ATE21967T1 - ROTARY FURNACES FOR THERMAL, THERMOCHEMICAL OR ELECTROTHERMAL TREATMENT OF METALS IN DILUTED ATMOSPHERE. - Google Patents

ROTARY FURNACES FOR THERMAL, THERMOCHEMICAL OR ELECTROTHERMAL TREATMENT OF METALS IN DILUTED ATMOSPHERE.

Info

Publication number
ATE21967T1
ATE21967T1 AT83400814T AT83400814T ATE21967T1 AT E21967 T1 ATE21967 T1 AT E21967T1 AT 83400814 T AT83400814 T AT 83400814T AT 83400814 T AT83400814 T AT 83400814T AT E21967 T1 ATE21967 T1 AT E21967T1
Authority
AT
Austria
Prior art keywords
tunnel
enclosure
parts
hardening
rotary hearth
Prior art date
Application number
AT83400814T
Other languages
German (de)
Inventor
Jean Bares
Original Assignee
Traitement Sous Vide
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 Traitement Sous Vide filed Critical Traitement Sous Vide
Application granted granted Critical
Publication of ATE21967T1 publication Critical patent/ATE21967T1/en

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
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/16—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a circular or arcuate path
    • 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
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/04—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity adapted for treating the charge in vacuum or special atmosphere
    • F27B9/042—Vacuum furnaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Details (AREA)
  • Vertical, Hearth, Or Arc Furnaces (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)

Abstract

1. A rotary hearth furnace for thermic, thermochemical or electrothermic treatment of metal parts in a diluted atmosphere characterized in that it comprises : - a sealed metal enclosure (1), which may include a double wall, with an interposed cooling layer, this enclosure (1) comprising a side wall (2) preferably having a circular horizontal section, a cover (3) and a bottom (4) - means for creating, within the enclosure, an atmosphere for treatment under reduced pressure ; - a circular rolling path provided inside the enclosure on said bottom, in a peripheral region substantially adjacent the cylindrical wall ; - an annular tunnel (12) made of a heat isolating material, situated above the rolling track, this tunnel being open on its lower surface opposite the rolling track, this tunnel including means (13) for thermic, thermochemical or electrothermic treatment ; - a rotary hearth (22) consisting of a ring made of a heat isolating material, this hearth being movable on the rolling track and arranged so as to close the aperture of the lower part of the tunnel and thus provide continuity of the thermic isolation of the tunnel (12) as far as its lower surface is concerned ; - means for rotating the rotary hearth (22) by a motor (24) preferably lodged outside the enclosure ; - elements for supporting the parts (S) evenly distributed on the rotary hearth (22) ; - a hardening cell, comprising, on the one hand, a chamber forming a lock (6), also serving for charging and discharging the parts to be treated, this chamber being mounted against the side wall (2), inside the enclosure and communicating with the inner volume of the tunnel (12) by a first door and, if need be, a movable separating wall, and with the outside by a second door so as to allow the introduction and discharge of the parts to be treated inside the tunnel, and, on the other hand, a hardening a hardening vat (9) lodged below said chamber (6), this hardening cell comprising handling means (10) for depositing the parts on or taking them away from the rotary hearth, and for plunging them, at the end of treatment, into the hardening vat (9).
AT83400814T 1982-04-27 1983-04-25 ROTARY FURNACES FOR THERMAL, THERMOCHEMICAL OR ELECTROTHERMAL TREATMENT OF METALS IN DILUTED ATMOSPHERE. ATE21967T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8207224A FR2525751A1 (en) 1982-04-27 1982-04-27 SOFT ROTATING OVEN FOR THE THERMAL, THERMO-CHEMICAL OR ELECTROTHERMIC TREATMENT OF METALS UNDER RAREFILE ATMOSPHERE
EP83400814A EP0093060B1 (en) 1982-04-27 1983-04-25 Rotary hearth furnace for thermic, thermochemical or electrothermic treatment of metals in a diluted atmosphere

Publications (1)

Publication Number Publication Date
ATE21967T1 true ATE21967T1 (en) 1986-09-15

Family

ID=9273437

Family Applications (1)

Application Number Title Priority Date Filing Date
AT83400814T ATE21967T1 (en) 1982-04-27 1983-04-25 ROTARY FURNACES FOR THERMAL, THERMOCHEMICAL OR ELECTROTHERMAL TREATMENT OF METALS IN DILUTED ATMOSPHERE.

Country Status (4)

Country Link
EP (1) EP0093060B1 (en)
AT (1) ATE21967T1 (en)
DE (1) DE3365808D1 (en)
FR (1) FR2525751A1 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4634375A (en) * 1985-03-11 1987-01-06 Hailey Robert W Heating and handling system for metal consolidation process
SE452359C (en) * 1985-04-30 1994-04-11 Kvaerner Generator Ab Device for controlling the heat transfer rate of a CFB boiler
DE102007048041A1 (en) * 2007-10-05 2009-04-09 Loi Thermprocess Gmbh Rotary hearth furnace
DE102008000056A1 (en) * 2008-01-14 2009-07-23 Loi Thermprocess Gmbh Apparatus and method for loading and unloading a heat treatment furnace
DE102008020449A1 (en) * 2008-04-01 2009-10-15 Manfred Husslein Industrial furnace and method for operating an industrial furnace
CN101644532B (en) * 2009-06-26 2011-05-04 中冶长天国际工程有限责任公司 Rotary kiln head revolving door
CN104864721B (en) * 2014-10-17 2017-05-31 安阳强基精密制造产业园股份有限公司 Industrial Stoves
CN110514017B (en) * 2019-08-28 2024-05-17 大同新成新材料股份有限公司 Anti-oxidation coating heat treatment equipment and method for carbon-carbon composite material
CN112985052A (en) * 2021-04-09 2021-06-18 江西科技学院 Tunnel type continuous sintering furnace and sintering method thereof
CN113549974B (en) * 2021-09-22 2021-12-07 南通铭朗建筑机械有限公司 Local oxidation coating treatment device for machining of building machinery parts

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1321463A (en) * 1962-02-05 1963-03-22 Heurtey Sa Furnace for reheating and heat treatment of metal products and in particular ingots
FR1483242A (en) * 1966-06-13 1967-06-02 Toyo Kogyo Company Ltd Heat treatment furnace
US3718324A (en) * 1971-11-12 1973-02-27 Hayes Inc C I Vacuum furnace and work cart for use therein
GB2026663B (en) * 1978-07-26 1982-09-02 Hayes Inc C Continuous heat treating vacuum furnace

Also Published As

Publication number Publication date
FR2525751A1 (en) 1983-10-28
FR2525751B1 (en) 1984-08-17
EP0093060A1 (en) 1983-11-02
DE3365808D1 (en) 1986-10-09
EP0093060B1 (en) 1986-09-03

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee