JPS57177926A - Method and device for hardening of sliding surface of cam - Google Patents

Method and device for hardening of sliding surface of cam

Info

Publication number
JPS57177926A
JPS57177926A JP6184581A JP6184581A JPS57177926A JP S57177926 A JPS57177926 A JP S57177926A JP 6184581 A JP6184581 A JP 6184581A JP 6184581 A JP6184581 A JP 6184581A JP S57177926 A JPS57177926 A JP S57177926A
Authority
JP
Japan
Prior art keywords
sliding surface
cam
torch
electrode
melting
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
JP6184581A
Other languages
Japanese (ja)
Other versions
JPS6140014B2 (en
Inventor
Makoto Harine
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.)
Mitsubishi Motors Corp
Original Assignee
Mitsubishi Motors 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 Mitsubishi Motors Corp filed Critical Mitsubishi Motors Corp
Priority to JP6184581A priority Critical patent/JPS57177926A/en
Publication of JPS57177926A publication Critical patent/JPS57177926A/en
Publication of JPS6140014B2 publication Critical patent/JPS6140014B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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

Abstract

PURPOSE:To form a sliding surface of constant melting depth and melting width, and uniform abrasion-resistant strength in the stage of heating and melting the sliding surface of a cam with a torch and forming a hardened white pig iron layer by moving the torch at approximately a constant angle with respect to the sliding surface of the cam. CONSTITUTION:The B-C in the connection part 7 of a cam 4 preheated to prescribed temp. is positioned horizontally, and the distance between the electrode 8 of a torch 1 which is faced opposite to the point A and the sliding surface of the cam 4 is set constant. Next, gaseous Ar is ejected through a nozzle 9, and electric current is supplied between the electrode 8 and the cam 4 to heat and melt the sliding surface in a circular shape by the arc generated by this. At this same instant, a driving device 3 is driven with a motor 2 move the torch 1 horizontally up to A-C, thereby heating and melting the sliding surface between these over the prescribed width. Next, when the electrode 8 faces the point C, the movement of the torch 1 is stopped, and the cam 4 is rotated with the center of curvature of an eccentric circle part 6 as a central axis, thence the sliding surface is heated and melted with the electrode 8 from C up to D in the same manner. Thereafter, the sliding areas between D-E, E-F are heated and melted successively, and are cooled, whereby the sliding surface of uniform abrasion-resistant strength is formed.
JP6184581A 1981-04-22 1981-04-22 Method and device for hardening of sliding surface of cam Granted JPS57177926A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6184581A JPS57177926A (en) 1981-04-22 1981-04-22 Method and device for hardening of sliding surface of cam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6184581A JPS57177926A (en) 1981-04-22 1981-04-22 Method and device for hardening of sliding surface of cam

Publications (2)

Publication Number Publication Date
JPS57177926A true JPS57177926A (en) 1982-11-01
JPS6140014B2 JPS6140014B2 (en) 1986-09-06

Family

ID=13182825

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6184581A Granted JPS57177926A (en) 1981-04-22 1981-04-22 Method and device for hardening of sliding surface of cam

Country Status (1)

Country Link
JP (1) JPS57177926A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5993832A (en) * 1982-11-18 1984-05-30 Mitsubishi Motors Corp Melting device for sliding surface of cam
JPS5993831A (en) * 1982-11-17 1984-05-30 Mitsubishi Motors Corp White pig iron hardening method of sliding surface of cam
JPS5996225A (en) * 1982-11-22 1984-06-02 Mitsubishi Motors Corp White iron hardening method of sliding surface of cam
JPS60211015A (en) * 1984-04-04 1985-10-23 Honda Motor Co Ltd Method for remelting cam
JPS60211016A (en) * 1984-04-04 1985-10-23 Honda Motor Co Ltd Method for working cam before remelting
JPS60243222A (en) * 1984-04-09 1985-12-03 Honda Motor Co Ltd Formation of treatment trajectory in remelting treatment
DE3626808A1 (en) * 1985-08-09 1987-02-19 Toyota Motor Co Ltd METHOD FOR PRODUCING A CAMSHAFT WITH A MELTED AND COOLED SURFACE LAYER
US4718952A (en) * 1985-08-09 1988-01-12 Toyota Jidosha Kabushiki Kaisha Process for producing a remelted and chilled camshaft
US4720312A (en) * 1985-08-08 1988-01-19 Toyota Jidosha Kabushiki Kaisha Process for producing surface remelted chilled layer camshaft
JPH0558807U (en) * 1992-10-22 1993-08-03 三菱自動車工業株式会社 Engine oil return structure

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5993831A (en) * 1982-11-17 1984-05-30 Mitsubishi Motors Corp White pig iron hardening method of sliding surface of cam
JPS5993832A (en) * 1982-11-18 1984-05-30 Mitsubishi Motors Corp Melting device for sliding surface of cam
JPS5996225A (en) * 1982-11-22 1984-06-02 Mitsubishi Motors Corp White iron hardening method of sliding surface of cam
JPS60211015A (en) * 1984-04-04 1985-10-23 Honda Motor Co Ltd Method for remelting cam
JPS60211016A (en) * 1984-04-04 1985-10-23 Honda Motor Co Ltd Method for working cam before remelting
JPS6366882B2 (en) * 1984-04-04 1988-12-22 Honda Motor Co Ltd
JPS60243222A (en) * 1984-04-09 1985-12-03 Honda Motor Co Ltd Formation of treatment trajectory in remelting treatment
US4720312A (en) * 1985-08-08 1988-01-19 Toyota Jidosha Kabushiki Kaisha Process for producing surface remelted chilled layer camshaft
DE3626808A1 (en) * 1985-08-09 1987-02-19 Toyota Motor Co Ltd METHOD FOR PRODUCING A CAMSHAFT WITH A MELTED AND COOLED SURFACE LAYER
US4718952A (en) * 1985-08-09 1988-01-12 Toyota Jidosha Kabushiki Kaisha Process for producing a remelted and chilled camshaft
US4787944A (en) * 1985-08-09 1988-11-29 Toyota Jidosha Kabushiki Kaisha Process for producing surface remelted chilled layer camshaft
JPH0558807U (en) * 1992-10-22 1993-08-03 三菱自動車工業株式会社 Engine oil return structure

Also Published As

Publication number Publication date
JPS6140014B2 (en) 1986-09-06

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