WO2017187255A1 - A press hardening method - Google Patents
A press hardening method Download PDFInfo
- Publication number
- WO2017187255A1 WO2017187255A1 PCT/IB2017/000482 IB2017000482W WO2017187255A1 WO 2017187255 A1 WO2017187255 A1 WO 2017187255A1 IB 2017000482 W IB2017000482 W IB 2017000482W WO 2017187255 A1 WO2017187255 A1 WO 2017187255A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coating
- press hardening
- barrier
- steel sheet
- carbon steel
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000000576 coating method Methods 0.000 claims abstract description 135
- 239000011248 coating agent Substances 0.000 claims abstract description 132
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 66
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 59
- 239000010962 carbon steel Substances 0.000 claims abstract description 59
- 239000011651 chromium Substances 0.000 claims abstract description 53
- 230000004888 barrier function Effects 0.000 claims abstract description 51
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 21
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 19
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 30
- 239000010959 steel Substances 0.000 claims description 30
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 239000010936 titanium Substances 0.000 claims description 15
- 239000011701 zinc Substances 0.000 claims description 13
- 238000007669 thermal treatment Methods 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 11
- 229910052725 zinc Inorganic materials 0.000 claims description 11
- 239000011572 manganese Substances 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 229910000734 martensite Inorganic materials 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 238000009792 diffusion process Methods 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 239000011247 coating layer Substances 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 229910052719 titanium Inorganic materials 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 229910001563 bainite Inorganic materials 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052796 boron Inorganic materials 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000005240 physical vapour deposition Methods 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 30
- 239000001257 hydrogen Substances 0.000 description 30
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 27
- 239000000203 mixture Substances 0.000 description 10
- 239000012535 impurity Substances 0.000 description 8
- 239000010410 layer Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 239000010955 niobium Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000005336 cracking Methods 0.000 description 6
- 230000003111 delayed effect Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 150000002431 hydrogen Chemical class 0.000 description 3
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- 238000000313 electron-beam-induced deposition Methods 0.000 description 2
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- 229910001098 inconels 690 Inorganic materials 0.000 description 2
- 238000001755 magnetron sputter deposition Methods 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- -1 niobium carbides Chemical class 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052720 vanadium Inorganic materials 0.000 description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- YZCKVEUIGOORGS-UHFFFAOYSA-N Hydrogen atom Chemical compound [H] YZCKVEUIGOORGS-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 229910000937 TWIP steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001912 gas jet deposition Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- 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
- C21D8/0405—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 of ferrous alloys
-
- 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
- B21D22/02—Stamping using rigid devices or tools
- B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
-
- 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
- B32B15/015—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 the said other metal being copper or nickel or an alloy thereof
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
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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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing Mn
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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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
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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
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
-
- 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
-
- 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
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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
- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/06—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material characterised by the coating material
- C23C14/14—Metallic material, boron or silicon
- C23C14/16—Metallic material, boron or silicon on metallic substrates or on substrates of boron or silicon
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- C—CHEMISTRY; METALLURGY
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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
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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
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- C23C2/12—Aluminium or alloys based thereon
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- C—CHEMISTRY; METALLURGY
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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
- C23C2/26—After-treatment
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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
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- C23C2/261—After-treatment in a gas atmosphere, e.g. inert or reducing atmosphere
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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
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- 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
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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
- 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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- 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
- C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
-
- 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
-
- 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
-
- 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
- C21D2211/008—Martensite
-
- 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
- C21D2251/00—Treating composite or clad material
- C21D2251/02—Clad material
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C18/00—Alloys based on zinc
- C22C18/04—Alloys based on zinc with aluminium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
-
- 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
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/10—Electroplating with more than one layer of the same or of different metals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- 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.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12785—Group IIB metal-base component
- Y10T428/12792—Zn-base component
- Y10T428/12799—Next to Fe-base component [e.g., galvanized]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- 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.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12937—Co- or Ni-base component next to Fe-base component
Definitions
- the present invention relates to a press hardening method comprising the provision of a carbon steel sheet coated with a barrier pre-coating which inhibits hydrogen adsorption and a part having excellent resistance to delayed cracking.
- the invention is particularly well suited for the manufacture of automotive vehicles.
