WO2013121794A1 - Acier à nitruration modérée et matière d'acier utilisant un composant à nitruration modérée - Google Patents

Acier à nitruration modérée et matière d'acier utilisant un composant à nitruration modérée Download PDF

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Publication number
WO2013121794A1
WO2013121794A1 PCT/JP2013/000838 JP2013000838W WO2013121794A1 WO 2013121794 A1 WO2013121794 A1 WO 2013121794A1 JP 2013000838 W JP2013000838 W JP 2013000838W WO 2013121794 A1 WO2013121794 A1 WO 2013121794A1
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WO
WIPO (PCT)
Prior art keywords
steel
soft nitriding
soft
less
nitriding
Prior art date
Application number
PCT/JP2013/000838
Other languages
English (en)
Japanese (ja)
Other versions
WO2013121794A8 (fr
Inventor
岩本　隆
佳祐 安藤
冨田　邦和
大森　靖浩
清史 上井
三田尾　眞司
Original Assignee
Ｊｆｅ条鋼株式会社
Ｊｆｅスチール株式会社
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 Ｊｆｅ条鋼株式会社, Ｊｆｅスチール株式会社 filed Critical Ｊｆｅ条鋼株式会社
Priority to JP2013532781A priority Critical patent/JP5449626B1/ja
Priority to US14/378,553 priority patent/US20150020926A1/en
Priority to KR1020147024603A priority patent/KR20140129081A/ko
Priority to CN201380009412.5A priority patent/CN104114733A/zh
Priority to EP13748467.1A priority patent/EP2816128B1/fr
Publication of WO2013121794A1 publication Critical patent/WO2013121794A1/fr
Publication of WO2013121794A8 publication Critical patent/WO2013121794A8/fr

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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
    • 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
    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/001—Ferrous alloys, e.g. steel alloys containing N
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
    • 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
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/002—Bainite

Definitions

  • Machine structural parts such as automobile gears are usually required to have excellent fatigue characteristics and are subjected to surface hardening treatment.
  • Carburizing treatment, induction hardening treatment and nitriding treatment are well known as surface hardening treatments.
  • Patent Documents 1 and 2 are improved in bending fatigue strength due to precipitation hardening of Cu or the like, but it is difficult to say that the workability is sufficiently secured.
  • Steel requires a relatively large amount of Cu, Ti, V, and Nb, and has a high production cost.
  • the steel for soft nitriding described in Patent Document 4 has a problem of high production cost because it contains a relatively large amount of Ti and Mo.
  • Mo 0.005 to 0.4%
  • Mo has the effect of finely depositing V and Nb precipitates to improve the strength of the soft nitriding material, and is an important element in the present invention. Mo is also effective for generating a bainite structure. Although 0.005% or more is added for strength improvement, it is an expensive element, and if it exceeds 0.4%, the component cost increases. Therefore, the amount of Mo added is within the range of 0.005 to 0.4%. More preferably, it is 0.01 to 0.3%. More preferably, it is 0.04 to 0.2%.
  • B is dissolved in steel.
  • B in steel is consumed for formation of BN, and when B exists in steel as BN, it does not contribute to improvement of hardenability. Therefore, when solid solution N is present in the steel, it is preferable to add more B than is consumed for the formation of BN.
  • the amount of B (% B) and the amount of N (% N in the steel) are preferably added. It is preferable that the relationship represented by the following formula (1) holds.
  • S1 is a steel bar manufacturing process as a raw material
  • S2 is a conveying process
  • S3 is a product (soft-nitriding part) finishing process.
  • the heating temperature during hot forging is in the range of 950 to 1250 ° C.
  • the forging finishing temperature is 800 ° C. or higher
  • the cooling rate after forging is higher than 0.5 ° C./sec so that no product is precipitated.
  • No. No. 14 has a low Nb outside the range of the present invention, so the amount of precipitates after the soft nitriding treatment is small, so that a sufficient core hardness cannot be obtained, and the fatigue strength is lower than that of the conventional material.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Heat Treatment Of Steel (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Heat Treatment Of Articles (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

