DE59202520D1 - Vacuum furnace for plasma carburizing metallic workpieces. - Google Patents

Vacuum furnace for plasma carburizing metallic workpieces.

Info

Publication number
DE59202520D1
DE59202520D1 DE59202520T DE59202520T DE59202520D1 DE 59202520 D1 DE59202520 D1 DE 59202520D1 DE 59202520 T DE59202520 T DE 59202520T DE 59202520 T DE59202520 T DE 59202520T DE 59202520 D1 DE59202520 D1 DE 59202520D1
Authority
DE
Germany
Prior art keywords
vacuum
gas
charge
pressure
vacuum furnace
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.)
Revoked
Application number
DE59202520T
Other languages
German (de)
Inventor
Bernd Dr Edenhofer
Albert Fleiter
Juergen Schroeder
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.)
Ipsen International GmbH
Original Assignee
Ipsen International 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6441930&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE59202520(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ipsen International GmbH filed Critical Ipsen International GmbH
Application granted granted Critical
Publication of DE59202520D1 publication Critical patent/DE59202520D1/en
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/36—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases using ionised gases, e.g. ionitriding
    • C23C8/38—Treatment of ferrous surfaces

Abstract

A vacuum furnace for plasma carburisation of metallic workpieces in an artificially generated electric field by means of a carbon-containing gas comprises an electric heating device (11), a vacuum pump (24) for producing a vacuum in the heating chamber (6) and gas inlet orifices (9) by means of which a cooling gas delivered by a fan (22) and passed through a heat exchanger (21) is fed to the charge (7). To obtain a vacuum furnace of smaller constructional size than that of known vacuum furnaces, the furnace casing (1) in the form of a pressure vessel is designed with respect to its permissible pressure loading for a pressure of at least 10 bar, as is the drive (4) of the fan (22) with respect to the gas pressure which can be reached on cooling of the charge (7). In addition, the gas inlet orifices (9) bearing the cooling gas are located in the heating chamber (6) and point to the charge (7). <IMAGE>
DE59202520T 1991-10-01 1992-07-23 Vacuum furnace for plasma carburizing metallic workpieces. Revoked DE59202520D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4132712A DE4132712C2 (en) 1991-10-01 1991-10-01 Vacuum furnace for plasma carburizing metallic workpieces

Publications (1)

Publication Number Publication Date
DE59202520D1 true DE59202520D1 (en) 1995-07-20

Family

ID=6441930

Family Applications (2)

Application Number Title Priority Date Filing Date
DE4132712A Expired - Lifetime DE4132712C2 (en) 1991-10-01 1991-10-01 Vacuum furnace for plasma carburizing metallic workpieces
DE59202520T Revoked DE59202520D1 (en) 1991-10-01 1992-07-23 Vacuum furnace for plasma carburizing metallic workpieces.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE4132712A Expired - Lifetime DE4132712C2 (en) 1991-10-01 1991-10-01 Vacuum furnace for plasma carburizing metallic workpieces

Country Status (4)

Country Link
EP (1) EP0535319B1 (en)
AT (1) ATE123820T1 (en)
DE (2) DE4132712C2 (en)
ES (1) ES2074773T3 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5876118A (en) * 1995-12-08 1999-03-02 The Perkin-Elmer Corporation Calorimeter having rapid cooling of a heating vessel therein
DE19709957A1 (en) * 1997-03-11 1998-09-17 Linde Ag Process for gas quenching of metallic workpieces after heat treatments
DE10157840C1 (en) * 2001-11-24 2002-10-24 Ald Vacuum Techn Ag Vacuum furnace used for heat treating metallic workpieces comprises a cylindrical housing with a door on one end with a flange-like rim on the annular front side of the housing and a lid which slides on the door
EP1318696B1 (en) * 2001-11-28 2005-06-15 Ipsen International GmbH Method for electrically heating a furnace for thermal treatment of metallic workpieces
US10196730B2 (en) 2009-09-10 2019-02-05 Ald Vacuum Technologies Gmbh Method and device for hardening workpieces, and workpieces hardened according to the method
DE102009041041B4 (en) 2009-09-10 2011-07-14 ALD Vacuum Technologies GmbH, 63450 Method and apparatus for hardening workpieces, as well as work hardened workpieces
CN104296524A (en) * 2013-07-16 2015-01-21 东阳市和顺磁业有限公司 A high vacuum sintering furnace
CN103557710B (en) * 2013-10-28 2016-06-15 北京泰科诺科技有限公司 A kind of Rapid Circulation air-cooling vacuum furnace
KR101909794B1 (en) 2016-12-29 2018-10-18 정원기 Quenching apparatus
KR102078915B1 (en) 2018-03-26 2020-02-19 정원기 Quenching apparatus
CN108870983A (en) * 2018-07-11 2018-11-23 昆山金美创机械有限公司 A kind of vacuum drying oven of optional intake method
DE102020114053B4 (en) 2020-05-26 2022-07-14 Audi Aktiengesellschaft Process arrangement for the production of a hot-formed and press-hardened sheet steel component

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4124199A (en) * 1977-07-11 1978-11-07 Abar Corporation Process and apparatus for case hardening of ferrous metal work pieces
DE3736501C1 (en) * 1987-10-28 1988-06-09 Degussa Process for the heat treatment of metallic workpieces

Also Published As

Publication number Publication date
EP0535319A1 (en) 1993-04-07
ATE123820T1 (en) 1995-06-15
EP0535319B1 (en) 1995-06-14
DE4132712C2 (en) 1995-06-29
DE4132712A1 (en) 1993-04-08
ES2074773T3 (en) 1995-09-16

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8327 Change in the person/name/address of the patent owner

Owner name: IPSEN INTERNATIONAL GMBH, 47533 KLEVE, DE

8331 Complete revocation