JP4671634B2 - 耐食性に優れた高強度焼き入れ成形体およびその製造方法 - Google Patents
耐食性に優れた高強度焼き入れ成形体およびその製造方法 Download PDFInfo
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- 238000005260 corrosion Methods 0.000 title claims description 36
- 230000007797 corrosion Effects 0.000 title claims description 36
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000011701 zinc Substances 0.000 claims description 51
- 229910000831 Steel Inorganic materials 0.000 claims description 49
- 239000010959 steel Substances 0.000 claims description 49
- 238000010438 heat treatment Methods 0.000 claims description 41
- 239000000463 material Substances 0.000 claims description 40
- 238000007747 plating Methods 0.000 claims description 35
- 238000010791 quenching Methods 0.000 claims description 29
- 230000000171 quenching effect Effects 0.000 claims description 28
- 238000005275 alloying Methods 0.000 claims description 20
- 229910052725 zinc Inorganic materials 0.000 claims description 18
- 229910001335 Galvanized steel Inorganic materials 0.000 claims description 17
- 239000008397 galvanized steel Substances 0.000 claims description 17
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 13
- 229910052742 iron Inorganic materials 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 230000001590 oxidative effect Effects 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 40
- 230000000052 comparative effect Effects 0.000 description 21
- 238000000034 method Methods 0.000 description 14
- 229910000640 Fe alloy Inorganic materials 0.000 description 10
- 229910045601 alloy Inorganic materials 0.000 description 5
- 239000000956 alloy Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 229910001297 Zn alloy Inorganic materials 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000000979 retarding effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000009713 electroplating Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000007731 hot pressing Methods 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000005482 strain hardening Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000005246 galvanizing Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002436 steel type Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229940044175 cobalt sulfate Drugs 0.000 description 1
- 229910000361 cobalt sulfate Inorganic materials 0.000 description 1
- KTVIXTQDYHMGHF-UHFFFAOYSA-L cobalt(2+) sulfate Chemical compound [Co+2].[O-]S([O-])(=O)=O KTVIXTQDYHMGHF-UHFFFAOYSA-L 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical class Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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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
- 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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- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
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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
- 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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Description
1)亜鉛めっき系鋼材をめっき後に焼き入れした高強度焼き入れ成形体であって、焼入れ後の成形体鋼材表面に、Znを主成分とし、合金化遅延機能および易酸化性機能を有するSiを単独もしくはAlとの複合で0.15質量%以上含有し、Fe:9質量%以上、30質量%以下の亜鉛めっき層が、30g/m2 以上形成されていることを特徴とする耐食性に優れた高強度焼き入れ成形体、
2)合金化遅延機能および易酸化性機能を有するSiを単独もしくはAlとの複合で0.15質量%以上含有する亜鉛めっき層を備えた亜鉛めっき鋼材を、酸素0.1体積%以上の酸化雰囲気下で800℃以上950℃以下に加熱後、急冷して1)記載の焼き入れ成形体を製造する方法、
である。
まず、本発明の耐食性に優れた高強度焼き入れ成形体は、合金化遅延機能および易酸化機能を有するSiを単独もしくはAlとの複合で0.15質量%以上含有する亜鉛めっき層を備えた亜鉛めっき鋼材を、酸素0.1体積%以上の酸化雰囲気下で800℃以上950℃以下の温度範囲で加熱時間を適宜調整して、加熱した後、急冷することで得られる。
更に、前述したAl,Si以外に易酸化性元素としてMg,Ti,希土類元素の1種または2種以上を含有させることにより、酸化膜をより強固にすることができ、Znの蒸発をより抑制することも可能となる。なお、Al,Siは、易酸化性元素であると同時に合金化遅延元素でもあるため、易酸化機能および合金化遅延機能の両機能を発揮することができる。
上記、亜鉛系めっき鋼材は、上記原理から明らかなように、溶融亜鉛めっき法で作成されたものが良く、事前に合金化された合金化溶融亜鉛めっき材は合金化遅延元素の余分な消失を招き効果が低減し、電気亜鉛めっき法では合金化遅延元素の添加にプレ処理がいるなどコストがかかるので好ましくない。
尚、本方法の態様であるが、[1] 亜鉛めっき系鋼材を冷間で加工後、加熱冷却しても、[2] 鋼材を冷間加工し、亜鉛めっき後、加熱冷却しても、[3] 亜鉛めっき系鋼材を所謂ホットプレスのように加熱後加工、冷却してもよい。
本発明は焼き入れ後の鋼材表面において、Znを主体としたFe:9質量%以上、30質量%以下からなるZn−Fe合金層が30g/m2以上なければならない。30g/m2未満では、焼き入れ時の加熱により生成されるFeを主体とした合金層が腐食時にFe錆を生じ体積膨張するので十分な耐食性が得られない。尚、加熱により生成されるFeを主体とした合金層については特に制限を設けるものではないが、本発明では5g/m2以上生成する。焼き入れ後の強度は、必要とされる強度があればよく、目的により異なるが800Mpa以上あればよい。
また、Zn−Fe合金層(合金めっき層)中に、耐食性の一層の向上や、化成処理性の向上を目的としてNi,Co,Mn,P,Bなどの元素を含有させていても、Znを主体としFe:30質量%以下からなる限りにおいては本発明の範囲内である。
次に、本発明の実施例を比較例とともにあげる。
電気Feめっき : 硫酸第1鉄めっき浴
電気Niめっき : ワット浴
電気Coめっき : 硫酸コバルトめっき浴
熱間処理は大気雰囲気下または所定空気比の雰囲気下にて電気炉または高周波誘導加熱炉またはガス炉または赤外加熱炉を用い、鋼板を加熱し、炉から鋼板を取り出し、その後、該鋼板を水冷または金型冷却またはガス冷却した。
強度は、製造後の強度評価を厳しくするためガスジェットにより冷却した後、JIS5号引張試験片のL方向引張にて評価し、その評価結果を表3に示し、800MPaを超えるものを良好とした。
耐食性は、製造後の表面に対し、脱脂、およびパルボンドLA35(日本パーカーライジング社製)にて、メーカー処方通り化成処理を行い、さらにカチオン電着塗装(パワーニクス110:日本ペイント社製)を15μm実施し、クロスカットを施した後、アメリカ自動車工業会規格SAE−J2334腐食試験条件にて300サイクル実施後のクロスカット部からの塗膜フクレ巾(片側)を測定した。その測定結果を表3に示す。
本例では地鉄までの電解剥離曲線を示す。
以上のように、本発明は亜鉛系めっき鋼材において焼き入れ後の耐食性を発揮するために、焼き入れの加熱によるB部の生成の抑制と制御および亜鉛の揮発の抑制によって耐食効果のあるA部を所定量以上残すことによりなされたものである。
Claims (2)
- 亜鉛めっき系鋼材をめっき後に焼き入れした高強度焼き入れ成形体であって、焼入れ後の成形体鋼材表面に、Znを主成分とし、合金化遅延機能および易酸化性機能を有するSiを単独もしくはAlとの複合で0.15質量%以上含有し、Fe:9質量%以上、30質量%以下の亜鉛めっき層が、30g/m2 以上形成されていることを特徴とする耐食性に優れた高強度焼き入れ成形体。
- 合金化遅延機能および易酸化性機能を有するSiを単独もしくはAlとの複合で0.15質量%以上含有する亜鉛めっき層を備えた亜鉛めっき鋼材を、酸素0.1体積%以上の酸化雰囲気下で800℃以上950℃以下に加熱後、急冷して請求項1記載の焼き入れ成形体を製造することを特徴とする高強度焼き入れ成形体の製造方法。
