CN107667182A - 用于钢部件热成形的方法 - Google Patents
用于钢部件热成形的方法 Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 82
- 239000010959 steel Substances 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 45
- 239000010410 layer Substances 0.000 claims abstract description 65
- 238000010438 heat treatment Methods 0.000 claims abstract description 33
- 239000011241 protective layer Substances 0.000 claims abstract description 22
- 238000005260 corrosion Methods 0.000 claims abstract description 14
- 230000007797 corrosion Effects 0.000 claims abstract description 14
- 238000002203 pretreatment Methods 0.000 claims abstract description 13
- 238000010301 surface-oxidation reaction Methods 0.000 claims abstract description 9
- 238000005299 abrasion Methods 0.000 claims abstract description 7
- 238000005516 engineering process Methods 0.000 claims abstract description 7
- 238000010791 quenching Methods 0.000 claims abstract description 5
- 230000000171 quenching effect Effects 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims description 38
- 239000011248 coating agent Substances 0.000 claims description 37
- 239000000463 material Substances 0.000 claims description 27
- 230000008569 process Effects 0.000 claims description 17
- 238000005253 cladding Methods 0.000 claims description 9
- 238000005470 impregnation Methods 0.000 claims description 9
- 238000009792 diffusion process Methods 0.000 claims description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- 238000005530 etching Methods 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 claims description 4
- 238000002161 passivation Methods 0.000 claims description 4
- 230000003746 surface roughness Effects 0.000 claims description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- PMTRSEDNJGMXLN-UHFFFAOYSA-N titanium zirconium Chemical compound [Ti].[Zr] PMTRSEDNJGMXLN-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 239000012670 alkaline solution Substances 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims description 2
- PALQHNLJJQMCIQ-UHFFFAOYSA-N boron;manganese Chemical compound [Mn]#B PALQHNLJJQMCIQ-UHFFFAOYSA-N 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 238000007598 dipping method Methods 0.000 claims description 2
- 229910000734 martensite Inorganic materials 0.000 claims description 2
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 229910017082 Fe-Si Inorganic materials 0.000 claims 1
- 229910017133 Fe—Si Inorganic materials 0.000 claims 1
- 229910006639 Si—Mn Inorganic materials 0.000 claims 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 239000010936 titanium Substances 0.000 claims 1
- 229910052719 titanium Inorganic materials 0.000 claims 1
- KMWBBMXGHHLDKL-UHFFFAOYSA-N [AlH3].[Si] Chemical compound [AlH3].[Si] KMWBBMXGHHLDKL-UHFFFAOYSA-N 0.000 description 6
- 239000002585 base Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 229910000635 Spelter Inorganic materials 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 235000019592 roughness Nutrition 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 238000003856 thermoforming Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- -1 20MnB5 Chemical compound 0.000 description 1
- 229910018084 Al-Fe Inorganic materials 0.000 description 1
- 229910018125 Al-Si Inorganic materials 0.000 description 1
- 229910000632 Alusil Inorganic materials 0.000 description 1
- 229910018192 Al—Fe Inorganic materials 0.000 description 1
- 229910018191 Al—Fe—Si Inorganic materials 0.000 description 1
- 229910018520 Al—Si Inorganic materials 0.000 description 1
- 229910000720 Silicomanganese Inorganic materials 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 229910001093 Zr alloy Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000001931 thermography Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
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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
- C21D1/673—Quenching devices for die quenching
-
- 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
- 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
- C21D8/0278—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular surface treatment
-
- 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
- C23C2/12—Aluminium or alloys based thereon
-
- 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
- C23C2/26—After-treatment
-
- 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
- C23C2/26—After-treatment
- C23C2/261—After-treatment in a gas atmosphere, e.g. inert or reducing atmosphere
-
- 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
- C23C2/26—After-treatment
- C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
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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
- C23C2/26—After-treatment
