JP2019504196A - 表面品質及びスポット溶接性に優れた高強度溶融亜鉛めっき鋼板及びその製造方法 - Google Patents
表面品質及びスポット溶接性に優れた高強度溶融亜鉛めっき鋼板及びその製造方法 Download PDFInfo
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- JP2019504196A JP2019504196A JP2018530902A JP2018530902A JP2019504196A JP 2019504196 A JP2019504196 A JP 2019504196A JP 2018530902 A JP2018530902 A JP 2018530902A JP 2018530902 A JP2018530902 A JP 2018530902A JP 2019504196 A JP2019504196 A JP 2019504196A
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- steel sheet
- less
- dip galvanized
- hot
- galvanized steel
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- C—CHEMISTRY; METALLURGY
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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
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0273—Final recrystallisation annealing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- 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
- 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- 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
- B32B15/04—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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- 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
- B32B15/04—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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- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
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Abstract
Description
上記素地鋼板は、重量%で、炭素(C):0.1〜0.3%、シリコン(Si):0.5〜2.5%、マンガン(Mn):2.0〜8.0%、可溶性アルミニウム(sol.Al):0.001〜0.5%、リン(P):0.04%以下(0%は除く)、硫黄(S):0.015%以下(0%は除く)、窒素(N):0.02%以下(0%は除く)、クロム(Cr):0.01〜0.7%、チタン(Ti):(48/14)×[N]〜0.1%、残部Fe及び不可避不純物を含み、
上記素地鋼板は、微細組織が、面積分率で、5〜30%のフェライト、5〜20%のオーステナイト、50〜80%のベイナイト及びマルテンサイト、並びに2%以下(0%を含む)の析出物を含み、上記表面から厚さ方向に2μm以内の微細組織が、面積分率で、50%以上のフェライト、2%以下(0%を含む)のオーステナイト、50%以下(0%を含む)のベイナイト及びマルテンサイト、並びに2%以下(0%を含む)の析出物を含む、表面品質及びスポット溶接性に優れた高強度溶融亜鉛めっき鋼板を提供する。
炭素(C)は、鋼の強度確保のための必須元素であり、十分な強度を確保するためには0.1%以上添加することが好ましい。ただし、その含量が0.3%を超えると、延性と共に曲げ加工性及び溶接性が低下し、プレス成形及びロール加工性が悪くなるという問題がある。
