FR3104176B1 - Nitriding hardening process - Google Patents

Nitriding hardening process Download PDF

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Publication number
FR3104176B1
FR3104176B1 FR1913896A FR1913896A FR3104176B1 FR 3104176 B1 FR3104176 B1 FR 3104176B1 FR 1913896 A FR1913896 A FR 1913896A FR 1913896 A FR1913896 A FR 1913896A FR 3104176 B1 FR3104176 B1 FR 3104176B1
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FR
France
Prior art keywords
nitriding
steel
treatment
potential
hardening process
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.)
Active
Application number
FR1913896A
Other languages
French (fr)
Other versions
FR3104176A1 (en
Inventor
Guillaume Fallot
Simon Thibault
Grégory Michel
Denis Fleche
Alexandre Bonin
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.)
Institut de Recherche Technologique Materiaux Metallurgie et Procedes IRT M2P
Original Assignee
Institut de Recherche Technologique Materiaux Metallurgie et Procedes IRT M2P
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Publication date
Application filed by Institut de Recherche Technologique Materiaux Metallurgie et Procedes IRT M2P filed Critical Institut de Recherche Technologique Materiaux Metallurgie et Procedes IRT M2P
Priority to FR1913896A priority Critical patent/FR3104176B1/en
Priority to EP20816502.7A priority patent/EP4069879A1/en
Priority to PCT/EP2020/084695 priority patent/WO2021110945A1/en
Publication of FR3104176A1 publication Critical patent/FR3104176A1/en
Application granted granted Critical
Publication of FR3104176B1 publication Critical patent/FR3104176B1/en
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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
    • C23C8/08—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
    • C23C8/80—After-treatment

Abstract

L’invention concerne un procédé de durcissement de pièces en acier nitrurable, dans lequel une pièce en acier nitrurable est soumise à un durcissement initial par austénitisation et trempe, suivi d'un revenu, puis d'un traitement de nitruration en deux étapes successives. La première étape est un traitement à faible potentiel de nitruration, KN, (inférieur au potentiel de nitruration pour lequel une couche de combinaison se forme à la surface de la pièce en acier) afin de décarburer en surface la pièce en acier. La seconde étape est un traitement à fort potentiel de nitruration, supérieur ou égal au potentiel de nitruration pour lequel une couche de combinaison se forme à la surface de la pièce en acier.The invention relates to a process for hardening parts made of nitriding steel, in which a part made of nitriding steel is subjected to an initial hardening by austenitization and quenching, followed by tempering, then a nitriding treatment in two successive stages. The first step is a treatment at low nitriding potential, KN, (lower than the nitriding potential for which a combination layer forms on the surface of the steel part) in order to decarburize the surface of the steel part. The second step is a high nitriding potential treatment, greater than or equal to the nitriding potential for which a combination layer forms on the surface of the steel part.

FR1913896A 2019-12-06 2019-12-06 Nitriding hardening process Active FR3104176B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR1913896A FR3104176B1 (en) 2019-12-06 2019-12-06 Nitriding hardening process
EP20816502.7A EP4069879A1 (en) 2019-12-06 2020-12-04 Method for hardening by nitriding
PCT/EP2020/084695 WO2021110945A1 (en) 2019-12-06 2020-12-04 Method for hardening by nitriding

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1913896A FR3104176B1 (en) 2019-12-06 2019-12-06 Nitriding hardening process
FR1913896 2019-12-06

Publications (2)

Publication Number Publication Date
FR3104176A1 FR3104176A1 (en) 2021-06-11
FR3104176B1 true FR3104176B1 (en) 2022-07-01

Family

ID=69811165

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1913896A Active FR3104176B1 (en) 2019-12-06 2019-12-06 Nitriding hardening process

Country Status (3)

Country Link
EP (1) EP4069879A1 (en)
FR (1) FR3104176B1 (en)
WO (1) WO2021110945A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL2548977T3 (en) * 2010-03-17 2015-10-30 Nippon Steel & Sumitomo Metal Corp Method for producing directional electromagnetic steel sheet
KR101633255B1 (en) * 2014-12-18 2016-07-08 주식회사 포스코 Grain-orientied electrical shteel sheet and method for manufacturing the same
FR3032723B1 (en) * 2015-02-13 2021-01-29 Messier Bugatti Dowty METHOD OF MANUFACTURING A PART IN LOW NITRIDE ALLOY STEEL
CN107974543B (en) * 2017-12-12 2019-06-28 武汉钢铁有限公司 A kind of production method of thickness≤0.20mm low temperature high magnetic induction grain-oriented silicon steel
CN108893582A (en) * 2018-05-31 2018-11-27 浙江智造热成型科技有限公司 The production technology of oriented electrical steel

Also Published As

Publication number Publication date
EP4069879A1 (en) 2022-10-12
FR3104176A1 (en) 2021-06-11
WO2021110945A1 (en) 2021-06-10

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