CA3159490A1 - Thermoformed component having excellent coating adhesion, and manufacturing method therefor - Google Patents
Thermoformed component having excellent coating adhesion, and manufacturing method therefor Download PDFInfo
- Publication number
- CA3159490A1 CA3159490A1 CA3159490A CA3159490A CA3159490A1 CA 3159490 A1 CA3159490 A1 CA 3159490A1 CA 3159490 A CA3159490 A CA 3159490A CA 3159490 A CA3159490 A CA 3159490A CA 3159490 A1 CA3159490 A1 CA 3159490A1
- Authority
- CA
- Canada
- Prior art keywords
- coating adhesion
- component
- excellent coating
- thermoformed component
- blank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011248 coating agent Substances 0.000 title claims abstract description 145
- 238000000576 coating method Methods 0.000 title claims abstract description 145
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 88
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 60
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000000758 substrate Substances 0.000 claims abstract description 37
- 238000001816 cooling Methods 0.000 claims abstract description 24
- 238000005520 cutting process Methods 0.000 claims abstract description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 35
- 238000009792 diffusion process Methods 0.000 claims description 27
- 229910052742 iron Inorganic materials 0.000 claims description 26
- 239000012535 impurity Substances 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 23
- 230000003746 surface roughness Effects 0.000 claims description 22
- 229910052729 chemical element Inorganic materials 0.000 claims description 15
- 239000000126 substance Substances 0.000 claims description 12
- 229910052725 zinc Inorganic materials 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 229910045601 alloy Inorganic materials 0.000 claims description 10
- 239000000956 alloy Substances 0.000 claims description 10
- 229910000734 martensite Inorganic materials 0.000 claims description 10
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 8
- 229910052804 chromium Inorganic materials 0.000 claims description 7
- 229910052748 manganese Inorganic materials 0.000 claims description 7
- 229910052698 phosphorus Inorganic materials 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 229910052717 sulfur Inorganic materials 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 229910015372 FeAl Inorganic materials 0.000 claims description 5
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- 229910052720 vanadium Inorganic materials 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000004321 preservation Methods 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching effect Effects 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 3
- 229910021328 Fe2Al5 Inorganic materials 0.000 claims 2
- 229910000831 Steel Inorganic materials 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- 229910000838 Al alloy Inorganic materials 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 12
- 239000000203 mixture Substances 0.000 description 11
- 239000011701 zinc Substances 0.000 description 9
- 230000003014 reinforcing effect Effects 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000003856 thermoforming Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000001962 electrophoresis Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000713 I alloy Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000013072 incoming material Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005480 shot peening Methods 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 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
- C21D8/0278—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
- 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
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D6/002—Heat treatment of ferrous alloys containing Cr
-
- 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
-
- 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
-
- 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
- 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
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips 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
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0242—Flattening; Dressing; Flexing
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
-
- 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
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
-
- 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
- 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
-
- C—CHEMISTRY; METALLURGY
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
-
- 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
- C23C2/34—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
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
-
- 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
- C23C2/34—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
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
- C23C2/405—Plates of specific length
-
- 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
- C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates
-
- 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
-
- 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
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent 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
- 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
-
- 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
- C21D2261/00—Machining or cutting being involved
Abstract
A thermoformed component having excellent coating adhesion. The thermoformed component comprises a substrate layer and an aluminum coating coated on at least one surface of the substrate layer. The average roughness Ra of a surface of the thermoformed component is between 1.0 ?m and 3.0 ?m, the peak height and the peak-to-valley height Rt are between 8 ?m and 30 ?m, and the roughness peak count Rpc is greater than or equal to 50. A manufacturing method for the thermoformed component having excellent coating adhesion comprises the following steps: (1) immersing a substrate in an aluminum coating solution to obtain a plate having an aluminum coating on a surface thereof; (2) performing leveling; (3) performing blanking on the plate or cutting the plate so as to obtain a blank having a required component shape; (4) performing heat treatment; and (5) performing transfer processing and hot stamping, wherein the heated blank is quickly transferred to a mold for cooling and stamping, so as to form a thermoformed component.
Description
THERMOFORMED COMPONENT HAVING EXCELLENT COATING ADHESION, AND MANUFACTURING METHOD THEREFOR
TECHNICAL FIELD
The present disclosure relates to a material and a manufacturing method therefor, and particularly relates to a thermoformed material and a manufacturing method therefor.
BACKGROUND ART
In recent years, the application of thermoformed component in automobile industry has become very important. Especially, with respect to safety structural parts of automobile, it has irreplaceable advantages in some parts with high strength and complex shape.
The materials used for thermoformed components are divided into those with coating and those without coating. The main purpose of the coating is to prevent the oxidation of the steel plate surface during the hot stamping process. The formed components can be directly coated and welded for use. At present, the materials without coating must be subject to surface shot peening after thermoforming to remove the oxide layer generated on the surface, otherwise it will affect the subsequent coating and welding of parts. The surface of materials hot-dipped with aluminum coating cannot be phosphated normally after thermoforrning. The adhesion of paint film after electrophoresis depends entirely on the surface morphology of the coating. During the use of existing materials, there will be the problem that the coating adhesion can not meet the use.
For example, the Chinese patent document with the publication number of and the publication date of May 27, 2015, entitled "process for manufacturing stamped products, and stamped products prepared from the same" discloses a thermoforming material coated with aluminum or aluminum alloy and its manufacturing method. The method specifically controls the thickness and five-layer structure of the coating to ensure the welding performance of thermoformed component.
For another example, the Chinese patent document with the publication number of CN108588612A and the publication date of September 28, 2018, entitled "hot-stamping forming component, pre-coating steel-plating plate for hot-stamping forming, and hot-stamping forming process" discloses a hot-stamping formed component. In the technical solution disclosed in the patent document, the thickness of the coating is reduced and the protective effect of the coating is also reduced. Therefore, the fluctuation of the thermoforming process is easy to affect the surface performance of the component, thus affecting the subsequent service performance.
For another example, the Chinese patent document with the publication number of CN101583486 and the publication date of November 18, 2009, entitled "coated steel strip, methods of making the same, methods of using the same, stamping blanks prepared from the same, stamped products prepared from the same, and articles comprising such stamped products"
discloses a hot stamped product of coated steel strip and a method. The technical solution disclosed in the patent document includes heating, transferring and cooling, but does not involve the hot stamping process, which will lead to the unstable quality of stamped products, such as shrinkage and cracking. The furnace atmosphere during the heating process is not controlled, which leads to the change of furnace atmosphere during the heating, especially the large change of oxygen content, which makes the appearance color of products easy to change. In the actual production, it is found that the appearance color of stamped products obtained from the same incoming materials under the same process is quite different.
SUMMARY OF INVENTION
An object of the present disclosure is to provide a thermoformed component having excellent coating adhesion. The thermoformed component has good paintability, good coating adhesion and good corrosion resistance, and is very suitable for automotive parts, such as front and rear doors, left and right anti-collision rods/beams, front and rear bumpers, A-pillar reinforcing plates, B-pillar reinforcing plates, floor middle channels, etc.
To achieve the above object, the present disclosure provides a thermoformed component having excellent coating adhesion, comprising a substrate layer and an aluminum coating coated on at least one surface of the substrate layer, wherein the average roughness Ra of a surface of the thermoformed component is between 1.0 um and 3.0 gm, the peak-to-valley height Rt is between 8 pm and 30 gm, and the roughness peak count Rpc is greater than or equal to 50.
In the technical solution of the present disclosure, the aluminum coating comprises aluminum phase and aluminum silicon phase. In the heating process, the aluminum in the aluminum coating diffuses to the substrate layer, and the iron in the substrate layer diffuses to the aluminum coating to form Al8Fe2Si phase. The formation of new phase leads to a significant increase in surface roughness. With the further diffusion of iron and aluminum, Fe2A15 phase is formed, and the surface roughness is basically maintained. Finally, FeAl alloy is completely formed in the aluminum coating, while the surface roughness decreases slightly.
The surface of thermoformed components after heat treatment mainly consists of Fe2A15 and FeAI alloy. At the same time, because the silicon oxide, aluminum oxide and iron oxide produced by surface oxidation cannot react with phosphating solution, that is, normal phosphating coating
TECHNICAL FIELD
The present disclosure relates to a material and a manufacturing method therefor, and particularly relates to a thermoformed material and a manufacturing method therefor.
BACKGROUND ART
In recent years, the application of thermoformed component in automobile industry has become very important. Especially, with respect to safety structural parts of automobile, it has irreplaceable advantages in some parts with high strength and complex shape.
The materials used for thermoformed components are divided into those with coating and those without coating. The main purpose of the coating is to prevent the oxidation of the steel plate surface during the hot stamping process. The formed components can be directly coated and welded for use. At present, the materials without coating must be subject to surface shot peening after thermoforming to remove the oxide layer generated on the surface, otherwise it will affect the subsequent coating and welding of parts. The surface of materials hot-dipped with aluminum coating cannot be phosphated normally after thermoforrning. The adhesion of paint film after electrophoresis depends entirely on the surface morphology of the coating. During the use of existing materials, there will be the problem that the coating adhesion can not meet the use.
For example, the Chinese patent document with the publication number of and the publication date of May 27, 2015, entitled "process for manufacturing stamped products, and stamped products prepared from the same" discloses a thermoforming material coated with aluminum or aluminum alloy and its manufacturing method. The method specifically controls the thickness and five-layer structure of the coating to ensure the welding performance of thermoformed component.
For another example, the Chinese patent document with the publication number of CN108588612A and the publication date of September 28, 2018, entitled "hot-stamping forming component, pre-coating steel-plating plate for hot-stamping forming, and hot-stamping forming process" discloses a hot-stamping formed component. In the technical solution disclosed in the patent document, the thickness of the coating is reduced and the protective effect of the coating is also reduced. Therefore, the fluctuation of the thermoforming process is easy to affect the surface performance of the component, thus affecting the subsequent service performance.
