EP0947600A3 - Verfahren zur Vakuumaufkohlung unter Behandlungsgas - Google Patents

Verfahren zur Vakuumaufkohlung unter Behandlungsgas Download PDF

Info

Publication number
EP0947600A3
EP0947600A3 EP99100982A EP99100982A EP0947600A3 EP 0947600 A3 EP0947600 A3 EP 0947600A3 EP 99100982 A EP99100982 A EP 99100982A EP 99100982 A EP99100982 A EP 99100982A EP 0947600 A3 EP0947600 A3 EP 0947600A3
Authority
EP
European Patent Office
Prior art keywords
propane
vacuum carburizing
treatment furnace
gas
vacuum
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.)
Withdrawn
Application number
EP99100982A
Other languages
English (en)
French (fr)
Other versions
EP0947600A2 (de
Inventor
Günther Schmitt
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
ALD Vacuum Technologies 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 ALD Vacuum Technologies GmbH filed Critical ALD Vacuum Technologies GmbH
Publication of EP0947600A2 publication Critical patent/EP0947600A2/de
Publication of EP0947600A3 publication Critical patent/EP0947600A3/de
Withdrawn legal-status Critical Current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
    • C23C8/08—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 only one element being applied
    • C23C8/20—Carburising
    • C23C8/22—Carburising of ferrous surfaces

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

Bei einem Verfahren zur Vakuumaufkohlung unter Behandlungsgas, bei der Stahl im Grobvakuum bei Gasdrücken bis zu etwa 20 mbar unter Verwendung von Propan (C3H8) als Kohlenstoffspender bei einer Temperatur von etwa 250 °C aufgekohlt wird, wird dem Propan Wasserstoffgas (H2) in einem Verhältnis von etwa 1 : 1 bis etwa 1 : 2 (Wasserstoffüberschuß) zugemischt, wobei das Absaugen der Zersetzungsprodukte des Propans über einen mit der Behandlungskammer verbundenen Pumpstand erfolgt.
EP99100982A 1998-04-04 1999-01-21 Verfahren zur Vakuumaufkohlung unter Behandlungsgas Withdrawn EP0947600A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19815233 1998-04-04
DE1998115233 DE19815233A1 (de) 1998-04-04 1998-04-04 Verfahren zur Vakuumaufkohlung unter Behandlungsgas

Publications (2)

Publication Number Publication Date
EP0947600A2 EP0947600A2 (de) 1999-10-06
EP0947600A3 true EP0947600A3 (de) 2003-03-12

Family

ID=7863663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99100982A Withdrawn EP0947600A3 (de) 1998-04-04 1999-01-21 Verfahren zur Vakuumaufkohlung unter Behandlungsgas

Country Status (3)

Country Link
EP (1) EP0947600A3 (de)
JP (1) JPH11315362A (de)
DE (1) DE19815233A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9212416B2 (en) 2009-08-07 2015-12-15 Swagelok Company Low temperature carburization under soft vacuum

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3531736B2 (ja) 2001-01-19 2004-05-31 オリエンタルエンヂニアリング株式会社 浸炭方法及び浸炭装置
DE10209382B4 (de) * 2002-03-02 2011-04-07 Robert Bosch Gmbh Verfahren zur Aufkohlung von Bauteilen
DE102004009288B4 (de) * 2004-02-26 2005-12-15 Universität Karlsruhe Abgasnachbehandlung bei der Vakuumaufkohlung von Stahl
DE102005061946B4 (de) * 2004-12-27 2013-03-21 Nippon Steel Corp. Einsatzgehärteter Stahl mit hervorragender Zahnoberflächendauerfestigkeit, diesen verwendendes Zahnrad, und Verfahren zur Herstellung desselben
US8123872B2 (en) * 2006-02-22 2012-02-28 General Electric Company Carburization process for stabilizing nickel-based superalloys
JP4551428B2 (ja) * 2007-07-30 2010-09-29 正賢 劉 マルテンサイト系ステンレス鋼の表面硬度を向上する方法
KR100901572B1 (ko) 2007-08-20 2009-06-08 현대자동차주식회사 자동변속기용 애뉼러스 기어의 열처리 방법
DK2804965T3 (da) 2012-01-20 2020-12-14 Swagelok Co Samtidigt flow af aktiveringsgas ved lavtemperatur-karburering

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1510481A (en) * 1976-04-02 1978-05-10 British Steel Corp Carburising coiled strip
US4386973A (en) * 1981-05-08 1983-06-07 General Signal Corporation Vacuum carburizing steel
US4807853A (en) * 1983-12-27 1989-02-28 Chugai Ro Co., Ltd. Continuous furnace for gas carburizing and hardening
DE4110361A1 (de) * 1991-03-28 1992-10-01 Linde Ag Verfahren zum aufkohlen von eisenwerkstuecken
DE4343927C1 (de) * 1993-12-22 1995-01-05 Linde Ag Verfahren zur Wärmebehandlung von Werkstücken unter Behandlungsgas
EP0818555A1 (de) * 1995-03-29 1998-01-14 JH Corporation Verfahren und vorrichtung zur vakuumzementierung und so hergestellte produkte

