EP0089885A3 - Method of surface-hardening metallic parts - Google Patents

Method of surface-hardening metallic parts Download PDF

Info

Publication number
EP0089885A3
EP0089885A3 EP83400541A EP83400541A EP0089885A3 EP 0089885 A3 EP0089885 A3 EP 0089885A3 EP 83400541 A EP83400541 A EP 83400541A EP 83400541 A EP83400541 A EP 83400541A EP 0089885 A3 EP0089885 A3 EP 0089885A3
Authority
EP
European Patent Office
Prior art keywords
parts
furnace
metallic parts
oxidizing gas
gaseous mixture
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.)
Granted
Application number
EP83400541A
Other languages
French (fr)
Other versions
EP0089885A2 (en
EP0089885B1 (en
Inventor
Michel Madsac
Thierry Hiron
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.)
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Priority to AT83400541T priority Critical patent/ATE29154T1/en
Publication of EP0089885A2 publication Critical patent/EP0089885A2/en
Publication of EP0089885A3 publication Critical patent/EP0089885A3/en
Application granted granted Critical
Publication of EP0089885B1 publication Critical patent/EP0089885B1/en
Expired 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
    • C23C8/24—Nitriding
    • C23C8/26—Nitriding of ferrous surfaces
    • 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
    • C23C8/28—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 more than one element being applied in one step
    • C23C8/30—Carbo-nitriding
    • C23C8/32—Carbo-nitriding 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)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Heat Treatment Of Articles (AREA)
  • Forging (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Abstract

In a surface hardening process for metal parts by nitriding or carbonitriding, the parts to be treated are placed in a furnace and maintained at a temperature of between 490 DEG C. and 750 DEG C., in a nitrogen bearing atmosphere, such atmosphere formed by introducing into the furnace a gaseous mixture comprising in particular ammonia and an oxidizing gas for accelerating the catalytic dissociation of ammonia in contact with said parts. The oxidizing gas is nitrous oxide and the gaseous mixture contains about 0.1% to 10% by volume of nitrous oxide. The invention is well suited for the surface hardening of steel parts.
EP83400541A 1982-03-23 1983-03-16 Method of surface-hardening metallic parts Expired EP0089885B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83400541T ATE29154T1 (en) 1982-03-23 1983-03-16 PROCESS FOR SURFACE HARDENING OF METAL PARTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8204874A FR2524006B1 (en) 1982-03-23 1982-03-23 PROCESS FOR THE SURFACE CURING OF METAL PARTS
FR8204874 1982-03-23

Publications (3)

Publication Number Publication Date
EP0089885A2 EP0089885A2 (en) 1983-09-28
EP0089885A3 true EP0089885A3 (en) 1984-12-05
EP0089885B1 EP0089885B1 (en) 1987-08-26

Family

ID=9272268

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83400541A Expired EP0089885B1 (en) 1982-03-23 1983-03-16 Method of surface-hardening metallic parts

Country Status (10)