シリコン(Si)は、鋼の降伏強度を向上させると共に、常温でフェライト及び残留オーステナイトを安定化させるのに有効な元素である。また、冷却時にオーステナイトからのセメンタイトの析出を抑制し、炭化物の成長を著しく阻止することにより、TRIP(変態誘起塑性)鋼において十分な量の残留オーステナイトを安定化させるのに寄与する。
マンガン(Mn)は、フェライトの形成を抑制してオーステナイトを安定させる硬化能向上元素としてよく知られている。また、Mnは、鋼の強度向上に有効な元素であって、本発明で目標とする引張強度を確保するためには2.0%以上添加することが好ましい。このようなMnは、含量が高いほど強度の確保は容易であるが、焼鈍過程でMnの表面酸化量が増加してめっき性が劣る恐れがある。そこで、これを考慮して、本発明においては、Mnの上限を8.0%に制限することが好ましい。
可溶性アルミニウム(sol.Al)は、製鋼工程で脱酸のために添加される元素であり、炭窒化物形成元素である。また、Alは、フェライト域を拡大する元素であって、Ac1変態点を下げて焼鈍コストを低減するのに有利であるという効果がある。そのためには、sol.Alを0.001%以上添加することが好ましいが、その含量が0.5%を超えると、溶接性が劣化すると共に、焼鈍過程でAlの表面酸化量が増加してめっき性の確保が難しくなるという問題がある。
リン(P)は、鋼中の不純物元素であって、その含量が0.04%を超えると、溶接性が低下し、鋼の脆性が生じる危険性が大きくなり、デント欠陥を引き起こす可能性が高くなるという問題がある。よって、Pの上限を0.04%に制限することが好ましい。
硫黄(S)は、上記Pと同様に、鋼中の不純物元素であって、鋼の延性及び溶接性を阻害する元素である。その含量が0.015%を超えると、鋼の延性及び溶接性を阻害する可能性が高くなるため、その含量を0.015%以下に制限することが好ましい。
窒素(N)は、窒化物を形成する元素であって、その含量が0.02%を超えると、AlNの形成により連続鋳造時に割れが発生する危険性が著しく増加するという問題があるため、その上限を0.02%に制限することが好ましい。
クロム(Cr)は、硬化能増加元素であって、フェライトの形成を抑制するという効果がある。特に、本発明においては、上述のようにフェライトの形成を抑制して所定の分率の残留オーステナイトを確保するためには、0.01%以上添加することが好ましいが、その含量が0.7%を超えると、過量の合金投入によりコスト上昇を招くという問題があるため好ましくない。
チタン(Ti)は、窒化物形成元素であって、鋼中のN濃度を低下させるという効果がある。そのためには、化学当量的に(48/14)×[N(重量%)]以上添加する必要がある。Tiを添加しない場合は、AlNの形成により連続鋳造時に割れが発生する恐れがあるため好ましくなく、その含量が0.1%を超えて高すぎると、固溶Nの除去の他に、さらに炭化物が析出することにより、マルテンサイトの炭素濃度及び強度が低下するため好ましくない。
モリブデン(Mo)は、上記Crと同様に、鋼の強度向上に寄与する効果が大きい元素であって、溶融亜鉛の濡れ性を阻害しないと共に強度確保に有利な元素である。ただし、このようなMoは、含量が高すぎると経済的に好ましくないため、その含量を0.1%以下に制限することが好ましい。
アンチモン(Sb)は、めっき表面品質を向上させるのに有用な元素であって、添加時、素地鋼板の表層部にSbが濃化してSi、Mn、Alなどの表面拡散が相対的に抑制されることにより、めっき性が向上するという効果が得られる。ただし、このようなSbは、含量が0.05%を超えると、鋼の脆性が増加して伸びが減少する恐れがあるという問題があるため、その含量を0.05%以下に制限することが好ましい。
ニオブ(Nb)は、オーステナイト粒界に炭化物の形態で偏析し、焼鈍熱処理時にオーステナイト結晶粒の粗大化を抑制することにより、強度を向上させるという効果がある。ただし、このようなNbは、含量が0.1%を超えると、製造コストが大きく上昇するという問題があるため、これを考慮して、その含量を0.1%以下に制限することが好ましい。
ボロン(B)は、鋼の強度確保のために添加される元素であるが、その含量が0.005%を超えると、焼鈍時に表面に濃化してめっき性を大きく阻害するという問題がある。よって、本発明においては、上記Bを添加する際に、その含量を0.005%以下に制限することが好ましい。
まず、上記成分組成を満たす鋼スラブを所定の温度範囲に再加熱することが好ましい。
上記に従って再加熱された鋼スラブを仕上げ熱間圧延して熱延鋼板に製造することが好ましい。
上記製造された熱延鋼板を巻き取ることが好ましい。
上記巻き取られた熱延鋼板を酸洗及び冷間圧延して冷延鋼板に製造することが好ましい。
上記に従って製造された冷延鋼板を焼鈍炉に装入して焼鈍熱処理を施すことが好ましい。
上記1次再結晶焼鈍は、露点温度−40〜−20℃、ガス雰囲気3〜70%H2及び残部N2に制御された焼鈍炉で750〜950℃の温度範囲で行うことが好ましい。
上記1次再結晶焼鈍された冷延鋼板を常温に冷却し、その後それを再び焼鈍炉に装入して2次再結晶焼鈍を行うことが好ましい。
上記に従って1次及び2次再結晶焼鈍処理された冷延鋼板を所定の温度まで冷却することが好ましい。
上記条件で冷却された冷延鋼板を亜鉛めっき浴に浸漬して溶融亜鉛めっき鋼板を製造することが好ましい。
(上記表3において、Fはフェライト、γはオーステナイト、Bはベイナイト、Mはマルテンサイトを意味する。)
Claims (12)
- 素地鋼板及び前記素地鋼板の表面に形成される亜鉛めっき層を含み、
前記素地鋼板は、重量%で、炭素(C):0.1〜0.3%、シリコン(Si):0.5〜2.5%、マンガン(Mn):2.0〜8.0%、可溶性アルミニウム(sol.Al):0.001〜0.5%、リン(P):0.04%以下(0%は除く)、硫黄(S):0.015%以下(0%は除く)、窒素(N):0.02%以下(0%は除く)、クロム(Cr):0.01〜0.7%、チタン(Ti):(48/14)×[N]〜0.1%、残部Fe及び不可避不純物を含み、
前記素地鋼板は、微細組織が、面積分率で、5〜30%のフェライト、5〜20%のオーステナイト、50〜80%のベイナイト及びマルテンサイト、並びに2%以下(0%を含む)の析出物を含み、
前記素地鋼板は、表面から厚さ方向に2μm以内の微細組織が、面積分率で、50%以上のフェライト、2%以下(0%を含む)のオーステナイト、50%以下(0%を含む)のベイナイト及びマルテンサイト、並びに2%以下(0%を含む)の析出物を含む、表面品質及びスポット溶接性に優れた高強度溶融亜鉛めっき鋼板。 - 前記素地鋼板は、重量%で、モリブデン(Mo):0.1%以下(0%を含む)、アンチモン(Sb):0.05%以下(0%を含む)、ニオブ(Nb):0.1%以下(0%を含む)及びボロン(B):0.005%以下(0%を含む)から選択される1種以上をさらに含む、請求項1に記載の表面品質及びスポット溶接性に優れた高強度溶融亜鉛めっき鋼板。
- 前記素地鋼板は、表面から厚さ方向に5μm以内にSi酸化物、Mn酸化物、Al酸化物及びCr酸化物から選択される2種以上の内部酸化物を含む、請求項1に記載の表面品質及びスポット溶接性に優れた高強度溶融亜鉛めっき鋼板。
- 前記溶融亜鉛めっき鋼板は、900MPa以上の引張強度を有し、引張強度(MPa)×伸び(%)の値が16000MPa%以上である、請求項1に記載の表面品質及びスポット溶接性に優れた高強度溶融亜鉛めっき鋼板。
- 重量%で、炭素(C):0.1〜0.3%、シリコン(Si):0.5〜2.5%、マンガン(Mn):2.0〜8.0%、可溶性アルミニウム(sol.Al):0.001〜0.5%、リン(P):0.04%以下(0%は除く)、硫黄(S):0.015%以下(0%は除く)、窒素(N):0.02%以下(0%は除く)、クロム(Cr):0.01〜0.7%、チタン(Ti):(48/14)×[N]〜0.1%、残部Fe及び不可避不純物を含む鋼スラブを1100〜1300℃の温度範囲に再加熱する段階と、
前記再加熱された鋼スラブをAr3以上の温度で仕上げ熱間圧延して熱延鋼板を製造する段階と、
前記熱延鋼板を700℃以下の温度で巻き取る段階と、
前記巻き取られた熱延鋼板を酸洗した後に冷間圧延して冷延鋼板を製造する段階と、
前記冷延鋼板を露点温度−40〜−20℃、ガス雰囲気3〜70%H2及び残部N2に制御された焼鈍炉で750〜950℃の温度範囲で5〜120秒間1次再結晶焼鈍する段階と、
前記1次再結晶焼鈍された冷延鋼板を露点温度−20〜5℃、ガス雰囲気3〜70%H2及び残部N2に制御された焼鈍炉で700〜950℃の温度範囲で5〜120秒間2次再結晶焼鈍する段階と、
前記2次再結晶焼鈍された冷延鋼板を200〜400℃まで冷却する段階と、
前記冷却された冷延鋼板を維持後に450〜500℃に再加熱又は再冷却し、その後亜鉛めっき浴に浸漬して溶融亜鉛めっき鋼板を製造する段階と、を含む、表面品質及びスポット溶接性に優れた高強度溶融亜鉛めっき鋼板の製造方法。 - 前記鋼スラブは、重量%で、モリブデン(Mo):0.1%以下(0%を含む)、アンチモン(Sb):0.05%以下(0%を含む)、ニオブ(Nb):0.1%以下(0%を含む)及びボロン(B):0.005%以下(0%を含む)から選択される1種以上をさらに含む、請求項5に記載の表面品質及びスポット溶接性に優れた高強度溶融亜鉛めっき鋼板の製造方法。
- 前記1次再結晶焼鈍する段階の後、前記2次再結晶焼鈍する前に冷却する段階をさらに含む、請求項5に記載の表面品質及びスポット溶接性に優れた高強度溶融亜鉛めっき鋼板の製造方法。
- 前記2次再結晶焼鈍する段階後の冷却は、5〜100℃/sの平均冷却速度で1次及び2次の段階的冷却を行うものである、請求項5に記載の表面品質及びスポット溶接性に優れた高強度溶融亜鉛めっき鋼板の製造方法。
- 前記維持は、40〜200秒間行うものである、請求項5に記載の表面品質及びスポット溶接性に優れた高強度溶融亜鉛めっき鋼板の製造方法。
- 前記めっき浴は、0.13〜0.3%のAl及び残部Znを含み、440〜500℃の温度範囲に維持するものである、請求項5に記載の表面品質及びスポット溶接性に優れた高強度溶融亜鉛めっき鋼板の製造方法。
- 前記製造された溶融亜鉛めっき鋼板のめっき付着量を調整し、その後冷却する段階をさらに含むものである、請求項5に記載の表面品質及びスポット溶接性に優れた高強度溶融亜鉛めっき鋼板の製造方法。
- 前記冷延鋼板を1次再結晶焼鈍する前に、前記冷延鋼板の表面にFe、Ni、Co及びSnのうち1種以上を片面当たり0.01〜5.0g/m2の付着量でプレめっきする段階をさらに含むものである、請求項5に記載の表面品質及びスポット溶接性に優れた高強度溶融亜鉛めっき鋼板の製造方法。
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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JP2021500474A (ja) * | 2016-12-21 | 2021-01-07 | アルセロールミタル | 被覆鋼板の製造方法 |
WO2021200577A1 (ja) * | 2020-03-31 | 2021-10-07 | Jfeスチール株式会社 | 鋼板、部材及びそれらの製造方法 |
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WO2022071305A1 (ja) * | 2020-09-30 | 2022-04-07 | 日本製鉄株式会社 | 鋼板 |
WO2022149505A1 (ja) * | 2021-01-08 | 2022-07-14 | 日本製鉄株式会社 | 溶接継手及び自動車部品 |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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KR20230066166A (ko) * | 2021-11-05 | 2023-05-15 | 주식회사 포스코 | 내충돌성능 및 성형성이 우수한 고강도 강판 및 이의 제조방법 |
WO2023224200A1 (ko) * | 2022-05-19 | 2023-11-23 | 현대제철 주식회사 | 용접성이 우수한 초고강도 아연도금강판 및 그 제조방법 |
WO2024117743A1 (ko) * | 2022-11-29 | 2024-06-06 | 주식회사 포스코 | 구멍 확장성이 우수한 초고강도 강판 및 이의 제조방법 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013047820A1 (ja) * | 2011-09-30 | 2013-04-04 | 新日鐵住金株式会社 | 溶融亜鉛めっき鋼板及びその製造方法 |
WO2013118679A1 (ja) * | 2012-02-08 | 2013-08-15 | 新日鐵住金株式会社 | 高強度冷延鋼板及びその製造方法 |
JP2013221198A (ja) * | 2012-04-18 | 2013-10-28 | Nippon Steel & Sumitomo Metal Corp | 冷延鋼板およびその製造方法 |
WO2015005191A1 (ja) * | 2013-07-12 | 2015-01-15 | 株式会社神戸製鋼所 | めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 |
WO2015022778A1 (ja) * | 2013-08-12 | 2015-02-19 | Jfeスチール株式会社 | 高強度溶融亜鉛めっき鋼板の製造方法及び高強度合金化溶融亜鉛めっき鋼板の製造方法 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4664475B2 (ja) | 2000-09-07 | 2011-04-06 | 新日本製鐵株式会社 | 加工性とスポット溶接性に優れた高強度冷延鋼板および高強度めっき鋼板とその製造方法 |
