ATE129749T1 - METHOD FOR COOLING A BATCH OF WORKPIECES WITHIN A HEAT TREATMENT PROCESS. - Google Patents

METHOD FOR COOLING A BATCH OF WORKPIECES WITHIN A HEAT TREATMENT PROCESS.

Info

Publication number
ATE129749T1
ATE129749T1 AT92113958T AT92113958T ATE129749T1 AT E129749 T1 ATE129749 T1 AT E129749T1 AT 92113958 T AT92113958 T AT 92113958T AT 92113958 T AT92113958 T AT 92113958T AT E129749 T1 ATE129749 T1 AT E129749T1
Authority
AT
Austria
Prior art keywords
cooling
workpieces
heat treatment
temperatures
charge
Prior art date
Application number
AT92113958T
Other languages
German (de)
Inventor
Bernd Dr Edenhofer
Original Assignee
Ipsen Ind Int 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 Ipsen Ind Int Gmbh filed Critical Ipsen Ind Int Gmbh
Application granted granted Critical
Publication of ATE129749T1 publication Critical patent/ATE129749T1/en

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
    • C21D1/74—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
    • C21D11/00—Process control or regulation for heat treatments
    • C21D11/005—Process control or regulation for heat treatments for cooling
    • 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
    • C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
    • C21D1/613—Gases; Liquefied or solidified normally gaseous material

Landscapes

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

Abstract

In a method for cooling a charge of workpieces during a heat treatment process by means of gas cooling, the parameters governing the cooling process, for example cooling gas velocity and cooling gas pressure, are set as a function of temperatures determined during the cooling process. The cooling of the charge of workpieces is to be controlled in such a way that the desired heat treatment result is obtained on a predetermined workpiece cross-section, without temperature measurements being required at this or another point of the workpiece. For this purpose, the temperatures (T1, T2, T3, T0) are detected by means of at least one measuring probe, arranged in the charge chamber, of defined geometry and defined material. By means of a computer, the temperature/time curve in the workpiece is calculated on the basis of these temperatures (T1, T2, T3, T0) via the determination of the heat flux density and the heat transfer at the measuring probe. By means of a comparator device, the computer carries out a continuous comparison between the actual temperature curve (Tw,actual) calculated in this way and a preset desired temperature curve (Tw,desired). The parameters governing the cooling process are then controlled as a function of the result of this comparison. <IMAGE>
AT92113958T 1991-10-25 1992-08-17 METHOD FOR COOLING A BATCH OF WORKPIECES WITHIN A HEAT TREATMENT PROCESS. ATE129749T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4135313A DE4135313A1 (en) 1991-10-25 1991-10-25 METHOD FOR COOLING A WORKING PIECE BATCH WITHIN A HEAT TREATMENT PROCESS

Publications (1)

Publication Number Publication Date
ATE129749T1 true ATE129749T1 (en) 1995-11-15

Family

ID=6443453

Family Applications (1)

Application Number Title Priority Date Filing Date
AT92113958T ATE129749T1 (en) 1991-10-25 1992-08-17 METHOD FOR COOLING A BATCH OF WORKPIECES WITHIN A HEAT TREATMENT PROCESS.

Country Status (4)

Country Link
EP (1) EP0538575B1 (en)
AT (1) ATE129749T1 (en)
DE (2) DE4135313A1 (en)
ES (1) ES2081532T3 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT405190B (en) * 1996-03-29 1999-06-25 Ald Aichelin Ges M B H METHOD AND DEVICE FOR HEAT TREATING METAL WORKPIECES
DE19632195C1 (en) 1996-08-09 1998-03-05 Michael Fenne Process for the production of castings
DE10030046C1 (en) * 2000-06-19 2001-09-13 Ald Vacuum Techn Ag Determining cooling action of a flowing gas atmosphere on a workpiece comprises using a measuring body arranged in a fixed position outside of the workpiece and heated to a prescribed starting temperature using a heater
DE102004051546A1 (en) * 2004-10-22 2006-05-04 Ald Vacuum Technologies Ag Method for the low-distortion hardening of metallic components
FR2880898B1 (en) * 2005-01-17 2007-05-11 Const Mecaniques Sa Et GAS CUTTING CELL FOR STEEL PARTS
DE102008020470B4 (en) * 2008-04-23 2010-11-25 Vdeh-Betriebsforschungsinstitut Gmbh Measuring system for determining the local heat transfer coefficient in an oven
DE102009053066B4 (en) * 2009-11-13 2019-07-11 Air Liquide Deutschland Gmbh Method and apparatus for cooling heat treated elements
US11306371B1 (en) * 2017-10-16 2022-04-19 DANTE Solutions, Inc. Gas quenching system and method for minimizing distortion of heat treated parts
DE102019006201A1 (en) * 2019-05-09 2020-11-12 Aerospace Transmission Technologies GmbH Method and fixture hardening device for fixture hardening of components
CN120940645B (en) * 2025-10-15 2026-01-27 山西金山磁材有限公司 Sintering furnace temperature gradient control method and system for sintering neodymium iron boron

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3322386A1 (en) * 1983-06-22 1985-01-10 Schmetz Industrieofenbau und Vakuum-Hartlöttechnik KG, 5750 Menden METHOD FOR COOLING A BATCH AFTER A HEAT TREATMENT, AND OVEN SYSTEM FOR CARRYING OUT THE METHOD
DE3623105C1 (en) * 1986-07-09 1987-12-03 Degussa Process for the heat treatment of steel parts
DE4004295A1 (en) * 1990-02-13 1991-08-14 Karl Heess Gmbh & Co METHOD AND DEVICE FOR HARDENING WORKPIECES BY MEANS OF PRESSING TOOLS

Also Published As

Publication number Publication date
EP0538575A1 (en) 1993-04-28
EP0538575B1 (en) 1995-11-02
ES2081532T3 (en) 1996-03-16
DE4135313A1 (en) 1993-04-29
DE4135313C2 (en) 1993-09-23
DE59204192D1 (en) 1995-12-07

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Legal Events

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