EP2305851A4 - High-strength untempered steel for fracture splitting and steel component for fracture splitting - Google Patents

High-strength untempered steel for fracture splitting and steel component for fracture splitting

Info

Publication number
EP2305851A4
EP2305851A4 EP09803005.9A EP09803005A EP2305851A4 EP 2305851 A4 EP2305851 A4 EP 2305851A4 EP 09803005 A EP09803005 A EP 09803005A EP 2305851 A4 EP2305851 A4 EP 2305851A4
Authority
EP
European Patent Office
Prior art keywords
fracture splitting
steel
strength
untempered
fracture
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
EP09803005.9A
Other languages
German (de)
French (fr)
Other versions
EP2305851B1 (en
EP2305851A1 (en
Inventor
Hiromasa Takada
Shinya Teramoto
Shinsaku Fukuda
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.)
Isuzu Motors Ltd
Nippon Steel Corp
Original Assignee
Isuzu Motors Ltd
Nippon Steel and Sumitomo Metal 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 Isuzu Motors Ltd, Nippon Steel and Sumitomo Metal Corp filed Critical Isuzu Motors Ltd
Publication of EP2305851A1 publication Critical patent/EP2305851A1/en
Publication of EP2305851A4 publication Critical patent/EP2305851A4/en
Application granted granted Critical
Publication of EP2305851B1 publication Critical patent/EP2305851B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • C22C38/02—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
    • C22C38/001—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
    • C22C38/04—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
    • C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Forging (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

High strength fracture splitting use non-heat treated steel containing, by mass%, C: 0.23 to 0.35%, Si: 0.70 to 1.30%, Mn: 0.76 to 1.17%, P: 0.040 to 0.080%, S: 0.040 to 0.118%, Cr: 0.05 to 0.20%, Al: 0.010% or less, V: 0.27 to 0.45%, and N: 0.0050 to 0.0145%, having a balance of Fe and unavoidable impurities, having values of three formulas limiting the composition of ingredients satisfying required values, ensuring hot ductility, and, when hot forged, then cooled by air cooling or air blast cooling, forming a ferrite-pearlite structure having a ferrite fraction of 60% or more, and a fracture splitting use steel part.
EP09803005.9A 2008-07-29 2009-07-23 High-strength untempered steel for fracture splitting and steel component for fracture splitting Active EP2305851B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008195094 2008-07-29
PCT/JP2009/063535 WO2010013763A1 (en) 2008-07-29 2009-07-23 High-strength untempered steel for fracture splitting and steel component for fracture splitting

Publications (3)

Publication Number Publication Date
EP2305851A1 EP2305851A1 (en) 2011-04-06
EP2305851A4 true EP2305851A4 (en) 2014-01-29
EP2305851B1 EP2305851B1 (en) 2015-03-18

Family

ID=41610462

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09803005.9A Active EP2305851B1 (en) 2008-07-29 2009-07-23 High-strength untempered steel for fracture splitting and steel component for fracture splitting

Country Status (5)

Country Link
EP (1) EP2305851B1 (en)
JP (1) JP5340290B2 (en)
CN (1) CN101883874B (en)
TW (1) TWI396755B (en)
WO (1) WO2010013763A1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2717295T3 (en) * 2013-03-20 2019-06-20 Toyota Motor Co Ltd Forged part, method to produce the same and connecting rod
JP6414319B2 (en) * 2015-03-09 2018-10-31 新日鐵住金株式会社 Hot rolled steel and steel parts
CN104911486A (en) * 2015-06-16 2015-09-16 武汉钢铁(集团)公司 Non-quenched and tempered steel for automobile fastener screws and production method thereof
CN106480372A (en) * 2015-08-31 2017-03-08 鞍钢股份有限公司 A kind of 8.8 grades of securing members non-quenched cold heading steel wire rod and its production methods
CN106480373A (en) * 2015-08-31 2017-03-08 鞍钢股份有限公司 A kind of 9.8 grades of securing members non-quenched cold heading steel wire rod and its production methods
CN105154774A (en) * 2015-09-23 2015-12-16 宝山钢铁股份有限公司 Free-cutting medium-carbon non-quenching and tempering steel for fracture splitting connecting rod and manufacturing method thereof
JP6617852B2 (en) * 2017-02-24 2019-12-11 日本製鉄株式会社 Steel bar for hot forging
JP7010298B2 (en) * 2017-10-31 2022-02-10 日本製鉄株式会社 Hot forged steel
WO2019203348A1 (en) * 2018-04-20 2019-10-24 日本製鉄株式会社 Steel, machine component, and connecting rod
CN109252097B (en) * 2018-10-10 2020-09-29 江阴兴澄特种钢铁有限公司 Non-quenched and tempered steel of high-strength expansion-fracture connecting rod and continuous casting production process thereof
JP6717398B1 (en) * 2019-03-14 2020-07-01 愛知製鋼株式会社 Forged parts, manufacturing method thereof, and connecting rod
CN115044834A (en) * 2022-06-20 2022-09-13 西王金属科技有限公司 Low-alloy high-strength steel and preparation method thereof
CN115637380A (en) * 2022-09-28 2023-01-24 首钢集团有限公司 Hot-rolled strip steel for low-crack-sensitivity metal cold cutting saw and preparation method thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001262267A (en) * 2000-03-17 2001-09-26 Sumitomo Metal Ind Ltd Non-heat treated steel
JP2004277841A (en) * 2003-03-18 2004-10-07 Sumitomo Metal Ind Ltd Non-heat treated steel
JP2005054228A (en) * 2003-08-04 2005-03-03 Aichi Steel Works Ltd Easily rupture-separating ultrahigh-temperature hot-forged non-heat-treated component for connecting rod, and manufacturing method therefor
JP2006052432A (en) * 2004-08-10 2006-02-23 Nissan Motor Co Ltd Method for manufacturing forged product for connecting rod easily separated through rupture and having high-strength
EP1780296A1 (en) * 2005-10-26 2007-05-02 Nissan Motor Co., Ltd. Non-heat treated steel for connecting rod and connecting rod formed of same

