DE502004009515D1 - Process for heat treating metal parts under inert gas - Google Patents

Process for heat treating metal parts under inert gas

Info

Publication number
DE502004009515D1
DE502004009515D1 DE502004009515T DE502004009515T DE502004009515D1 DE 502004009515 D1 DE502004009515 D1 DE 502004009515D1 DE 502004009515 T DE502004009515 T DE 502004009515T DE 502004009515 T DE502004009515 T DE 502004009515T DE 502004009515 D1 DE502004009515 D1 DE 502004009515D1
Authority
DE
Germany
Prior art keywords
inert gas
metal parts
heat treating
under inert
parts under
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.)
Expired - Lifetime
Application number
DE502004009515T
Other languages
German (de)
Inventor
Gerhard Bussmann
Manfred Szigan
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.)
LOI Thermprocess GmbH
Original Assignee
LOI Thermprocess 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 LOI Thermprocess GmbH filed Critical LOI Thermprocess GmbH
Publication of DE502004009515D1 publication Critical patent/DE502004009515D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C21D11/00—Process control or regulation for heat treatments
    • 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
    • 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
    • F27B11/00—Bell-type furnaces
    • 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
    • F27D19/00—Arrangements of controlling devices
    • 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)
  • General Engineering & Computer Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

A blower rotates continuously at constant speed in the protective gas atmosphere, driven by an electric motor. The current supplied to the motor is measured. During the holding phase (B) at constant high temperature, variation of current consumption by the motor forms a signal for control of the heat treatment process and/or for controlling the replacement rate of protective gas atmosphere.
DE502004009515T 2003-02-06 2004-02-02 Process for heat treating metal parts under inert gas Expired - Lifetime DE502004009515D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE10304945A DE10304945A1 (en) 2003-02-06 2003-02-06 Process for the heat treatment of metal parts under protective gas

Publications (1)

Publication Number Publication Date
DE502004009515D1 true DE502004009515D1 (en) 2009-07-09

Family

ID=32603187

Family Applications (2)

Application Number Title Priority Date Filing Date
DE10304945A Ceased DE10304945A1 (en) 2003-02-06 2003-02-06 Process for the heat treatment of metal parts under protective gas
DE502004009515T Expired - Lifetime DE502004009515D1 (en) 2003-02-06 2004-02-02 Process for heat treating metal parts under inert gas

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE10304945A Ceased DE10304945A1 (en) 2003-02-06 2003-02-06 Process for the heat treatment of metal parts under protective gas

Country Status (3)

Country Link
EP (1) EP1445338B1 (en)
AT (1) ATE432368T1 (en)
DE (2) DE10304945A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006025737B4 (en) * 2006-05-31 2016-09-22 Ald Vacuum Technologies Gmbh Device for gas quenching of heat-treated components and method for carrying out gas quenching
CN102809286B (en) * 2012-08-15 2014-12-10 中冶南方(武汉)威仕工业炉有限公司 Detecting and deviation rectifying method for plate of circular furnace

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE681750C (en) * 1935-12-08 1939-09-30 Siemens Schuckertwerke Akt Ges Process for controllable cooling of glow ovens
DE732569C (en) * 1940-07-23 1943-03-06 Siemens Ag Process for controllable cooling of glow ovens
GB653655A (en) * 1948-03-31 1951-05-23 Sunbeam Corp Heat treating furnace
US2789808A (en) * 1954-11-05 1957-04-23 Lee Wilson Method of and apparatus for controlling circulation of furnace atmosphere
US4141539A (en) 1977-11-03 1979-02-27 Alco Standard Corporation Heat treating furnace with load control for fan motor
AT395321B (en) 1983-07-05 1992-11-25 Ebner Ind Ofenbau METHOD FOR COOLING CHARGES IN DISCONTINUOUSLY WORKING INDUSTRIAL OVENS, ESPECIALLY STEEL WIRE OR TAPE BANDS IN DOME GLUES
US4543891A (en) * 1984-04-12 1985-10-01 Westinghouse Electric Corp. Apparatus and process for heat treatment
DD261380A5 (en) * 1987-07-24 1988-10-26 Ebner Industrieofenbau Gmbh,At METHOD FOR OPERATING A CONVECTION HOUSE GUN, INS. FOR STEEL WIRE OR TAPE
DE4129879A1 (en) * 1991-09-09 1993-03-11 Loi Ind Ofenanlagen METHOD FOR REPLACING THE ATMOSPHERES OF AN INDUSTRIAL STOVE

Also Published As

Publication number Publication date
ATE432368T1 (en) 2009-06-15
EP1445338B1 (en) 2009-05-27
DE10304945A1 (en) 2004-08-19
EP1445338A1 (en) 2004-08-11

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee
8370 Indication related to discontinuation of the patent is to be deleted