JP2011509341A - 加工性に優れた高強度冷延鋼板、亜鉛メッキ鋼板及びその製造方法 - Google Patents
加工性に優れた高強度冷延鋼板、亜鉛メッキ鋼板及びその製造方法 Download PDFInfo
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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
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0421—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the working steps
- C21D8/0436—Cold rolling
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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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- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
- C21D8/0447—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
- C21D8/0473—Final recrystallisation annealing
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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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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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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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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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/001—Austenite
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/002—Bainite
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- 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
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
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Abstract
Description
下記表1のように造成される鋼スラブを1200℃の温度範囲で加熱して抽出した後、上記の条件のように処理した。そして、高強度化上の影響を評価するために、表2の成分系で窒素添加の効果を導出した。
Claims (15)
- 重量%で、C:0.04〜0.25%、N:70ppm〜300ppm、N-14/27Al:70ppm以上、Mn:0.2〜3.0%、Si:0.5〜2.0%、P:0.01〜0.1%、Al:0.005%以下、Sb:0.001〜0.05%、及びS:0.02%以下、並びに残部Fe及びその他不可避の不純物を含むことを特徴とする、冷延鋼板。
- 前記冷延鋼板は、Co:0.01〜1.0%、Mo:0.005〜0.05%、Ti:0.001〜0.1%、Nb:0.001〜0.1%、V:0.001〜0.1%、及びCa:0.0001〜0.03%からなる群より選択される1種または2種以上の成分をさらに含むことを特徴とする、請求項1に記載の冷延鋼板。
- 前記亜鉛メッキ鋼板の微細組織の分率はフェライトが70%以上、残りの組織がベイナイトとオーステナイトの複合組織で構成されることを特徴とする、請求項1または2に記載の冷延鋼板。
- 重量%で、C:0.04〜0.25%、N:0.007〜0.03%、Mn:0.2〜3.0%、Si:0.5〜2.0%、P:0.01〜0.1%、Al:0.005%以下、Sb:0.001〜0.05%、及びS:0.02%以下、並びに残部Fe及びその他不可避の不純物を含む鋼スラブを、1100〜1250℃で再加熱する段階と、
Ar3〜950℃で熱間仕上圧延を終了する段階と、
450〜700℃の温度で巻取する段階と、
酸洗段階及び目標厚さで冷間圧延する段階と、
750〜830℃の温度で焼鈍する段階
とを含むことを特徴とする、冷延鋼板の製造方法。 - 前記鋼スラブは、Co:0.01〜1.0%、Mo:0.005〜0.05%、Ti:0.001〜0.1%、Nb:0.001〜0.1%、V:0.001〜0.1%、及びCa:0.0001〜0.03%からなる群より選択される1種または2種以上の成分をさらに含むことを特徴とする、請求項4に記載の冷延鋼板の製造方法。
- 前記焼鈍段階は、下記式の関係を満足する還元雰囲気でなされることを特徴とする、請求項4に記載の冷延鋼板の製造方法。
- 重量%で、C:0.04〜0.25%、N:70ppm〜300ppm、N-14/27Al:70ppm以上、Mn:0.2〜3.0%、Si:0.5〜2.0%、P:0.01〜0.1%、Al:0.005%以下、Sb:0.001〜0.05%、及びS:0.02%以下、並びに残部Fe及びその他不可避の不純物を含む鋼板に亜鉛メッキ処理することを特徴とする、亜鉛メッキ鋼板。
- 前記亜鉛メッキ鋼板は、Co:0.01〜1.0%、Mo:0.005〜0.05%、Ti:0.001〜0.1%、Nb:0.001〜0.1%、V:0.001〜0.1%及びCa:0.0001〜0.03%からなるグループから選択された1種または2種以上の成分を追加的に含むことを特徴とする、請求項7に記載の亜鉛メッキ鋼板。
- 前記亜鉛メッキ鋼板の微細組織の分率はフェライト70%以上、残りの組織がベイナイトとオーステナイトの複合組織で構成されることを特徴とする、請求項7または8に記載の亜鉛メッキ鋼板。
- 前記亜鉛メッキ処理は溶融亜鉛メッキ処理であることを特徴とする、請求項7または8に記載の亜鉛メッキ鋼板。
- 重量%で、C:0.04〜0.25%、N:0.007〜0.03%、Mn:0.2〜3.0%、Si:0.5〜2.0%、P:0.01〜0.1%、Al:0.005%以下、Sb:0.001〜0.05%、及びS:0.02%以下、並びに残部Fe及びその他不可避の不純物を含む鋼スラブを
1100〜1250℃で再加熱する段階と、
Ar3〜950℃で熱間仕上圧延を終了する段階と、
450〜700℃の温度で巻取する段階と、
酸洗段階及び目標厚さで冷間圧延する段階と、
750〜830℃の温度で焼鈍する段階と、
焼鈍された鋼板を、650〜750℃の温度領域まで1〜10℃/秒で冷却し、更に、300〜450℃の温度範囲で急冷する段階と、
冷却された鋼板を亜鉛メッキ化する段階、及び合金化する段階
とを含むことを特徴とする、亜鉛メッキ鋼板の製造方法。 - 前記鋼スラブは、Co:0.01〜1.0%、Mo:0.005〜0.05%、Ti:0.001〜0.1%、Nb:0.001〜0.1%、V:0.001〜0.1%、及びCa:0.0001〜0.03%からなる群より選択された1種または2種以上の成分をさらに含むことを特徴とする、請求項11に記載の亜鉛メッキ鋼板の製造方法。
- 前記焼鈍段階は、下記式の関係を満足する還元雰囲気でなされることを特徴とする、請求項11に記載の亜鉛メッキ鋼板の製造方法。
- 前記亜鉛メッキ化段階は、560℃以下で行われることを特徴とする、請求項11に記載の亜鉛メッキ鋼板の製造方法。
- 焼鈍炉の入側で脱脂処理をした後、ブラッシング(Brushing)処理段階、80〜85%の塩酸溶液での酸洗処理段階、及び4〜12%濃度のS−被覆(Coating処理段階からなるグループから選択される1種または2種以上の焼鈍前処理段階をさらに含むことを特徴とする、請求項11に記載の亜鉛メッキ鋼板の製造方法。
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KR10-2007-0134236 | 2007-12-20 | ||
KR1020070134236A KR100957981B1 (ko) | 2007-12-20 | 2007-12-20 | 가공성이 우수한 고강도 냉연강판, 용융도금 강판 및 그제조방법 |
PCT/KR2008/004642 WO2009082078A1 (en) | 2007-12-20 | 2008-08-08 | High strength cold rolled steel plate and galvanized steel plate with superior workability and method for manufacturing thereof |
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JP2011509341A true JP2011509341A (ja) | 2011-03-24 |
JP5564432B2 JP5564432B2 (ja) | 2014-07-30 |
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WO (1) | WO2009082078A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2013024861A1 (ja) * | 2011-08-17 | 2013-02-21 | 株式会社神戸製鋼所 | 室温および温間での成形性に優れた高強度鋼板およびその温間成形方法 |
JP2015113505A (ja) * | 2013-12-12 | 2015-06-22 | Jfeスチール株式会社 | 化成処理性に優れた高加工性高強度冷延鋼板およびその製造方法 |
US10406780B2 (en) | 2013-04-26 | 2019-09-10 | Kobe Steel, Ltd. | Hot-dip galvannealed steel sheet for hot stamping and method for manufacturing steel part |
Families Citing this family (10)
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JP5862002B2 (ja) * | 2010-09-30 | 2016-02-16 | Jfeスチール株式会社 | 疲労特性に優れた高強度溶融亜鉛めっき鋼板およびその製造方法 |