- C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
- C23C2/29—Cooling or quenching
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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
- 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
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/32—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer
- C23C28/321—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one pure metallic layer with at least one metal alloy layer
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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
- 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
- C23C28/30—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer
- C23C28/34—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates
- C23C28/345—Coatings combining at least one metallic layer and at least one inorganic non-metallic layer including at least one inorganic non-metallic material layer, e.g. metal carbide, nitride, boride, silicide layer and their mixtures, enamels, phosphates and sulphates with at least one oxide layer
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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
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
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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
- 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
- C21D8/0478—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 involving a particular surface treatment
Abstract
本发明涉及用于钢部件(1)热成形的方法,该钢部件在热处理步骤(II)中加热至完全或部分奥氏体化的程度,且该加热的钢部件(1)在成形步骤(III)中既进行热成形也进行淬火硬化,其中在工艺技术上在热处理步骤(II)之前进行第一预处理步骤(la),其中钢部件(1)布置有耐腐蚀保护层(15)以避免在热处理步骤(II)中起皮。根据本发明,在进行热处理步骤(II)之前在第二预处理步骤(Ib)中进行表面氧化,其中在起皮保护层(15)上形成反应惰性的耐腐蚀氧化层(17),借助该氧化层减少在成形步骤(III)中的磨蚀性工具磨损。
Description
本发明涉及根据权利要求1的前序部分的用于钢部件热成形的方法以及根据权利要求17的钢部件。
在车辆-车身建造中,特别是可以在客舱区域中使用高-或超高强度的热成形的钢部件,例如用于B柱、中通道增强或纵桁。在热成形时,在炉中(在大约920℃下)加热钢板坯(Platine)至完全奥氏体化的程度。该钢板坯在热状态下插入成形工具(例如深冲压机)中并在压制时淬火硬化。以此方式,钢部件的相对软的铁素体-珠光体的起始结构转化成具有超过1000 Mpa范围的材料依赖性强度的硬马氏体结构。通常使用具有例如0.24%碳的硼合金(bohrlegiert)钢,其中可以通过合金(特别是硼)控制转化行为和通过碳含量控制可实现的强度。
由EP 2 242 863 B1已知用于此类钢部件热成形的一般方法。该钢部件在进行热处理步骤之前在炉中经受在工艺技术上上游的预处理步骤,其中在该钢部件的金属表面上形成铝硅合金的起皮保护层。在熔融浸渍法中将其施加到钢部件上。
在热处理过程中,炉温为900至940℃,而炉中的停留时间为大约4至10分钟。出于这一原因,在现有技术中不能使用传统的锌涂层代替上述铝硅涂层。此类锌涂层会在上述炉温下滴落或烧坏。