Country Link
US (1) US4531984A (en)
EP (1) EP0089885B1 (en)
JP (1) JPS58174573A (en)
AT (1) ATE29154T1 (en)
AU (1) AU554394B2 (en)
CA (1) CA1215901A (en)
DE (1) DE3373197D1 (en)
ES (1) ES520824A0 (en)
FR (1) FR2524006B1 (en)
ZA (1) ZA831884B (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8608717D0 (en) * 1986-04-10 1986-05-14 Lucas Ind Plc Metal components
JP2584217B2 (en) * 1986-11-18 1997-02-26 株式会社豊田中央研究所 Surface treatment method
FR2649123B1 (en) * 1989-06-30 1991-09-13 Air Liquide METHOD FOR HEAT TREATING METALS
DE4016183A1 (en) * 1990-05-19 1991-11-21 Linde Ag METHOD FOR IMPROVING THE PROVISION OF TREATMENT GAS IN HEAT TREATMENTS
US5298090A (en) * 1992-12-22 1994-03-29 Air Products And Chemicals, Inc. Atmospheres for heat treating non-ferrous metals and alloys
US5421914A (en) * 1993-10-12 1995-06-06 The University Of Chicago Surface modification of high temperature iron alloys
FR2719057B1 (en) * 1994-04-22 1996-08-23 Innovatique Sa Process for the nitriding at low pressure of a metallic part and oven for the implementation of said process.
EP0707661B1 (en) * 1994-04-22 2000-03-15 Innovatique S.A. Method of low pressure nitriding a metal workpiece and oven for carrying out said method
JP3495590B2 (en) * 1997-06-30 2004-02-09 アイシン・エィ・ダブリュ株式会社 Gears subjected to soft nitriding and method for producing the gears
DE10003526A1 (en) * 2000-01-27 2001-08-09 Messer Griesheim Gmbh Frankfur Process for the carbonitriding of high-carbon and high-alloy steels
ATE280847T1 (en) * 2000-02-04 2004-11-15 Ipsen Int Gmbh METHOD AND USE OF A DEVICE FOR NITROCARBURIZING IRON MATERIALS
DE50001540D1 (en) * 2000-02-04 2003-04-30 Ipsen Int Gmbh Process for nitriding and / or nitrocarburizing higher alloy steels
GB2383800A (en) * 2001-07-25 2003-07-09 Nsk Europ Technology Co Ltd Performance enhancement of steel auxiliary bearing components
EP1540024A1 (en) * 2002-09-16 2005-06-15 BorgWarner Inc. High temperature alloy particularly suitable for a long-life turbocharger nozzle ring
US8967003B2 (en) * 2005-12-28 2015-03-03 Mitsuba Corporation Engine starter
RU2478137C2 (en) * 2011-06-29 2013-03-27 Открытое акционерное общество "АВТОВАЗ" Method of thermochemical treatment of steel articles
KR101215380B1 (en) 2012-07-24 2012-12-26 (주) 유창스틸산업 Method of modifying the surface of steel using gaseous nitration and steel prepared by the same
CN102914151A (en) * 2012-11-20 2013-02-06 昆山市大金机械设备厂 Molten metal retainer
FR2999609B1 (en) * 2012-12-13 2014-12-19 Peugeot Citroen Automobiles Sa PROCESS FOR REINFORCING STEEL BY THERMOCHEMICAL EFFECTS AND RE-AUSTENITISATION EFFECT
DE102014004311A1 (en) * 2014-03-25 2015-10-01 Andreas Stihl Ag & Co. Kg Chain for a working tool, method for producing a bolt for a chain and method for producing a driving member for a chain
JP6357042B2 (en) * 2014-07-18 2018-07-11 株式会社日本テクノ Gas soft nitriding method and gas soft nitriding apparatus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD47847A (en) *
FR711748A (en) * 1930-02-26 1931-09-16 Electro Metallurg Co Cementation process
FR711749A (en) * 1930-02-26 1931-09-16 Electro Metallurg Co Cementation process by nitriding
CH410904A (en) * 1962-07-12 1966-04-15 Lonza Ag Process for preventing corrosion in urea synthesis
DE1521172A1 (en) * 1966-10-14 1969-07-31 Meinrad Behringer Fa Process for hardening steel by nitriding and device for carrying out this process
FR2388896A2 (en) * 1977-04-27 1978-11-24 Air Prod & Chem THERMAL TREATMENT PROCESS OF FERROUS METALS

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1793309A (en) * 1930-02-26 1931-02-17 Electro Metallurg Co Process of case hardening
FR2446322A2 (en) * 1979-01-15 1980-08-08 Air Liquide METHOD FOR HEAT TREATMENT OF STEEL AND CONTROL OF SAID TREATMENT
GB2049740A (en) * 1979-05-15 1980-12-31 Huyton Heat Treatments Ltd Improvements in or relating to case hardening

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD47847A (en) *
FR711748A (en) * 1930-02-26 1931-09-16 Electro Metallurg Co Cementation process
FR711749A (en) * 1930-02-26 1931-09-16 Electro Metallurg Co Cementation process by nitriding
CH410904A (en) * 1962-07-12 1966-04-15 Lonza Ag Process for preventing corrosion in urea synthesis
DE1521172A1 (en) * 1966-10-14 1969-07-31 Meinrad Behringer Fa Process for hardening steel by nitriding and device for carrying out this process
FR2388896A2 (en) * 1977-04-27 1978-11-24 Air Prod & Chem THERMAL TREATMENT PROCESS OF FERROUS METALS

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 39, 1945, colonne 901, résumé no. 8, Columbus, Ohio, US; & SU - A - 59 087 (A.P. SIZOV) 28-02-1941 *
HÄRTEREITECHNISCHE MITTEILUNGEN, vol. 35, no. 6, juin 1980, pages 284-288, Munich, DE; G. BOUTTIER et al.: "Schutzgasatmosphäre auf Stickstoff-Basis" *

Also Published As

Publication number Publication date
ES8402361A1 (en) 1984-01-16
JPS58174573A (en) 1983-10-13
AU554394B2 (en) 1986-08-21
DE3373197D1 (en) 1987-10-01
CA1215901A (en) 1986-12-30
ATE29154T1 (en) 1987-09-15
AU1253583A (en) 1983-09-29
EP0089885A2 (en) 1983-09-28
FR2524006B1 (en) 1985-10-11
EP0089885B1 (en) 1987-08-26
FR2524006A1 (en) 1983-09-30
US4531984A (en) 1985-07-30
ES520824A0 (en) 1984-01-16
ZA831884B (en) 1983-11-30

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