For another example, the Chinese patent document with the publication number of CN101583486 and the publication date of November 18, 2009, entitled "coated steel strip, methods of making the same, methods of using the same, stamping blanks prepared from the same, stamped products prepared from the same, and articles comprising such stamped products"
discloses a hot stamped product of coated steel strip and a method. The technical solution disclosed in the patent document includes heating, transferring and cooling, but does not involve the hot stamping process, which will lead to the unstable quality of stamped products, such as shrinkage and cracking. The furnace atmosphere during the heating process is not controlled, which leads to the change of furnace atmosphere during the heating, especially the large change of oxygen content, which makes the appearance color of products easy to change. In the actual production, it is found that the appearance color of stamped products obtained from the same incoming materials under the same process is quite different.
SUMMARY OF INVENTION
An object of the present disclosure is to provide a thermoformed component having excellent coating adhesion. The thermoformed component has good paintability, good coating adhesion and good corrosion resistance, and is very suitable for automotive parts, such as front and rear doors, left and right anti-collision rods/beams, front and rear bumpers, A-pillar reinforcing plates, B-pillar reinforcing plates, floor middle channels, etc.
To achieve the above object, the present disclosure provides a thermoformed component having excellent coating adhesion, comprising a substrate layer and an aluminum coating coated on at least one surface of the substrate layer, wherein the average roughness Ra of a surface of the thermoformed component is between 1.0 um and 3.0 gm, the peak-to-valley height Rt is between 8 pm and 30 gm, and the roughness peak count Rpc is greater than or equal to 50.
In the technical solution of the present disclosure, the aluminum coating comprises aluminum phase and aluminum silicon phase. In the heating process, the aluminum in the aluminum coating diffuses to the substrate layer, and the iron in the substrate layer diffuses to the aluminum coating to form Al8Fe2Si phase. The formation of new phase leads to a significant increase in surface roughness. With the further diffusion of iron and aluminum, Fe2A15 phase is formed, and the surface roughness is basically maintained. Finally, FeAl alloy is completely formed in the aluminum coating, while the surface roughness decreases slightly.
The surface of thermoformed components after heat treatment mainly consists of Fe2A15 and FeAI alloy. At the same time, because the silicon oxide, aluminum oxide and iron oxide produced by surface oxidation cannot react with phosphating solution, that is, normal phosphating coating
2 cannot be formed, the coating adhesion of thermoformed components is completely guaranteed by the uneven structure of the surface, that is, the roughness of thermoforrned components has an important impact on the coating adhesion.
The greater the surface roughness of the aluminum coating, the greater the roughness peak count Rpc value, the different diffusion paths of iron and aluminum, and the different speed of the formation of new phase, resulting in the greater the surface roughness of the formed components after heat treatment and the better the coating adhesion.
Further, in the themnofornned component having excellent coating adhesion of the present disclosure, the aluminum coating comprises a diffusion layer adjacent to the substrate layer and an alloy layer on the surface of the aluminum coating, wherein the ratio of the thickness of the diffusion layer to the total thickness of the aluminum coating is 0.08-0.5.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the thickness of the diffusion layer is < 16 ).tm; the total thickness of the aluminum coating is < 60 inn.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the thickness of the diffusion layer is 5-16 pm; the total thickness of the aluminum coating is 20-60 iim.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the average roughness Ra of the surface of the thermoformed component is 1.5-2.5 tim.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the peak-to-valley height Rt of the surface of the thermoformed component is 10-25 Pm-Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the roughness peak count Rpc of the surface of the thermoformed component is 50-250, such as 80-180.
Further, the surface of the thermoformed component having excellent coating adhesion of the present disclosure comprises Fe2A15 and FeAl alloy. Further, the surface of the thermoformed component having excellent coating adhesion of the present disclosure also comprises silicon oxide, aluminum oxide and iron oxide. Further, the surface of the therrnoformed component having excellent coating adhesion of the present disclosure mainly consists of Fe2A15 and FeA I
alloy, and also comprises silicon oxide, aluminum oxide and iron oxide. Also, the content of Fe2A15 in the surface of the thermoformed component having excellent coating adhesion of the present disclosure is higher than 40wt%.
The greater the surface roughness of the aluminum coating, the greater the roughness peak count Rpc value, the different diffusion paths of iron and aluminum, and the different speed of the formation of new phase, resulting in the greater the surface roughness of the formed components after heat treatment and the better the coating adhesion.
Further, in the themnofornned component having excellent coating adhesion of the present disclosure, the aluminum coating comprises a diffusion layer adjacent to the substrate layer and an alloy layer on the surface of the aluminum coating, wherein the ratio of the thickness of the diffusion layer to the total thickness of the aluminum coating is 0.08-0.5.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the thickness of the diffusion layer is < 16 ).tm; the total thickness of the aluminum coating is < 60 inn.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the thickness of the diffusion layer is 5-16 pm; the total thickness of the aluminum coating is 20-60 iim.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the average roughness Ra of the surface of the thermoformed component is 1.5-2.5 tim.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the peak-to-valley height Rt of the surface of the thermoformed component is 10-25 Pm-Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the roughness peak count Rpc of the surface of the thermoformed component is 50-250, such as 80-180.
Further, the surface of the thermoformed component having excellent coating adhesion of the present disclosure comprises Fe2A15 and FeAl alloy. Further, the surface of the thermoformed component having excellent coating adhesion of the present disclosure also comprises silicon oxide, aluminum oxide and iron oxide. Further, the surface of the therrnoformed component having excellent coating adhesion of the present disclosure mainly consists of Fe2A15 and FeA I
alloy, and also comprises silicon oxide, aluminum oxide and iron oxide. Also, the content of Fe2A15 in the surface of the thermoformed component having excellent coating adhesion of the present disclosure is higher than 40wt%.
3 Further, in the surface of the thermoformed component having excellent coating adhesion of the present disclosure, the mass percentage of chemical elements of the aluminum coating is: Si:
4-14%, Fe: 0-4%, Mg: 0-10%, Zn: 0-20%, and a balance of Al and other unavoidable impurities.
Further, in the surface of the thermoformed component having excellent coating adhesion of the present disclosure, the mass percentage of chemical elements of the aluminum coating is: Si:
4-14%, Fe: 2-4%, Mg: 0-10%, Zn: 0-20%, and a balance of Al and other unavoidable impurities.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the average weight of the aluminum coating is 20-120 g/m2 per single surface.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the average weight of the aluminum coating is 30-100 g/m2 per single surface.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the mass percentage of chemical elements of the substrate layer is:
C: 0.01-0.8%, Si: 0.05-1.0%, Mn: 0.1-5%, P<0.3%, S<0.1%, A1<0.3%, Ti<0.5%, B:
0.0005-0.1%, Cr: 0.01-3%, Nb<0.5%, V<0.5%, and a balance of Fe and other unavoidable impurities.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the mass percentage of chemical elements of the substrate layer further meets at least one of the following:
C: 0.05-0.6%, Si: 0.07-0.8%, Mn: 0.3-4%, P<0.2%, S<0.08%, Al<0.2%, Ti<0.4%, B: 0.0005-0.08%, Cr: 0.01-2%, Nb<0.3%, V<0.3%.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the mass percentage of chemical elements of the substrate layer further meets at least one of the following:
C: 0.15-0.5%, Si: 0.1-0.5%, Mn: 0.5-3%, P<0.1%, S<0.05%, A10. 1%, Ti<0.2%, Cr: 0.01-1%.
Further, in the substrate layer of the thermoformed component having excellent coating adhesion of the present disclosure, the content of Al is 0.03-0.09%, and the content of Ti is 0.01-0.2%, preferably 0,01-0.1%.
Further, in the substrate layer of the thermoformed component having excellent coating adhesion of the present disclosure, the content of Cr is 0.1-0.8%.
Further, in the substrate layer of the thermoformed component having excellent coating adhesion of the present disclosure, when Nb is comprised, the content of Nb is 0.001-0.1%, when V is comprised, the content of V is 0.001-0.01%.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the mass percentage of chemical elements of the substrate layer is: C: 0.02-0.8%, Si:
0.05-0.5%, Mn: 0.1-3%, P<0.1%, S<0.05%, Al: 0.04-0.09%, Ti: 0.02-0.2%, B:
0.0005-0.09%, Cr: 0.15-0.8%, Nb: 0% or 0.001-0.1%, V: 0% or 0.002-0.008%, and a balance of Fe and other unavoidable impurities.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the yield strength is 400-1400 M Pa, the tensile strength is 500-2100 MPa, and the elongation is >4%.
Preferably, in the microstructure of the substrate of the thermoformed component having excellent coating adhesion of the present disclosure, the volume percentage of martensite is >70%, preferably >85%, more preferably >95%.
Accordingly, another object of the present disclosure is to provide a manufacturing method for the above thermoformed component having excellent coating adhesion, and through the manufacturing method, thermoformed component having excellent coating adhesion can be obtained.