充当起皮保护层的铝硅涂层具有下列缺点:例如由于铝硅涂层产生钢部件的粗糙的硬表面结构,这在压制硬化时导致严重的工具磨损。此外,产生具有严重变化的层性能的严重层状显现(ausgeprägt)的层结构以及在基础材料上整体上仅小的层粘附,其为20 N/mm2的数量级。此外,铝硅涂层导致钢部件的高边缘腐蚀倾向以及导致在电阻焊接时电极帽(Kappen)寿命的减少。铝硅涂层此外损害焊接接头的品质:铝和硅在焊接操作过程中均不蒸发,而是在焊缝中凝固,由此可能在那里出现弱点。此外,AlSi涂层在热成形过程中和之后易于剥落或受损。由于相比于锌涂层而言缺失的远距作用(Fernwirkung),更有可能预期到腐蚀侵蚀。
本发明的目的在于,提供用于制造热成形的钢部件的方法,其中该热成形可以以简单的方式相比于现有技术中而言在工艺上更安全且更有效地进行。
该目的通过权利要求1或权利要求17的特征实现。本发明的优选的扩展实施方案公开在从属权利要求中。
本发明基于如下问题:传统的热成形工艺伴随着严重的成形工具磨损,即由于钢部件的粗糙的硬金属表面。基于这一背景,根据权利要求1的特征部分在施加起皮保护层之后进行进一步的预处理步骤,其中进行表面氧化。由此在该起皮保护层上形成反应惰性的耐腐蚀氧化层,借助该氧化层可以减少在下游的成形步骤中的磨蚀性工具磨损。
所述表面氧化可以在工艺技术上简单地例如通过浸蚀钝化进行。为了浸蚀钝化,将钢部件在浸蚀浴中用浸蚀液处理并随后例如在室温下空气干燥。该浸蚀液可以例如是酸,特别是磷酸的水溶液,或者是中性至碱性溶液。
借助这一额外的氧化层,钢部件的金属表面的粗糙度减小,由此减小在成形步骤中的磨蚀性工具磨损。此外,可以防止可能存在的将钢部件输送通过热处理炉的部件载体的早期磨损。在炉输送时,在现有技术中,钢部件的AlSi层和部件载体(特别是在使用陶瓷辊时)之间发生扩散过程,这导致陶瓷辊的提早失效。这类扩散过程借助本发明的额外氧化层而显著减少。此外,炉中的通过时间减少,因为钢部件的AlSi层与基础材料之间的合金过程根据本发明不必为了保护部件载体辊而完全结束。通过更好的基材屏蔽,可以耐受更长的允许的炉中通过时间。
为了进一步减小钢部件的表面粗糙度,可在进行热处理步骤之前进行第三预处理步骤。在第三预处理步骤中,可以例如在浸渍浴中施加高熔点的覆盖层。该覆盖层例如是钛锆层或金属氧化物层(优选氧化钛层),其覆盖所述耐腐蚀氧化层。借助该额外的覆盖层,在下游的热处理步骤中,防止位于其下的层,特别是起皮保护层熔化。通过该覆盖层的合适合金,可以克服流动行为问题。
如上所述,起皮保护层可以在常规实践中是铝硅层,其例如在熔融浸渍涂覆法或卷材涂覆法中施加到钢部件上。对此替代地,该起皮保护层也可以是锌-或锌铁涂层,其优选可以在熔融浸渍涂覆法中施加到钢部件上。其具有小于热处理炉中的热处理温度(大约920℃)的熔点,由此锌可以熔化并从钢部件流出。为了避免这一点,该锌-或锌铁涂层用金属氧化物或钛锆合金的上述覆盖层覆盖,该覆盖层的熔点大于炉中的热处理温度。由此在热处理过程中防止锌-/锌铁层的熔化。
所述钢部件的起始材料或基材可以是锰硼合金的调质钢,例如20MnB5、22MnB5、27MnB5、30MnB5。由所述起皮保护层和耐腐蚀氧化层以及任选的额外的覆盖层构成的层结构的总层厚度可以小于20 μm或大于33 μm。所述氧化层或覆盖层可以优选地具有大于2000℃的熔点、大于300 MPa的抗弯强度、大于2000 MPa的抗压强度以及大于1600 HV1的维氏硬度。
通过掩蔽钢部件,可以在通过浸蚀钝化(浸蚀装置)的过程中设定具有局部不同的表面性能的金属表面。此外可以通过卷材或板坯的有针对性的自由形式涂覆(Freiformbeschichtung)(即氧化)实现定制的性能。此外,通过本发明改进可焊接性并减小WPS电极帽的情况下的电极帽磨损。此外,改进激光切割和-焊接时的能量耦合输入,更确切地说是由于钢部件的更高吸收度。所述额外的耐腐蚀氧化层此外形成有效的氢扩散阻隔物。此外,得以提高借助热成像法通过提高发射度(更消光的表面)进行在线品质保障的可能性以及提高腐蚀区域中的抗击石强度。
本发明的在第二预处理步骤中的表面氧化可以在一个实施方案中完全地以及在钢板部件的单面或两面上进行。对此替代地,也可以部分地进行该表面氧化,即形成至少一个不含氧化层的表面部分以及至少一个含氧化层的第二表面部分。这些表面部分因此具有不同的表面粗糙度,其在成形步骤中(即在深冲压制中)形成相对于相接触的成形工具表面不同的粘附摩擦系数。以此方式,可以在热成形过程中控制材料流。
下面描述本发明的进一步的方面以及本发明的优点。例如,可以在热处理步骤中将钢部件加热到至少945℃ 的目标温度,即特别是使用600℃范围的加热停顿点(Aufheizhaltepunkt)。所述热处理可以优选地进行大约100秒至最多4000秒的时间段。在替代的加热途径(感应、传导)的情况下,可能与这些值明显向下偏离。优选地,该钢部件是具有0.4至4 mm,特别是0.5至2.50 mm的材料厚度的钢板。本发明的氧化层在此至少存在,理想地甚至在通过炉的过程中以及之后存在。在该热处理之后,在常规实践中输送到一个或多个成形工具或调质工具中以成形或调质。在成形工具中,优选地冷却至低于600℃的最终温度,特别是至低于400℃的最终温度。
通过总共三个预处理步骤,在钢部件上产生总共至少五个不同层的层体系。所述氧化层在此极为有效地防止成形工具表面和位于其下的层(即例如起皮保护层)之间的接触。例如,在本发明的氧化层下形成Al-Fe-Si相,其中特别是在这些相和部件基础材料之间形成Al-Fe相。
此外,可以在基础材料(即基材)的最外层上形成薄的铁素体层,其特别地具有小于100 μm的层厚度。该钢部件还可以含有宏观上不同的结构。
通过使用常规的工艺技术,可以在钢部件中实现局部不同的强度。例如,可以将钢部件制造为定制轧制坯板(Tailored-Rolled-Blank)、定制拼焊坯板(Tailored-Welded-Blank)或补丁坯板(Patch-Blank)。此外,该结构可以具有残余奥氏体(restaustenitisich)成分。
