WO2023249954A3 - Systems and methods for improving iron-based camshaft fatigue life - Google Patents

Systems and methods for improving iron-based camshaft fatigue life Download PDF

Info

Publication number
WO2023249954A3
WO2023249954A3 PCT/US2023/025763 US2023025763W WO2023249954A3 WO 2023249954 A3 WO2023249954 A3 WO 2023249954A3 US 2023025763 W US2023025763 W US 2023025763W WO 2023249954 A3 WO2023249954 A3 WO 2023249954A3
Authority
WO
WIPO (PCT)
Prior art keywords
camshaft
systems
methods
fatigue life
improving iron
Prior art date
Application number
PCT/US2023/025763
Other languages
French (fr)
Other versions
WO2023249954A2 (en
Inventor
Ben Wang
David B. Rutledge
Chin-Pei Wang
Corey W. TROBAUGH
Yong-Ching Chen
Greg Knight
Thomas A. LAMBROSA
Lee Stark
Sophie R. GRIMES
Original Assignee
Cummins Inc.
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 Cummins Inc. filed Critical Cummins Inc.
Publication of WO2023249954A2 publication Critical patent/WO2023249954A2/en
Publication of WO2023249954A3 publication Critical patent/WO2023249954A3/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
    • B22D15/04—Machines or apparatus for chill casting
    • 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • C21D1/20—Isothermal quenching, e.g. bainitic hardening
    • 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
    • C21D11/00—Process control or regulation for heat treatments
    • C21D11/005—Process control or regulation for heat treatments for cooling
    • 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
    • C21D5/00—Heat treatments of cast-iron
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/30—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for crankshafts; for camshafts
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/04—Cast-iron alloys containing spheroidal graphite
    • 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
    • C21D2211/001—Austenite
    • 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
    • C21D2211/003—Cementite
    • 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
    • C21D2211/005—Ferrite
    • 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
    • C21D2211/006—Graphite
    • 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
    • C21D2211/007—Ledeburite
    • 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
    • C21D2211/009—Pearlite
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C37/00—Cast-iron alloys
    • C22C37/06—Cast-iron alloys containing chromium
    • C22C37/08—Cast-iron alloys containing chromium with nickel

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

A method of casting a camshaft including iron includes determining a cooling rate profile based on a chemical composition of the camshaft and a target bearing life of the camshaft. The method includes casting the camshaft including cooling the camshaft in a chiller based on the cooling rate profile. The method includes imparting the camshaft with a microstructure comprising carbide, ledeburite, pearlite, ausferrite, or combinations thereof.
PCT/US2023/025763 2022-06-20 2023-06-20 Systems and methods for improving iron-based camshaft fatigue life WO2023249954A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202263353743P 2022-06-20 2022-06-20
US63/353,743 2022-06-20

Publications (2)

Publication Number Publication Date
WO2023249954A2 WO2023249954A2 (en) 2023-12-28
WO2023249954A3 true WO2023249954A3 (en) 2024-02-08

Family

ID=89380532

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2023/025763 WO2023249954A2 (en) 2022-06-20 2023-06-20 Systems and methods for improving iron-based camshaft fatigue life

Country Status (1)

Country Link
WO (1) WO2023249954A2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384515A (en) * 1965-06-21 1968-05-21 Gen Motors Corp Process of preparing improved cast iron articles
US5028281A (en) * 1988-06-14 1991-07-02 Textron, Inc. Camshaft
US5122204A (en) * 1990-04-21 1992-06-16 Lydmet Limited Camshafts
KR20010058901A (en) * 1999-12-30 2001-07-06 이계안 Manufacturing methods for cam shaft made of spheroidal graphite cast iron based on Mo-B
US6398881B1 (en) * 1996-09-13 2002-06-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Wear-resistant camshaft and method of producing the same
US20070175028A1 (en) * 2004-03-03 2007-08-02 Kazuaki Okuno Method for producing exterior component of assembled camshaft

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3384515A (en) * 1965-06-21 1968-05-21 Gen Motors Corp Process of preparing improved cast iron articles
US5028281A (en) * 1988-06-14 1991-07-02 Textron, Inc. Camshaft
US5122204A (en) * 1990-04-21 1992-06-16 Lydmet Limited Camshafts
US6398881B1 (en) * 1996-09-13 2002-06-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Wear-resistant camshaft and method of producing the same
KR20010058901A (en) * 1999-12-30 2001-07-06 이계안 Manufacturing methods for cam shaft made of spheroidal graphite cast iron based on Mo-B
US20070175028A1 (en) * 2004-03-03 2007-08-02 Kazuaki Okuno Method for producing exterior component of assembled camshaft

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MENEGHETTI G., CAMPAGNOLO A., BERTO D., PULLIN E., MASAGGIA S.: "Fatigue strength of austempered ductile iron-to-steel dissimilar arc-welded joints", WELDING IN THE WORLD, SPRINGER, DE, vol. 65, no. 4, 1 April 2021 (2021-04-01), DE , pages 667 - 689, XP093137421, ISSN: 0043-2288, DOI: 10.1007/s40194-020-01058-z *

Also Published As

Publication number Publication date
WO2023249954A2 (en) 2023-12-28

Similar Documents

Publication Publication Date Title
AU5559999A (en) Low temperature case hardening processes
CN102676780B (en) Hardening and tempering technology of alloy-steel tube
US20080047632A1 (en) Method for Thermally Treating a Component Consisting of a Fully Hardenable, Heat-Resistant Steel and a Component Consisting of Said Steel
US20110073222A1 (en) Heat-Treatment Process for a Steel
EP1413631A3 (en) Improved spall propagation properties of case-hardened M50 and M50NIL bearings
CN108277449A (en) A kind of heat treatment method carrying out carburizing and quenching to low-carbon alloy steel workpiece
CN105039901A (en) Carbonitriding bearing component, preparing method and spherical bearing with component
CN104781427A (en) Method for heat treating a steel component and a steel component
US20050039825A1 (en) Steel parts and method for heat-treating steel parts
WO2023249954A3 (en) Systems and methods for improving iron-based camshaft fatigue life
CN104540970A (en) Method for heat treating a steel component and a steel component
MX2021006172A (en) A method of manufacturing martensitic steel and a martensitic steel thereof.
WO2006026700A3 (en) Optimization of steel metallurgy to improve broach tool life
CN103774085B (en) A kind of high-nitrogen austenitic layer in the preparation of low-carbon alloy steel surface and preparation method
UA85085C2 (en) Method to obtain anti-friction layer of slide bearing
CN105238913A (en) Pin shaft of engine timing chain and tufftriding process
WO2007001374A3 (en) Method of making high strength ferrous article, and article made thereby
US10287648B2 (en) Track bushing
JP2000310329A (en) Surface-hardened connecting rod
US20160244856A1 (en) Slide rings having a ledeburitic microstructure at the surface
Senatorski et al. Wear resistance characteristics of thermo-chemically treated structural steels
ZA202203827B (en) Track chain components with hardface overlay
EP4206355A4 (en) 980 mpa-grade ultra-low-carbon martensite and retained austenite ultra-high hole expansion steel and manufacturing method therefor
Panfil et al. The influence of laser re-melting on micro-structure and hardness of gas-nitrided steel
CN105033654B (en) A kind of engine valve tappet and its manufacture method

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23827755

Country of ref document: EP

Kind code of ref document: A2