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3235442B2 (en) 1995-12-26 2001-12-04 住友金属工業株式会社 High strength, low ductility non-heat treated steel
JP3697822B2 (en) 1997-02-04 2005-09-21 大同特殊鋼株式会社 High-strength non-tempered steel for hot forging with easy fracture separation
JP3715744B2 (en) 1997-05-26 2005-11-16 新日本製鐵株式会社 Non-tempered steel for hot forging used by fracture cutting
JP3445478B2 (en) 1997-11-18 2003-09-08 いすゞ自動車株式会社 Machine structural steel and fracture splitting machine parts using the same
JP3416869B2 (en) 1998-04-06 2003-06-16 住友金属工業株式会社 Low ductility non-heat treated steel with excellent machinability
JP3355132B2 (en) 1998-05-01 2002-12-09 新日本製鐵株式会社 Machine structural steel with excellent fracture separation and durability
JP5023410B2 (en) 2001-03-02 2012-09-12 大同特殊鋼株式会社 Non-tempered steel for hot forging with easy fracture separation
JP3893889B2 (en) 2001-03-21 2007-03-14 大同特殊鋼株式会社 Non-tempered steel for hot forging that can be easily separated by fracture
JP2003193184A (en) 2001-12-28 2003-07-09 Kobe Steel Ltd Broken-split type connecting rod and steel therefor
JP3887271B2 (en) 2002-05-29 2007-02-28 大同特殊鋼株式会社 High-strength non-tempered steel that can be separated by breakage and intermediate products
JP4314851B2 (en) 2003-03-14 2009-08-19 大同特殊鋼株式会社 High strength non-tempered steel suitable for fracture separation
JP3988662B2 (en) 2003-03-18 2007-10-10 住友金属工業株式会社 Non-tempered steel
JP2005002367A (en) 2003-06-09 2005-01-06 Sanyo Special Steel Co Ltd Non-heat-treated steel for machine structural use excellent in fracture/partition property
JP4784103B2 (en) * 2005-01-25 2011-10-05 大同特殊鋼株式会社 Non-tempered steel with high yield strength ratio
JP4268194B2 (en) * 2006-03-15 2009-05-27 株式会社神戸製鋼所 Rolled material for fracture separation type connecting rod excellent in fracture separation, hot forged parts for fracture separation type connecting rod excellent in fracture separation, and fracture separation type connecting rod
KR100949373B1 (en) * 2006-03-31 2010-03-25 신닛뽄세이테쯔 카부시키카이샤 High strength spring heat-treated steel

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001262267A (en) * 2000-03-17 2001-09-26 Sumitomo Metal Ind Ltd Non-heat treated steel
JP2004277841A (en) * 2003-03-18 2004-10-07 Sumitomo Metal Ind Ltd Non-heat treated steel
JP2005054228A (en) * 2003-08-04 2005-03-03 Aichi Steel Works Ltd Easily rupture-separating ultrahigh-temperature hot-forged non-heat-treated component for connecting rod, and manufacturing method therefor
JP2006052432A (en) * 2004-08-10 2006-02-23 Nissan Motor Co Ltd Method for manufacturing forged product for connecting rod easily separated through rupture and having high-strength
EP1780296A1 (en) * 2005-10-26 2007-05-02 Nissan Motor Co., Ltd. Non-heat treated steel for connecting rod and connecting rod formed of same

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GU Z ET AL: "Fracture splitting technology of automobile engine connecting rod", THE INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, SPRINGER, BERLIN, DE, vol. 25, no. 9-10, 1 May 2005 (2005-05-01), pages 883 - 887, XP019380231, ISSN: 1433-3015, DOI: 10.1007/S00170-003-2022-2 *
See also references of WO2010013763A1 *

Also Published As

Publication number Publication date
WO2010013763A1 (en) 2010-02-04
JPWO2010013763A1 (en) 2012-01-12
TWI396755B (en) 2013-05-21
EP2305851B1 (en) 2015-03-18
TW201012948A (en) 2010-04-01
CN101883874A (en) 2010-11-10
EP2305851A1 (en) 2011-04-06
CN101883874B (en) 2012-01-18
JP5340290B2 (en) 2013-11-13

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