To achieve the above object, the present disclosure provides a manufacturing method for the above thermoformed component having excellent coating adhesion, comprising the following steps:
(1) immersing a substrate in an aluminum coating solution to obtain a plate having an aluminum coating on a surface thereof;
(2) leveling: using a leveling roller having a roughness Ra of 0.5-3.0 Inn to level the plate, and controlling the leveling elongation <2.0%, so that the surface thermal radiation coefficient of the plate is 0.1-0.8, the surface roughness Ra of the plate is 0.3-2.0 pm, and the peak roughness count RPC of the surface of the plate is 30-150;
(3) blanking: performing blanking on the plate or cutting the plate to obtain a blank having a required component shape;
(4) heat treatment: putting the blank into a heating furnace for heating and heat preservation, wherein the temperature of the heating furnace is 880-960 C, the atmosphere in the heating furnace is air or nitrogen, and the residence time of the blank in the heating furnace is 2.5-10 min;
Further, in the surface of the thermoformed component having excellent coating adhesion of the present disclosure, the mass percentage of chemical elements of the aluminum coating is: Si:
4-14%, Fe: 2-4%, Mg: 0-10%, Zn: 0-20%, and a balance of Al and other unavoidable impurities.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the average weight of the aluminum coating is 20-120 g/m2 per single surface.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the average weight of the aluminum coating is 30-100 g/m2 per single surface.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the mass percentage of chemical elements of the substrate layer is:
C: 0.01-0.8%, Si: 0.05-1.0%, Mn: 0.1-5%, P<0.3%, S<0.1%, A1<0.3%, Ti<0.5%, B:
0.0005-0.1%, Cr: 0.01-3%, Nb<0.5%, V<0.5%, and a balance of Fe and other unavoidable impurities.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the mass percentage of chemical elements of the substrate layer further meets at least one of the following:
C: 0.05-0.6%, Si: 0.07-0.8%, Mn: 0.3-4%, P<0.2%, S<0.08%, Al<0.2%, Ti<0.4%, B: 0.0005-0.08%, Cr: 0.01-2%, Nb<0.3%, V<0.3%.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the mass percentage of chemical elements of the substrate layer further meets at least one of the following:
C: 0.15-0.5%, Si: 0.1-0.5%, Mn: 0.5-3%, P<0.1%, S<0.05%, A10. 1%, Ti<0.2%, Cr: 0.01-1%.
Further, in the substrate layer of the thermoformed component having excellent coating adhesion of the present disclosure, the content of Al is 0.03-0.09%, and the content of Ti is 0.01-0.2%, preferably 0,01-0.1%.
Further, in the substrate layer of the thermoformed component having excellent coating adhesion of the present disclosure, the content of Cr is 0.1-0.8%.
Further, in the substrate layer of the thermoformed component having excellent coating adhesion of the present disclosure, when Nb is comprised, the content of Nb is 0.001-0.1%, when V is comprised, the content of V is 0.001-0.01%.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the mass percentage of chemical elements of the substrate layer is: C: 0.02-0.8%, Si:
0.05-0.5%, Mn: 0.1-3%, P<0.1%, S<0.05%, Al: 0.04-0.09%, Ti: 0.02-0.2%, B:
0.0005-0.09%, Cr: 0.15-0.8%, Nb: 0% or 0.001-0.1%, V: 0% or 0.002-0.008%, and a balance of Fe and other unavoidable impurities.
Further, in the thermoformed component having excellent coating adhesion of the present disclosure, the yield strength is 400-1400 M Pa, the tensile strength is 500-2100 MPa, and the elongation is >4%.
Preferably, in the microstructure of the substrate of the thermoformed component having excellent coating adhesion of the present disclosure, the volume percentage of martensite is >70%, preferably >85%, more preferably >95%.
Accordingly, another object of the present disclosure is to provide a manufacturing method for the above thermoformed component having excellent coating adhesion, and through the manufacturing method, thermoformed component having excellent coating adhesion can be obtained.
To achieve the above object, the present disclosure provides a manufacturing method for the above thermoformed component having excellent coating adhesion, comprising the following steps:
(1) immersing a substrate in an aluminum coating solution to obtain a plate having an aluminum coating on a surface thereof;
(2) leveling: using a leveling roller having a roughness Ra of 0.5-3.0 Inn to level the plate, and controlling the leveling elongation <2.0%, so that the surface thermal radiation coefficient of the plate is 0.1-0.8, the surface roughness Ra of the plate is 0.3-2.0 pm, and the peak roughness count RPC of the surface of the plate is 30-150;
(3) blanking: performing blanking on the plate or cutting the plate to obtain a blank having a required component shape;
(4) heat treatment: putting the blank into a heating furnace for heating and heat preservation, wherein the temperature of the heating furnace is 880-960 C, the atmosphere in the heating furnace is air or nitrogen, and the residence time of the blank in the heating furnace is 2.5-10 min;
(5) transferring and hot stamping: quickly transferring the heated blank to a mold for cooling and stamping forming to form a thermoformed component.
In the manufacturing method of the present disclosure, in step (4), too low temperature of the heating furnace or too short residence time of the blank in the heating furnace will lead to insufficient diffusion of iron and aluminum, resulting in too low surface roughness and affecting the roughness of the final thermoformed component. If the temperature of the heating furnace is too high or the residence time of the blank in the heating furnace is too long, it will lead to excessive diffusion of iron and aluminum and complete formation of FeAl alloy, which will also reduce the roughness of the final thermoformed component. At the same time, the holes formed by element migration in the diffusion process will affect the surface conductivity, and cause shrinkage in the electrophoresis process, which will affect the paintability.
Further, in the manufacturing method of the present disclosure, in step (1), the mass percentage of chemical elements of the aluminum coating solution is: Si: 5-11%, Fe: 2-4%, Zn:
0-15%, Mg: 0-8%, and a balance ofAl and other unavoidable impurities.
Further, in the manufacturing method of the present disclosure, in step (1), the mass percentage of chemical elements of the aluminum coating solution is: Si: 8-11%, Fe: 2-4%, Zn:
0-11%, Mg: 0-8%, and a balance of Al and other unavoidable impurities.
Further, in the manufacturing method of the present disclosure, in step (1), the mass percentage of chemical elements of the aluminum coating solution is: Si: 5-11%, Fe: 2-4%, and a balance ofAl and other unavoidable impurities.
Further, in the manufacturing method of the present disclosure, in step (1), the mass percentage of chemical elements of the aluminum coating solution is: Si: 5-11%, Fe: 2-4%, optional Zn: 2-15%, optional Mg: 0.5-8%, and a balance of Al and other unavoidable impurities.
In the manufacturing method of the present disclosure, in step (4), too low temperature of the heating furnace or too short residence time of the blank in the heating furnace will lead to insufficient diffusion of iron and aluminum, resulting in too low surface roughness and affecting the roughness of the final thermoformed component. If the temperature of the heating furnace is too high or the residence time of the blank in the heating furnace is too long, it will lead to excessive diffusion of iron and aluminum and complete formation of FeAl alloy, which will also reduce the roughness of the final thermoformed component. At the same time, the holes formed by element migration in the diffusion process will affect the surface conductivity, and cause shrinkage in the electrophoresis process, which will affect the paintability.
Further, in the manufacturing method of the present disclosure, in step (1), the mass percentage of chemical elements of the aluminum coating solution is: Si: 5-11%, Fe: 2-4%, Zn:
0-15%, Mg: 0-8%, and a balance ofAl and other unavoidable impurities.
Further, in the manufacturing method of the present disclosure, in step (1), the mass percentage of chemical elements of the aluminum coating solution is: Si: 8-11%, Fe: 2-4%, Zn:
0-11%, Mg: 0-8%, and a balance of Al and other unavoidable impurities.
Further, in the manufacturing method of the present disclosure, in step (1), the mass percentage of chemical elements of the aluminum coating solution is: Si: 5-11%, Fe: 2-4%, and a balance ofAl and other unavoidable impurities.
Further, in the manufacturing method of the present disclosure, in step (1), the mass percentage of chemical elements of the aluminum coating solution is: Si: 5-11%, Fe: 2-4%, optional Zn: 2-15%, optional Mg: 0.5-8%, and a balance of Al and other unavoidable impurities.
6 Further, in the manufacturing method of the present disclosure, in step (4), during the heating up process of blank heating, the heating rate does not exceed 10 C/s in the range of heating up to 400-600 C to pre-alloy zinc and aluminum in the coating and avoid damage or crack of the coating.
Further, in the manufacturing method of the present disclosure, in step (5), the blank is transferred to the mold within 20 seconds.
Further, in the manufacturing method of the present disclosure, in the hot stamping process of step (5), after the mold is closed, a pressure holding quenching is continued for 4-20 s, and the pressure holding pressure applied to the blank surface is >8 MPa. In some embodiments, the pressure holding pressure is 10-20 M Pa.
Further, in the manufacturing method of the present disclosure, in step (5), the material of the mold meets the following requirement: the thermal diffusion coefficient at 700 C is greater than 3.8 nrinn2/s.
Further, in the manufacturing method of the present disclosure, in step (5), during stamping, the closing speed of the mold is 30-150 mm/s, so that the thermoformed component can ensure good forming performance and reduce stamping defects, such as cracking and necking.
Further, in the manufacturing method of the present disclosure, in step (5), the blank is cooled to 50-200 C at a cooling rate of 30-150 C/s to change the internal structure of the thermoformed component into the required structure, and ensure that the thermoformed component still maintains a good size and shape during the cooling process.
The present disclosure also includes a thermofornned component manufactured by the above method.
Compared with the prior art, the thermoformed component having excellent coating adhesion and its method have the following advantages and beneficial effects:
The thermoformed component having excellent coating adhesion of the present disclosure has good paintability, good coating adhesion and good corrosion resistance, and is very suitable for automotive parts, such as front and rear doors, left and right anti-collision rods/beams, front and rear bumpers, A-pillar reinforcing plates, B-pillar reinforcing plates, floor middle channels, etc.
In addition, the manufacturing method of the present disclosure also has the above advantages and beneficial effects.
DETAILED DESCRIPTION
The thermoformed component having excellent coating adhesion of the present disclosure and its manufacturing method will be further explained and illustrated with reference to specific examples. Nonetheless, the explanation and illustration are not intended to unduly limit the technical solution of the present disclosure.
Examples 1-10 and Comparative Example 1 The thermoformed components having excellent coating adhesion of Examples 1-10 and Comparative Example 1 are manufactured by the following step:
(1) Immersing a substrate in an aluminum coating solution to obtain a plate having an aluminum coating on a surface thereof.