根据本发明制造的钢部件可以用在不同的领域中,更确切地说例如在车辆中,特别是陆用车辆、轿车或载重车辆中。根据本发明,用作装甲车辆中的安全型材是可能的。
上面阐述和/或在从属权利要求中描述的有利的本发明的设计和/或扩展实施方案可以——除了例如在明显依赖性或不可相容的替代方案的情况中外——单独地或以彼此任意组合的形式使用。
下面借助附图更详细地阐述本发明及其有利的设计和/或扩展实施方案及其优点。
图1展示在热成形之后在成品钢部件上的层结构;
图2在简化的框图中展示用于制造图1中所示的钢部件的工艺步骤;
图3至6展示在不同工艺步骤中钢部件表面上的层结构;
图7在第二实施例中展示在根据图1的视角上的在成品钢部件上的层结构;且
图8展示根据图1的视角上的另一个实施例。
在图1中例如展示在热成形之后通过炉中的扩散过程所形成的成品钢部件1的涂层体系。钢部件1的基础材料(基材)3例如是22MnB5。紧贴在基础材料3上形成扩散区5,在其上向外接着另外的合金层,即铁铝硅区7、铁铝区9、铁铝硅锰区11、铁铝区13以及氧化铝区15、氧化层17和作为覆盖层19形成氧化钛层。
图1中用附图标记2标示的层状结构对应于如由现有技术中已知的涂层体系。此外,该层状结构用氧化层17和覆盖层19覆盖。它们尤其减小钢部件1的金属表面的粗糙度,由此减小在成形步骤中以及在炉输送过程中的磨蚀性工具磨损。
下面借助图2至6描述用于制造图1中所示的钢部件1的方法。例如,在图2中,钢部件1的基础材料3首先经受预处理I以为热成形做准备。预处理I尤其具有图2中所示的工艺步骤Ia、Ib和Ic。在工艺步骤Ia中进行熔融浸渍涂覆,其中在钢部件-基础材料3上施加铝硅层15。其在热处理过程中充当起皮保护层。在随后的工艺步骤Ib中进行浸蚀钝化,其中钢部件1在浸蚀浴中用浸蚀液处理并随后在室温下空气干燥。该浸蚀浴可以例如是酸、碱的水溶液或是PH值中性的,例如磷酸,借助其使反应惰性以及耐腐蚀的氧化层17形成在铝硅层15上。随后在第三工艺步骤Ic中进行另一熔融浸渍涂覆,其中施加氧化钛层19作为覆盖层。
在图3中展示在完成工艺步骤Ia之后的,即具有AlSi层15的钢部件1。在图4中展示在工艺步骤Ib之后(即在浸蚀钝化之后)的具有额外氧化层17的钢部件1,而在图5中展示在工艺步骤Ic之后的钢部件1,即具有额外的覆盖层19。
在预处理I之后,钢部件1输送到热处理炉中,其中进行热处理II。为此,将钢部件1加热至例如至少945℃的目标温度,即示例性地可为例如100至最多4000秒的预定工艺时间。通过炉中的扩散过程,形成图6中所示的在钢部件1表面上的涂层体系。还处于热状态下的钢部件1然后经受热成形III,其中钢部件1既进行热成形也进行淬火硬化。
在上面的实施例中,起皮保护层15是Al-Si层。代替其,起皮保护层15也可以是锌-或锌铁涂层。其可以优选地在熔融浸渍涂覆法中施加到钢部件1上。
在图7中展示根据第二实施例的钢部件1,其涂层体系与图1中所示的涂层体系基本上相同。替代图1,在图7中省去覆盖层19,以使得氧化层17向外暴露。
在图8中展示另一钢部件1,其中氧化层17同样向外暴露。钢部件1的表面在图8中分为不含氧化层17的表面部分21和具有氧化层17的表面部分23。这两个表面部分21、23具有不同的表面粗糙度,其在随后的成形步骤III中形成与成形工具表面不同的粘附摩擦系数,由此在热成形过程中可控制材料流。这样不同的表面部分21、23例如可通过在通过浸蚀钝化(浸蚀设备)的过程中掩蔽钢部件1来设定。
Claims (17)
1.用于钢部件(1)热成形的方法,该钢部件在热处理步骤(II)中加热至完全或部分奥氏体化的程度,且该加热的钢部件(1)在成形步骤(III)中既进行热成形也进行淬火硬化,其中在工艺技术上在热处理步骤(II)之前进行第一预处理步骤(la),其中钢部件(1)布置有耐腐蚀的起皮保护层(15)以避免在热处理步骤(II)中起皮,
其特征在于,在进行热处理步骤(II)之前在第二预处理步骤(Ib)中进行表面氧化,其中在起皮保护层(15)上形成反应惰性的耐腐蚀氧化层(17),借助该氧化层减少在成形步骤(III)中的磨蚀性工具磨损。
2.根据权利要求1所述的方法,其特征在于,在第二预处理步骤(Ib)中的表面氧化通过浸蚀钝化进行,并且特别地为了浸蚀钝化,将钢部件(1)在浸蚀浴中用浸蚀液处理并随后干燥。
3.根据权利要求2所述的方法,其特征在于,所述浸蚀液是酸,特别是磷酸的水溶液,或者是中性至碱性溶液。
4.根据权利要求1或3所述的方法,其特征在于,在进行热处理步骤(II)之前进行第三预处理步骤(Ic),其中特别是在浸渍浴中在耐腐蚀氧化层(17) 上形成高熔点的覆盖层(19),并且借助覆盖层(19)在下游的热处理步骤(II)中防止位于其下的层熔化。
5.根据权利要求4所述的方法,其特征在于,覆盖层(19)是金属氧化物层,特别是氧化钛层或钛锆层。
6.根据前述权利要求任一项所述的方法,其特征在于,起皮保护层(15)是铝硅层,其优选在熔融浸渍涂覆法或卷材涂覆法中施加到钢部件(1)上。
7.根据前述权利要求任一项所述的方法,其特征在于,起皮保护层(15)是含铝层,其优选在熔融浸渍涂覆法或卷材涂覆法中施加到钢部件(1)上。
8.根据前述权利要求任一项所述的方法,其特征在于,起皮保护层(15)是锌-或锌铁涂层,其优选在熔融浸渍涂覆法中施加到钢部件(1)上。
