスを用いる、請求項8に記載の加工後耐食性に優れた亜鉛合金めっき鋼材の製造方法。
- 前記焼鈍熱処理の露点温度は−60〜−10℃である、請求項8に記載の加工後耐食性に優れた亜鉛合金めっき鋼材の製造方法。
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| WO2024247426A1 (ja) | 2023-05-31 | 2024-12-05 | Jfeスチール株式会社 | Zn-Al-Mg-Si系めっき鋼板 |
| KR20250168361A (ko) | 2023-05-31 | 2025-12-02 | 제이에프이 스틸 가부시키가이샤 | Zn-Al-Mg-Si 계 도금 강판 |
| KR20250168362A (ko) | 2023-05-31 | 2025-12-02 | 제이에프이 스틸 가부시키가이샤 | Zn-Al-Mg-Si 계 도금 강판 |
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| WO2024247424A1 (ja) | 2023-05-31 | 2024-12-05 | Jfeスチール株式会社 | Zn-Al-Mg-Si系めっき鋼板 |
| WO2024247426A1 (ja) | 2023-05-31 | 2024-12-05 | Jfeスチール株式会社 | Zn-Al-Mg-Si系めっき鋼板 |
| KR20250168361A (ko) | 2023-05-31 | 2025-12-02 | 제이에프이 스틸 가부시키가이샤 | Zn-Al-Mg-Si 계 도금 강판 |
| KR20250168362A (ko) | 2023-05-31 | 2025-12-02 | 제이에프이 스틸 가부시키가이샤 | Zn-Al-Mg-Si 계 도금 강판 |
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| JP2023025076A (ja) | 2023-02-21 |
| EP3733918A4 (en) | 2021-03-10 |
| JP7244722B2 (ja) | 2023-03-23 |
| CN111527232A (zh) | 2020-08-11 |
| MX2020006698A (es) | 2020-08-20 |
| KR102031465B1 (ko) | 2019-10-11 |
| EP3733918B1 (en) | 2022-08-31 |
| EP3733918A1 (en) | 2020-11-04 |
| US20210002751A1 (en) | 2021-01-07 |
| JP7798753B2 (ja) | 2026-01-14 |
| WO2019132336A1 (ko) | 2019-07-04 |
| KR20190078434A (ko) | 2019-07-04 |
| US11566314B2 (en) | 2023-01-31 |
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