DE59102927D1 - Vacuum furnace for the heat treatment of metallic workpieces. - Google Patents

Vacuum furnace for the heat treatment of metallic workpieces.

Info

Publication number
DE59102927D1
DE59102927D1 DE59102927T DE59102927T DE59102927D1 DE 59102927 D1 DE59102927 D1 DE 59102927D1 DE 59102927 T DE59102927 T DE 59102927T DE 59102927 T DE59102927 T DE 59102927T DE 59102927 D1 DE59102927 D1 DE 59102927D1
Authority
DE
Germany
Prior art keywords
workpieces
gas
treatment chamber
useful space
supply pipes
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.)
Expired - Lifetime
Application number
DE59102927T
Other languages
German (de)
Inventor
Gerhard Welzig
Friedrich Dr Preisser
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.)
ALD Vacuum Technologies GmbH
Original Assignee
Degussa 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 Degussa GmbH filed Critical Degussa GmbH
Application granted granted Critical
Publication of DE59102927D1 publication Critical patent/DE59102927D1/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
    • 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
    • F27B5/04—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere
    • 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
    • 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
    • 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
    • F27B2005/146—Heating rods disposed in the chamber the heating rods being in the tubes which conduct the heating gases
    • 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
    • F27B2005/164—Air supply through a set of tubes with openings
    • F27B2005/165—Controlled tubes, e.g. orientable or with closable openings
    • 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)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)

Abstract

The vacuum furnace (1) contains a thermally insulated treatment chamber (5), in which the workpieces are arranged on a charge support (30) inside the useful space (27). Outside the treatment chamber, there is a blower (19) for gas circulation and a heat exchanger (26) for gas cooling. The workpieces are heated by heating pipes (31) which are arranged around the useful space inside the treatment chamber. The heating pipes serve simultaneously as gas supply pipes in the convective heating of the workpieces and the subsequent gas chilling. To this end, the gas supply pipes are provided in the region of the useful space with radial openings (32). The furnace guarantees a particularly homogeneous chilling of the workpieces in the entire useful space by an intermediate bottom (10) with a central gas passage opening (11) for optimising the flow conditions and by the possibility of blowing onto the workpieces simultaneously radially and axially, it being possible periodically to change the direction of the axial blowing. To this end, the gas supply pipes are equipped with additional gas outlet openings (34, 35) and closure elements (36, 37) and the walls of the treatment chamber are provided with closable gas outlet openings (13, 15). <IMAGE>
DE59102927T 1990-10-26 1991-10-16 Vacuum furnace for the heat treatment of metallic workpieces. Expired - Lifetime DE59102927D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4034085A DE4034085C1 (en) 1990-10-26 1990-10-26

Publications (1)

Publication Number Publication Date
DE59102927D1 true DE59102927D1 (en) 1994-10-20

Family

ID=6417107

Family Applications (2)

Application Number Title Priority Date Filing Date
DE4034085A Expired - Lifetime DE4034085C1 (en) 1990-10-26 1990-10-26
DE59102927T Expired - Lifetime DE59102927D1 (en) 1990-10-26 1991-10-16 Vacuum furnace for the heat treatment of metallic workpieces.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE4034085A Expired - Lifetime DE4034085C1 (en) 1990-10-26 1990-10-26

Country Status (5)

Country Link
EP (1) EP0483596B1 (en)
AT (1) ATE111589T1 (en)
CZ (1) CZ282179B6 (en)
DE (2) DE4034085C1 (en)
YU (1) YU169091A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4206851A1 (en) * 1992-03-05 1993-09-09 Riedhammer Gmbh Co Kg HEATING TUBE FOR AN INDUSTRIAL STOVE, INDUSTRIAL STOVE AND METHOD FOR HEATING THE STOVE
FR2689225A1 (en) * 1992-03-25 1993-10-01 Stein Heurtey Physitherm Multipurpose furnace providing heat treatment in various conditions - including vacuum or forced convection under pressure as well as in still inert gas and tempering operations
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
DE102007029038A1 (en) * 2007-06-21 2009-01-02 Eliog-Kelvitherm Industrieofenbau Gmbh Vacuum furnace for heat treatment of metallic workpieces and method for its operation
DE102018100745B3 (en) * 2018-01-15 2019-05-09 Ebner Industrieofenbau Gmbh convection oven
FR3102547B1 (en) * 2019-10-24 2022-06-17 Ecm Tech Gas quenching cell

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2839807C2 (en) * 1978-09-13 1986-04-17 Degussa Ag, 6000 Frankfurt Vacuum furnace with gas cooling device
DE3208574A1 (en) * 1982-03-10 1983-09-22 Schmetz Industrieofenbau und Vakuum-Hartlöttechnik KG, 5750 Menden Vacuum shaft furnace
DE3736502C1 (en) * 1987-10-28 1988-06-09 Degussa Vacuum furnace for the heat treatment of metallic workpieces
DE3910234C1 (en) * 1989-03-30 1990-04-12 Degussa Ag, 6000 Frankfurt, De

Also Published As

Publication number Publication date
DE4034085C1 (en) 1991-11-14
EP0483596B1 (en) 1994-09-14
EP0483596A1 (en) 1992-05-06
CS324991A3 (en) 1992-05-13
CZ282179B6 (en) 1997-05-14
ATE111589T1 (en) 1994-09-15
YU169091A (en) 1994-11-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: ALD VACUUM TECHNOLOGIES GMBH, 63526 ERLENSEE, DE

8327 Change in the person/name/address of the patent owner

Owner name: ALD VACUUM TECHNOLOGIES AG, 63450 HANAU, DE