EP1342801B1 (en) | 2000-09-12 | 2011-02-02 | JFE Steel Corporation | High tensile strength hot dip plated steel sheet and method for production thereof |
EP1612288B9 (en) | 2003-04-10 | 2010-10-27 | Nippon Steel Corporation | A method for producing a hot-dip zinc coated steel sheet having high strength |
EP2009127A1 (en) | 2007-06-29 | 2008-12-31 | ArcelorMittal France | Process for manufacturing a galvanized or a galvannealed steel sheet by DFF regulation |
JP5672745B2 (ja) | 2009-03-31 | 2015-02-18 | Jfeスチール株式会社 | 高強度溶融亜鉛めっき鋼板およびその製造方法 |
JP4924730B2 (ja) | 2009-04-28 | 2012-04-25 | Jfeスチール株式会社 | 加工性、溶接性および疲労特性に優れる高強度溶融亜鉛めっき鋼板およびその製造方法 |
JP5636683B2 (ja) | 2010-01-28 | 2014-12-10 | 新日鐵住金株式会社 | 密着性に優れた高強度合金化溶融亜鉛めっき鋼板および製造方法 |
JP5141811B2 (ja) | 2010-11-12 | 2013-02-13 | Jfeスチール株式会社 | 均一伸びとめっき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 |
CN103805840B (zh) | 2012-11-15 | 2016-12-21 | 宝山钢铁股份有限公司 | 一种高成形性热镀锌超高强度钢板及其制造方法 |
KR101528010B1 (ko) | 2012-12-21 | 2015-06-10 | 주식회사 포스코 | 도금성이 우수한 고망간강 용융아연도금강판 및 이의 제조방법 |
CN105143486B (zh) * | 2013-04-15 | 2017-05-03 | 杰富意钢铁株式会社 | 高强度热轧钢板及其制造方法 |
KR20140131203A (ko) | 2013-05-03 | 2014-11-12 | 주식회사 포스코 | 표면품질, 도금밀착성 및 용접성이 우수한 고강도 용융아연도금강판 제조방법 |
WO2015001367A1 (en) * | 2013-07-04 | 2015-01-08 | Arcelormittal Investigación Y Desarrollo Sl | Cold rolled steel sheet, method of manufacturing and vehicle |
KR101594670B1 (ko) | 2014-05-13 | 2016-02-17 | 주식회사 포스코 | 연성이 우수한 고강도 냉연강판, 용융아연도금강판 및 이들의 제조방법 |
-
2015
- 2015-12-15 KR KR1020150179185A patent/KR101758485B1/ko active IP Right Grant
-
2016
- 2016-12-13 JP JP2018530902A patent/JP6763023B2/ja active Active
- 2016-12-13 WO PCT/KR2016/014607 patent/WO2017105064A1/ko active Application Filing
- 2016-12-13 US US16/060,208 patent/US10900097B2/en active Active
- 2016-12-13 MX MX2018007347A patent/MX2018007347A/es unknown
- 2016-12-13 EP EP16876006.4A patent/EP3392363B1/en active Active
- 2016-12-13 CN CN201680074328.5A patent/CN108431273B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013047820A1 (ja) * | 2011-09-30 | 2013-04-04 | 新日鐵住金株式会社 | 溶融亜鉛めっき鋼板及びその製造方法 |