- the patent application US2008035249 discloses a TWIP steel comprising at least one metal element chosen from vanadium, titanium, niobium, chromium and molybdenum, where 0.050% ⁇ V ⁇ 0.50%; 0.040% ⁇ Ti ⁇ 0.50%; 0.070% ⁇ Nb ⁇ 0.50%; 0.070% ⁇ Cr ⁇ 2%; 0.14% ⁇ Mo ⁇ 2% and, optionally, one or more elements chosen from 0.0005% ⁇ B ⁇ 0.003%; Ni ⁇ 1 % Cu ⁇ 5%, the balance of the composition consisting of iron and inevitable impurities resulting from the smelting, the amounts of metal elements in the form of precipitated carbides, nitrides or carbonitrides being: 0.030% ⁇ Vp ⁇ 0.150%; 0.030% Tip ⁇ 0.130%; 0.040% ⁇ Nbp ⁇ 0.220%; 0.070% ⁇ Crp ⁇ 0.6%; 0.14% ⁇ Mop ⁇ 0.44%.
- the inventors firstly demonstrated that precipitated vanadium, titanium or niobium carbides
- DE102010030465 discloses a method for the production of a sheet metal formed part which is provided with a corrosion protection coating and is formed from a high tensile steel sheet material. This method comprises the following steps:
- DE102010030465 further relates to a hot-formed and, in particular, press- hardened sheet-metal part (P) made of a high-tensile steel sheet material with an electrolytically applied zinc-nickel coating (C).
- P press- hardened sheet-metal part
- C electrolytically applied zinc-nickel coating
- the heat treatment serves to expel the hydrogen contained in the starting sheet material and the hydrogen (which is to be substantially prevented by the initially deposited thin nickel layer) which is possibly introduced during the application of the zinc- nickel coating in the steel sheet material.
- the heat treatment causes the hydrogen atoms embedded in the structure of the steel sheet material to be expelled by effusion. The hydrogen embrittlement of the steel sheet material is thus counteracted.
- the object of the invention is to provide a press hardening method wherein the hydrogen adsorption into the carbon steel sheet is prevented. It aims to make available a part having excellent resistance to delayed cracking obtainable by said press-hardening method including hot-forming.
- the steel sheet can also comprise characteristics of claims 2 to 24.
- the invention also covers a part according to claim 25.
- the part can also comprise characteristics of claim 26 or 27.
- the invention covers the use of such part for the manufacture of an automotive vehicle according to claim 28.
- carbon steel sheet means a steel sheet having less than 10.5% by weight of chromium.
- stainless steel is not included in the definition of a carbon steel sheet.
- any steel can be advantageously used in the frame of the invention.
- steel having high mechanical strength is needed, in particular for parts of structure of automotive vehicle, steel having a tensile resistance superior to 500MPa, advantageously between 500 and 2000MPa before or after heat- treatment, can be used.
- the weight composition of carbon steel sheet is preferably as follows: 0.03% ⁇ C ⁇ 0.50% ; 0.3% ⁇ Mn ⁇ 3.0% ; 0.05% ⁇ Si ⁇ 0.8% ; 0.015%
- the carbon steel sheet is 22MnB5 with the following composition: 0.20% ⁇ C ⁇ 0.25%; 0.15% ⁇ Si ⁇ 0.35%; 1.10% ⁇ Mn ⁇ 1.40%; 0% ⁇ Cr ⁇ 0.30%; 0% ⁇ Mo ⁇ 0.35%; 0% ⁇ P ⁇ 0.025%; 0% ⁇ S ⁇ 0.005%; 0.020% ⁇ Ti
- the carbon steel sheet can be Usibor®2000 with the following composition: 0.24% ⁇ C ⁇ 0.38%; 0.40% ⁇ Mn ⁇ 3%; 0.10% ⁇ Si ⁇ 0.70%; 0.015% ⁇ Al ⁇ 0.070%; 0 % ⁇ Cr ⁇ 2%; 0.25% ⁇ Ni ⁇ 2%; 0.020% ⁇ Ti ⁇ 0.10%; 0% ⁇ Nb ⁇ 0.060%; 0.0005% ⁇ B ⁇ 0.0040%; 0.003% ⁇ N ⁇ 0.010%; 0.0001 % ⁇ S ⁇ 0.005%; 0.0001 % ⁇ P ⁇ 0.025%; it being understood that the contents of titanium and nitrogen satisfy Ti/N > 3.42; and that the contents of carbon, manganese, chromium and silicon satisfy:
- the composition optionally comprising one or more of the following: 0.05% ⁇ Mo ⁇ 0.65%; 0.001 % ⁇ W ⁇ 0.30%; 0.0005% ⁇ Ca ⁇ 0.005%, the balance being iron and unavoidable impurities from the manufacture of steel.
- the Carbon steel sheet is Ductibor®500 with the following composition: 0.040% ⁇ C ⁇ 0.100%; 0.80% ⁇ Mn ⁇ 2.00%; 0% ⁇ Si ⁇ 0.30%; 0% ⁇ S ⁇ 0.005%; 0% ⁇ P ⁇ 0.030%; 0.010% ⁇ Al ⁇ 0.070%; 0.015% ⁇ Nb ⁇ 0.100%; 0.030% ⁇ Ti ⁇ 0.080%; 0% ⁇ N ⁇ 0.009%; 0% ⁇ Cu ⁇ 0.100%; 0% ⁇ Ni ⁇ 0.100%; 0% ⁇ Cr ⁇ 0.100%; 0% ⁇ Mo ⁇ 0.100%; 0% ⁇ Ca ⁇ 0.006%, the balance being iron and unavoidable impurities from the manufacture of steel.
- Carbon steel sheet can be obtained by hot rolling and optionally cold rolling depending on the desired thickness, which can be for example between 0.7 and 3.0mm.
- the invention relates to a press hardening method comprises the following steps:
- the barrier pre-coating comprises impurities chosen from Sr, Sb, Pb, Ti, Ca, Mn, Sn, La, Ce, Cr, Zr or Bi, the content by weight of each additional element being inferior to 0.3% by weight.
- the barrier pre-coating comprises from 55 to 90%, preferably from 70 to 90%, more preferably from 75 to 85% by weight of nickel.
- the barrier pre-coating comprises from 10 to 40%, preferably from 10 to 30% and advantageously from 15 to 25% of chromium.
- the barrier pre-coating does not comprise at least one of the elements chosen from Zn, B, N, Al and Mo. Indeed, without willing to be bound by any theory, there is a risk that the presence of at least one of these elements decreases the barrier effect of the coating.
- the barrier pre-coating consists of Cr and Ni, i.e. the barrier coating comprises only Ni and Cr and optional impurities.
- the barrier pre-coating has a thickness between 10 and 550 nm and more preferably between 10 and 90. In another preferred embodiment, the thickness is between 150 and 250 nm. For example, the thickness of the barrier coating is of 50 or 200nm.
- the carbon steel sheet can be directly topped by an anticorrosion pre-coating, this anticorrosion pre-coating layer being directly topped by the barrier pre-coating.
- the anticorrosion pre-coating comprises at least one of the metal selected from the group comprising zinc, aluminum, copper, magnesium, titanium, nickel, chromium, manganese and their alloys.
- the anticorrosion coating is based on aluminum or based on zinc.
- the anticorrosion pre-coating based on aluminum comprises less than 15% Si, less than 5.0% Fe, optionally 0.1 to 8.0% Mg and optionally 0.1 to 30.0% Zn, the remainder being Al.
- the anticorrosion coating is AluSi®.
- the anticorrosion pre-coating based on zinc comprises up to 0.3% Al, the remainder being Zn.
- the anticorrosion coating is a zinc coating so to obtain the following product: Usibor® Gl.
- the anticorrosion pre-coating can also comprise impurities and residual elements such iron with a content up to 5.0%, preferably 3.0%, by weight.
- the pre-coatings can be deposited by any methods known to the man skilled in the art, for example hot-dip galvanization process, roll coating, electrogalvanization process, physical vapor deposition such as jet vapor deposition, magnetron sputtering or electron beam induced deposition.
- the barrier pre-coating is deposited by electron beam induced deposition or roll coating.
- the coated carbon steel sheet is cut to obtain a blank.
- a thermal treatment is applied to the blank in a furnace.
- the thermal treatment is performed under non protective atmosphere or under protective atmosphere at a temperature between 800 and 950°C.
- the thermal treatment is performed at an austenitization temperature Tm usually between 840 and 950°C, preferably 880 to 930°C.
- said blank is maintained during a dwell time tm between 1 to 12 minutes, preferably between 3 to 9 minutes.
- the coating forms an alloy layer having a high resistance to corrosion, abrasion, wear and fatigue.
- the mechanism of absorption of hydrogen into steel is different from high temperature, in particular the austenitization treatment. Indeed, usually at high temperature, the water in the furnace dissociates at the surface of the steel sheet into hydrogen and oxygen. Without willing to be bound by any theory, it is believed that the barrier coating comprising nickel and chromium can prevent water dissociation at the barrier coating surface and also prevent the hydrogen diffusion through the coating.
- the blank is then transferred to a hot-forming tool and hot-formed at a temperature between 600 and 830°C.
- the hot-forming can be the hot-stamping or the roll-forming.
- the blank is hot-stamped.
- the part is then cooled in the hot-forming tool or after the transfer to a specific cooling tool.
- the cooling rate is controlled depending on the steel composition, in such a way that the final microstructure after the hot-forming comprises mostly martensite, preferably contains martensite, or martensite and bainite, or is made of at least 75% of equiaxed ferrite, from 5 to 20% of martensite and bainite in amount less than or equal to 10%.
- the part comprises a carbon steel sheet pre-coating with a barrier pre-coating comprising nickel and chromium, such barrier coating being alloyed through diffusion with the carbon steel sheet.
- a part comprises the carbon steel sheet directly topped by an anticorrosion pre-coating, this anticorrosion pre-coating layer being directly topped by the barrier pre-coating, such barrier coating being alloyed through diffusion with the anticorrosion coating, the anticorrosion coating being alloyed with the carbon steel sheet.
- the part is dipped in an e-coating bath.
- the thickness of the phosphate layer is between 1 and 2 pm and the thickness of the e-coating layer is between 15 and 25pm, preferably inferior or equal to 20pm.
- the cataphoresis layer ensures an additional protection against corrosion.
- paint layers can be deposited, for example, a primer coat of paint, a basecoat layer and a top coat layer.
- the part Before applying the e-coating on the part, the part is previously degreased and phosphated so as to ensure the adhesion of the cataphoresis.
- carbon steel sheets used are 22MnB5.
- AluSi® an anti- corrosion coating
- This coating comprises 9% by weight of Silicon, 3% by weight of iron, the balance being aluminum. It is deposited by hot-dip galvanization.
- Some carbon steel sheets are coated with a 2 nd coating deposited by magnetron sputtering.
- Example 1 hydrogen test:
- This test is used to determine the quantity of hydrogen adsorbed during the austenitization thermal treatment of a press hardening method.
- Trials 1 , 3 and 5 are naked carbon steel sheets, i.e. no coating is applied on the carbon steel sheet.
- Trials 2, 4 and 6 are carbon steel sheets coated with a coating comprising 80% of Ni and 20% of Cr.
- Trial 7 is a carbon steel sheet coated only with an AluSi® coating.
- Trial 8 is a carbon steel sheet coated with a 1 st coating being AluSi® and a 2 nd coating being WN.
- Trial 9 is a carbon steel sheet coated with 1 coating being AluSi® and a 2 nd coating being CrN.
- Trial 10 is a carbon steel sheet coated with a 1 st coating being AluSi® and a 2 nd coating comprising 40% of Ni and 60% of Cr.
- Trial 1 is a carbon steel sheet coated with a 1 st coating being AluSi® and a
- Trial 12 is a Carbon steel sheet coated with a 1 st coating being AluSi® and a 2 nd coating being Ti.
- Trial 13 is a carbon steel sheet coated with a 1 st coating being AluSi® and a 2 nd coating being Cr.
- Trial 14 is a carbon steel sheet coated with a 1 st coating being AluSi® and a 2 nd coating being Ag.
- Trial 15 is a carbon steel sheet coated with a 1 st coating being AluSi® and a 2 nd coating being Y.
- Trial 16 is a carbon steel sheet coated with a 1 st coating being AluSi® and a
- Trial 17 is a carbon steel sheet coated with a 1 st coating being AluSi® and a 2 nd coating being Au.
- Trial 18 is a carbon steel sheet coated with a 1 st coating being AluSi® and a 2 nd coating being W.
- Trial 19 is a carbon steel sheet coated with a 1 st coating being AluSi® and a 2 nd coating being Inox 316L.