KR20120127095A (ko) * | 2011-05-13 | 2012-11-21 | 주식회사 포스코 | 표면특성이 우수한 고강도 고인성 선재 및 그 제조방법 |
KR101647224B1 (ko) | 2014-12-23 | 2016-08-10 | 주식회사 포스코 | 표면품질, 도금밀착성 및 성형성이 우수한 고강도 용융아연도금강판 및 그 제조방법 |
CN104862631A (zh) * | 2015-05-08 | 2015-08-26 | 青岛锻艺金属有限公司 | 一种铁艺制品表面镀锌工艺 |
JP6249113B2 (ja) * | 2016-01-27 | 2017-12-20 | Jfeスチール株式会社 | 高降伏比型高強度亜鉛めっき鋼板及びその製造方法 |
KR102031452B1 (ko) * | 2017-12-24 | 2019-10-11 | 주식회사 포스코 | 소부경화성 및 도금밀착성이 우수한 냉연강판, 용융 아연계 도금강판 및 그 제조방법 |
KR102648242B1 (ko) * | 2018-12-19 | 2024-03-18 | 주식회사 포스코 | 전기 저항 점용접성이 우수한 고강도 아연도금강판 및 그 제조방법 |
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CN111560565B (zh) * | 2020-06-29 | 2021-08-03 | 江苏九天光电科技有限公司 | 一种测量器具用优特钢薄钢带的生产方法 |
CN113817961B (zh) * | 2021-08-26 | 2022-06-21 | 马鞍山钢铁股份有限公司 | 彩涂基料用热浸镀锌钢板及其制造方法 |
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JP2005307339A (ja) * | 2004-03-22 | 2005-11-04 | Jfe Steel Kk | 強度−延性バランスに優れた高張力熱延鋼板およびその製造方法 |
JP2005290477A (ja) * | 2004-03-31 | 2005-10-20 | Jfe Steel Kk | 高張力鋼板の歪時効処理方法および高強度構造部材の製造方法 |
WO2007067014A1 (en) * | 2005-12-09 | 2007-06-14 | Posco | Tole d'acier laminee a froid de haute resistance possedant une excellente propriete de formabilite et de revetement, tole d'acier plaquee de metal a base de zinc fabriquee a partir de cette tole et procece de fabrication de celle-ci |
WO2007075008A1 (en) * | 2005-12-26 | 2007-07-05 | Posco | Method for manufacturing high strength steel strips with superior formability and excellent coatability |
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WO2013024861A1 (ja) * | 2011-08-17 | 2013-02-21 | 株式会社神戸製鋼所 | 室温および温間での成形性に優れた高強度鋼板およびその温間成形方法 |
JP2013040382A (ja) * | 2011-08-17 | 2013-02-28 | Kobe Steel Ltd | 室温および温間での成形性に優れた高強度鋼板およびその温間成形方法 |
US9657381B2 (en) | 2011-08-17 | 2017-05-23 | Kobe Steel, Ltd. | High-strength steel sheet having excellent room-temperature formability and warm formability, and warm forming method thereof |
US10406780B2 (en) | 2013-04-26 | 2019-09-10 | Kobe Steel, Ltd. | Hot-dip galvannealed steel sheet for hot stamping and method for manufacturing steel part |
JP2015113505A (ja) * | 2013-12-12 | 2015-06-22 | Jfeスチール株式会社 | 化成処理性に優れた高加工性高強度冷延鋼板およびその製造方法 |
Also Published As
Publication number | Publication date |
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KR20090066614A (ko) | 2009-06-24 |
CN101910441B (zh) | 2013-04-24 |
CN101910441A (zh) | 2010-12-08 |
WO2009082078A1 (en) | 2009-07-02 |
JP5564432B2 (ja) | 2014-07-30 |
KR100957981B1 (ko) | 2010-05-19 |
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