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991002695A1 (en) * 1989-08-18 1991-03-07 Vsesojuzny Nauchno-Issledovatelsky, Proektno-Konstruktorsky I Tekhnologichesky Institut Elektrotermicheskogo Oborudovania Vniieto Gas mixture for thermo-chemical treatment of metals and alloys and method of obtaining it
DE4236801A1 (de) * 1992-10-30 1994-05-05 Iva Industrieoefen Verfahren A Gasaufkohlungsverfahren im Vakuumofen
DE19547131A1 (de) * 1995-12-16 1997-06-19 Ipsen Ind Int Gmbh Verfahren zur Plasmaaufkohlung metallischer Werkstücke

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1510481A (en) * 1976-04-02 1978-05-10 British Steel Corp Carburising coiled strip
US4386973A (en) * 1981-05-08 1983-06-07 General Signal Corporation Vacuum carburizing steel
US4807853A (en) * 1983-12-27 1989-02-28 Chugai Ro Co., Ltd. Continuous furnace for gas carburizing and hardening
DE4110361A1 (de) * 1991-03-28 1992-10-01 Linde Ag Verfahren zum aufkohlen von eisenwerkstuecken
DE4343927C1 (de) * 1993-12-22 1995-01-05 Linde Ag Verfahren zur Wärmebehandlung von Werkstücken unter Behandlungsgas
EP0818555A1 (de) * 1995-03-29 1998-01-14 JH Corporation Verfahren und vorrichtung zur vakuumzementierung und so hergestellte produkte

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9212416B2 (en) 2009-08-07 2015-12-15 Swagelok Company Low temperature carburization under soft vacuum

Also Published As

Publication number Publication date
JPH11315362A (ja) 1999-11-16
EP0947600A2 (de) 1999-10-06
DE19815233A1 (de) 1999-10-07

Similar Documents

Publication Publication Date Title
EP0947600A3 (de) Verfahren zur Vakuumaufkohlung unter Behandlungsgas
KR20080005281A (ko) 저압 침탄질화법 및 장치
DE3765448D1 (de) Verfahren zum erhoehen des verschweisswiderstands einer oberflaeche von einer metallischen komponente.
NO924431L (no) Fremgangsmaate for fremstilling av metallkarbider med stort spesifikt overflateareal under inertgasspyling ved atmosfaerisk trykk
ES469448A1 (es) Ÿprocedimiento de doble reciclo isobarico perfeccionado, consu dispositivo de realizacion, para la sintesis de ureaŸ
ATE136946T1 (de) Verfahren und vorrichtung zum aufkohlen von stahl in einer atmosphere von niedrigem druck
ES8105036A2 (es) Procedimiento de tratamiento termico del acero y de control de dicho tratamiento
NO994774L (no) Xerogeler basert på polyisocyanat
NO161848C (no) Fremgangsmaate til fremstilling av hydrogenperoksyd.
KR870011472A (ko) 촉매의 제조방법
ATE40573T1 (de) Verfahren zur herstellung von feinverteiltem, hochreaktivem magnesium und dessen verwendung.
NO20003079L (no) Polymerisasjon-oppstartningsprosess
DE69113789T2 (de) Verfahren der Nitrierung von Stahl.
ATE34370T1 (de) Verfahren zur herstellung von siliziumnitrid.
CA2326239A1 (fr) Procede de carbonitruration a basse pression de pieces en alliage metallique
EP0316810A3 (de) Verfahren zur Herstellung linearer Polyphosphazene
DE60320137D1 (de) Verfahren zur herstellung von 4-aminodiphenylamin-zwischenprodukten
DE59102789D1 (de) Verfahren zur Herstellung von Alkyltetrahydroanthrahydrochinonlösungen und ihre Verwendung als Arbeitslösung bei der Wasserstoffperoxid-Herstellung nach dem Anthrachinonverfahren.
KR102560920B1 (ko) 철 합금 및 다른 금속으로 제조된 가공물의 저압 침탄(lpc) 방법
DE3874944D1 (de) Verfahren zur gasaufkohlung von stahl.
TR200001849T2 (tr) Polimerizasyon başlatma işlemi.
KR880011180A (ko) 디알킬 비닐포스포네이트의 제조방법
ATE131216T1 (de) Verfahren zur behandlung von stählen und refraktärmetallen.
RO85094B (ro) Procedeu pentru obtinerea de poliamide filabile
ATE541941T1 (de) Mikrobielle herstellung von levodione

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ALD VACUUM TECHNOLOGIES AG

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20030324

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

AKX Designation fees paid

Designated state(s): DE DK ES FR GB IT SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20031121