EP0163906A3 - Method and vacuum furnace for heat treatment a charge - Google Patents

Method and vacuum furnace for heat treatment a charge Download PDF

Info

Publication number
EP0163906A3
EP0163906A3 EP85104965A EP85104965A EP0163906A3 EP 0163906 A3 EP0163906 A3 EP 0163906A3 EP 85104965 A EP85104965 A EP 85104965A EP 85104965 A EP85104965 A EP 85104965A EP 0163906 A3 EP0163906 A3 EP 0163906A3
Authority
EP
European Patent Office
Prior art keywords
charge
heating chamber
heating
vacuum furnace
closed
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
EP85104965A
Other languages
German (de)
Other versions
EP0163906A2 (en
EP0163906B1 (en
Inventor
Peter Schmetz
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.)
Schmetz GmbH and Co KG
Original Assignee
SCHMETZ INDUSTRIEOFENBAU und VAKUUM-HARTLOTTECHNIK KG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6235193&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0163906(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by SCHMETZ INDUSTRIEOFENBAU und VAKUUM-HARTLOTTECHNIK KG filed Critical SCHMETZ INDUSTRIEOFENBAU und VAKUUM-HARTLOTTECHNIK KG
Priority to AT85104965T priority Critical patent/ATE37201T1/en
Publication of EP0163906A2 publication Critical patent/EP0163906A2/en
Publication of EP0163906A3 publication Critical patent/EP0163906A3/en
Application granted granted Critical
Publication of EP0163906B1 publication Critical patent/EP0163906B1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B5/16—Arrangements of air or gas supply devices
    • 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
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/773—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material under reduced pressure or vacuum
    • 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
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B2005/062—Cooling elements
    • F27B2005/064—Cooling elements disposed in the furnace, around the chamber, e.g. coils
    • 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
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B5/14—Arrangements of heating devices
    • F27B2005/143—Heating rods disposed in the chamber
    • 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
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B5/16—Arrangements of air or gas supply devices
    • F27B2005/161—Gas inflow or outflow
    • F27B2005/162—Gas inflow or outflow through closable or non-closable openings of the chamber walls
    • 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
    • F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
    • F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B5/16—Arrangements of air or gas supply devices
    • F27B2005/166—Means to circulate the atmosphere
    • F27B2005/167—Means to circulate the atmosphere the atmosphere being recirculated through the treatment chamber by a turbine

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)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Drying Of Solid Materials (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A method and vacuum furnace for heat-treating a charge. Pursuant to the method, after the charge is placed in the receiving vessel, the latter is evacuated and flooded with inert gas. Subsequently, the charge is heated to the maximum permissible operating temperature of the circulation device by heating and gas circulation. Thereafter, the charge is heated to the desired end temperature by static inert gas or under vacuum, and essentially by radiation heat. The vacuum furnace may include a steel vessel which can be closed off, and which contains an inner heating chamber for receiving the charge. A heating device is provided within the heating chamber, and a fan and a gas guiding arrangement are provided for producing a gas circulation through the heating chamber. In the second phase, in which the heating is effected by radiant heat, the heating chamber can be closed off, accompanied by disconnection of the fan. For this purpose, an opening is provided in the wall of the heating chamber. This opening can be closed off by a sliding plug.
EP85104965A 1984-05-08 1985-04-24 Method and vacuum furnace for heat treatment a charge Expired EP0163906B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85104965T ATE37201T1 (en) 1984-05-08 1985-04-24 PROCESS AND VACUUM FURNACE FOR THE HEAT TREATMENT OF A BATCH.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3416902 1984-05-08
DE19843416902 DE3416902A1 (en) 1984-05-08 1984-05-08 METHOD AND VACUUM OVEN FOR HEAT TREATING A BATCH

Publications (3)

Publication Number Publication Date
EP0163906A2 EP0163906A2 (en) 1985-12-11
EP0163906A3 true EP0163906A3 (en) 1986-08-20
EP0163906B1 EP0163906B1 (en) 1988-09-14

Family

ID=6235193

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85104965A Expired EP0163906B1 (en) 1984-05-08 1985-04-24 Method and vacuum furnace for heat treatment a charge

Country Status (4)