- Inox 316L comprises 65% of Fe, 0.03% of C, 12% of Ni, 17% of Cr, 2% of Mn, 1% of Si and 2.5% of Mo.
- Trial 20 is a carbon steel sheet coated with 1 st coating being AluSi® and a 2 nd coating being Inconel 690.
- Inconel 690 comprises from 7 to 11 % by weight of Fe, 0.05% of C, from 57 to 65% of Ni, from 27 to 31 % of Cr, 0.05% of Mn and 0.5%Si.
- Trials 21 , 22 are carbon steel sheets coated with a 1 st coating being AluSi® and a 2 nd coating comprising 80% of Ni and 20% of Cr.
- Trials 7 to 22 have an AluSi® thickness of 25pm.
- Trial 23 is a carbon steel sheet coated with a 1 st coating being AluSi®.
- Trial 24 is a carbon steel sheet coated with a 1 st coating being AluSi® and a 2 nd coating being Ni.
- Trials 25 is carbon steel sheet coated with a 1 st coating being AluSi® and a 2 nd coating comprising 80% of Ni and 20% of Cr.
- Trials 23 to 25 have an AluSi® thickness of 14pm.
- coated trials were cut in order to obtain a blank. Blanks were then heated at a temperature of 900°C during a dwell time varying between 5 and 10 minutes. Blanks were transferred into a press tool and hot-stamped in order to obtain parts having an omega shape. Then, parts were cooled by dipping trials into warm water to obtain a hardening by martensitic transformation.
- trials 2, 4 and 6 comprising a barrier coating according to the present invention release less hydrogen amount with respect to the trials 1 , 3 and 5 without any barrier coating.
- trial 25 having a barrier coating according to the present invention releases less hydrogen than Trials 23 and 24, even when the thickness of AluSi® changes.
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- Chemical & Material Sciences (AREA)
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- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Heat Treatment Of Articles (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Laminated Bodies (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
Claims
Priority Applications (16)
Application Number | Priority Date | Filing Date | Title |
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RU2018141895A RU2710753C1 (en) | 2016-04-29 | 2017-04-26 | Method of hardening under press |
MX2018012954A MX2018012954A (en) | 2016-04-29 | 2017-04-26 | A press hardening method. |
JP2018556349A JP6937319B2 (en) | 2016-04-29 | 2017-04-26 | Press quenching method |
PL17729537T PL3449037T3 (en) | 2016-04-29 | 2017-04-26 | A press hardening method |
CN201780025788.3A CN109072450B (en) | 2016-04-29 | 2017-04-26 | Die quenching method |
CA3022671A CA3022671C (en) | 2016-04-29 | 2017-04-26 | A press hardening method |
UAA201811678A UA120686C2 (en) | 2016-04-29 | 2017-04-26 | A press hardening method |
EP17729537.5A EP3449037B1 (en) | 2016-04-29 | 2017-04-26 | A press hardening method |
KR1020197027436A KR102319215B1 (en) | 2016-04-29 | 2017-04-26 | A press hardening method |
MA44770A MA44770B1 (en) | 2016-04-29 | 2017-04-26 | Press quench hardening process |
US16/097,466 US20190144963A1 (en) | 2016-04-29 | 2017-04-26 | A press hardening method |
EP19212251.3A EP3633068B1 (en) | 2016-04-29 | 2017-04-26 | Carbon steel sheet coated with a barrier coating |
BR112018071252-3A BR112018071252B1 (en) | 2016-04-29 | 2017-04-26 | METHOD FOR HARDENING IN PRESS, PIECE AND ONE-PIECE USE |
ES17729537T ES2790077T3 (en) | 2016-04-29 | 2017-04-26 | A pressure hardening procedure |
KR1020187031173A KR102025538B1 (en) | 2016-04-29 | 2017-04-26 | Press hardening method |
PL19212251T PL3633068T3 (en) | 2016-04-29 | 2017-04-26 | Carbon steel sheet coated with a barrier coating |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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IBPCT/IB2016/000549 | 2016-04-29 | ||
