EP0355520A3 - Method of heat treating workpieces - Google Patents

Method of heat treating workpieces Download PDF

Info

Publication number
EP0355520A3
EP0355520A3 EP89114350A EP89114350A EP0355520A3 EP 0355520 A3 EP0355520 A3 EP 0355520A3 EP 89114350 A EP89114350 A EP 89114350A EP 89114350 A EP89114350 A EP 89114350A EP 0355520 A3 EP0355520 A3 EP 0355520A3
Authority
EP
European Patent Office
Prior art keywords
furnace
treatment
heat treating
gas
treating workpieces
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
EP89114350A
Other languages
German (de)
Other versions
EP0355520B1 (en
EP0355520A2 (en
Inventor
Peter Dr. Dipl.-Ing. Vocke
Thomas Dipl.-Ing. Kamm
Andreas Dipl.-Ing. Dey
Hilmar Dipl.-Ing. Storz
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.)
Linde GmbH
Original Assignee
Linde 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 Linde GmbH filed Critical Linde GmbH
Priority to AT89114350T priority Critical patent/ATE104360T1/en
Publication of EP0355520A2 publication Critical patent/EP0355520A2/en
Publication of EP0355520A3 publication Critical patent/EP0355520A3/en
Application granted granted Critical
Publication of EP0355520B1 publication Critical patent/EP0355520B1/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
    • 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
    • C21D9/0056—Furnaces through which the charge is moved in a horizontal straight path
    • 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
    • F27D7/02—Supplying steam, vapour, gases, or liquids

Landscapes

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

Abstract

The invention relates to a method of heat treating workpieces (metal, ceramic) in a continuous furnace and, at the same time, especially to the influencing of the flow of the treatment-gas atmosphere existing in the furnace. It is possible to influence the flow of the furnace gas by blowing in a proportion of the treatment gas required for the heat treatment at a pressure lying above the normal feed pressure of the treatment gas and directed into one or more furnace zones.
EP89114350A 1988-08-18 1989-08-03 Method of heat treating workpieces Expired - Lifetime EP0355520B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89114350T ATE104360T1 (en) 1988-08-18 1989-08-03 METHODS OF HEAT TREATMENT OF WORKPIECES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3828134 1988-08-18
DE3828134A DE3828134A1 (en) 1988-08-18 1988-08-18 METHOD FOR THE HEAT TREATMENT OF WORKPIECES

Publications (3)

Publication Number Publication Date
EP0355520A2 EP0355520A2 (en) 1990-02-28
EP0355520A3 true EP0355520A3 (en) 1990-04-18
EP0355520B1 EP0355520B1 (en) 1994-04-13

Family

ID=6361156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89114350A Expired - Lifetime EP0355520B1 (en) 1988-08-18 1989-08-03 Method of heat treating workpieces

Country Status (4)

Country Link
EP (1) EP0355520B1 (en)
AT (1) ATE104360T1 (en)
DE (2) DE3828134A1 (en)
ZA (1) ZA896284B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4121277C2 (en) * 1991-06-27 2000-08-03 Ald Vacuum Techn Ag Device and method for the automatic monitoring of operational safety and for controlling the process sequence in a vacuum heat treatment furnace
ATE270714T1 (en) * 1999-08-18 2004-07-15 Patherm Sa DEVICE FOR CONTINUOUS HEAT TREATMENT OF METAL WORKPIECES, INDIVIDUALLY OR IN GROUP
DE10347312B3 (en) * 2003-10-08 2005-04-14 Air Liquide Deutschland Gmbh Process for the heat treatment of iron materials
US7955450B2 (en) 2006-04-04 2011-06-07 Linde Aktiengesellschaft Method for heat treatment
EP1842931B1 (en) * 2006-04-04 2014-02-19 Linde AG Method for heat treatment
DE102006015739A1 (en) * 2006-04-04 2007-10-11 Linde Ag Process for heat treatment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE617319C (en) * 1931-05-02 1935-08-16 Benno Schilde Maschb Akt Ges Procedure and device for bright annealing
US3415503A (en) * 1967-08-18 1968-12-10 Btu Eng Corp Conditioned atmosphere furnace muffle
DE2601658A1 (en) * 1976-01-17 1977-07-28 J F Mahler Fa Cooling channel for continuous heat treatment furnace - where cold protective gas flows through channel in adjustable directions
EP0075438B1 (en) * 1981-09-19 1987-12-16 BOC Limited Heat treatment of metals

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2844843C2 (en) * 1978-10-14 1985-09-12 Ipsen Industries International Gmbh, 4190 Kleve Industrial furnace for the heat treatment of metallic workpieces
JPS57192215A (en) * 1981-05-21 1982-11-26 Ishikawajima Harima Heavy Ind Co Ltd Metal-heating oven
DE3208574A1 (en) * 1982-03-10 1983-09-22 Schmetz Industrieofenbau und Vakuum-Hartlöttechnik KG, 5750 Menden Vacuum shaft furnace
DE3736501C1 (en) * 1987-10-28 1988-06-09 Degussa Process for the heat treatment of metallic workpieces

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE617319C (en) * 1931-05-02 1935-08-16 Benno Schilde Maschb Akt Ges Procedure and device for bright annealing
US3415503A (en) * 1967-08-18 1968-12-10 Btu Eng Corp Conditioned atmosphere furnace muffle
DE2601658A1 (en) * 1976-01-17 1977-07-28 J F Mahler Fa Cooling channel for continuous heat treatment furnace - where cold protective gas flows through channel in adjustable directions
EP0075438B1 (en) * 1981-09-19 1987-12-16 BOC Limited Heat treatment of metals

Also Published As

Publication number Publication date
DE58907441D1 (en) 1994-05-19
DE3828134A1 (en) 1990-02-22
EP0355520B1 (en) 1994-04-13
ZA896284B (en) 1990-04-25
EP0355520A2 (en) 1990-02-28
ATE104360T1 (en) 1994-04-15

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