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US11/631,965 US7892605B2 (en) | 2004-07-09 | 2005-07-08 | High-strength quenched formed body with good corrosion resistance and process for producing the same |
CNB2005800231363A CN100543170C (zh) | 2004-07-09 | 2005-07-08 | 具有良好耐蚀性的高强度淬火成形体及其生产方法 |
PCT/JP2005/013106 WO2006006696A1 (ja) | 2004-07-09 | 2005-07-08 | 耐食性に優れた高強度焼き入れ成形体およびその製造方法 |
CA002573224A CA2573224C (en) | 2004-07-09 | 2005-07-08 | High-strength quenched formed body with good corrosion resistance and process for producing the same |
US12/880,537 US8133544B2 (en) | 2004-07-09 | 2010-09-13 | High-strength quenched formed body with good corrosion resistance and process for producing the same |
US13/012,182 US8697253B2 (en) | 2004-07-09 | 2011-01-24 | High-strength quenched formed body with good corrosion resistance |
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WO2023132350A1 (ja) | 2022-01-06 | 2023-07-13 | 日本製鉄株式会社 | ホットスタンプ用鋼板、ホットスタンプ用鋼板の製造方法、及びホットスタンプ成形体 |
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Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0726360A (ja) * | 1993-07-09 | 1995-01-27 | Sumitomo Metal Ind Ltd | 低表面粗度合金化溶融亜鉛めっき鋼板の製造方法 |
JPH07292452A (ja) * | 1994-04-26 | 1995-11-07 | Sumitomo Metal Ind Ltd | 耐皮膜破壊性に優れた合金化処理亜鉛めっき鋼板 |
JPH08176778A (ja) * | 1994-12-20 | 1996-07-09 | Sumitomo Metal Ind Ltd | 合金化溶融亜鉛めっき鋼板の製造方法 |
JP2000248338A (ja) * | 1998-12-28 | 2000-09-12 | Kobe Steel Ltd | 焼入部の靱性に優れた高周波焼入用鋼板、高周波焼入強化部材およびその製造方法 |
JP2000248350A (ja) * | 1999-03-02 | 2000-09-12 | Toyota Motor Corp | プレス成形体の製造方法 |
JP2003096541A (ja) * | 2001-09-21 | 2003-04-03 | Kawasaki Steel Corp | 強度延性バランス、めっき密着性と耐食性に優れた高張力溶融亜鉛めっき鋼板および高張力合金化溶融亜鉛めっき鋼板 |
JP2003105513A (ja) * | 2001-09-28 | 2003-04-09 | Nippon Steel Corp | 外観と加工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 |
JP2003126920A (ja) * | 2001-10-23 | 2003-05-08 | Sumitomo Metal Ind Ltd | 熱間プレス加工方法 |
JP2003147499A (ja) * | 2001-11-07 | 2003-05-21 | Sumitomo Metal Ind Ltd | 熱間プレス用鋼板およびその製造方法 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61127849A (ja) * | 1984-11-26 | 1986-06-16 | Kawasaki Steel Corp | 曲管加工用管用鋼 |
JPH01263255A (ja) * | 1988-04-14 | 1989-10-19 | Nippon Aen Kogyo Kk | 高付着溶融アルミニウム−亜鉛合金めっき方法 |
US5283280A (en) * | 1992-11-05 | 1994-02-01 | Tech One, Inc. | Composition and method for coating an object of interest |
JP3080014B2 (ja) * | 1996-11-11 | 2000-08-21 | 住友金属工業株式会社 | 溶融めっき方法 |
JP2001295015A (ja) * | 2000-02-09 | 2001-10-26 | Nisshin Steel Co Ltd | 高Al含有溶融Zn−Al−Mg系めっき鋼板 |
FR2807447B1 (fr) | 2000-04-07 | 2002-10-11 | Usinor | Procede de realisation d'une piece a tres hautes caracteristiques mecaniques, mise en forme par emboutissage, a partir d'une bande de tole d'acier laminee et notamment laminee a chaud et revetue |
