EP3948130C0 - Rotary furnace for heat-treating metal workpieces, and corresponding heat treatment method - Google Patents

Rotary furnace for heat-treating metal workpieces, and corresponding heat treatment method

Info

Publication number
EP3948130C0
EP3948130C0 EP20715015.2A EP20715015A EP3948130C0 EP 3948130 C0 EP3948130 C0 EP 3948130C0 EP 20715015 A EP20715015 A EP 20715015A EP 3948130 C0 EP3948130 C0 EP 3948130C0
Authority
EP
European Patent Office
Prior art keywords
treatment method
rotary furnace
heat
metal workpieces
treating metal
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.)
Active
Application number
EP20715015.2A
Other languages
German (de)
French (fr)
Other versions
EP3948130A1 (en
EP3948130B1 (en
Inventor
Thomas Berrenberg
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.)
Schwartz GmbH
Original Assignee
Schwartz 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 Schwartz GmbH filed Critical Schwartz GmbH
Publication of EP3948130A1 publication Critical patent/EP3948130A1/en
Application granted granted Critical
Publication of EP3948130C0 publication Critical patent/EP3948130C0/en
Publication of EP3948130B1 publication Critical patent/EP3948130B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/16—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a circular or arcuate path
    • 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
    • C21D1/34—Methods of heating
    • 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
    • C21D1/767—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material with forced gas circulation; Reheating thereof
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0006—Details, accessories not peculiar to any of the following furnaces
    • C21D9/0025—Supports; Baskets; Containers; Covers
    • 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
    • C21D9/0037—Rotary furnaces with vertical axis; Furnaces with rotating floor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/3005—Details, accessories, or equipment peculiar to furnaces of these types arrangements for circulating gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/04—Circulating atmospheres by mechanical means

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Tunnel Furnaces (AREA)
EP20715015.2A 2019-04-04 2020-03-25 Rotary furnace for heat-treating metal workpieces, and corresponding heat treatment method Active EP3948130B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019108873.9A DE102019108873A1 (en) 2019-04-04 2019-04-04 Rotary hearth furnace for the heat treatment of metallic workpieces and the corresponding process for heat treatment
PCT/EP2020/058377 WO2020200963A1 (en) 2019-04-04 2020-03-25 Rotary furnace for heat-treating metal workpieces, and corresponding heat treatment method

Publications (3)

Publication Number Publication Date
EP3948130A1 EP3948130A1 (en) 2022-02-09
EP3948130C0 true EP3948130C0 (en) 2024-05-29
EP3948130B1 EP3948130B1 (en) 2024-05-29

Family

ID=70050103

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20715015.2A Active EP3948130B1 (en) 2019-04-04 2020-03-25 Rotary furnace for heat-treating metal workpieces, and corresponding heat treatment method

Country Status (3)

Country Link
EP (1) EP3948130B1 (en)
DE (1) DE102019108873A1 (en)
WO (1) WO2020200963A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113817908B (en) * 2021-08-13 2023-06-30 苏州新长光热能科技有限公司 Annealing furnace

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3063878A (en) * 1958-05-07 1962-11-13 Wilson Lee Method of and apparatus for annealing
DE3231225A1 (en) * 1982-08-21 1984-03-01 Verwaltungsgesellschaft Heinrich Neitz GmbH & Co KG, 4930 Detmold Heat treatment oven and performance of thermal processes for workpieces of ferrous materials and non-ferrous metals
JPS60262924A (en) * 1984-06-08 1985-12-26 Rozai Kogyo Kk Rotary-hearth coil heating furnace
WO2006021994A1 (en) * 2004-08-25 2006-03-02 Nippon Furnace Kogyo Kaisha, Ltd. Hot air circulation furnance
US20060103059A1 (en) * 2004-10-29 2006-05-18 Crafton Scott P High pressure heat treatment system
JP4374377B2 (en) * 2006-11-30 2009-12-02 ファーネス重工株式会社 Hot air circulation furnace
JP5384226B2 (en) * 2009-06-29 2014-01-08 三建産業株式会社 Hot air heating device
WO2013118261A1 (en) * 2012-02-08 2013-08-15 株式会社正英製作所 Heat treatment furnace
DE102015203376A1 (en) * 2014-02-26 2015-08-27 Sms Siemag Ag Method and plant for the thermal treatment of elongated, flat metallic material, in particular aluminum ingots, in a ring hearth furnace

Also Published As

Publication number Publication date
EP3948130A1 (en) 2022-02-09
EP3948130B1 (en) 2024-05-29
DE102019108873A1 (en) 2020-10-08
WO2020200963A1 (en) 2020-10-08

Similar Documents

Publication Publication Date Title
EP3926065A4 (en) Hot work die steel, heat treatment method thereof and hot work die
EP3919201C0 (en) Hot metal gas forming and quenching system and process therefor
ZA201905140B (en) Hot metal gas forming and heat treatment method for thin-walled hollow ti2alnb-based alloy component
PL3282024T3 (en) Batch furnace for annealing product and method for heat treatment
HK1258146A1 (en) Heat treatment device, heat treatment method, laser annealing device, and laser annealing method
PL3676408T3 (en) Method for heating a metal component to a target temperature and corresponding roller hearth furnace
MX2018008996A (en) Method and device for the heat treatment of a metal component.
EP3896375A4 (en) Heat treatment furnace
EP3564201A4 (en) Brick for blast furnace hearths and blast furnace hearth using same, and method for producing brick for blast furnace hearths
EP3948130C0 (en) Rotary furnace for heat-treating metal workpieces, and corresponding heat treatment method
PT4034685T (en) Method and device for producing direct reduced, carburized metal
EP3438294A4 (en) Heat treatment apparatus, heat treatment method for steel material, and hot bending method for steel material
EP4023985A4 (en) Heat treatment furnace
HUE062965T2 (en) Compact aluminium alloy heat treatment method
GB2607681B (en) Method for heat treating an object
EP3231523A4 (en) Heat treatment method for ahss hot rolled coils, and cold rolling method using same and heat treatment apparatus
EP3763833A4 (en) Workpiece heat treatment method and heat treatment device
EP3626839A4 (en) Device and method for continuous heat treatment of alloy workpiece or metal workpiece
ZA202205809B (en) Method for treating a part made of ferrous metal, and part made of ferrous metal
EP2832869A4 (en) Method for heat-treating metal pipes, metal pipe, and heat treatment furnace
IL281151A (en) Hardening method and apparatus, particularly applicable to metal and/or ceramics
PL3086069T3 (en) Furnace for melting and treating metal and metallic waste and method therefor
PL3978854T3 (en) Tunnel furnace for heat treatment of products, a method for operating such a tunnel furnace and the use of such a tunnel furnace
PL3078928T3 (en) Process gas treatment device for the treatment of process gas for an industrial furnace installation, and industrial furnace installation for gas carburizing and for hardening of metallic workpieces
HUE064942T2 (en) Treatment plant and method for treating workpieces

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

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

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

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: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20211026

AK Designated contracting states

Kind code of ref document: A1

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

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230516

REG Reference to a national code

Ref document number: 502020008145

Country of ref document: DE

Ref country code: DE

Ref legal event code: R079

Free format text: PREVIOUS MAIN CLASS: F27B0009160000

Ipc: C21D0001340000

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

RIC1 Information provided on ipc code assigned before grant

Ipc: C21D 1/767 20060101ALI20231026BHEP

Ipc: C21D 1/34 20060101AFI20231026BHEP

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

INTG Intention to grant announced

Effective date: 20231129

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTC Intention to grant announced (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20240131

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

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

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502020008145

Country of ref document: DE