9.根据前述权利要求任一项所述的方法,其特征在于,所述表面氧化在第二预处理步骤(Ib)中部分地进行,即形成至少一个不含氧化层(17)的表面部分(21)以及至少一个含氧化层(17)的表面部分(23),并且表面部分(21、23)具有不同的表面粗糙度,其在成形步骤(III)中形成相对成形工具表面不同的粘附摩擦系数,由此可以在热成形过程中控制材料流。
10.根据前述权利要求任一项所述的方法,其特征在于,钢部件(1)的起始材料或基材(3)是锰硼合金的调质钢,特别是20MnB5、22MnB5、27MnB5、30MnB5。
11.根据前述权利要求任一项所述的方法,其特征在于,所述热处理步骤之前的总层厚度(s)小于20 μm或大于33 μm。
12.根据前述权利要求任一项所述的方法,其特征在于,氧化层(17)和/或覆盖层(19)具有大于2000℃的熔点,大于300 MPa的抗弯强度,大于2000 MPa的抗压强度和大于1600HV1的维氏硬度。
13.根据前述权利要求任一项所述的方法,其特征在于,起皮保护层(15)、氧化层(17)和任选的覆盖层(19) 在热处理步骤(II)之前施加到钢部件(1)的基材(3)上,并且在热处理步骤(II)过程中通过扩散过程在氧化层(17)下面形成其它相或层(5至15),特别是Al-Fe-Si相(7)、AI-FE区(9)、Al-Fe-Si-Mn区(11 )、Fe-Al-区(13)和氧化铝区。
14.根据前述权利要求任一项所述的方法,其中未达到所述材料的奥氏体化温度。
15.根据前述权利要求任一项所述的方法,其中仅部分地达到所述材料的奥氏体化温度。
16.根据前述权利要求任一项所述的方法,其中未达到或仅部分地达到用于形成所述材料的马氏体结构的临界冷却速度。
17.在根据前述权利要求任一项所述的方法中制造的钢部件,其中钢部件(1)在热处理步骤(II)中能够加热至完全或部分奥氏体化的程度,并且经加热的钢部件(1)在成形步骤(III)中既进行热成形也进行淬火硬化,其中在工艺技术上在热处理步骤(II)之前进行第一预处理步骤(la),其中能够形成具有耐腐蚀的起皮保护层(15)的钢部件(1)以避免在热处理步骤(II)中起皮,其特征在于,在钢部件(1)的起皮保护层(15)上形成反应惰性的耐腐蚀氧化层(17),借助该氧化层能够减少在成形步骤(III)中的磨蚀性工具磨损,并且在进行热处理步骤(II)之前在第二预处理步骤(Ib)中在表面氧化时能够产生氧化层(17)。
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DE102005059613A1 (de) * | 2005-12-12 | 2007-06-28 | Nano-X Gmbh | Beschichtungsmaterial für Substrate |
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DE102009007909A1 (de) * | 2009-02-06 | 2010-08-12 | Thyssenkrupp Steel Europe Ag | Verfahren zum Herstellen eines Stahlbauteils durch Warmformen und durch Warmformen hergestelltes Stahlbauteil |
DE102010022112A1 (de) * | 2010-05-20 | 2011-11-24 | Dechema Gesellschaft Für Chemische Technik Und Biotechnologie E.V. | Nanopartikelbasiertes Zunderschutzsystem |
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EP2848709B1 (de) * | 2013-09-13 | 2020-03-04 | ThyssenKrupp Steel Europe AG | Verfahren zum Herstellen eines mit einem metallischen, vor Korrosion schützenden Überzug versehenen Stahlbauteils und Stahlbauteil |
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JP2008223084A (ja) * | 2007-03-13 | 2008-09-25 | Nippon Steel Corp | 熱間プレス用Alめっき鋼板 |
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ES2815657T3 (es) | 2021-03-30 |
DE102015210459A1 (de) | 2016-12-08 |
KR102071920B1 (ko) | 2020-02-03 |
WO2016198186A1 (de) | 2016-12-15 |
EP3303641B1 (de) | 2020-06-17 |
KR20180017086A (ko) | 2018-02-20 |
DE102015210459B4 (de) | 2021-03-04 |
US10900110B2 (en) | 2021-01-26 |
EP3303641A1 (de) | 2018-04-11 |
US20180100224A1 (en) | 2018-04-12 |
CN107667182B (zh) | 2019-06-04 |
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