L'invention concerne un acier à nitruration modérée qui présente une composition de composants prédéfinie, et, avant la nitruration modérée, une excellente aptitude à l'usinage grâce à une structure dans laquelle le rapport de surface de bainite avant la nitruration modérée est supérieur à 50%, et, après la nitruration modérée, une résistance/dureté égale à celle d'une matière cémentée d'acier classique, par exemple l'acier SCr420, et qui confère des caractéristiques de fatigue supérieures.
PCT/JP2013/000838 2012-02-15 2013-02-15 Acier à nitruration modérée et matière d'acier utilisant un composant à nitruration modérée WO2013121794A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2013532781A JP5449626B1 (ja) 2012-02-15 2013-02-15 軟窒化用鋼およびこの鋼を素材とする軟窒化部品
US14/378,553 US20150020926A1 (en) 2012-02-15 2013-02-15 Steel for nitrocarburizing and nitrocarburized component using the steel as material
KR1020147024603A KR20140129081A (ko) 2012-02-15 2013-02-15 연질화용 강 및 이 강을 소재로 하는 연질화 부품
CN201380009412.5A CN104114733A (zh) 2012-02-15 2013-02-15 软氮化用钢以及以该钢作为原材的软氮化部件
EP13748467.1A EP2816128B1 (fr) 2012-02-15 2013-02-15 Acier à nitruration modérée et matière d'acier utilisant un composant à nitruration modérée

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2012-031031 2012-02-15
JP2012031031 2012-02-15

Publications (2)

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WO2013121794A1 true WO2013121794A1 (fr) 2013-08-22
WO2013121794A8 WO2013121794A8 (fr) 2014-07-17

Family

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Country Status (7)

Country Link
US (1) US20150020926A1 (fr)
EP (1) EP2816128B1 (fr)
JP (1) JP5449626B1 (fr)
KR (1) KR20140129081A (fr)
CN (1) CN104114733A (fr)
MY (1) MY177826A (fr)
WO (1) WO2013121794A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104975160A (zh) * 2015-06-18 2015-10-14 柳州科尔特锻造机械有限公司 一种主、从动锥齿轮热处理方法
JP2016056450A (ja) * 2014-09-05 2016-04-21 Ｊｆｅスチール株式会社 軟窒化用鋼および部品ならびにこれらの製造方法
JP2016056451A (ja) * 2014-09-05 2016-04-21 Ｊｆｅスチール株式会社 軟窒化用鋼および部品ならびにこれらの製造方法
WO2016152167A1 (fr) * 2015-03-24 2016-09-29 Ｊｆｅスチール株式会社 Acier pour nitruration douce, composants et son procédé de fabrication
US20170096719A1 (en) * 2014-03-18 2017-04-06 Innomaq 21, Sociedad Limitada Extremely high conductivity low cost steel
JP2018003076A (ja) * 2016-06-30 2018-01-11 Ｊｆｅスチール株式会社 軟窒化用鋼および部品ならびにこれらの製造方法
WO2018101451A1 (fr) * 2016-11-30 2018-06-07 Ｊｆｅスチール株式会社 Acier pour nitruration douce et composant

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5767594B2 (ja) * 2012-02-15 2015-08-19 Ｊｆｅ条鋼株式会社 窒化用鋼材およびこれを用いた窒化部材
EP2835130A1 (fr) * 2013-08-05 2015-02-11 Polichem SA Composition pour traitement anti-vieillissement de la peau
US11625844B2 (en) * 2020-05-11 2023-04-11 The Boeing Company Rapid effective case depth measurement of a metal component using physical surface conditioning
WO2024003593A1 (fr) * 2022-06-28 2024-01-04 Arcelormittal Pièce forgée en acier et son procédé de fabrication

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JPS559488A (en) 1978-07-07 1980-01-23 Matsushita Electric Ind Co Ltd Method of making semiconductor device
JPH07138701A (ja) 1993-11-15 1995-05-30 Kobe Steel Ltd 窒化用鋼
JPH08134585A (ja) * 1994-11-04 1996-05-28 Nippon Steel Corp 高温強度及び耐酸化性に優れたフェライト系耐熱鋼及びその製造方法
JP2002069572A (ja) 2000-08-29 2002-03-08 Nippon Steel Corp 曲げ疲労強度に優れた軟窒化用鋼
JP2006193827A (ja) * 2004-12-15 2006-07-27 Sumitomo Metal Ind Ltd 軟窒化用鋼及び軟窒化部品の製造方法
JP2007146232A (ja) * 2005-11-28 2007-06-14 Nippon Steel Corp 鋼製軟窒化機械部品の製造方法
JP2010163671A (ja) 2009-01-19 2010-07-29 Jfe Bars & Shapes Corp 軟窒化用鋼
JP2011231375A (ja) * 2010-04-28 2011-11-17 Sumitomo Metal Ind Ltd 肌焼用熱間加工鋼材