(2) Leveling: using a leveling roller having a roughness Ra of 0.5-3.0 urn to level the plate, and controlling the leveling elongation <.0%, so that the surface thermal radiation coefficient of the plate was 0.1-0.8, the surface roughness Ra of the plate was 0.3-2.0 m, and the peak roughness count Rpc of the surface of the plate was 30-150.
(3) Blanking: performing blanking on the plate or cutting the plate to obtain a blank having a required component shape;
(4) Heat treatment: putting the blank into a heating furnace for heating and heat preservation, wherein the temperature of the heating furnace was 880-960 C, the atmosphere in the heating furnace was air or nitrogen, the residence time of the blank in the heating furnace was 2.5-10 min, and during the heating up process of blank heating, the heating rate did not exceed 10 C/s in the range of heating up to 400-600 C.
(5) Transferring and hot stamping: quickly (such as within 20 seconds) transferring the heated blank to a mold for cooling and stamping forming to form a thermoformed component.
Wherein, in the hot stamping process, after the mold was closed, a pressure holding quenching was continued for 4-20 s, the pressure holding pressure applied to the blank surface was >8 MPa, and the material of the mold met the following requirement: the thermal diffusion coefficient at 700 C was greater than 3.8 mng/s, and during stamping, the closing speed of the mold was 30-150 mm/s, and the blank was cooled to 50-200 C at a cooling rate of 30-150 C/s.
Wherein, the manufacturing methods of every Examples and Comparative Example are as follows:
Example 1 A 1.2 mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 8.5%, Fe: 2.6%, Zn: 15%, Mg:
4%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace.
The temperature of the heating furnace was 950 C, the residence time was 3.5 minutes, the heating rate was 2 C/s in the range of 400-600 C, the transferring time was 4 seconds, the pressure holding time was 5 seconds, the pressure holding pressure was 10 M
Pa, the mold closing speed was 50 mm/s, the cooling speed was 50 C/s, the finish temperature of cooling was 200 C
and the thermal diffusion coefficient of the mold at 700 C was 4 mm2/5.
Example 2 A 0.9mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 5%, Fe: 2.4%, Zn: 8%, Mg: 8%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The temperature of the heating furnace was 940 C, the residence time was 5 minutes, the heating rate was 5 C/s in the range of 400-600 C, the transferring time was 6 seconds, the pressure holding time was 15 seconds, the pressure holding pressure was 20 M Pa, the mold closing speed was 150 mm/s, the cooling speed was 150 C/s, the finish temperature of cooling was 50 C and the thermal diffusion coefficient of the mold at 700 C was 5 mm2/5, Example 3 A 1.0mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 9.0%, Fe: 2.7%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The heating rate of 400-600 Cwas 5 C/s, the temperature of the heating furnace was 930 C, the residence time was
Further, in the manufacturing method of the present disclosure, in step (5), the blank is transferred to the mold within 20 seconds.
Further, in the manufacturing method of the present disclosure, in the hot stamping process of step (5), after the mold is closed, a pressure holding quenching is continued for 4-20 s, and the pressure holding pressure applied to the blank surface is >8 MPa. In some embodiments, the pressure holding pressure is 10-20 M Pa.
Further, in the manufacturing method of the present disclosure, in step (5), the material of the mold meets the following requirement: the thermal diffusion coefficient at 700 C is greater than 3.8 nrinn2/s.
Further, in the manufacturing method of the present disclosure, in step (5), during stamping, the closing speed of the mold is 30-150 mm/s, so that the thermoformed component can ensure good forming performance and reduce stamping defects, such as cracking and necking.
Further, in the manufacturing method of the present disclosure, in step (5), the blank is cooled to 50-200 C at a cooling rate of 30-150 C/s to change the internal structure of the thermoformed component into the required structure, and ensure that the thermoformed component still maintains a good size and shape during the cooling process.
The present disclosure also includes a thermofornned component manufactured by the above method.
Compared with the prior art, the thermoformed component having excellent coating adhesion and its method have the following advantages and beneficial effects:
The thermoformed component having excellent coating adhesion of the present disclosure has good paintability, good coating adhesion and good corrosion resistance, and is very suitable for automotive parts, such as front and rear doors, left and right anti-collision rods/beams, front and rear bumpers, A-pillar reinforcing plates, B-pillar reinforcing plates, floor middle channels, etc.
In addition, the manufacturing method of the present disclosure also has the above advantages and beneficial effects.
DETAILED DESCRIPTION
The thermoformed component having excellent coating adhesion of the present disclosure and its manufacturing method will be further explained and illustrated with reference to specific examples. Nonetheless, the explanation and illustration are not intended to unduly limit the technical solution of the present disclosure.
Examples 1-10 and Comparative Example 1 The thermoformed components having excellent coating adhesion of Examples 1-10 and Comparative Example 1 are manufactured by the following step:
(1) Immersing a substrate in an aluminum coating solution to obtain a plate having an aluminum coating on a surface thereof.
(2) Leveling: using a leveling roller having a roughness Ra of 0.5-3.0 urn to level the plate, and controlling the leveling elongation <.0%, so that the surface thermal radiation coefficient of the plate was 0.1-0.8, the surface roughness Ra of the plate was 0.3-2.0 m, and the peak roughness count Rpc of the surface of the plate was 30-150.
(3) Blanking: performing blanking on the plate or cutting the plate to obtain a blank having a required component shape;
(4) Heat treatment: putting the blank into a heating furnace for heating and heat preservation, wherein the temperature of the heating furnace was 880-960 C, the atmosphere in the heating furnace was air or nitrogen, the residence time of the blank in the heating furnace was 2.5-10 min, and during the heating up process of blank heating, the heating rate did not exceed 10 C/s in the range of heating up to 400-600 C.
(5) Transferring and hot stamping: quickly (such as within 20 seconds) transferring the heated blank to a mold for cooling and stamping forming to form a thermoformed component.
Wherein, in the hot stamping process, after the mold was closed, a pressure holding quenching was continued for 4-20 s, the pressure holding pressure applied to the blank surface was >8 MPa, and the material of the mold met the following requirement: the thermal diffusion coefficient at 700 C was greater than 3.8 mng/s, and during stamping, the closing speed of the mold was 30-150 mm/s, and the blank was cooled to 50-200 C at a cooling rate of 30-150 C/s.
Wherein, the manufacturing methods of every Examples and Comparative Example are as follows:
Example 1 A 1.2 mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 8.5%, Fe: 2.6%, Zn: 15%, Mg:
4%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace.
The temperature of the heating furnace was 950 C, the residence time was 3.5 minutes, the heating rate was 2 C/s in the range of 400-600 C, the transferring time was 4 seconds, the pressure holding time was 5 seconds, the pressure holding pressure was 10 M
Pa, the mold closing speed was 50 mm/s, the cooling speed was 50 C/s, the finish temperature of cooling was 200 C
and the thermal diffusion coefficient of the mold at 700 C was 4 mm2/5.
Example 2 A 0.9mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 5%, Fe: 2.4%, Zn: 8%, Mg: 8%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The temperature of the heating furnace was 940 C, the residence time was 5 minutes, the heating rate was 5 C/s in the range of 400-600 C, the transferring time was 6 seconds, the pressure holding time was 15 seconds, the pressure holding pressure was 20 M Pa, the mold closing speed was 150 mm/s, the cooling speed was 150 C/s, the finish temperature of cooling was 50 C and the thermal diffusion coefficient of the mold at 700 C was 5 mm2/5, Example 3 A 1.0mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 9.0%, Fe: 2.7%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The heating rate of 400-600 Cwas 5 C/s, the temperature of the heating furnace was 930 C, the residence time was
7 minutes, the heated blank was transferred to a mold within 8 seconds, and the thermal diffusion coefficient of the mold at 700 C was 7 mm2/s. The mold closing speed was 70 mm/s, the pressure holding time was 6 seconds, the pressure holding pressure was 12 MPa, the cooling speed was 100 C/s, and the finish temperature of cooling was 100 C The proportion of martensite in the microstructure of the substrate of the thermoformed component is higher than 96%.
Example 4 A 2.8mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 8.8%, Fe: 2.7%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The temperature of the heating furnace was 920 C, the residence time was 7 minutes, the heating rate of 400-600 C
was 10 C/s, the heated blank was transferred to a mold within 8 seconds, the mold closing speed was 70mm/s, the pressure holding time was 6 seconds, the pressure holding pressure was 15 MPa, the cooling speed was 60 C/s, the finish temperature of cooling was 60 C and the thermal diffusion coefficient of the mold at 700 C was 6 mm2/5. The proportion of martensite in the microstructure of the substrate of the thermoformed component is higher than 98%.
Example 5 A 1.1mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 10%, Fe: 3.5%, Zn: 2%, Mg: 1%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The temperature of the heating furnace was 935 C, the residence time was 4.5 minutes, the heating rate was 4 C/s in the range of 400-600 C, the heated blank was transferred to a mold within 7 seconds, the mold closing speed of upper and lower molds was 80nnm/s, the pressure holding time was 5 seconds, the pressure holding pressure was 15 M Pa, the thermal diffusion coefficient of the mold at 700 C was 4 mm2/s and the finish temperature of cooling was 100 C.
The proportion of nnartensite in the microstructure of the substrate of the themnoformed component is higher than 95%.
Example 6 A 1.5mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 10%, Fe: 3.5%, Mg: 0.5%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The temperature of the heating furnace was 935 C, the residence time was 5 minutes, the heating rate was 6 C/s in the range of 400-600 C, the heated blank was transferred to a mold within 7 seconds, the mold closing speed of upper and lower molds was 80 mm/s, the pressure holding time was 5 seconds, the pressure holding pressure was 15 M Pa, the thermal diffusion coefficient of the mold at 700 C was 4 mm2/s and the finish temperature of cooling was 120 C. The proportion of martensite in the microstructure of the substrate of the thermoformed component is higher than 95%.