JP2002363721A (ja) * | 2001-03-30 | 2002-12-18 | Nisshin Steel Co Ltd | 耐食性に優れた車輌用資材および車輌用部材 |
JP3582504B2 (ja) | 2001-08-31 | 2004-10-27 | 住友金属工業株式会社 | 熱間プレス用めっき鋼板 |
WO2003035922A1 (fr) * | 2001-10-23 | 2003-05-01 | Sumitomo Metal Industries, Ltd. | Procede de travail a la presse, produit en acier plaque destine a ce procede et procede de production de ce produit en acier |
JP4039548B2 (ja) | 2001-10-23 | 2008-01-30 | 住友金属工業株式会社 | 耐食性に優れた熱間プレス成形品 |
US6677058B1 (en) * | 2002-07-31 | 2004-01-13 | Nisshin Steel Co., Ltd. | Hot-dip Zn plated steel sheet excellent in luster-retaining property and method of producing the same |
JP4671634B2 (ja) | 2004-07-09 | 2011-04-20 | 新日本製鐵株式会社 | 耐食性に優れた高強度焼き入れ成形体およびその製造方法 |
-
2004
- 2004-07-09 JP JP2004203544A patent/JP4671634B2/ja not_active Expired - Lifetime
-
2005
- 2005-07-08 WO PCT/JP2005/013106 patent/WO2006006696A1/ja active Application Filing
- 2005-07-08 CN CNB2005800231363A patent/CN100543170C/zh active Active
- 2005-07-08 US US11/631,965 patent/US7892605B2/en active Active
- 2005-07-08 CA CA002573224A patent/CA2573224C/en active Active
-
2010
- 2010-09-13 US US12/880,537 patent/US8133544B2/en active Active
-
2011
- 2011-01-24 US US13/012,182 patent/US8697253B2/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0726360A (ja) * | 1993-07-09 | 1995-01-27 | Sumitomo Metal Ind Ltd | 低表面粗度合金化溶融亜鉛めっき鋼板の製造方法 |
JPH07292452A (ja) * | 1994-04-26 | 1995-11-07 | Sumitomo Metal Ind Ltd | 耐皮膜破壊性に優れた合金化処理亜鉛めっき鋼板 |
JPH08176778A (ja) * | 1994-12-20 | 1996-07-09 | Sumitomo Metal Ind Ltd | 合金化溶融亜鉛めっき鋼板の製造方法 |
JP2000248338A (ja) * | 1998-12-28 | 2000-09-12 | Kobe Steel Ltd | 焼入部の靱性に優れた高周波焼入用鋼板、高周波焼入強化部材およびその製造方法 |
JP2000248350A (ja) * | 1999-03-02 | 2000-09-12 | Toyota Motor Corp | プレス成形体の製造方法 |
JP2003096541A (ja) * | 2001-09-21 | 2003-04-03 | Kawasaki Steel Corp | 強度延性バランス、めっき密着性と耐食性に優れた高張力溶融亜鉛めっき鋼板および高張力合金化溶融亜鉛めっき鋼板 |
JP2003105513A (ja) * | 2001-09-28 | 2003-04-09 | Nippon Steel Corp | 外観と加工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 |
JP2003126920A (ja) * | 2001-10-23 | 2003-05-08 | Sumitomo Metal Ind Ltd | 熱間プレス加工方法 |
JP2003147499A (ja) * | 2001-11-07 | 2003-05-21 | Sumitomo Metal Ind Ltd | 熱間プレス用鋼板およびその製造方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023132349A1 (ja) | 2022-01-06 | 2023-07-13 | 日本製鉄株式会社 | ホットスタンプ用鋼板、ホットスタンプ用鋼板の製造方法、及びホットスタンプ成形体 |
WO2023132350A1 (ja) | 2022-01-06 | 2023-07-13 | 日本製鉄株式会社 | ホットスタンプ用鋼板、ホットスタンプ用鋼板の製造方法、及びホットスタンプ成形体 |
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US20110117382A1 (en) | 2011-05-19 |
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CA2573224A1 (en) | 2006-01-19 |
US8133544B2 (en) | 2012-03-13 |
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