ZA86322B - Process and equipment for the heat treatment of workpieces - Google Patents

Process and equipment for the heat treatment of workpieces

Info

Publication number
ZA86322B
ZA86322B ZA86322A ZA86322A ZA86322B ZA 86322 B ZA86322 B ZA 86322B ZA 86322 A ZA86322 A ZA 86322A ZA 86322 A ZA86322 A ZA 86322A ZA 86322 B ZA86322 B ZA 86322B
Authority
ZA
South Africa
Prior art keywords
workpieces
cooling fluid
heat exchange
zone
furnace
Prior art date
Application number
ZA86322A
Inventor
Georg Veranneman
Reinhard Strigl
Original Assignee
Linde Ag
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 Linde Ag filed Critical Linde Ag
Publication of ZA86322B publication Critical patent/ZA86322B/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
    • 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
    • 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

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)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Furnace Details (AREA)
  • Heat Treatment Of Articles (AREA)
  • Tunnel Furnaces (AREA)

Abstract

1. A process for the thermal treatment of workpieces in a furnace comprising a plurality of chambers or zones beneath which is arranged a cooling chamber or zone, wherein the thermally treated workpieces are cooled in direct heat exchange with a cooling fluid in the cooling chamber or zone to temperatures which are harmless to them, the cooling fluid itself being cooled by indirect heat exchange with a cryogenic gas in the liquid state, characterised in that the indirect heat exchange between the cooling fluid and the cryogenic medium takes place in the cooling chamber or zone itself and that the vaporised cryogenic medium is introduced into the same thermal treatment furnace or an adjacent furnace as shield gas and/or flushing gas and/or cooling fluid.
ZA86322A 1985-01-17 1986-01-16 Process and equipment for the heat treatment of workpieces ZA86322B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19853501463 DE3501463A1 (en) 1985-01-17 1985-01-17 METHOD AND DEVICE FOR HEAT TREATMENT OF WORKPIECES

Publications (1)

Publication Number Publication Date
ZA86322B true ZA86322B (en) 1986-08-27

Family

ID=6260093

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA86322A ZA86322B (en) 1985-01-17 1986-01-16 Process and equipment for the heat treatment of workpieces

Country Status (4)

Country Link
EP (1) EP0189759B1 (en)
AT (1) ATE48443T1 (en)
DE (2) DE3501463A1 (en)
ZA (1) ZA86322B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4422588C2 (en) * 1994-06-28 1999-09-23 Ald Vacuum Techn Gmbh Process for quenching workpieces with gases and heat treatment system to carry out the process
DE19820083A1 (en) * 1998-05-06 1999-11-11 Ald Vacuum Techn Gmbh Process for quenching workpieces and heat treatment system for carrying out the process
DE102007057855B3 (en) 2007-11-29 2008-10-30 Benteler Automobiltechnik Gmbh Production of moldings with structure zones of different ductility comprises heat treatment of aluminum-silicon coated high-tensile steel blank, followed by treating zones at different temperature
EP3282023A1 (en) 2016-08-11 2018-02-14 Linde Aktiengesellschaft Cooling device and method for cooling continuous elements

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1154134B (en) * 1960-08-04 1963-09-12 Iaofuia Ofenbau Union Ges Mit Device for cooling heated, in particular metallic goods within an industrial furnace
DE1227930B (en) * 1965-06-30 1966-11-03 Mannesmann Ag Resistance heated furnace for annealing metallic workpieces and process for operating the same
GB1452062A (en) * 1972-10-10 1976-10-06 Boc International Ltd Metal treatment
GB2082634B (en) * 1980-08-13 1984-04-18 Boc Ltd Heat treatment method
DE3234863C2 (en) * 1982-09-21 1986-04-10 Messer Griesheim Gmbh, 6000 Frankfurt Process and device for bright annealing of metallic workpieces with nitrogen as protective gas

Also Published As

Publication number Publication date
DE3667300D1 (en) 1990-01-11
EP0189759A1 (en) 1986-08-06
DE3501463A1 (en) 1986-07-17
ATE48443T1 (en) 1989-12-15
EP0189759B1 (en) 1989-12-06

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