EP4321631A3 - Molding method, heat treatment system, and molded product - Google Patents

Molding method, heat treatment system, and molded product Download PDF

Info

Publication number
EP4321631A3
EP4321631A3 EP23205839.6A EP23205839A EP4321631A3 EP 4321631 A3 EP4321631 A3 EP 4321631A3 EP 23205839 A EP23205839 A EP 23205839A EP 4321631 A3 EP4321631 A3 EP 4321631A3
Authority
EP
European Patent Office
Prior art keywords
region
steel sheet
heat treatment
molded product
treatment system
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
Application number
EP23205839.6A
Other languages
German (de)
French (fr)
Other versions
EP4321631A2 (en
Inventor
Shun TAKAOKA
Takumi Satou
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.)
G Tekt Corp
Original Assignee
G Tekt Corp
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 G Tekt Corp filed Critical G Tekt Corp
Publication of EP4321631A2 publication Critical patent/EP4321631A2/en
Publication of EP4321631A3 publication Critical patent/EP4321631A3/en
Pending legal-status Critical Current

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
    • 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
    • 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
    • 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
    • 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
    • C21D8/0294—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a localised 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
    • 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
    • C21D2211/001—Austenite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/009—Pearlite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

In heating step S101, a steel sheet is heated and made in an austenite state. In heating step S101, the whole region of the steel sheet is evenly heated, and the whole region of the steel sheet is made in the austenite state. In cooling step S102, only a first region set on the steel sheet in the austenite state is forcibly cooled (rapidly cooled) within a temperature range of a range where martensitic transformation does not occur. In cooling step S102, a second region other than the first region is cooled by natural cooling to maintain a state in which a temperature is higher than in the first region.
EP23205839.6A 2021-03-30 2022-03-30 Molding method, heat treatment system, and molded product Pending EP4321631A3 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2021056979A JP7052116B1 (en) 2021-03-30 2021-03-30 Molding method
PCT/JP2022/015940 WO2022210868A1 (en) 2021-03-30 2022-03-30 Molding method, heat treatment system, and molded product
EP22781078.5A EP4316684A1 (en) 2021-03-30 2022-03-30 Molding method, heat treatment system, and molded product

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP22781078.5A Division EP4316684A1 (en) 2021-03-30 2022-03-30 Molding method, heat treatment system, and molded product
EP22781078.5A Division-Into EP4316684A1 (en) 2021-03-30 2022-03-30 Molding method, heat treatment system, and molded product

Publications (2)

Publication Number Publication Date
EP4321631A2 EP4321631A2 (en) 2024-02-14
EP4321631A3 true EP4321631A3 (en) 2024-02-28

Family

ID=81259573

Family Applications (2)

Application Number Title Priority Date Filing Date
EP22781078.5A Pending EP4316684A1 (en) 2021-03-30 2022-03-30 Molding method, heat treatment system, and molded product
EP23205839.6A Pending EP4321631A3 (en) 2021-03-30 2022-03-30 Molding method, heat treatment system, and molded product

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP22781078.5A Pending EP4316684A1 (en) 2021-03-30 2022-03-30 Molding method, heat treatment system, and molded product

Country Status (4)

Country Link
US (2) US20240167115A1 (en)
EP (2) EP4316684A1 (en)
JP (1) JP7052116B1 (en)
WO (1) WO2022210868A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10208216C1 (en) * 2002-02-26 2003-03-27 Benteler Automobiltechnik Gmbh Production of a hardened metallic component used as vehicle component comprises heating a plate or a pre-molded component to an austenitizing temperature, and feeding via a transport path while quenching parts of plate or component
EP2365100A2 (en) * 2010-03-04 2011-09-14 Kirchhoff Automotive Deutschland GmbH Method for producing a molded part having at least two structure zones with different ductilities
DE202014010318U1 (en) * 2014-01-23 2015-04-01 Eva Schwartz Heat treatment device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101277874B1 (en) * 2011-03-31 2013-06-21 주식회사 포스코 Hot forming parts having strength distribution and method for manufacturing the same
JP5380632B1 (en) * 2012-03-13 2014-01-08 株式会社アステア Method for strengthening steel plate members
JP6357196B2 (en) 2016-07-19 2018-07-11 東亜工業株式会社 Hot press device, hot press method, and automobile body part manufacturing method
JP2019013936A (en) * 2017-07-04 2019-01-31 東亜工業株式会社 Method for manufacturing press molded object

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10208216C1 (en) * 2002-02-26 2003-03-27 Benteler Automobiltechnik Gmbh Production of a hardened metallic component used as vehicle component comprises heating a plate or a pre-molded component to an austenitizing temperature, and feeding via a transport path while quenching parts of plate or component
EP2365100A2 (en) * 2010-03-04 2011-09-14 Kirchhoff Automotive Deutschland GmbH Method for producing a molded part having at least two structure zones with different ductilities
DE202014010318U1 (en) * 2014-01-23 2015-04-01 Eva Schwartz Heat treatment device

Also Published As

Publication number Publication date
US20240043957A1 (en) 2024-02-08
EP4321631A2 (en) 2024-02-14
US20240167115A1 (en) 2024-05-23
EP4316684A1 (en) 2024-02-07
JP7052116B1 (en) 2022-04-11
JP2022154099A (en) 2022-10-13
WO2022210868A1 (en) 2022-10-06

Similar Documents

Publication Publication Date Title
CN102039349A (en) Method and thermal recasting assembly for producing a hardened, thermally recast workpiece
CN105478559A (en) MEthod and press for manufacturing cured sheet metal components, in sections at least
CN104726659B (en) Thermal treatment process for improving microscopic coarse grains and microstructures of H13 forged piece
CN103028645A (en) Hot stamping forming method for variable strength distribution strong-strength steel plate part
CN104668326A (en) Hot stamping method for performance gradient distribution of high-strength steel parts
CN107058708A (en) A kind of spring leaf class part method for controlling heat treatment deformation
CN102883833A (en) Hot press molding method enabling hardness adjustment
MX2019007946A (en) Hot stamp molded body and method for producing same.
CN104942109A (en) Method and device for producing variable-strength heat forming part
EP4321631A3 (en) Molding method, heat treatment system, and molded product
CN107321832A (en) A kind of process of steady decrease thermoforming temperatures
CN108774675A (en) A kind of accurate heat treatment quenching process of high-carbon chromium tool steel precision component
CN104789748A (en) Bearing steel tube spheroidizing annealing method
CN106541563A (en) Resin plate multiple spot hot forming even temperature control and loading method
CN105385828A (en) Quenching-tempering heat treatment method for seamless steel tubes
DE60006670D1 (en) HEAT TREATMENT FOR MOLDED ALUMINUM ALLOY PRODUCTS
CN1073982A (en) Normalizing pre-treatment technology with double preheat
KR20180001921A (en) Partial softening hot stamping and trimming method
CN105506248B (en) A kind of medium and high carbon steel crystal grain refinement heat treatment method
CN206677038U (en) A kind of split mould of the drop stamping with cooling structure
CN104152638B (en) Micro-deformation quenching heat treatment process of cold work die steel thin workpiece
CN102634646B (en) Special temperature-control cooling thermal treatment technology
CN104164549A (en) Pre-hardening method of steel plate of hardening and tempering low-alloy plastic mould steel
CN106119509B (en) A kind of vacuum Asia wet of KMN materials semi-open type 3 d impeller is quenched technique
KR20150124793A (en) Manufacturing method for the elimination of springback and distortion of hot stamped part with tailored property

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN PUBLISHED

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AC Divisional application: reference to earlier application

Ref document number: 4316684

Country of ref document: EP

Kind code of ref document: P

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RIC1 Information provided on ipc code assigned before grant

Ipc: C21D 9/46 20060101ALI20240119BHEP

Ipc: B21D 22/20 20060101ALI20240119BHEP

Ipc: B21D 22/02 20060101ALI20240119BHEP

Ipc: C21D 1/673 20060101ALI20240119BHEP

Ipc: C21D 1/18 20060101AFI20240119BHEP