Example 7 A 1.8mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 10%, Fe: 3.5%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The temperature of the heating furnace was 945 C, the residence time was 2.5 minutes, the heating rate was 7 C/s in the range of 400-600 C, the heated blank was transferred to a mold within 7 seconds, the mold closing speed of upper and lower molds was 80 mm/s, the pressure holding time was 5 seconds, the pressure holding pressure was 15 MPa, the thermal diffusion coefficient of the mold at 700 C
was 6.8 mm2/s and the finish temperature of cooling was 140 C. The proportion of martensite in the microstructure of the substrate of the thermoformed component is higher than 95%.
Example 8 A 2.0mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 10%, Fe: 3.5%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The temperature of the heating furnace was 940 C, the residence time was 3 minutes, the heating rate was 3 C/s in the range of 400-600 C, the oxygen content of the atmosphere in the furnace was 22%, the heated blank was transferred to a mold within 7 seconds, the mold closing speed of upper and lower molds was 80 mm/s, the pressure holding time was 5 seconds, the pressure holding pressure was 15 MPa, the thermal diffusion coefficient of the mold at 700 C was 7 mm2/s and the finish temperature of cooling was 110 C. The proportion of martensite in the microstructure of the substrate of the thermoformed component is higher than 95%.
Example 9 A 2.4mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 10%, Fe: 3.5%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The temperature of the heating furnace was 935 C, the residence time was 5 minutes, the heating rate was 8 C/s in the range of 400-600 C, the oxygen content of the atmosphere in the furnace was 22%, the heated blank was transferred to a mold within 7 seconds, the mold closing speed of upper and lower molds was 80 mm/s, the pressure holding time was 5 seconds, the pressure holding pressure was 15 MPa, the thermal diffusion coefficient of the mold at 700 C was 4 mm2/5 and the finish temperature of cooling was 100 C. The proportion of martensite in the microstructure of the substrate of the thermoformed component is higher than 95%.
Example 10 A 2.8mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 10%, Fe: 3.5%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The temperature of the heating furnace was 950 C, the residence time was 2.5 minutes, the heating rate was 4 C/s in the range of 400-600 C, the oxygen content of the atmosphere in the furnace was 20%, the heated blank was transferred to a mold within 15 seconds, the mold closing speed of upper and lower molds was 80 nit-Ns, the pressure holding time was 5 seconds, the pressure holding pressure was 15 MPa, the thermal diffusion coefficient of the mold at 700 C was 5 mm2/s and the finish temperature of cooling was 80 C. The proportion of martensite in the microstructure of the substrate of the thermoformed component is higher than 95%.
Comparative Example 1 A 1.5mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 10%, Fe: 3.5%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The temperature of the heating furnace was 935 C, the residence time was 5 minutes, the heating rate was 6`)Cis in the range of 400-600 C, the heated blank was transferred to a mold within 7 seconds, the mold closing speed of upper and lower molds was 80 mm/s, the pressure holding time was 5 seconds, the pressure holding pressure was 15 MPa, the thermal diffusion coefficient of the mold at 700 C
was 4 mm2/s and the finish temperature of cooling was 120 C. The proportion of martensite in the microstructure of the substrate of the thermoformed component is higher than 95%.
Table 1 lists the mass percentage ratio of each chemical element of the substrate layers of the thermoformed components having excellent coating adhesion of Examples 1-10 and the substrate layer of Comparative Example 1.
Table 1. (wt%, and a balance of Fe and other unavoidable impurities) Example C Si Mn P 5 Al Ti B Cr Nb V
1 0.02 0.05 0.12 0.059 0.038 0.09 0.090 0.0005 0.15 -2 0.06 0.23 1.19 0.015 0.001 0.04 0.030 0.040 0.27 -3 0.49 0.50 2.51 0.024 0.04 0.08 0.027 0.0052 0.51 0.002 0.002 4 0.39 0.36 3.00 0.044 0.03 0.07 0.05 0.0062 0.71 0.003 0.005 0.78 0.48 0.50 0.081 0.02 0.05 0.48 0.0071 0.20 0.1 6 0.15 0.10 2.90 0.059 0.038 0.09 0.090 0.0031 0.15 -7 0.25 0.23 1.19 0.015 0.001 0.04 0.030 0.0040 0.27 -a 0.49 0.50 2.51 0.024 0.04 0.08 0.027 0.0052 0.51 0.005 0.008 9 0.39 0.36 3.00 0.044 0.03 0.07 0.05 0.0062 0.71 -0.50 0.9 0.50 0.081 0.02 0.05 0.20 0.09 0.20 -Comparative 0.25 0.23 1.19 0.015 0.001 0.04 0.030 0.0040 0.27 -Example 1 To verify the application effect of the present disclosure and prove the components having excellent coating adhesion of Examples 1-10 and the comparative thermoformed component of Comparative Example 1 were tested in the present disclosure. Table 2 lists the test results of every Examples and Comparative Example.
Table 2 Compa rat ive Example Example Average weight of aluminum coating, g/m2 per surface Thickness, mm 1.2 0.9 1 2.8 1.1 1.5 1.8 2 2.4 2.8 1.5 Leveling elongation/% 0.5 0.8 1.5 0.3 0.6 0.7 1 1.2 1.8 2 0.7 Roughness of leveling roller/gm 0.5 1.2 3 1 1.5 1.5 1.8 1.2 1.9 2.8 0.3 Roughness of plate before heat Ra/um 0.3 0.8 2 0.9 1.3 1 1.1 0.8 0.7 1.5 0.2 treatment and hot stamping Rpc 50 90 150 90 50 100 70 Roughness of finished product Raium 1.8 1.8 1.9 2 2.3 2 1.9 1.9 1.8 2.4 1.3 after heat treatment and hot Rt/um 12 13 18 19 20 21 18 19 19 , 22 9 stamping Rpc Thickness of 50%Al layer in alloy layer/um 15 18 20 25 35 26 20 Thickness of diffusion layer/nm 5 6 7 8 16 10 8
Example 4 A 2.8mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 8.8%, Fe: 2.7%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The temperature of the heating furnace was 920 C, the residence time was 7 minutes, the heating rate of 400-600 C
was 10 C/s, the heated blank was transferred to a mold within 8 seconds, the mold closing speed was 70mm/s, the pressure holding time was 6 seconds, the pressure holding pressure was 15 MPa, the cooling speed was 60 C/s, the finish temperature of cooling was 60 C and the thermal diffusion coefficient of the mold at 700 C was 6 mm2/5. The proportion of martensite in the microstructure of the substrate of the thermoformed component is higher than 98%.
Example 5 A 1.1mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 10%, Fe: 3.5%, Zn: 2%, Mg: 1%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The temperature of the heating furnace was 935 C, the residence time was 4.5 minutes, the heating rate was 4 C/s in the range of 400-600 C, the heated blank was transferred to a mold within 7 seconds, the mold closing speed of upper and lower molds was 80nnm/s, the pressure holding time was 5 seconds, the pressure holding pressure was 15 M Pa, the thermal diffusion coefficient of the mold at 700 C was 4 mm2/s and the finish temperature of cooling was 100 C.
The proportion of nnartensite in the microstructure of the substrate of the themnoformed component is higher than 95%.
Example 6 A 1.5mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 10%, Fe: 3.5%, Mg: 0.5%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The temperature of the heating furnace was 935 C, the residence time was 5 minutes, the heating rate was 6 C/s in the range of 400-600 C, the heated blank was transferred to a mold within 7 seconds, the mold closing speed of upper and lower molds was 80 mm/s, the pressure holding time was 5 seconds, the pressure holding pressure was 15 M Pa, the thermal diffusion coefficient of the mold at 700 C was 4 mm2/s and the finish temperature of cooling was 120 C. The proportion of martensite in the microstructure of the substrate of the thermoformed component is higher than 95%.
Example 7 A 1.8mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 10%, Fe: 3.5%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The temperature of the heating furnace was 945 C, the residence time was 2.5 minutes, the heating rate was 7 C/s in the range of 400-600 C, the heated blank was transferred to a mold within 7 seconds, the mold closing speed of upper and lower molds was 80 mm/s, the pressure holding time was 5 seconds, the pressure holding pressure was 15 MPa, the thermal diffusion coefficient of the mold at 700 C
was 6.8 mm2/s and the finish temperature of cooling was 140 C. The proportion of martensite in the microstructure of the substrate of the thermoformed component is higher than 95%.
Example 8 A 2.0mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 10%, Fe: 3.5%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The temperature of the heating furnace was 940 C, the residence time was 3 minutes, the heating rate was 3 C/s in the range of 400-600 C, the oxygen content of the atmosphere in the furnace was 22%, the heated blank was transferred to a mold within 7 seconds, the mold closing speed of upper and lower molds was 80 mm/s, the pressure holding time was 5 seconds, the pressure holding pressure was 15 MPa, the thermal diffusion coefficient of the mold at 700 C was 7 mm2/s and the finish temperature of cooling was 110 C. The proportion of martensite in the microstructure of the substrate of the thermoformed component is higher than 95%.
Example 9 A 2.4mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 10%, Fe: 3.5%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The temperature of the heating furnace was 935 C, the residence time was 5 minutes, the heating rate was 8 C/s in the range of 400-600 C, the oxygen content of the atmosphere in the furnace was 22%, the heated blank was transferred to a mold within 7 seconds, the mold closing speed of upper and lower molds was 80 mm/s, the pressure holding time was 5 seconds, the pressure holding pressure was 15 MPa, the thermal diffusion coefficient of the mold at 700 C was 4 mm2/5 and the finish temperature of cooling was 100 C. The proportion of martensite in the microstructure of the substrate of the thermoformed component is higher than 95%.
