EP0064367A3 - Method for inductively heating valve seat inserts - Google Patents

Method for inductively heating valve seat inserts

Info

Publication number
EP0064367A3
EP0064367A3 EP82302088A EP82302088A EP0064367A3 EP 0064367 A3 EP0064367 A3 EP 0064367A3 EP 82302088 A EP82302088 A EP 82302088A EP 82302088 A EP82302088 A EP 82302088A EP 0064367 A3 EP0064367 A3 EP 0064367A3
Authority
EP
European Patent Office
Prior art keywords
valve seat
insert
inductor
energizing
bore
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
EP82302088A
Other versions
EP0064367B1 (en
EP0064367A2 (en
Inventor
Norbert Raymond Balzer
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.)
Park Ohio Holdings Corp
Original Assignee
Park Ohio Industries 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 Park Ohio Industries Inc filed Critical Park Ohio Industries Inc
Priority to AT82302088T priority Critical patent/ATE17814T1/en
Publication of EP0064367A2 publication Critical patent/EP0064367A2/en
Publication of EP0064367A3 publication Critical patent/EP0064367A3/en
Application granted granted Critical
Publication of EP0064367B1 publication Critical patent/EP0064367B1/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/22—Valve-seats not provided for in preceding subgroups of this group; Fixing of valve-seats
    • 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
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Articles (AREA)
  • Details Of Valves (AREA)
  • General Induction Heating (AREA)
  • Lift Valve (AREA)

Abstract

A method for heating a conical valve seat surface on a ferrous seat ring insert which is fixedly received by a bore in an aluminum engine component. The method involves high power induction heating including the steps of locating an inductor adjacent the valve seat surface and then energizing the inductor by a power source having some predetermined frequency and elevated power rating. The method also includes the step of maintaining the inductor in an energized condition for some predetermined period of time to transform the metal forming the valve seat into an austenitic structure to a preselected depth. The steps of energizing and maintaining are coordinated such that the desired transformation is obtained in a very short time interval. This then advantageously prevents deleterious expansion of the insert heat transfer through the insert to the aluminum engine component which would otherwise adversely affect the close fitting relationship between the insert and bore.
EP82302088A 1981-05-04 1982-04-23 Method for inductively heating valve seat inserts Expired EP0064367B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82302088T ATE17814T1 (en) 1981-05-04 1982-04-23 METHOD OF INDUCTION HEATING VALVE SEAT INSERTS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25985681A 1981-05-04 1981-05-04
US259856 1988-10-19

Publications (3)

Publication Number Publication Date
EP0064367A2 EP0064367A2 (en) 1982-11-10
EP0064367A3 true EP0064367A3 (en) 1983-03-30
EP0064367B1 EP0064367B1 (en) 1986-01-29

Family

ID=22986708

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82302088A Expired EP0064367B1 (en) 1981-05-04 1982-04-23 Method for inductively heating valve seat inserts

Country Status (6)

Country Link
EP (1) EP0064367B1 (en)
JP (1) JPS6047884B2 (en)
AT (1) ATE17814T1 (en)
CA (1) CA1187142A (en)
DE (1) DE3268757D1 (en)
MX (1) MX151639A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3373317B2 (en) * 1995-02-16 2003-02-04 ヤマハ発動機株式会社 Valve seat structure of cylinder head
EP0730085B1 (en) * 1995-02-28 2000-01-19 Yamaha Hatsudoki Kabushiki Kaisha A cylinder head and a method for producing a valve seat
JP3380081B2 (en) * 1995-03-13 2003-02-24 ヤマハ発動機株式会社 Valve seat
US5778531A (en) * 1995-09-14 1998-07-14 Yamaha Hatsudoki Kabushiki Kaisha Method of manufacturing cylinder head for engine
JPH0979014A (en) * 1995-09-14 1997-03-25 Yamaha Motor Co Ltd Manufacture of cylinder head for engine
US5745993A (en) * 1996-02-27 1998-05-05 Yamaha Hatsudoki Kabushiki Kaisha Valve seat
US10774939B2 (en) * 2018-04-12 2020-09-15 Cla-Val Co. Valve with integral insert-cast seat and related method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1035179B (en) * 1955-05-20 1958-07-31 Saviem Process for the heat treatment of valve seats
US3837934A (en) * 1971-06-09 1974-09-24 Park Ohio Industries Inc Method for inductively heating valve seats
USRE29046E (en) * 1971-06-09 1976-11-23 Park-Ohio Industries, Inc. Method and apparatus for inductively heating valve seats
EP0041317A1 (en) * 1980-05-08 1981-12-09 Park-Ohio Industries, Inc. Method and apparatus for inductively heating valve seat inserts for hardening the seat surfaces

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1035179B (en) * 1955-05-20 1958-07-31 Saviem Process for the heat treatment of valve seats
US3837934A (en) * 1971-06-09 1974-09-24 Park Ohio Industries Inc Method for inductively heating valve seats
USRE29046E (en) * 1971-06-09 1976-11-23 Park-Ohio Industries, Inc. Method and apparatus for inductively heating valve seats
EP0041317A1 (en) * 1980-05-08 1981-12-09 Park-Ohio Industries, Inc. Method and apparatus for inductively heating valve seat inserts for hardening the seat surfaces

Also Published As

Publication number Publication date
ATE17814T1 (en) 1986-02-15
JPS6047884B2 (en) 1985-10-24
MX151639A (en) 1985-01-23
EP0064367B1 (en) 1986-01-29
EP0064367A2 (en) 1982-11-10
DE3268757D1 (en) 1986-03-13
CA1187142A (en) 1985-05-14
JPS57194212A (en) 1982-11-29

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OSBORN JR TOCCO HARDENING

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