EP2110448A3 - Method and circulation oven for heating workpieces - Google Patents

Method and circulation oven for heating workpieces Download PDF

Info

Publication number
EP2110448A3
EP2110448A3 EP09005231A EP09005231A EP2110448A3 EP 2110448 A3 EP2110448 A3 EP 2110448A3 EP 09005231 A EP09005231 A EP 09005231A EP 09005231 A EP09005231 A EP 09005231A EP 2110448 A3 EP2110448 A3 EP 2110448A3
Authority
EP
European Patent Office
Prior art keywords
workpiece
heating
oven
furnace
continuous furnace
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
EP09005231A
Other languages
German (de)
French (fr)
Other versions
EP2110448A2 (en
EP2110448B1 (en
Inventor
Rolf-Josef Schwartz
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
Individual
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 Individual filed Critical Individual
Publication of EP2110448A2 publication Critical patent/EP2110448A2/en
Publication of EP2110448A3 publication Critical patent/EP2110448A3/en
Application granted granted Critical
Publication of EP2110448B1 publication Critical patent/EP2110448B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0056Furnaces through which the charge is moved in a horizontal straight path
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0068Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14Furnaces 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
    • F27B9/20Furnaces 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 substantially straight path tunnel furnace
    • F27B9/24Furnaces 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 substantially straight path tunnel furnace being carried by a conveyor
    • F27B9/2407Furnaces 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 substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollers (roller hearth furnace)
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14Furnaces 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
    • F27B9/20Furnaces 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 substantially straight path tunnel furnace
    • F27B9/24Furnaces 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 substantially straight path tunnel furnace being carried by a conveyor
    • F27B9/2469Furnaces 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 substantially straight path tunnel furnace being carried by a conveyor the conveyor being constituted by rollable bodies
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30Details, accessories, or equipment peculiar to furnaces of these types
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D5/00Supports, screens, or the like for the charge within the furnace
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/62Quenching devices
    • C21D1/673Quenching devices for die quenching
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING 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
    • C21D2221/00Treating localised areas of an article

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Articles (AREA)
  • Tunnel Furnaces (AREA)

Abstract

Die Erfindung betrifft ein Verfahren zum Erwärmen wenigstens eines Werkstücks (20) in einem Ofen (10), bei dem das Werkstück (20) von Heizmitteln (11) erwärmt wird, wobei nach der Erwärmung des gesamten Werkstücks (20) in einem ersten Schritt eine Bewegung des Werkstücks (20) soweit aus dem Ofen (10) heraus erfolgt, dass sich ein erster Teilbereich (21) des Werkstücks (20) noch innerhalb des Ofens (10) befindet, während sich ein zweiter Teilbereich (22) des Werkstücks (20) bereits außerhalb des Ofens (10) befindet. Das Werkstück (20) wird für einen bestimmten Zeitraum in dieser Position gehalten und das gesamte Werkstück (20) anschließend aus dem Ofen (10) heraus bewegt. Insbesondere wird das Verfahren in einem Durchlaufofen durchgeführt, wobei das Werkstück (20) eine Heizstrecke durchläuft und das Werkstück (20) durch eine Transporteinrichtung (30) soweit aus der Heizstrecke des Durchlaufofens (10) heraus bewegt wird, dass sich ein erster Teilbereich (21) des Werkstücks (20) noch innerhalb der Heizstrecke befindet, während sich ein zweiter Teilbereich (22) des Werkstücks (20) bereits außerhalb der Heizstrecke befindet. In dieser Position des Werkstücks (20) wird die Bewegung der Transporteinrichtung (30) für einen bestimmten Zeitraum unterbrochen. So stellen sich in den beiden Teilbereichen (21;22) unterschiedliche Temperaturen ein. Die Erfindung betrifft ferner einen zugehörigen Durchlaufofen (10) zur Durchführung des Verfahrens.

Figure imgaf001
The invention relates to a method for heating at least one workpiece (20) in an oven (10), in which the workpiece (20) is heated by heating means (11), wherein after heating the entire workpiece (20) in a first step Movement of the workpiece (20) as far out of the oven (10) out that a first portion (21) of the workpiece (20) is still within the furnace (10), while a second portion (22) of the workpiece (20 ) is already outside the furnace (10). The workpiece (20) is held in this position for a certain period of time and then the entire workpiece (20) is moved out of the oven (10). In particular, the method is carried out in a continuous furnace, wherein the workpiece (20) passes through a heating section and the workpiece (20) by a transport device (30) as far out of the heating section of the continuous furnace (10) moves out, that a first portion (21 ) of the workpiece (20) is still within the heating path, while a second portion (22) of the workpiece (20) is already outside the heating path. In this position of the workpiece (20), the movement of the transport device (30) is interrupted for a certain period of time. Thus, different temperatures are established in the two subregions (21; 22). The invention further relates to an associated continuous furnace (10) for carrying out the method.
Figure imgaf001

