EP2241641A2 - Procédé de fabrication de composants durcis par une presse - Google Patents

Procédé de fabrication de composants durcis par une presse Download PDF

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Publication number
EP2241641A2
EP2241641A2 EP10002910A EP10002910A EP2241641A2 EP 2241641 A2 EP2241641 A2 EP 2241641A2 EP 10002910 A EP10002910 A EP 10002910A EP 10002910 A EP10002910 A EP 10002910A EP 2241641 A2 EP2241641 A2 EP 2241641A2
Authority
EP
European Patent Office
Prior art keywords
component
press
plate
heat treatment
hardening
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.)
Granted
Application number
EP10002910A
Other languages
German (de)
English (en)
Other versions
EP2241641B1 (fr
EP2241641A3 (fr
Inventor
Martin Pohl
Michael Wibbeke
Wilfried Rostek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Benteler Automobiltechnik GmbH
Original Assignee
Benteler Automobiltechnik GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Benteler Automobiltechnik GmbH filed Critical Benteler Automobiltechnik GmbH
Publication of EP2241641A2 publication Critical patent/EP2241641A2/fr
Publication of EP2241641A3 publication Critical patent/EP2241641A3/fr
Application granted granted Critical
Publication of EP2241641B1 publication Critical patent/EP2241641B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • 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
    • B21D53/00—Making other particular articles
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
    • 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
    • C21D1/74—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
    • 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
    • C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0257—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment with diffusion of elements, e.g. decarburising, nitriding
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0405—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing of ferrous alloys
    • 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
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • 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
    • C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
    • 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
    • C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
    • C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes

Definitions

  • the invention relates to a method for the production of press-hardened components, in particular body parts of motor vehicles, from a blank of uncured, heat-transformable steel sheet, in which the board is hot-formed and hardened in a press tool for sheet metal profile.
  • DE 24 52 486 A1 includes a method for producing a hardened sheet metal profile from a board in a prior art press hardening process.
  • a board made of a hardenable steel is heated to hardening temperature and then hot-formed in a press tool and then hardened while the sheet-metal profile remains in the press tool. Since the sheet metal profile is clamped in the press tool during cooling in the course of the curing process, a product with good dimensional stability is obtained.
  • Hot forming and tempering in the press tool is a rational operation due to the combination of forming and tempering operation in a tool.
  • WO 2005/018848 A1 Such methods in which either a first cold forming operation, in particular a drawing process, a component blank is formed, which is then marginally trimmed on a component to be produced approximately corresponding edge contour, or the press-hardened component blank is after the forming and curing process edge on a the to be produced component corresponding edge contour cropped. In a subsequent step, the press-hardened component blanks are coated with a corrosion protection layer.
  • the profile components made of sheet steel, in particular motor vehicle component are provided with a surface coating for protection against corrosion. It is known to apply the surface coating to the component by means of a thermal diffusion method. This too is among others in the WO 2005/018848 A1 explained.
  • a layer of zinc or a zinc alloy is applied as a surface coating.
  • the invention is based on the object of the prior art to further streamline the approach in the production of press-hardened components.
  • a printed circuit board is produced having a geometry which substantially corresponds to the unwinding of the finished component.
  • the geometry The assembled board corresponds to the development of the finished component, taking into account geometric changes to the component by the forming process.
  • this prefabricated board is formed in a hot forming tool to the component and press-hardened, after which the component is provided with a surface coating.
  • the formed and press-hardened component has the final geometry after the forming process.
  • the component is cooled down in the hot forming tool for the purpose of hardening.
  • the temperature of the component is lowered, to a temperature less than or equal to 300 ° C, preferably to a temperature between 180 ° C and 300 ° C, in particular to about 200 ° C. At this temperature range, warping of the deformed and press-hardened component can be avoided.
  • the surface coating of the press-hardened component is applied by a diffusion process with a heat treatment of the component, in which the component is brought into contact with a metal powder.
  • the profile component is subjected to a heat treatment at a temperature between 350 ° C and 410 ° C over a period of 0.25 h to 3.0 h, wherein by a diffusion process between the steel sheet and the metal powder solid, cohesive iron-zinc alloy layers be formed with a layer thickness between 5 microns and 40 microns.
  • the three-dimensionally shaped components in particular body components such as B-pillars, door impact beams or side skirts, can be provided with a high-quality, durable coating, which on the one hand ensures high corrosion protection and on the other hand is weldable.
  • the profile components can be coated without incurring adverse strength losses due to the heat treatment.
  • a metal powder with the main constituent zinc or zinc oxide is used, which optionally contains additives for improving the chemical and physical properties of the coating.
  • the surface coating produced is uniform and relatively ductile.
  • the press-hardened profile components are subjected to a surface treatment.
  • a cleaning of the profile components takes place, so that the profile components are metallic blank. This can be done for example by a pickling. Preference is given to a dry cleaning, in particular sand blasting.
  • the thickness of the coating depends largely on the temperature and the treatment time.
  • the heat treatment takes place at a temperature between 350 ° C. and 410 ° C., in particular in a temperature range from 370 ° C. to 400 ° C., preferably at approximately 380 ° C.
  • the coating process it is also planned in particular to utilize the residual heat of the component still present from the hot-forming process and to go into the coating process at this starting temperature or intermediate temperature.
  • the formed and press-hardened component is then transferred into the coating process at the temperature which it has after leaving the hot-forming tool and which lies between 180 ° C. and 300 ° C., in particular at about 200 ° C., according to the invention. This leads to a further increase in the efficiency of the process and shortens the time for the heat treatment in the context of the surface coating process.
  • the heat treatment is divided into a heating phase until reaching the treatment temperature and a holding phase in which the treatment temperature is maintained for a certain period of time.
  • the heating phase extends over a period of time that is less than or equal to 0.25 hours.
  • the Heat treatment is completed after the heating phase. Basically, therefore, it can be assumed that a holding phase, which extends over a period of 0 h to 2 h.
  • the holding temperature is in the specified temperature range above 350 ° C.
  • the coated profile components are cooled uniformly.
  • the cooling should be less than 1 h.
  • the cooling can basically be done in air.
  • a cooling takes place actively by applying the coated profile components with a cooling medium.
  • active cooling by applying the coated profile components to a cooling medium is considered particularly expedient, in which the coated components after the heat treatment up to a temperature ⁇ 300 ° C, preferably to a temperature between 180 ° C and 300 ° C. , in particular about 200 ° C are cooled.
  • the aim of this active cooling measure is to avoid oxide layer formation on the surface of the coated components.
  • Protective or inert gas is preferably used as the cooling medium.
  • the cooling takes place under an inert gas atmosphere, ie in the treatment space in which the components are brought into contact with the metal powder and the surface coating is produced.
  • the entire edge contour cutting on the output board before the press hardening After forming and / or press hardening, no edge-side contour cutting is carried out. It is possible, however, that the board is punched before forming or after forming.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Heat Treatment Of Articles (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
EP20100002910 2009-04-16 2010-03-19 Procédé de fabrication de composants durcis par une presse Not-in-force EP2241641B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009017326A DE102009017326A1 (de) 2009-04-16 2009-04-16 Verfahren zur Herstellung von pressgehärteten Bauteilen

Publications (3)

Publication Number Publication Date
EP2241641A2 true EP2241641A2 (fr) 2010-10-20
EP2241641A3 EP2241641A3 (fr) 2012-05-02
EP2241641B1 EP2241641B1 (fr) 2015-04-29

Family

ID=42463316

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100002910 Not-in-force EP2241641B1 (fr) 2009-04-16 2010-03-19 Procédé de fabrication de composants durcis par une presse

Country Status (4)

Country Link
US (1) US9822421B2 (fr)
EP (1) EP2241641B1 (fr)
DE (1) DE102009017326A1 (fr)
ES (1) ES2538341T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120137502A1 (en) * 2003-07-22 2012-06-07 Z.A.T. Zinc Anticorosion Technologies Sa Press-hardened component and associated production method
WO2012085251A3 (fr) * 2010-12-24 2012-08-16 Voestalpine Stahl Gmbh Procédé de fabrication de composants durcis

