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WO2007069270A3 - Post forging process for enhancing fatigue strength of steel components - Google Patents

Post forging process for enhancing fatigue strength of steel components Download PDF

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Publication number
WO2007069270A3
WO2007069270A3 PCT/IN2006/000425 IN2006000425W WO2007069270A3 WO 2007069270 A3 WO2007069270 A3 WO 2007069270A3 IN 2006000425 W IN2006000425 W IN 2006000425W WO 2007069270 A3 WO2007069270 A3 WO 2007069270A3
Authority
WO
WIPO (PCT)
Prior art keywords
components
subjected
steel components
fatigue strength
applications
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.)
Ceased
Application number
PCT/IN2006/000425
Other languages
French (fr)
Other versions
WO2007069270A2 (en
Inventor
B N Kalyani
B Swaminathan
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.)
TRUE HOLDINGS PVT Ltd
Original Assignee
TRUE HOLDINGS PVT Ltd
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 TRUE HOLDINGS PVT Ltd filed Critical TRUE HOLDINGS PVT Ltd
Publication of WO2007069270A2 publication Critical patent/WO2007069270A2/en
Anticipated expiration legal-status Critical
Publication of WO2007069270A3 publication Critical patent/WO2007069270A3/en
Ceased 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
    • C22C38/02—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
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel 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 Articles (AREA)
  • Heat Treatment Of Steel (AREA)
  • Forging (AREA)

Abstract

This invention relates to a judicious combination of processes such as drilling, hardening, grinding and finishing for enhancing the fatigue strength of forged steel components of given specification that are subjected to dynamic stresses in various applications. It provides a process for optimal stress machining process to significantly enhance fatigue strength of components that are subjected to dynamic stresses. It further provides an integrated post-forging process that is applicable to forging quality steel components including crank shafts with significant enhancement of torsion and bending fatigue strengths for applications in which such components are subjected to dynamic stress of forging quality steel components for applications in which such components are subjected to dynamic stress. The process sequence involves solid carbide drilling, followed by induction hardening, twin-wheel CBN grinding and superfinishing to GBQ levels.
PCT/IN2006/000425 2005-10-04 2006-10-03 Post forging process for enhancing fatigue strength of steel components Ceased WO2007069270A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN1011MU2005 2005-10-04
IN1011/MUM/2005 2005-10-04

Publications (2)

Publication Number Publication Date
WO2007069270A2 WO2007069270A2 (en) 2007-06-21
WO2007069270A3 true WO2007069270A3 (en) 2009-04-16

Family

ID=38163338

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2006/000425 Ceased WO2007069270A2 (en) 2005-10-04 2006-10-03 Post forging process for enhancing fatigue strength of steel components

Country Status (1)

Country Link
WO (1) WO2007069270A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017122500A (en) * 2016-01-08 2017-07-13 株式会社神戸製鋼所 Large-sized crank shaft
CN108982276B (en) * 2018-09-25 2020-09-22 中车青岛四方机车车辆股份有限公司 Method and device for dynamic stress testing in metal welding process
JP7462781B2 (en) * 2020-09-28 2024-04-05 日本製鉄株式会社 Crankshaft
CN115618599B (en) * 2022-10-12 2025-06-20 中车青岛四方机车车辆股份有限公司 A forging process formulation method and system for improving fatigue strength of titanium alloy

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5000760A (en) * 1988-07-22 1991-03-19 Showa Denka K.K. CBN abrasive-grains, method for producing the same, and grinding wheel
US5906691A (en) * 1996-07-02 1999-05-25 The Timken Company Induction hardened microalloy steel having enhanced fatigue strength properties

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5000760A (en) * 1988-07-22 1991-03-19 Showa Denka K.K. CBN abrasive-grains, method for producing the same, and grinding wheel
US5906691A (en) * 1996-07-02 1999-05-25 The Timken Company Induction hardened microalloy steel having enhanced fatigue strength properties

Also Published As

Publication number Publication date
WO2007069270A2 (en) 2007-06-21

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