EP09005231.7A 2008-04-17 2009-04-09 Method and continuous furnace for heating workpieces Active EP2110448B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008019471 2008-04-17
DE102008055980A DE102008055980A1 (en) 2008-04-17 2008-11-05 Process and continuous furnace for heating workpieces

Publications (3)

Publication Number Publication Date
EP2110448A2 EP2110448A2 (en) 2009-10-21
EP2110448A3 true EP2110448A3 (en) 2013-02-13
EP2110448B1 EP2110448B1 (en) 2018-10-24

Family

ID=40902112

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09005231.7A Active EP2110448B1 (en) 2008-04-17 2009-04-09 Method and continuous furnace for heating workpieces

Country Status (4)

Country Link
US (1) US8529250B2 (en)
EP (1) EP2110448B1 (en)
DE (1) DE102008055980A1 (en)
ES (1) ES2707225T3 (en)

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Publication number Priority date Publication date Assignee Title
WO2010089103A1 (en) 2009-02-03 2010-08-12 Magna Ihv Gesellschaft Für Innenhochdruckverfahren Mbh Method and furnace for making a metal workpiece with regions of different ductility
US20110059412A1 (en) * 2009-09-09 2011-03-10 Thomas Robert Wiedemeier Device and process for eradicating pests in wood
EP2336374A1 (en) * 2009-12-16 2011-06-22 Schwartz, Eva Method and device for heating and partially cooling workpieces in a continuous furnace
DE102010010156A1 (en) * 2010-03-04 2011-09-08 Kirchhoff Automotive Deutschland Gmbh Process for producing a molded part with at least two structural areas of different ductility
DE102011114764B4 (en) 2011-10-01 2016-04-21 Volkswagen Aktiengesellschaft Process for the production of form-hardened components and continuous furnace for heating a board provided for molding
DE102012001742A1 (en) * 2012-01-28 2013-08-01 Volkswagen Aktiengesellschaft Device, useful for heating, hot-forming and press-hardening of metal sheet workpieces, comprises a first heat station, a second heat station in which the workpieces are heated or held at a specified temperature, and a third heat station
DE102012103275A1 (en) * 2012-04-16 2013-10-17 Benteler Automobiltechnik Gmbh Laminated furnace plant and method for operating the laminated-bed furnace
DE102013104229B3 (en) 2013-04-25 2014-10-16 N. Bättenhausen Industrielle Wärme- und Elektrotechnik GmbH Device for press hardening of components
US10625323B2 (en) * 2016-02-19 2020-04-21 Ford Global Technologies, Llc Method for monitoring quality of hot stamped components
US10335845B2 (en) 2016-04-20 2019-07-02 Ford Global Technologies, Llc Hot-stamping furnace and method of hot stamping
US10350664B2 (en) 2016-06-30 2019-07-16 Ford Global Technologies, Llc Furnace assembly and method for hot-stamping vehicle components
JP2020507472A (en) * 2016-12-22 2020-03-12 オートテック・エンジニアリング・ソシエダッド・リミターダAutotech Engineering, S.L. Method and heating system for heating a blank
CN107837993B (en) * 2017-10-11 2021-03-02 盐城丰东特种炉业有限公司 Continuous workpiece gluing and curing process
DE102019004618A1 (en) * 2019-06-26 2020-12-31 Bsn Thermprozesstechnik Gmbh Roller hearth continuous furnace system and process for heating steel blanks coated with aluminum, silicon and / or zinc to hardening and pressing temperature
DE102020116593A1 (en) 2020-06-24 2021-12-30 AICHELIN Holding GmbH Heat treatment plant and process for the production of molded components
DE102020128925A1 (en) 2020-11-03 2022-05-05 Audi Aktiengesellschaft Method and system for quenching metal components
DE102020129506A1 (en) 2020-11-09 2022-05-12 Ebner Industrieofenbau Gmbh Centering device for metal blanks
EP4314683A1 (en) * 2021-04-16 2024-02-07 Aerospace Transmission Technologies GmbH Control device and method for controlling a system and a process for the thermal treatment of metal workpieces

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Also Published As

Publication number Publication date
US20090263758A1 (en) 2009-10-22
ES2707225T3 (en) 2019-04-03
DE102008055980A1 (en) 2009-10-29
EP2110448A2 (en) 2009-10-21
US8529250B2 (en) 2013-09-10
EP2110448B1 (en) 2018-10-24

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