Example 10 A 2.8mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 10%, Fe: 3.5%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The temperature of the heating furnace was 950 C, the residence time was 2.5 minutes, the heating rate was 4 C/s in the range of 400-600 C, the oxygen content of the atmosphere in the furnace was 20%, the heated blank was transferred to a mold within 15 seconds, the mold closing speed of upper and lower molds was 80 nit-Ns, the pressure holding time was 5 seconds, the pressure holding pressure was 15 MPa, the thermal diffusion coefficient of the mold at 700 C was 5 mm2/s and the finish temperature of cooling was 80 C. The proportion of martensite in the microstructure of the substrate of the thermoformed component is higher than 95%.
Comparative Example 1 A 1.5mm steel plate with aluminum alloy coating was leveled by a leveling roller to obtain a plate before heat treatment and hot stamping having a surface roughness as shown in Table 2, and the plate was laser blanked into a blank with a certain size and shape. The mass percentage of chemical compositions of the aluminum coating solution was Si: 10%, Fe: 3.5%, and a balance of Al and other unavoidable impurities. The blank entered a heating furnace. The temperature of the heating furnace was 935 C, the residence time was 5 minutes, the heating rate was 6`)Cis in the range of 400-600 C, the heated blank was transferred to a mold within 7 seconds, the mold closing speed of upper and lower molds was 80 mm/s, the pressure holding time was 5 seconds, the pressure holding pressure was 15 MPa, the thermal diffusion coefficient of the mold at 700 C
was 4 mm2/s and the finish temperature of cooling was 120 C. The proportion of martensite in the microstructure of the substrate of the thermoformed component is higher than 95%.
Table 1 lists the mass percentage ratio of each chemical element of the substrate layers of the thermoformed components having excellent coating adhesion of Examples 1-10 and the substrate layer of Comparative Example 1.
Table 1. (wt%, and a balance of Fe and other unavoidable impurities) Example C Si Mn P 5 Al Ti B Cr Nb V
1 0.02 0.05 0.12 0.059 0.038 0.09 0.090 0.0005 0.15 -2 0.06 0.23 1.19 0.015 0.001 0.04 0.030 0.040 0.27 -3 0.49 0.50 2.51 0.024 0.04 0.08 0.027 0.0052 0.51 0.002 0.002 4 0.39 0.36 3.00 0.044 0.03 0.07 0.05 0.0062 0.71 0.003 0.005 0.78 0.48 0.50 0.081 0.02 0.05 0.48 0.0071 0.20 0.1 6 0.15 0.10 2.90 0.059 0.038 0.09 0.090 0.0031 0.15 -7 0.25 0.23 1.19 0.015 0.001 0.04 0.030 0.0040 0.27 -a 0.49 0.50 2.51 0.024 0.04 0.08 0.027 0.0052 0.51 0.005 0.008 9 0.39 0.36 3.00 0.044 0.03 0.07 0.05 0.0062 0.71 -0.50 0.9 0.50 0.081 0.02 0.05 0.20 0.09 0.20 -Comparative 0.25 0.23 1.19 0.015 0.001 0.04 0.030 0.0040 0.27 -Example 1 To verify the application effect of the present disclosure and prove the components having excellent coating adhesion of Examples 1-10 and the comparative thermoformed component of Comparative Example 1 were tested in the present disclosure. Table 2 lists the test results of every Examples and Comparative Example.
Table 2 Compa rat ive Example Example Average weight of aluminum coating, g/m2 per surface Thickness, mm 1.2 0.9 1 2.8 1.1 1.5 1.8 2 2.4 2.8 1.5 Leveling elongation/% 0.5 0.8 1.5 0.3 0.6 0.7 1 1.2 1.8 2 0.7 Roughness of leveling roller/gm 0.5 1.2 3 1 1.5 1.5 1.8 1.2 1.9 2.8 0.3 Roughness of plate before heat Ra/um 0.3 0.8 2 0.9 1.3 1 1.1 0.8 0.7 1.5 0.2 treatment and hot stamping Rpc 50 90 150 90 50 100 70 Roughness of finished product Raium 1.8 1.8 1.9 2 2.3 2 1.9 1.9 1.8 2.4 1.3 after heat treatment and hot Rt/um 12 13 18 19 20 21 18 19 19 , 22 9 stamping Rpc Thickness of 50%Al layer in alloy layer/um 15 18 20 25 35 26 20 Thickness of diffusion layer/nm 5 6 7 8 16 10 8
8 8 8 8 Thickness of total aluminum coating4un Tensile strength of product after stamping/MPa Yield strength of product after stamping/MPa 400 500 1250 1350 1200 1050 1000 Elongation/% 19 15 5 4 4.5 6 7 6 6 6 Nonunifo Paintability The surface of the coating is uniform after pretreatment rm Gra Gra Grad Grad Grad Grad Grad Grad Grad Grad Coating adhesion after coating Grade 5 del del e2 e2 el el e2 el e2 el Corrosion resistance, mm I 1 1.5 3 3.5 2 2.3 3.5 3 3.8 3 5 *Test method for coating adhesion:
Referring to GE3/T 9286-1998 cross cut test method, cutting grids on the surface with a knife, sticking an adhesive tape to the center of the formed grids, then pulling it off smoothly, observing the phenomenon of coating falling off, and judging the grade by calculating the state of grids according to the standard.
The paintability was evaluated with reference to GMW16170 standard.
The corrosion resistance was tested with reference to GMW14872.
As can be seen from Table 2, the yield strength of each example of the present disclosure is 400-1350 M Pa, the tensile strength is 500-2000 MPa, and the elongation is 4-19%.
In addition, it can be seen from Table 2 that the surface roughness Ra of the finished product of the comparative thermoformed component of Comparative Example 1 after hot stamping is lower than 1.8 [im, Rt is less than 12 j.tm, Rpc is lower than 90, and the paintability of the thermoformed component of Comparative Example 1 is poor, the coating adhesion does not meet the requirements, and its performance is far inferior to that of the thermoformed components of every Examples of the present disclosure. In addition, it can be seen from table 2 that the higher the surface roughness of the material before heat treatment and hot stamping used by the thermoformed component, the higher the product roughness after heat treatment and hot stamping, and the better the coating adhesion.
To sum up, the thermoformed component having excellent coating adhesion of the present disclosure has good paintability, good coating adhesion and good corrosion resistance, and is very suitable for automotive parts, such as front and rear doors, left and right anti-collision rods/beams, front and rear bumpers, A-pillar reinforcing plates, B-pillar reinforcing plates, floor middle channels, etc.
In addition, the manufacturing method of the present disclosure also has the above advantages and beneficial effects, It should be noted that the prior art part of the protection scope of the present disclosure is not limited to the embodiments given in the present disclosure, and all prior technologies that do not conflict with the solution of the present disclosure, including but not limited to prior patent documents, prior public publications, prior public use, etc., can be included in the protection scope of the present disclosure.
In addition, the combination mode of the technical features in the present disclosure is not limited to the combination mode recorded in the claims or the combination mode recorded in the specific embodiment of the present disclosure, All the technical features recorded in present disclosure can be combined or integrated in any way, unless there is a contradiction between them.
It should also be noted that the examples listed above are only specific examples of the present disclosure. Obviously, the present disclosure is not limited to the above examples, and the subsequent similar changes or deformations can be directly obtained or easily thought of by those skilled in the art from the contents disclosed in the present disclosure, which should belong to the protection scope of the present disclosure.
Referring to GE3/T 9286-1998 cross cut test method, cutting grids on the surface with a knife, sticking an adhesive tape to the center of the formed grids, then pulling it off smoothly, observing the phenomenon of coating falling off, and judging the grade by calculating the state of grids according to the standard.
The paintability was evaluated with reference to GMW16170 standard.
The corrosion resistance was tested with reference to GMW14872.
As can be seen from Table 2, the yield strength of each example of the present disclosure is 400-1350 M Pa, the tensile strength is 500-2000 MPa, and the elongation is 4-19%.
In addition, it can be seen from Table 2 that the surface roughness Ra of the finished product of the comparative thermoformed component of Comparative Example 1 after hot stamping is lower than 1.8 [im, Rt is less than 12 j.tm, Rpc is lower than 90, and the paintability of the thermoformed component of Comparative Example 1 is poor, the coating adhesion does not meet the requirements, and its performance is far inferior to that of the thermoformed components of every Examples of the present disclosure. In addition, it can be seen from table 2 that the higher the surface roughness of the material before heat treatment and hot stamping used by the thermoformed component, the higher the product roughness after heat treatment and hot stamping, and the better the coating adhesion.
To sum up, the thermoformed component having excellent coating adhesion of the present disclosure has good paintability, good coating adhesion and good corrosion resistance, and is very suitable for automotive parts, such as front and rear doors, left and right anti-collision rods/beams, front and rear bumpers, A-pillar reinforcing plates, B-pillar reinforcing plates, floor middle channels, etc.
In addition, the manufacturing method of the present disclosure also has the above advantages and beneficial effects, It should be noted that the prior art part of the protection scope of the present disclosure is not limited to the embodiments given in the present disclosure, and all prior technologies that do not conflict with the solution of the present disclosure, including but not limited to prior patent documents, prior public publications, prior public use, etc., can be included in the protection scope of the present disclosure.
In addition, the combination mode of the technical features in the present disclosure is not limited to the combination mode recorded in the claims or the combination mode recorded in the specific embodiment of the present disclosure, All the technical features recorded in present disclosure can be combined or integrated in any way, unless there is a contradiction between them.
It should also be noted that the examples listed above are only specific examples of the present disclosure. Obviously, the present disclosure is not limited to the above examples, and the subsequent similar changes or deformations can be directly obtained or easily thought of by those skilled in the art from the contents disclosed in the present disclosure, which should belong to the protection scope of the present disclosure.
Claims (20)
1. A therrnoformed cornponent having excellent coating adhesion, cornprising a substrate layer and an aluminum coating coated on at least one surface of the substrate layer, wherein the average roughness Ra of a surface of the thermoformed component is 1.0-3.0 flirl, the peak-to-valley height Rt is 8-30 gm, and the roughness peak count Rpc is >50.
2. The thermoformed component having excellent coating adhesion according to claim 1, wherein the alurninum coating comprises a diffusion layer adjacent to the substrate layer and an alloy layer on the surface of the aluminum coating, wherein the ratio of the thickness of the diffusion layer to the total thickness of the aluminum coating is 0.08-0.5.
3. The therrnoformed component having excellent coating adhesion according to claim 1 or 2, wherein the thickness of the diffusion layer is <16 gm, and the total thickness of the aluminum coating is <60 gm.
4. The thermoformed component having excellent coating adhesion according to claim 1, wherein the mass percentage of chemical elements of the aluminurn coating is:
Si: 4-14%, Fe:
0-4%, Mg: 0-10%, Zn: 0-20%, and a balance of Al and other unavoidable impurities;
preferably, the rnass percentage of chernical elements of the aluminum coating is: Si: 4-14%, Fe: 2-4%, Mg: 0-10%, Zn: 0-20%, and a balance of Al and other unavoidable impurities.
Si: 4-14%, Fe:
0-4%, Mg: 0-10%, Zn: 0-20%, and a balance of Al and other unavoidable impurities;
preferably, the rnass percentage of chernical elements of the aluminum coating is: Si: 4-14%, Fe: 2-4%, Mg: 0-10%, Zn: 0-20%, and a balance of Al and other unavoidable impurities.
5. The thermoformed component having excellent coating adhesion according to claim 1, wherein the average weight of the aluminum coating is 20-120 g/m2 per single surface.
6. The thermoformed component having excellent coating adhesion according to claim 5, wherein the average weight of the aluminum coating is 30-100 g/m2 per single surface.
7. The thermoformed component having excellent coating adhesion according to claim 1, wherein the mass percentage of chemical elements of the substrate layer is:
C: 0.01-0.8%, Si: 0.05-1.0%, Mn: 0.1-5%, P<0.3%, S<0.1%, A1<0.3%, Ti<0.5%, B:
0.0005-0.1%, Cr: 0.01-3%, Nb<0.5%, V<0.5%, and a balance of Fe and other unavoidable impurities.
C: 0.01-0.8%, Si: 0.05-1.0%, Mn: 0.1-5%, P<0.3%, S<0.1%, A1<0.3%, Ti<0.5%, B:
0.0005-0.1%, Cr: 0.01-3%, Nb<0.5%, V<0.5%, and a balance of Fe and other unavoidable impurities.
8. The thermoformed component having excellent coating adhesion according to claim 7, wherein the rnass percentage of chemical elernents of the substrate layer further meets at least one of the following:
C: 0.05-0.6%, Si: 0.07-0.8%, Mn: 0.3-4%, P<0.2%, S<0.08%, Al<0.2%, Ti<0.4%, B: 0.0005-0.08%, Cr: 0.01-2%, Nb<0.3%, V<0.3%.
C: 0.05-0.6%, Si: 0.07-0.8%, Mn: 0.3-4%, P<0.2%, S<0.08%, Al<0.2%, Ti<0.4%, B: 0.0005-0.08%, Cr: 0.01-2%, Nb<0.3%, V<0.3%.
9. The thermoformed component having excellent coating adhesion according to claim 7 or 8, wherein the mass percentage of chemical elements of the substrate layer further meets at least one of the following:
C: 0.15-0.5%, Si: 0.1-0.5%, Mn: 0.5-3%, P<0.1%, S<0.05%, Al<0.1%, Ti<0.2%, Cr: 0.01-1%.
C: 0.15-0.5%, Si: 0.1-0.5%, Mn: 0.5-3%, P<0.1%, S<0.05%, Al<0.1%, Ti<0.2%, Cr: 0.01-1%.
10. The thermoformed component having excellent coating adhesion according to clairn 1, wherein the yield strength of the thermoformed component having excellent coating adhesion is 400-1400 MPa, the tensile strength is 500-2100 MPa, and the elongation is >4%.
11. The thermoformed component having excellent coating adhesion according to clairn 1, wherein the surface of the thermoformed component having excellent coating adhesion comprises Fe2Al5 and FeAl alloy; or the surface of the therrnoformed component having excellent coating adhesion mainly consists of Fe2Al5 and FeAl alloy, and further comprises silicon oxide, aluminum oxide and iron oxide.
12. The thermoformed component having excellent coating adhesion according to clairn 9, wherein the volume percentage of martensite in the microstructure of the substrate layer of the thermoformed component having excellent coating adhesion is >95%.
13. A manufacturing rnethod for the thermoforrned component having excellent coating adhesion of any one of claims 1-12, comprising the following steps:
(1) immersing a substrate in an aluminurn coating solution to obtain a plate having an aluminurn coating on a surface thereof;
(2) leveling: using a leveling roller having a roughness Ra of 0.5-3.0 um to level the plate, and controlling the leveling elongation <2.0%, wherein the surface thermal radiation coefficient of the plate is 0.1-0.8, the surface roughness Ra of the plate is 0.3-2.0 !_tm, and the peak roughness count RPC of the surface of the plate is 30-150;
(3) blanking: perforrning blanking on the plate or cutting the plate to obtain a blank having a required component shape;
(4) heat treatment: putting the blank into a heating furnace for heating and heat preservation, wherein the temperature of the heating furnace is 880-960 C, the atmosphere in the heating furnace is air or nitrogen, and the residence time of the blank in the heating furnace is 2.5-10 min;
(5) transferring and hot stamping: quickly transferring the heated blank to a mold for cooling and stamping forrning to form the thermoformed component.
(1) immersing a substrate in an aluminurn coating solution to obtain a plate having an aluminurn coating on a surface thereof;
(2) leveling: using a leveling roller having a roughness Ra of 0.5-3.0 um to level the plate, and controlling the leveling elongation <2.0%, wherein the surface thermal radiation coefficient of the plate is 0.1-0.8, the surface roughness Ra of the plate is 0.3-2.0 !_tm, and the peak roughness count RPC of the surface of the plate is 30-150;
(3) blanking: perforrning blanking on the plate or cutting the plate to obtain a blank having a required component shape;
(4) heat treatment: putting the blank into a heating furnace for heating and heat preservation, wherein the temperature of the heating furnace is 880-960 C, the atmosphere in the heating furnace is air or nitrogen, and the residence time of the blank in the heating furnace is 2.5-10 min;
(5) transferring and hot stamping: quickly transferring the heated blank to a mold for cooling and stamping forrning to form the thermoformed component.
14. The manufacturing rnethod according to clairn 13, wherein in step (1), the mass percentage of chemical elements of the alurninum coating solution is: Si: 5-11%, Fe: 2-4%, Zn:
0-15%, Mg: 0-8%, and a balance of Al and other unavoidable impurities;
preferably being: Si:
8-11%, Fe: 2-4%, Zn: 0-11%, Mg: 0-8%, and a balance of Al and other unavoidable impurities.
0-15%, Mg: 0-8%, and a balance of Al and other unavoidable impurities;
preferably being: Si:
8-11%, Fe: 2-4%, Zn: 0-11%, Mg: 0-8%, and a balance of Al and other unavoidable impurities.
15. The rnanufacturing rnethod according to claim 13, wherein in step (4), during the heating up process of blank heating, the heating rate does not exceed 10 C/s in the range of heating up to 400-600 C.
16. The rnanufacturing method according to claim 13, wherein in step (5), the blank is transferred to the mold within 20 seconds.
17. The manufacturing method according to claim 13, wherein in the hot stamping process of step (5), after the mold is closed, a pressure holding quenching is continued for 4-20 s, and the pressure holding pressure applied to the blank surface is >8 MPa.
18. The rnanufacturing method according to claim 13, wherein the material of the rnold meets the following requirement: the thermal diffusion coefficient at 700 C
is greater than 3.8 mm2/s.
is greater than 3.8 mm2/s.
19. The rnanufacturing method according to claim 13, wherein in step (5), the closing speed of the rnold during stamping is 30-150 rnrn/s.
