EP0674014A4 - Non-heat-treated hot-forging steel excellent in tensile strength, fatigue strength and machinability. - Google Patents

Non-heat-treated hot-forging steel excellent in tensile strength, fatigue strength and machinability.

Info

Publication number
EP0674014A4
EP0674014A4 EP94929026A EP94929026A EP0674014A4 EP 0674014 A4 EP0674014 A4 EP 0674014A4 EP 94929026 A EP94929026 A EP 94929026A EP 94929026 A EP94929026 A EP 94929026A EP 0674014 A4 EP0674014 A4 EP 0674014A4
Authority
EP
European Patent Office
Prior art keywords
machinability
heat
steel excellent
forging steel
tensile strength
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
EP94929026A
Other languages
German (de)
French (fr)
Other versions
EP0674014A1 (en
EP0674014B1 (en
Inventor
Toshihiko Nippon Ste Takahashi
Fusao Nippon Steel Co Ishikawa
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of EP0674014A1 publication Critical patent/EP0674014A1/en
Publication of EP0674014A4 publication Critical patent/EP0674014A4/en
Application granted granted Critical
Publication of EP0674014B1 publication Critical patent/EP0674014B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing 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
    • C22C38/001—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
    • C22C38/18—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
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
EP94929026A 1993-10-12 1994-10-11 Non-heat-treated hot-forging steel excellent in tensile strength, fatigue strength and machinability Expired - Lifetime EP0674014B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP25433593 1993-10-12
JP25433593A JP3241897B2 (en) 1993-10-12 1993-10-12 Non-heat treated steel for hot forging with excellent tensile strength, fatigue strength and machinability
JP254335/93 1993-10-12
PCT/JP1994/001693 WO1995010637A1 (en) 1993-10-12 1994-10-11 Non-heat-treated hot-forging steel excellent in tensile strength, fatigue strength and machinability

Publications (3)

Publication Number Publication Date
EP0674014A1 EP0674014A1 (en) 1995-09-27
EP0674014A4 true EP0674014A4 (en) 1996-02-07
EP0674014B1 EP0674014B1 (en) 1999-07-28

Family

ID=17263582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94929026A Expired - Lifetime EP0674014B1 (en) 1993-10-12 1994-10-11 Non-heat-treated hot-forging steel excellent in tensile strength, fatigue strength and machinability

Country Status (6)

Country Link
EP (1) EP0674014B1 (en)
JP (1) JP3241897B2 (en)
KR (1) KR0180938B1 (en)
CN (1) CN1039035C (en)
DE (1) DE69419720T2 (en)
WO (1) WO1995010637A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2774098B1 (en) * 1998-01-28 2001-08-03 Ascometal Sa STEEL AND PROCESS FOR THE MANUFACTURE OF SECABLE MECHANICAL PARTS
KR20010048426A (en) * 1999-11-26 2001-06-15 이계안 A compound of non-quenched and tempered steel of low carbon and high toughness for the front axle beam
KR100435461B1 (en) * 1999-12-20 2004-06-10 주식회사 포스코 A method for manufacturing steel material for cold forging with low property deviation
JP3888865B2 (en) * 2000-10-25 2007-03-07 株式会社ゴーシュー Forging method
KR100401571B1 (en) * 2001-02-20 2003-10-17 한국기계연구원 High strength microalloyed steel having bainite structure for hot forging and manufacturing method therefor
WO2004083475A1 (en) * 2003-03-18 2004-09-30 Sumitomo Metal Industries Ltd. Non-quenched/tempered connecting rod and method of producing the same
EP1676932B1 (en) * 2004-12-28 2015-10-21 Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) High strength thin steel sheet having high hydrogen embrittlement resisting property
CN100500918C (en) * 2007-03-29 2009-06-17 攀钢集团成都钢铁有限责任公司 Steel for large diameter non-tempering petroleum sleeve
CN102851471A (en) * 2012-09-27 2013-01-02 攀枝花学院 Heat treatment method for rapidly obtaining fine ferrite grains by low carbon alloy steel
PL3168312T3 (en) * 2015-11-16 2019-09-30 Deutsche Edelstahlwerke Specialty Steel Gmbh & Co. Kg Engineering steel with bainitic structure, forged part produced therefrom and method for making a forged part
CN105734414A (en) * 2016-02-19 2016-07-06 唐山钢铁集团有限责任公司 Medium-carbon non-quenched and tempered steel and production method thereof
WO2019088190A1 (en) * 2017-10-31 2019-05-09 日本製鉄株式会社 Hot forged steel
CN111154945B (en) * 2020-01-17 2021-05-28 中天钢铁集团有限公司 Control method for liquated nitrides in Ti and V microalloyed aluminum deoxidized sulfur-containing non-quenched and tempered steel
CN115896614A (en) * 2022-10-31 2023-04-04 中国第一汽车股份有限公司 Niobium-containing bainite non-quenched and tempered steel material, steering knuckle and preparation method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01176055A (en) * 1987-12-28 1989-07-12 Kawasaki Steel Corp Non-heat treated steel for hot forging having excellent machinability
JPH05279790A (en) * 1992-03-30 1993-10-26 Sumitomo Metal Ind Ltd High strength non-heattreated steel excellent in ductility at high temperature
JPH0673490A (en) * 1992-08-26 1994-03-15 Aichi Steel Works Ltd High toughness non-heat-treated rolled bar steel

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS589813B2 (en) * 1978-03-14 1983-02-23 住友金属工業株式会社 Manufacturing method for non-thermal forged steel products
JPS61104049A (en) * 1984-10-26 1986-05-22 Daido Steel Co Ltd Steel for machine structural use
JPS61261464A (en) * 1985-05-13 1986-11-19 Daido Steel Co Ltd Steel for machine structural use
JPS62167855A (en) * 1986-01-21 1987-07-24 Nippon Kokan Kk <Nkk> Unrefined steel for hot forging having superior fatigue resistance
JPH04210449A (en) * 1990-12-12 1992-07-31 Toa Steel Co Ltd High toughness non-heat treated steel for hot forging

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01176055A (en) * 1987-12-28 1989-07-12 Kawasaki Steel Corp Non-heat treated steel for hot forging having excellent machinability
JPH05279790A (en) * 1992-03-30 1993-10-26 Sumitomo Metal Ind Ltd High strength non-heattreated steel excellent in ductility at high temperature
JPH0673490A (en) * 1992-08-26 1994-03-15 Aichi Steel Works Ltd High toughness non-heat-treated rolled bar steel

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 13, no. 457 (C - 644) 16 October 1989 (1989-10-16) *
PATENT ABSTRACTS OF JAPAN vol. 18, no. 068 (C - 1161) 4 February 1994 (1994-02-04) *
PATENT ABSTRACTS OF JAPAN vol. 18, no. 328 (C - 1215) 22 June 1994 (1994-06-22) *
See also references of WO9510637A1 *

Also Published As

Publication number Publication date
DE69419720D1 (en) 1999-09-02
DE69419720T2 (en) 1999-12-16
WO1995010637A1 (en) 1995-04-20
KR0180938B1 (en) 1999-02-18
KR950704530A (en) 1995-11-20
EP0674014A1 (en) 1995-09-27
EP0674014B1 (en) 1999-07-28
JPH07109545A (en) 1995-04-25
CN1115582A (en) 1996-01-24
CN1039035C (en) 1998-07-08
JP3241897B2 (en) 2001-12-25

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