PCT/IB2016/000549 WO2017187215A1 (en) | 2016-04-29 | 2016-04-29 | Carbon steel sheet coated with a barrier coating |
Publications (1)
Publication Number | Publication Date |
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WO2017187255A1 true WO2017187255A1 (en) | 2017-11-02 |
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PCT/IB2016/000549 WO2017187215A1 (en) | 2016-04-29 | 2016-04-29 | Carbon steel sheet coated with a barrier coating |
PCT/IB2017/000482 WO2017187255A1 (en) | 2016-04-29 | 2017-04-26 | A press hardening method |
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PCT/IB2016/000549 WO2017187215A1 (en) | 2016-04-29 | 2016-04-29 | Carbon steel sheet coated with a barrier coating |
Country Status (14)
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US (1) | US20190144963A1 (en) |
EP (2) | EP3633068B1 (en) |
JP (1) | JP6937319B2 (en) |
KR (2) | KR102319215B1 (en) |
CN (1) | CN109072450B (en) |
CA (1) | CA3022671C (en) |
ES (2) | ES2878190T3 (en) |
HU (2) | HUE056003T2 (en) |
MA (2) | MA44770B1 (en) |
MX (1) | MX2018012954A (en) |
PL (2) | PL3449037T3 (en) |
RU (2) | RU2724752C2 (en) |
UA (1) | UA120686C2 (en) |
WO (2) | WO2017187215A1 (en) |
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WO2020070575A1 (en) | 2018-10-04 | 2020-04-09 | Arcelormittal | A press hardening method |
WO2021084378A1 (en) | 2019-10-30 | 2021-05-06 | Arcelormittal | A press hardening method |
WO2021230311A1 (en) | 2020-05-13 | 2021-11-18 | 日本製鉄株式会社 | Steel sheet for hot stamping |
WO2021230306A1 (en) | 2020-05-13 | 2021-11-18 | 日本製鉄株式会社 | Hot stamp member |
WO2021230309A1 (en) | 2020-05-13 | 2021-11-18 | 日本製鉄株式会社 | Steel sheet for hot stamping |
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CN111936659B (en) | 2018-03-28 | 2022-12-27 | 杰富意钢铁株式会社 | High-strength alloyed hot-dip galvanized steel sheet and method for producing same |
WO2021084305A1 (en) * | 2019-10-30 | 2021-05-06 | Arcelormittal | A press hardening method |
WO2021084303A1 (en) * | 2019-10-30 | 2021-05-06 | Arcelormittal | A press hardening method |
WO2021084302A1 (en) * | 2019-10-30 | 2021-05-06 | Arcelormittal | A press hardening method |
WO2021130524A1 (en) * | 2019-12-24 | 2021-07-01 | Arcelormittal | Pre-coated steel sheet comprising an additional coating for increasing the mechanical strength of the weld metal zone of a welded steel part prepared from said pre-coated sheet |
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KR102025538B1 (en) | 2019-09-26 |
RU2019140880A (en) | 2020-01-27 |
EP3633068B1 (en) | 2021-06-02 |
MA48817B1 (en) | 2021-06-30 |
UA120686C2 (en) | 2020-01-10 |
JP2019518136A (en) | 2019-06-27 |
RU2019140880A3 (en) | 2020-06-03 |
EP3449037B1 (en) | 2020-03-25 |
HUE056003T2 (en) | 2022-01-28 |
HUE049609T2 (en) | 2020-09-28 |
RU2710753C1 (en) | 2020-01-13 |
KR20190111146A (en) | 2019-10-01 |
US20190144963A1 (en) | 2019-05-16 |
WO2017187215A1 (en) | 2017-11-02 |
RU2724752C2 (en) | 2020-06-25 |
KR20180122731A (en) | 2018-11-13 |
EP3633068A1 (en) | 2020-04-08 |
CN109072450A (en) | 2018-12-21 |
KR102319215B1 (en) | 2021-10-29 |
MA48817A (en) | 2020-04-08 |
PL3633068T3 (en) | 2021-11-08 |
ES2790077T3 (en) | 2020-10-27 |
EP3449037A1 (en) | 2019-03-06 |
MX2018012954A (en) | 2019-03-28 |
CA3022671C (en) | 2020-08-11 |
CN109072450B (en) | 2020-11-20 |
MA44770B1 (en) | 2020-05-29 |
BR112018071252A2 (en) | 2019-02-05 |
PL3449037T3 (en) | 2020-09-21 |
CA3022671A1 (en) | 2017-11-02 |
JP6937319B2 (en) | 2021-09-22 |
ES2878190T3 (en) | 2021-11-18 |
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