Country Link
US (2) US4612064A (en)
EP (1) EP0163906B1 (en)
AT (1) ATE37201T1 (en)
DE (2) DE3416902A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3736501C1 (en) * 1987-10-28 1988-06-09 Degussa Process for the heat treatment of metallic workpieces
DE3736502C1 (en) * 1987-10-28 1988-06-09 Degussa Vacuum furnace for the heat treatment of metallic workpieces
US5121903A (en) * 1991-03-11 1992-06-16 Vacuum Furnace Systems Corporation Quenching arrangement for a furnace
DE4400326C2 (en) * 1994-01-07 2002-10-31 Ald Vacuum Techn Ag Device for hardening metallic workpieces
DE19615609C2 (en) * 1996-04-19 1998-03-19 Hoffmann Foerdertechnik Gmbh W Hook tackle
US5783001A (en) * 1996-11-14 1998-07-21 Ethicon, Inc. Process for the heat treatment of surgical needles by aging
DE19741837B4 (en) * 1997-09-23 2006-04-27 Robert Bosch Gmbh High temperature furnace and process for heat treatment of materials
US7598477B2 (en) * 2005-02-07 2009-10-06 Guy Smith Vacuum muffle quench furnace
DE102005045783A1 (en) * 2005-09-23 2007-03-29 Sistem Teknik Endustriyel Elektronik Sistemler Sanayi Ve Ticaret Ltd. Sirketi Single-chamber vacuum furnace with hydrogen quenching
DE102005051420A1 (en) * 2005-10-27 2007-05-03 Robert Bosch Gmbh Method and plant for dry conversion of a material structure of semi-finished products
US7531769B2 (en) * 2006-06-13 2009-05-12 Guy Smith Carbon fiber composite muffle
DE202008009980U1 (en) * 2008-07-24 2008-10-16 Ipsen International Gmbh Retort oven for the heat treatment of metallic workpieces
US10436512B1 (en) * 2016-07-28 2019-10-08 Thomas Wingens Base component for a thermoprocessing system, a thermoprocessing system, and a thermoprocessing method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR915158A (en) * 1938-11-15 1946-10-29 Wild Barfield Electr Furnaces Further training in equipment for the thermal treatment of materials
DE877153C (en) * 1951-01-28 1953-05-21 Pilling & Co W Procedure for operating Gluehoefen
DE1259919B (en) * 1964-06-12 1968-02-01 Harold Norregard Ipsen Furnace for the heat treatment of metal workpieces
GB1161603A (en) * 1965-12-30 1969-08-13 Nemo Heat Treat S Ltd Improvements relating to Heat Treatment Furnaces
FR2153560A5 (en) * 1971-09-15 1973-05-04 Ropion Robert Vacuum furnace - in which the charge is cooled by a turbine which is not damaged by high temps
DE2308525A1 (en) * 1972-02-23 1973-08-30 Ugine Infra HEAT TREATMENT OVEN
DE1919493B2 (en) * 1969-04-17 1977-06-16 ATMOSPHERIC VACUUM FURNACE

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3301541A (en) * 1964-06-12 1967-01-31 The Illinois National Bank Co Heat treating furnace with circulated gas quench
US3565410A (en) * 1968-09-06 1971-02-23 Midland Ross Corp Vacuum furnace
DE2501360B2 (en) * 1975-01-15 1978-12-07 Ipsen Industries International Gmbh, 4190 Kleve Vacuum atmosphere furnace for the heat treatment of workpieces
US4030712A (en) * 1975-02-05 1977-06-21 Alco Standard Corporation Method and apparatus for circulating a heat treating gas
US4009872A (en) * 1976-06-25 1977-03-01 Alco Standard Corporation Energy-conserving, fast-cooling heat treating furnace
JPS5354136A (en) * 1976-10-28 1978-05-17 Ishikawajima Harima Heavy Ind Vacuum carburizing furnace
JPS57188613A (en) * 1981-05-18 1982-11-19 Yokohama Rubber Co Ltd:The Air flow type electric furnace
DE3208574A1 (en) * 1982-03-10 1983-09-22 Schmetz Industrieofenbau und Vakuum-Hartlöttechnik KG, 5750 Menden Vacuum shaft furnace

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR915158A (en) * 1938-11-15 1946-10-29 Wild Barfield Electr Furnaces Further training in equipment for the thermal treatment of materials
DE877153C (en) * 1951-01-28 1953-05-21 Pilling & Co W Procedure for operating Gluehoefen
DE1259919B (en) * 1964-06-12 1968-02-01 Harold Norregard Ipsen Furnace for the heat treatment of metal workpieces
GB1161603A (en) * 1965-12-30 1969-08-13 Nemo Heat Treat S Ltd Improvements relating to Heat Treatment Furnaces
DE1919493B2 (en) * 1969-04-17 1977-06-16 ATMOSPHERIC VACUUM FURNACE
FR2153560A5 (en) * 1971-09-15 1973-05-04 Ropion Robert Vacuum furnace - in which the charge is cooled by a turbine which is not damaged by high temps
DE2308525A1 (en) * 1972-02-23 1973-08-30 Ugine Infra HEAT TREATMENT OVEN

Also Published As

Publication number Publication date
EP0163906A2 (en) 1985-12-11
US4612064A (en) 1986-09-16
US4709904A (en) 1987-12-01
DE3416902A1 (en) 1985-11-14
ATE37201T1 (en) 1988-09-15
DE3564965D1 (en) 1988-10-20
EP0163906B1 (en) 1988-09-14

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