WO2013118679A1 (ja) * | 2012-02-08 | 2013-08-15 | 新日鐵住金株式会社 | 高強度冷延鋼板及びその製造方法 |
JP2013221198A (ja) * | 2012-04-18 | 2013-10-28 | Nippon Steel & Sumitomo Metal Corp | 冷延鋼板およびその製造方法 |
WO2015005191A1 (ja) * | 2013-07-12 | 2015-01-15 | 株式会社神戸製鋼所 | めっき性、加工性、および耐遅れ破壊特性に優れた高強度めっき鋼板、並びにその製造方法 |
WO2015022778A1 (ja) * | 2013-08-12 | 2015-02-19 | Jfeスチール株式会社 | 高強度溶融亜鉛めっき鋼板の製造方法及び高強度合金化溶融亜鉛めっき鋼板の製造方法 |
Cited By (34)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021500474A (ja) * | 2016-12-21 | 2021-01-07 | アルセロールミタル | 被覆鋼板の製造方法 |
JP6750759B1 (ja) * | 2019-05-09 | 2020-09-02 | 日本製鉄株式会社 | 鋼板及びその製造方法 |
WO2020225936A1 (ja) * | 2019-05-09 | 2020-11-12 | 日本製鉄株式会社 | 鋼板及びその製造方法 |
KR20210114042A (ko) * | 2019-05-09 | 2021-09-17 | 닛폰세이테츠 가부시키가이샤 | 강판 및 그 제조 방법 |
KR102626001B1 (ko) | 2019-05-09 | 2024-01-19 | 닛폰세이테츠 가부시키가이샤 | 강판 및 그 제조 방법 |
JP7044196B2 (ja) | 2020-03-31 | 2022-03-30 | Jfeスチール株式会社 | 鋼板の製造方法及び部材の製造方法 |
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WO2021200579A1 (ja) * | 2020-03-31 | 2021-10-07 | Jfeスチール株式会社 | 鋼板、部材及びそれらの製造方法 |
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WO2021200577A1 (ja) * | 2020-03-31 | 2021-10-07 | Jfeスチール株式会社 | 鋼板、部材及びそれらの製造方法 |
WO2022071305A1 (ja) * | 2020-09-30 | 2022-04-07 | 日本製鉄株式会社 | 鋼板 |
CN116209781A (zh) * | 2020-09-30 | 2023-06-02 | 日本制铁株式会社 | 钢板 |
JP7481651B2 (ja) | 2020-09-30 | 2024-05-13 | 日本製鉄株式会社 | 鋼板 |
JP7124990B1 (ja) * | 2021-01-08 | 2022-08-24 | 日本製鉄株式会社 | 溶接継手及び自動車部品 |
WO2022149505A1 (ja) * | 2021-01-08 | 2022-07-14 | 日本製鉄株式会社 | 溶接継手及び自動車部品 |
Also Published As
Publication number | Publication date |
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EP3392363A1 (en) | 2018-10-24 |
WO2017105064A1 (ko) | 2017-06-22 |
CN108431273B (zh) | 2020-06-12 |
EP3392363B1 (en) | 2020-03-25 |
EP3392363A4 (en) | 2018-11-21 |
US10900097B2 (en) | 2021-01-26 |
US20180371570A1 (en) | 2018-12-27 |
MX2018007347A (es) | 2018-08-24 |
KR101758485B1 (ko) | 2017-07-17 |
JP6763023B2 (ja) | 2020-09-30 |
CN108431273A (zh) | 2018-08-21 |
KR20170071658A (ko) | 2017-06-26 |
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