JP2021509437A - 熱間プレス成形用めっき鋼板、これを用いた成形部材及びこれらの製造方法 - Google Patents
熱間プレス成形用めっき鋼板、これを用いた成形部材及びこれらの製造方法 Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 155
- 239000010959 steel Substances 0.000 title claims abstract description 155
- 238000004519 manufacturing process Methods 0.000 title claims description 31
- 238000007747 plating Methods 0.000 claims abstract description 197
- 229910018137 Al-Zn Inorganic materials 0.000 claims abstract description 54
- 229910018573 Al—Zn Inorganic materials 0.000 claims abstract description 54
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 22
- 239000000956 alloy Substances 0.000 claims abstract description 22
- 229910052742 iron Inorganic materials 0.000 claims abstract description 16
- 239000012535 impurity Substances 0.000 claims abstract description 12
- 238000000465 moulding Methods 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 5
- 230000009466 transformation Effects 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 abstract description 12
- 239000010410 layer Substances 0.000 description 169
- 239000011701 zinc Substances 0.000 description 53
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 31
- 230000007797 corrosion Effects 0.000 description 30
- 238000005260 corrosion Methods 0.000 description 30
- 229910001338 liquidmetal Inorganic materials 0.000 description 13
- 229910001335 Galvanized steel Inorganic materials 0.000 description 12
- 239000008397 galvanized steel Substances 0.000 description 12
- 238000012360 testing method Methods 0.000 description 12
- 239000000243 solution Substances 0.000 description 11
- 229910052782 aluminium Inorganic materials 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000009257 reactivity Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000010960 cold rolled steel Substances 0.000 description 2
- 238000005261 decarburization Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005246 galvanizing Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- -1 20% or less Si Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
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- 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
- B32B15/012—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 aluminium or an aluminium alloy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/10—Alloys based on aluminium with zinc as the next major constituent
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
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- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
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- C23C2/12—Aluminium or alloys based thereon
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- 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
- C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
- C23C2/16—Removing excess of molten coatings; Controlling or regulating the coating thickness using fluids under pressure, e.g. air knives
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- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
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- 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
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
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- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
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- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/021—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal alloy layer
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- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
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- C23C28/023—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only
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- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/02—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
- C23C28/023—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only
- C23C28/025—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material only coatings of metal elements only with at least one zinc-based layer
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- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12736—Al-base component
- Y10T428/1275—Next to Group VIII or IB metal-base component
- Y10T428/12757—Fe
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Abstract
Description
厚さ1.5mmの熱間プレス成形用冷延鋼板を素地鋼板として設けた。素地鋼板としては、重量%で、C:0.22wt%、Si:0.24%、Mn:1.56%、B:0.0028%、残りのFe及びその他の不可避不純物を含む冷延鋼板を用いた。次に、5%水素が含有された窒素雰囲気の焼鈍炉において800℃の温度で素地鋼板を熱処理して素地鋼板の表面を還元処理し、660℃の引込温度で設けられたそれぞれのめっき浴に浸漬して、めっき鋼板試験片を製造した。めっき浴の成分はそれぞれ、下記表2のとおりである。めっき浴浸漬後にエアーナイフを用いてめっき量を一定に調節した後、冷却した。
Claims (12)
- 素地鋼板と、
前記素地鋼板の少なくとも一面に形成されたAl−Zn系めっき層と、
前記素地鋼板と前記Al−Zn系めっき層の間に形成されたFe−Al系界面合金層と、を含み、
前記Al−Zn系めっき層は、重量%で、Zn:10〜30%、Fe:1%以下、残りのAl及び不純物を含む、熱間プレス成形用めっき鋼板。 - 前記Fe−Al系界面合金層は、重量%で、Al:30〜60%、Fe:30〜60%、Si:20%以下、及びその他の不純物を含む、請求項1に記載の熱間プレス成形用めっき鋼板。
- 前記Al−Zn系めっき層は、重量%で、Be、Ti、及びMnからなる群より選択された1種以上を0.05〜10%さらに含む、請求項1に記載の熱間プレス成形用めっき鋼板。
- 前記Al−Zn系めっき層は、重量%で、2%以下のMgを含む、請求項1に記載の熱間プレス成形用めっき鋼板。
- 前記Al−Zn系めっき層及びFe−Al系界面合金層の厚さ合計は平均5〜40μmである、請求項1に記載の熱間プレス成形用めっき鋼板。
- 前記Fe−Al系界面合金層は、前記Al−Zn系めっき層及び前記Fe−Al系界面合金層の厚さ合計に対して5〜35%の厚さを有する、請求項1に記載の熱間プレス成形用めっき鋼板。
- 請求項1から請求項6のいずれか一項のめっき鋼板を熱間プレス成形して製造される、熱間プレス成形部材。
- 素地鋼板を設ける段階と、
重量%で、Zn:10〜30%、Si:5〜15%、残りのAl及びその他の不純物を含むめっき液に前記素地鋼板を浸漬する段階と、
前記めっき液から排出された鋼板を350℃の温度範囲まで15〜25℃/sで冷却する段階と、を含み、
前記熱間プレス成形用めっき鋼板は、前記素地鋼板の少なくとも一面に形成されたAl−Zn系めっき層と、前記素地鋼板と前記Al−Zn系めっき層の間に形成されたFe−Al系界面合金層と、を含む、熱間プレス成形用めっき鋼板の製造方法。 - 前記Fe−Al系界面合金層は、前記Al−Zn系めっき層及び前記Fe−Al系界面合金層の厚さ合計に対して5〜35%の厚さを有するように形成される、請求項8に記載の熱間プレス成形用めっき鋼板の製造方法。
- 前記めっき液は、重量%で、Be、Ti、及びMnからなる群より選択された1種以上を0.05〜10%さらに含む、請求項8に記載の熱間プレス成形用めっき鋼板の製造方法。
- 前記めっき液は、重量%で、2%以下のMgを含む、請求項8に記載の熱間プレス成形用めっき鋼板の製造方法。
- 請求項8から請求項11のいずれか1つの製造方法で製造されためっき鋼板をAc3変態点以上の温度範囲で加熱する段階と、
前記加熱されためっき鋼板を前記温度で熱間プレス成形する段階と、
前記熱間プレス成形されためっき鋼板を冷却する段階と、を含む、熱間プレス成形部材の製造方法。
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