20. The rnanufacturing method according to claim 13, wherein in step (5), the blank is cooled to 50-200 C at a cooling rate of 30-150 C/s.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911202456.5 | 2019-11-29 | ||
| CN201911202456.5A CN112877592B (en) | 2019-11-29 | 2019-11-29 | Hot-formed part with excellent paint film adhesion and manufacturing method thereof |
| PCT/CN2020/118368 WO2021103805A1 (en) | 2019-11-29 | 2020-09-28 | Thermoformed component having excellent coating adhesion, and manufacturing method therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA3159490A1 true CA3159490A1 (en) | 2021-06-03 |
Family
ID=76038738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA3159490A Pending CA3159490A1 (en) | 2019-11-29 | 2020-09-28 | Thermoformed component having excellent coating adhesion, and manufacturing method therefor |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US20230002843A1 (en) |
| EP (1) | EP4067530A4 (en) |
| JP (1) | JP7326612B2 (en) |
| KR (1) | KR20220106776A (en) |
| CN (1) | CN112877592B (en) |
| AU (1) | AU2020389982A1 (en) |
| BR (1) | BR112022009756A2 (en) |
| CA (1) | CA3159490A1 (en) |
| MX (1) | MX2022006471A (en) |
| TW (1) | TWI780518B (en) |
| WO (1) | WO2021103805A1 (en) |
| ZA (1) | ZA202205445B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113481451B (en) * | 2021-06-07 | 2022-12-27 | 马鞍山钢铁股份有限公司 | Pre-coated steel plate for hot forming, preparation method thereof, hot forming steel member and application thereof |
| CN114150252B (en) * | 2021-11-30 | 2023-08-29 | 马鞍山钢铁股份有限公司 | Plated hot-formed steel plate, hot-stamped part with excellent adhesive property, manufacturing method and application |
| KR20230096381A (en) * | 2021-12-23 | 2023-06-30 | 주식회사 포스코 | A plated steel sheet having superior paint adhesion and corrosion resistance after hot press forming, a method for producing the same and a hot press formed member |
| WO2024028642A1 (en) * | 2022-08-04 | 2024-02-08 | Arcelormittal | Steel sheet having excellent powdering properties after press-hardening and method for manufacturing the same |
| WO2024028641A1 (en) * | 2022-08-04 | 2024-02-08 | Arcelormittal | Steel sheet having excellent corrosion properties after press hardening and method for manufacturing the same |
| CN115945571A (en) * | 2023-01-18 | 2023-04-11 | 上海新顿长菁科技有限公司 | Hot forming process of 6XXX series aluminum alloy, parts made by hot forming process and application of hot forming process |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3587005B2 (en) * | 1996-12-18 | 2004-11-10 | Ｊｆｅスチール株式会社 | Hot-dip Zn-Al-based alloy coated steel sheet with excellent surface smoothness and method for producing the same |
| CN101583486B (en) | 2006-10-30 | 2014-08-27 | 安赛乐米塔尔法国公司 | Coated steel strips, methods of making the same, methods of using the same, stamping blanks prepared from the same, stamped products prepared from the same, and articles of manufacture which contains |
| CN101352946B (en) * | 2007-07-23 | 2013-02-06 | 宝山钢铁股份有限公司 | Hot-dip aluminizing zincium steel plate/belt for deep drawing and method for producing the same |
| CN101376956B (en) * | 2007-08-31 | 2010-12-01 | 宝山钢铁股份有限公司 | Method for controlling alloyed hot dip galvanizing steel plate coating phase structure and alloyed hot dip galvanizing steel plate |
| WO2009090443A1 (en) | 2008-01-15 | 2009-07-23 | Arcelormittal France | Process for manufacturing stamped products, and stamped products prepared from the same |
| KR20130110532A (en) * | 2012-03-29 | 2013-10-10 | 현대제철 주식회사 | Method for producing galvanized steel sheet and galvanized steel sheet produced using the same |
| MX2014012798A (en) * | 2012-04-23 | 2015-04-14 | Kobe Steel Ltd | Method for producing galvanized steel sheet for hot stamping, alloyed hot-dipped galvanized steel sheet for hot stamping and method for producing same, and hot stamped component. |
| CN103898430B (en) * | 2012-12-26 | 2016-03-16 | 攀钢集团攀枝花钢钒有限公司 | A kind of method of hot-rolled steel sheet hot-dip aluminizing zinc |
| MX2016007462A (en) * | 2013-12-25 | 2016-08-19 | Nippon Steel & Sumitomo Corp | Vehicle component and vehicle component manufacturing method. |
| JP6237884B2 (en) * | 2014-03-26 | 2017-11-29 | 新日鐵住金株式会社 | High strength hot-formed steel sheet |
| JP6510760B2 (en) | 2014-03-31 | 2019-05-08 | 株式会社神戸製鋼所 | Metal substrate |
| MX2017005568A (en) * | 2014-10-30 | 2017-06-23 | Jfe Steel Corp | High-strength steel sheet, high-strength hot-dip galvanized steel sheet, high-strength molten aluminum-plated steel sheet, and high-strength electrogalvanized steel sheet, and methods for manufacturing same. |
| JP6606897B2 (en) * | 2015-07-16 | 2019-11-20 | 日本製鉄株式会社 | Steel plate for heat treatment, method for producing the same, and hot stamped product |
| KR101677390B1 (en) * | 2015-09-23 | 2016-11-18 | 주식회사 포스코 | Method for manufacturing coated steel sheet having excellent surface quality and press moldability and coated steel sheet produced using the same |
| CN106466697B (en) * | 2016-08-12 | 2020-01-31 | 宝山钢铁股份有限公司 | Hot stamped Steel products with an aluminum or aluminum alloy coating and method for the production thereof |
| WO2018115914A1 (en) * | 2016-12-19 | 2018-06-28 | Arcelormittal | A manufacturing process of hot press formed aluminized steel parts |
| CN108588612B (en) | 2018-04-28 | 2019-09-20 | 育材堂（苏州）材料科技有限公司 | Hot press-formed component, hot press-formed pre- coating steel plate and hot press-formed technique |
| CN117483561A (en) * | 2018-08-08 | 2024-02-02 | 宝山钢铁股份有限公司 | Method for manufacturing hot-stamped component with aluminum-silicon alloy coating and hot-stamped component |
| KR20200076467A (en) * | 2018-12-19 | 2020-06-29 | 주식회사 포스코 | Skin pass roll for hot dip aluminum coated steel sheet having excellent surface appearance and image clarity after painting, method of manufacturing hot dip aluminum coated steel sheet using skin pass roll and hot dip aluminum coated steel sheet |
| CN110117167A (en) * | 2019-04-30 | 2019-08-13 | 马鞍山钢铁股份有限公司 | A kind of aludip and its manufacturing method with photocatalytic activity and excellent high temperature resistance performance |
-
2019
- 2019-11-29 CN CN201911202456.5A patent/CN112877592B/en active Active
-
2020
- 2020-09-28 EP EP20893836.5A patent/EP4067530A4/en active Pending
- 2020-09-28 KR KR1020227020168A patent/KR20220106776A/en active Search and Examination
- 2020-09-28 CA CA3159490A patent/CA3159490A1/en active Pending
- 2020-09-28 BR BR112022009756A patent/BR112022009756A2/en unknown
- 2020-09-28 US US17/779,266 patent/US20230002843A1/en active Pending
- 2020-09-28 WO PCT/CN2020/118368 patent/WO2021103805A1/en unknown
- 2020-09-28 JP JP2022530312A patent/JP7326612B2/en active Active
- 2020-09-28 MX MX2022006471A patent/MX2022006471A/en unknown
- 2020-09-28 AU AU2020389982A patent/AU2020389982A1/en active Pending
- 2020-11-19 TW TW109140496A patent/TWI780518B/en active
-
2022
- 2022-05-17 ZA ZA2022/05445A patent/ZA202205445B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JP7326612B2 (en) | 2023-08-15 |
| AU2020389982A1 (en) | 2022-06-30 |
| EP4067530A1 (en) | 2022-10-05 |
| US20230002843A1 (en) | 2023-01-05 |
| EP4067530A4 (en) | 2022-11-02 |
| KR20220106776A (en) | 2022-07-29 |
| BR112022009756A2 (en) | 2022-08-09 |
| CN112877592A (en) | 2021-06-01 |
| TW202120697A (en) | 2021-06-01 |
| ZA202205445B (en) | 2023-01-25 |
| JP2023503151A (en) | 2023-01-26 |
| WO2021103805A1 (en) | 2021-06-03 |
| TWI780518B (en) | 2022-10-11 |
| MX2022006471A (en) | 2022-09-09 |
| CN112877592B (en) | 2022-06-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA3159490A1 (en) | Thermoformed component having excellent coating adhesion, and manufacturing method therefor | |
| CN106466697B (en) | Hot stamped Steel products with an aluminum or aluminum alloy coating and method for the production thereof | |
| KR102301116B1 (en) | Method for producing a steel component having a metal coating protecting it against corrosion, and steel component | |
| KR101008042B1 (en) | Aluminum Coated Steel Sheet with Excellent Corrosion Resistance and Hot Press Formed Article Using The Same and Manufacturing Method Thereof | |
| KR101829854B1 (en) | Hot stamp-molded high-strength component having excellent corrosion resistance after coating, and method for manufacturing same | |
| KR101259258B1 (en) | Aluminum-plated steel sheet for hot pressing with rapid heating, process for producing same, and method of hot-pressing same with rapid heating | |
| CA2871325C (en) | Automotive components formed of sheet metal coated with a non-metallic coating | |
| EP4148160A1 (en) | Coated steel sheet with thin aluminum alloy coating and coating method therefor | |
| KR20180131944A (en) | Steel sheet for hot press formed member having excellent paint adhesion and corrosion resistance after painted and method for manufacturing thereof | |
| US20230002850A1 (en) | High-performance thermoformed component provided with coating, and manufacturing method therefor | |
| EP3015572B1 (en) | Hot press formed part manufacturing process | |
| WO2021084377A1 (en) | A press hardening method | |
| KR20190077928A (en) | Steel sheet plated with fe-al alloy having improved corrosion resistance, manufacturing method thereof and hot press formed part manufactured therefrom | |
| CN111434405B (en) | Preparation method and device of hot stamping part | |
| CN116815096A (en) | Aluminum alloy system coating thermoforming part and preparation method thereof | |
| CN115369314B (en) | Aging-resistant low-waviness bake-hardening hot-dip galvanized steel plate and manufacturing method thereof | |
| KR101491098B1 (en) | Magnesium plate and method for manufacturing the same | |
| KR101461744B1 (en) | Manufacturing method for hot press formed products of coated steel and hot press formed products using the same | |
| CN111434404A (en) | Method and device for manufacturing corrosion-resistant hot stamping part | |
| KR20160080248A (en) | Method for manufacturing the thin steel for sandwich steel by using hot press forming and manufacturing sandwich steel, and sandwich steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request |
Effective date: 20220818 |
|
| EEER | Examination request |
Effective date: 20220818 |
|
| EEER | Examination request |
Effective date: 20220818 |
|
| EEER | Examination request |
Effective date: 20220818 |