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JPS559488A (en) 1978-07-07 1980-01-23 Matsushita Electric Ind Co Ltd Method of making semiconductor device
JPH07138701A (ja) 1993-11-15 1995-05-30 Kobe Steel Ltd 窒化用鋼
JPH08134585A (ja) * 1994-11-04 1996-05-28 Nippon Steel Corp 高温強度及び耐酸化性に優れたフェライト系耐熱鋼及びその製造方法
JP2002069572A (ja) 2000-08-29 2002-03-08 Nippon Steel Corp 曲げ疲労強度に優れた軟窒化用鋼
JP2006193827A (ja) * 2004-12-15 2006-07-27 Sumitomo Metal Ind Ltd 軟窒化用鋼及び軟窒化部品の製造方法
JP2007146232A (ja) * 2005-11-28 2007-06-14 Nippon Steel Corp 鋼製軟窒化機械部品の製造方法
JP2010163671A (ja) 2009-01-19 2010-07-29 Jfe Bars & Shapes Corp 軟窒化用鋼
JP2011231375A (ja) * 2010-04-28 2011-11-17 Sumitomo Metal Ind Ltd 肌焼用熱間加工鋼材

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See also references of EP2816128A4

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170096719A1 (en) * 2014-03-18 2017-04-06 Innomaq 21, Sociedad Limitada Extremely high conductivity low cost steel
US11421290B2 (en) * 2014-03-18 2022-08-23 Innomaq 21, Sociedad Limitada Extremely high conductivity low cost steel
JP2016056450A (ja) * 2014-09-05 2016-04-21 Ｊｆｅスチール株式会社 軟窒化用鋼および部品ならびにこれらの製造方法
JP2016056451A (ja) * 2014-09-05 2016-04-21 Ｊｆｅスチール株式会社 軟窒化用鋼および部品ならびにこれらの製造方法
JPWO2016152167A1 (ja) * 2015-03-24 2017-04-27 Ｊｆｅスチール株式会社 軟窒化用鋼および部品並びにこれらの製造方法
JP6098769B2 (ja) * 2015-03-24 2017-03-22 Ｊｆｅスチール株式会社 軟窒化用鋼および部品並びにこれらの製造方法
WO2016152167A1 (fr) * 2015-03-24 2016-09-29 Ｊｆｅスチール株式会社 Acier pour nitruration douce, composants et son procédé de fabrication
US11959177B2 (en) 2015-03-24 2024-04-16 Jfe Steel Corporation Steel for nitrocarburizing and nitrocarburized component, and methods of producing same
CN104975160A (zh) * 2015-06-18 2015-10-14 柳州科尔特锻造机械有限公司 一种主、从动锥齿轮热处理方法
JP2018003076A (ja) * 2016-06-30 2018-01-11 Ｊｆｅスチール株式会社 軟窒化用鋼および部品ならびにこれらの製造方法
WO2018101451A1 (fr) * 2016-11-30 2018-06-07 Ｊｆｅスチール株式会社 Acier pour nitruration douce et composant
JPWO2018101451A1 (ja) * 2016-11-30 2019-02-28 Ｊｆｅスチール株式会社 軟窒化用鋼および部品
JP2019218633A (ja) * 2016-11-30 2019-12-26 Ｊｆｅスチール株式会社 軟窒化用鋼および部品
US11242593B2 (en) 2016-11-30 2022-02-08 Jfe Steel Corporation Steel for nitrocarburizing, and component

Also Published As

Publication number Publication date
JP5449626B1 (ja) 2014-03-19
JPWO2013121794A1 (ja) 2015-05-11
US20150020926A1 (en) 2015-01-22
CN104114733A (zh) 2014-10-22
KR20140129081A (ko) 2014-11-06
EP2816128A1 (fr) 2014-12-24
EP2816128A4 (fr) 2015-05-20
MY177826A (en) 2020-09-23
EP2816128B1 (fr) 2019-02-06
WO2013121794A8 (fr) 2014-07-17

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