DE59408983D1 - Process for treating parts - Google Patents

Process for treating parts

Info

Publication number
DE59408983D1
DE59408983D1 DE59408983T DE59408983T DE59408983D1 DE 59408983 D1 DE59408983 D1 DE 59408983D1 DE 59408983 T DE59408983 T DE 59408983T DE 59408983 T DE59408983 T DE 59408983T DE 59408983 D1 DE59408983 D1 DE 59408983D1
Authority
DE
Germany
Prior art keywords
parts
reaction gas
hardening
treating parts
treating
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
DE59408983T
Other languages
German (de)
Inventor
Hans-Peter Schmidt
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.)
Air Liquide Deutschland GmbH
Original Assignee
Messer Griesheim 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 Messer Griesheim GmbH filed Critical Messer Griesheim GmbH
Application granted granted Critical
Publication of DE59408983D1 publication Critical patent/DE59408983D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C23C8/10—Oxidising
    • C23C8/16—Oxidising using oxygen-containing compounds, e.g. water, carbon dioxide
    • C23C8/18—Oxidising of ferrous surfaces
    • 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
    • C21D1/76—Adjusting the composition of the atmosphere

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Heat Treatment Of Articles (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

In a process for treating parts, esp. steel and/or cast iron parts, the parts are subjected to combined oxidn. (blueing) and hardening by introduction or injection of a reducing and oxidising reaction gas at the hardening temp. into the treatment furnace. Pref. the reaction gas is produced using a methanol-water mixt.
DE59408983T 1993-10-06 1994-09-16 Process for treating parts Expired - Lifetime DE59408983D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4333940A DE4333940C1 (en) 1993-10-06 1993-10-06 Process for treating parts

Publications (1)

Publication Number Publication Date
DE59408983D1 true DE59408983D1 (en) 2000-01-13

Family

ID=6499463

Family Applications (2)

Application Number Title Priority Date Filing Date
DE4333940A Expired - Fee Related DE4333940C1 (en) 1993-10-06 1993-10-06 Process for treating parts
DE59408983T Expired - Lifetime DE59408983D1 (en) 1993-10-06 1994-09-16 Process for treating parts

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE4333940A Expired - Fee Related DE4333940C1 (en) 1993-10-06 1993-10-06 Process for treating parts

Country Status (3)

Country Link
EP (1) EP0647726B1 (en)
AT (1) ATE187504T1 (en)
DE (2) DE4333940C1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19736514C5 (en) * 1997-08-22 2004-11-25 Messer Griesheim Gmbh Process for jointly oxidizing and heat treating parts
DE19937186C1 (en) * 1999-08-06 2000-09-07 Mannesmann Sachs Ag Ferrous metal part is surface oxidized, e.g. for corrosion protection of steel clutch, torsion vibration damper and/or flywheel components, by exposing the heated part to an oxygen-rich atmosphere and gas cooling
DE10156326B4 (en) * 2001-11-19 2004-02-12 Schilling, Jörg, Dipl.-Ing. Process for surface decoration and surface hardening of ferrometallic parts
DE10235131A1 (en) 2002-08-01 2004-02-19 Ipsen International Gmbh Method and device for blackening components
DE102010032919B4 (en) * 2010-07-30 2023-10-05 Air Liquide Deutschland Gmbh Method and device for humidifying a combustible gas
ITMI20110366A1 (en) 2011-03-10 2012-09-11 Sol Spa PROCEDURE FOR STEEL TREATMENT.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE918933C (en) * 1950-07-27 1954-10-07 Robert Von Linde Dipl Ing Process for the production of a flammable bright glow gas
US2673821A (en) * 1950-11-18 1954-03-30 Midwest Research Inst Heat treatment of steel in a protective atmosphere
JP2590182B2 (en) * 1987-03-07 1997-03-12 株式会社東芝 Blackening furnace and method of manufacturing shadow mask using this blackening furnace
GB2234530A (en) * 1989-06-30 1991-02-06 Shell Int Research Heat treatment of high temperature steels
GB2233672A (en) * 1989-06-30 1991-01-16 Shell Int Research High temperature treatment of stainless steals used in high temperature reactors

Also Published As

Publication number Publication date
EP0647726A1 (en) 1995-04-12
DE4333940C1 (en) 1994-12-08
ATE187504T1 (en) 1999-12-15
EP0647726B1 (en) 1999-12-08

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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: AIR LIQUIDE DEUTSCHLAND GMBH, 47805 KREFELD, DE