DE3267120D1 - Method of ionitriding a steel article which has been plastically deformed in advance - Google Patents

Method of ionitriding a steel article which has been plastically deformed in advance

Info

Publication number
DE3267120D1
DE3267120D1 DE8282400928T DE3267120T DE3267120D1 DE 3267120 D1 DE3267120 D1 DE 3267120D1 DE 8282400928 T DE8282400928 T DE 8282400928T DE 3267120 T DE3267120 T DE 3267120T DE 3267120 D1 DE3267120 D1 DE 3267120D1
Authority
DE
Germany
Prior art keywords
degrees
pascal
nitrogen
ionitriding
advance
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
Application number
DE8282400928T
Other languages
German (de)
Inventor
Robert Leveque
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.)
Creusot Loire SA
Original Assignee
Creusot Loire SA
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 Creusot Loire SA filed Critical Creusot Loire SA
Application granted granted Critical
Publication of DE3267120D1 publication Critical patent/DE3267120D1/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
    • C23C8/02—Pretreatment of the material to be coated
    • 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

1. A method for the ionic nitriding of pieces of steel of any type, which comprises the following four stages in succession : a) a prior cold-working operation on the piece, the final degree of cold-working of which is between 10% and 40% ; b) a first ionic nitriding sequence with a duration of between one hour and 10 hours, carried out at a temperature t1 of between 450 degrees and 520 degrees, in a gaseous mixture consisting of nitrogen and hydrogen, which is such that the nitrogen partial pressure p1 is between 10 and 35 Pascal and such that the total gas pressure is between 200 and 650 Pascal ; c) a second ionic nitriding sequence the duration of which is between 40 and 70 hours, carried out at a temperature t2 of between 500 degrees and 580 degrees C and at least 10 degrees C and at most 50 degrees C above t1 in a gaseous mixture consisting of nitrogen and hydrogen, which is such that the nitrogen partial pressure p2 is between 60 and 80 Pascal, and that the total gas pressure remains between 200 and 650 Pascal ; and d) a final cooling in vacuo.
DE8282400928T 1981-05-21 1982-05-19 Method of ionitriding a steel article which has been plastically deformed in advance Expired DE3267120D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8110129A FR2506339A1 (en) 1981-05-21 1981-05-21 METHOD FOR THE ION NITRURATION OF A PLASTICALLY PREFORMED DEFORMED STEEL PART

Publications (1)

Publication Number Publication Date
DE3267120D1 true DE3267120D1 (en) 1985-12-05

Family

ID=9258728

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8282400928T Expired DE3267120D1 (en) 1981-05-21 1982-05-19 Method of ionitriding a steel article which has been plastically deformed in advance

Country Status (9)

Country Link
EP (1) EP0067098B1 (en)
AT (1) ATE16293T1 (en)
DE (1) DE3267120D1 (en)
DK (1) DK157691C (en)
ES (1) ES8304613A1 (en)
FR (1) FR2506339A1 (en)
GR (1) GR75839B (en)
PT (1) PT74775B (en)
ZA (1) ZA823472B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8619436D0 (en) * 1986-08-08 1986-09-17 Verdict Ion Technology Ltd Tooling
DE4429943C1 (en) * 1994-08-24 1996-02-22 Dornier Gmbh Lindauer Drop wire surface hardening
DE102006025008B4 (en) * 2006-05-30 2022-09-15 Schaeffler Technologies AG & Co. KG Process for hardening running surfaces of roller bearing components
DE102008060161B4 (en) * 2008-12-02 2012-07-19 Benteler Automobiltechnik Gmbh Method for producing a suspension component with increased fatigue strength and chassis component
LU92514B1 (en) * 2014-08-08 2016-02-09 Plasma Metal S A SURFACE TREATMENT PROCESS OF A STAINLESS STEEL PART
CN105695922A (en) * 2014-11-25 2016-06-22 上海新力动力设备研究所 Surface glow ion nitriding method of 30Cr3SiNiMoVA steel

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR86012E (en) * 1963-12-11 1965-11-26 Berliet Automobiles friction elements particularly resistant to abrasion wear
JPS5458636A (en) * 1977-10-20 1979-05-11 Kawasaki Heavy Ind Ltd Ion nitriding method
JPS5458637A (en) * 1977-10-20 1979-05-11 Kawasaki Heavy Ind Ltd Ion nitriding method
JPS5514839A (en) * 1978-07-14 1980-02-01 Kawasaki Heavy Ind Ltd Treating method for ion nitriding
FR2446326A1 (en) * 1979-01-10 1980-08-08 Creusot Loire IMPROVEMENT IN ION NITRURATION OF ELONGATED HOLLOW BODIES, IN STEEL

Also Published As

Publication number Publication date
FR2506339B1 (en) 1983-12-23
GR75839B (en) 1984-08-02
DK157691C (en) 1990-07-02
ATE16293T1 (en) 1985-11-15
ZA823472B (en) 1983-03-30
PT74775B (en) 1983-11-08
ES512331A0 (en) 1983-03-01
EP0067098B1 (en) 1985-10-30
DK228982A (en) 1982-11-22
DK157691B (en) 1990-02-05
ES8304613A1 (en) 1983-03-01
PT74775A (en) 1982-05-01
EP0067098A1 (en) 1982-12-15
FR2506339A1 (en) 1982-11-26

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee