WO2004031432A3 - Method and device for low-pressure carburising - Google Patents

Method and device for low-pressure carburising Download PDF

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Publication number
WO2004031432A3
WO2004031432A3 PCT/EP2003/010014 EP0310014W WO2004031432A3 WO 2004031432 A3 WO2004031432 A3 WO 2004031432A3 EP 0310014 W EP0310014 W EP 0310014W WO 2004031432 A3 WO2004031432 A3 WO 2004031432A3
Authority
WO
WIPO (PCT)
Prior art keywords
hydrocarbon
processing chamber
process gas
low
mass flow
Prior art date
Application number
PCT/EP2003/010014
Other languages
German (de)
French (fr)
Other versions
WO2004031432A2 (en
Inventor
Alexander Di Jurmann
Original Assignee
Linde Ag
Jurmann Susanne Hf
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 Linde Ag, Jurmann Susanne Hf filed Critical Linde Ag
Priority to DE50302246T priority Critical patent/DE50302246D1/en
Priority to EP03747994A priority patent/EP1537252B1/en
Priority to AU2003267331A priority patent/AU2003267331A1/en
Publication of WO2004031432A2 publication Critical patent/WO2004031432A2/en
Publication of WO2004031432A3 publication Critical patent/WO2004031432A3/en

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

Abstract

A method and a device for sub-atmospheric pressure carburising are disclosed, whereby a hydrocarbon-containing process gas is at least temporarily introduced into a processing chamber and an exhaust stream is drawn off the processing chamber by means of at least one vacuum pump. According to the invention, a reference sample (6), with a defined carburisation surface, is introduced into the processing chamber (3), the mass flow of the hydrocarbon-containing process gas (1) is determined by means of a weighing process carried out on the reference sample (6) and the introduction of the hydrocarbon-containing process gas (1) into the process chamber (3) regulated, depending on the determined mass flow.
PCT/EP2003/010014 2002-09-13 2003-09-09 Method and device for low-pressure carburising WO2004031432A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE50302246T DE50302246D1 (en) 2002-09-13 2003-09-09 METHOD AND DEVICE FOR UNDERPRESSURE COOLING
EP03747994A EP1537252B1 (en) 2002-09-13 2003-09-09 Method and device for low-pressure carburising
AU2003267331A AU2003267331A1 (en) 2002-09-13 2003-09-09 Method and device for low-pressure carburising

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10242616A DE10242616A1 (en) 2002-09-13 2002-09-13 Carburizing process comprises feeding a hydrocarbon-containing treatment gas into a treatment chamber containing a reference sample having a defined carburizing surface and removing a waste gas stream from the chamber using a vacuum pump
DE10242616.3 2002-09-13

Publications (2)

Publication Number Publication Date
WO2004031432A2 WO2004031432A2 (en) 2004-04-15
WO2004031432A3 true WO2004031432A3 (en) 2004-12-29

Family

ID=31895964

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2003/010014 WO2004031432A2 (en) 2002-09-13 2003-09-09 Method and device for low-pressure carburising

Country Status (5)

Country Link
EP (1) EP1537252B1 (en)
AT (1) ATE316161T1 (en)
AU (1) AU2003267331A1 (en)
DE (2) DE10242616A1 (en)
WO (1) WO2004031432A2 (en)

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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL210958B1 (en) * 2007-04-02 2012-03-30 Seco Warwick Społka Akcyjna The manner and control-metering system for active control of the surface of charge in the process of carbonizing under negative pressure
WO2013109415A1 (en) 2012-01-20 2013-07-25 Swagelok Company Concurrent flow of activating gas in low temperature carburization

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5064620A (en) * 1989-06-01 1991-11-12 Pierre Beuret Probe for measuring carbon flux

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5064620A (en) * 1989-06-01 1991-11-12 Pierre Beuret Probe for measuring carbon flux

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
BAMMIDIPATI SREEKANTH ET AL: "Chemical vapor deposition of carbon on graphite by methane pyrolysis", AICHE J; AICHE JOURNAL NOV 1996 AICHE, NEW YORK, NY, US, vol. 42, no. 11, November 1996 (1996-11-01), pages 3123 - 3132, XP000937830 *
HOFFMANN R ET AL: "PROBLEME DER KINETIK UND DER KEIMBILDUNG BEIM GASNITRIEREN", HÄRTEREI - TECHNISCHE MITTEILUNGEN, vol. 38, no. 3, May 1983 (1983-05-01), CARL HANSER VERLAG, MÜNCHEN, DE, pages 103 - 109, XP009037775 *
KLÜMPER-WESTKAMP H ET AL: "BESTIMMUNG DES KOHLENSTOFFGEHALTES IN AUFKOHLUNGSFOLIEN", HÄRTEREI - TECHNISCHE MITTEILUNGEN, vol. 57, no. 5, 1 September 2002 (2002-09-01), CARL HANSER VERLAG, MÜNCHEN, DE, pages 364 - 372, XP001140765, ISSN: 0341-101X *
MATAMALA G ET AL: "Carburization and decarburization kinetics of iron in CH4 - H2 mixtures between 1000 - 1100 °C", MATERIALS CHEMISTRY AND PHYSICS SWITZERLAND, vol. 12, no. 4, April 1985 (1985-04-01), pages 313 - 319, XP002299774, ISSN: 0254-0584 *
ROEMPLER D ET AL: "KOHLENSTOFF- UND HÄRTEVERLAUF IN DER EINSATZHÄRTUNGSSCHICHT - ZUSATZMODUL FÜR DIFFUSIONSRECHNER", HÄRTEREI - TECHNISCHE MITTEILUNGEN, vol. 44, no. 6, 1 November 1989 (1989-11-01), CARL HANSER VERLAG, MÜNCHEN, DE, pages 360 - 365, XP000163077, ISSN: 0341-101X *

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
AU2003267331A1 (en) 2004-04-23
WO2004031432A2 (en) 2004-04-15
DE50302246D1 (en) 2006-04-06
ATE316161T1 (en) 2006-02-15
EP1537252B1 (en) 2006-01-18
AU2003267331A8 (en) 2004-04-23
DE10242616A1 (en) 2004-03-25
EP1537252A2 (en) 2005-06-08

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