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI268806B (en) * 1999-09-15 2006-12-21 Rohm & Haas A catalyst useful for oxidation of alkanes
DE102013214250A1 (de) * 2013-07-22 2015-01-22 Bayerische Motoren Werke Aktiengesellschaft Pressgehärtetes Blechbauteil mit Lochung und Verfahren zu dessen Herstellung
WO2017017484A1 (fr) * 2015-07-30 2017-02-02 Arcelormittal Procédé pour la fabrication d'une pièce durcie qui ne présente pas de problèmes lme (liquide metal embrittlement - fragilité par les métaux liquides)
WO2017017485A1 (fr) 2015-07-30 2017-02-02 Arcelormittal Procédé de fabrication d'une pièce phosphatable à partir d'une tôle d'acier revêtue d'un revêtement métallique à base d'aluminium
WO2017017483A1 (fr) 2015-07-30 2017-02-02 Arcelormittal Tôle d'acier revêtue d'un revêtement métallique à base d'aluminium
DE102015220347B4 (de) * 2015-10-20 2018-06-21 Thyssenkrupp Ag Verfahren zum Herstellen eines Bauteils für ein Fahrzeug
CN111434405B (zh) * 2019-06-12 2021-10-15 苏州普热斯勒先进成型技术有限公司 一种热冲压件的制备方法及装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2452486A1 (de) 1973-11-06 1975-05-07 Norrbottens Jaernverk Ab Verfahren zur herstellung eines werkstueckes aus gehaertetem stahl
JPH0643602A (ja) 1991-06-13 1994-02-18 Dainippon Ink & Chem Inc 超硬調ネガ画像の形成方法およびそれに用いるハロゲン化銀感光材料および現像剤
WO2005018848A1 (fr) 2003-07-22 2005-03-03 Daimlerchrysler Ag Élément trempé à la presse et procédé de fabrication associé
DE102006049046A1 (de) 2006-10-18 2008-04-24 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Werkzeug und Werkzeugmaschine zum Bearbeiten von plattenartigen Werkstücken, insbesondere von Blechen
DE102007039096A1 (de) 2007-08-18 2009-02-19 Audi Ag Verfahren und Vorrichtung zum Warmumformen und Härten eines Blechbauteils
CN102189173A (zh) 2011-03-09 2011-09-21 南京工业职业技术学院 支架无载体一模二件成形方法

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US4130933A (en) * 1977-09-12 1978-12-26 Arco Industries Corporation Forming and coating apparatus
US5856378A (en) * 1988-12-02 1999-01-05 Courtaulds Coatings (Holdings) Limited Powder coating compositions
DE10049660B4 (de) * 2000-10-07 2005-02-24 Daimlerchrysler Ag Verfahren zum Herstellen lokal verstärkter Blechumformteile
US7254977B2 (en) * 2004-01-20 2007-08-14 Pullman Industries, Inc. Coolant delivery system and continuous fabrication apparatus which includes the system
DE102005028010B3 (de) * 2005-06-16 2006-07-20 Benteler Automobiltechnik Gmbh Verfahren und Presse zum Warmformen
SE530228C2 (sv) * 2006-08-25 2008-04-01 Gestamp Hardtech Ab Sätt att varmforma och härda en plåtdetalj, samt en B-stolpe till ett fordon

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2452486A1 (de) 1973-11-06 1975-05-07 Norrbottens Jaernverk Ab Verfahren zur herstellung eines werkstueckes aus gehaertetem stahl
JPH0643602A (ja) 1991-06-13 1994-02-18 Dainippon Ink & Chem Inc 超硬調ネガ画像の形成方法およびそれに用いるハロゲン化銀感光材料および現像剤
WO2005018848A1 (fr) 2003-07-22 2005-03-03 Daimlerchrysler Ag Élément trempé à la presse et procédé de fabrication associé
DE102006049046A1 (de) 2006-10-18 2008-04-24 Trumpf Werkzeugmaschinen Gmbh + Co. Kg Werkzeug und Werkzeugmaschine zum Bearbeiten von plattenartigen Werkstücken, insbesondere von Blechen
DE102007039096A1 (de) 2007-08-18 2009-02-19 Audi Ag Verfahren und Vorrichtung zum Warmumformen und Härten eines Blechbauteils
CN102189173A (zh) 2011-03-09 2011-09-21 南京工业职业技术学院 支架无载体一模二件成形方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20120137502A1 (en) * 2003-07-22 2012-06-07 Z.A.T. Zinc Anticorosion Technologies Sa Press-hardened component and associated production method
WO2012085251A3 (fr) * 2010-12-24 2012-08-16 Voestalpine Stahl Gmbh Procédé de fabrication de composants durcis

Also Published As

Publication number Publication date
ES2538341T3 (es) 2015-06-19
EP2241641B1 (fr) 2015-04-29
US20100319426A1 (en) 2010-12-23
EP2241641A3 (fr) 2012-05-02
DE102009017326A1 (de) 2010-10-21
US9822421B2 (en) 2017-11-21

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