JPS57200523A - Method for hardening white pig iron on cam slide surface - Google Patents

Method for hardening white pig iron on cam slide surface

Info

Publication number
JPS57200523A
JPS57200523A JP8480881A JP8480881A JPS57200523A JP S57200523 A JPS57200523 A JP S57200523A JP 8480881 A JP8480881 A JP 8480881A JP 8480881 A JP8480881 A JP 8480881A JP S57200523 A JPS57200523 A JP S57200523A
Authority
JP
Japan
Prior art keywords
slide surface
cam
torch
melt
moved
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
JP8480881A
Other languages
Japanese (ja)
Other versions
JPS6127447B2 (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 JP8480881A priority Critical patent/JPS57200523A/en
Publication of JPS57200523A publication Critical patent/JPS57200523A/en
Publication of JPS6127447B2 publication Critical patent/JPS6127447B2/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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06—Surface hardening
    • C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation

Abstract

PURPOSE:To form a slide surface having a constant melting depth and width and uniform anti-wear strength by heating and melting a cam slide surface while a torch is moved at a definite angle always to said cam slide surface to form a white pig iron hardened layer. CONSTITUTION:A cam 4 is positioned so as to make the B-C slide surface of the connecting part 7 thereof horizontal and an electrode 8 is opposed to said surface vertically. A motor 2 is driven and a torch 1 is moved to a C point from an A point by a drive apparatus 3 as well as simultaneously vibrated to vertical directions in a figure to heat and melt the A-C slide surface of the cam. When the torch 1 reaches the C point, the movement of the torch 1 is stopped and the cam 4 is rotated to similarily heat and melt the C-D slide surface thereof. In the next stage, the cam is stopped so as to make the D-E space of the connecting part 7' thereof and the torch 1 is moved to a righthand direction to similarily heat and melt the D-F slide surface thereof. After the cam 4 is allowed to be cooled naturally, it is cooled by water to form a chill layer alpha having a circular cross area on the slide surface between A-F and a martensite layer beta therearound. In the case of the cam for an internal combustion engine, it is unnecessary to form the layer alpha to a base circular part 5.
JP8480881A 1981-06-01 1981-06-01 Method for hardening white pig iron on cam slide surface Granted JPS57200523A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8480881A JPS57200523A (en) 1981-06-01 1981-06-01 Method for hardening white pig iron on cam slide surface

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8480881A JPS57200523A (en) 1981-06-01 1981-06-01 Method for hardening white pig iron on cam slide surface

Publications (2)

Publication Number Publication Date
JPS57200523A true JPS57200523A (en) 1982-12-08
JPS6127447B2 JPS6127447B2 (en) 1986-06-25

Family

ID=13841013

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8480881A Granted JPS57200523A (en) 1981-06-01 1981-06-01 Method for hardening white pig iron on cam slide surface

Country Status (1)

Country Link
JP (1) JPS57200523A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59150016A (en) * 1983-02-15 1984-08-28 Nippon Piston Ring Co Ltd Sliding member for internal-combustion engine
EP0161624A2 (en) * 1984-05-07 1985-11-21 Toyota Jidosha Kabushiki Kaisha Method of producing a camshaft
JPS60258420A (en) * 1984-05-21 1985-12-20 Honda Motor Co Ltd Remelting and hardening treatment

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10838556B2 (en) 2019-04-05 2020-11-17 Apple Inc. Sensing system for detection of light incident to a light emitting layer of an electronic device display
US11527582B1 (en) 2019-09-24 2022-12-13 Apple Inc. Display stack with integrated photodetectors
US11611058B2 (en) 2019-09-24 2023-03-21 Apple Inc. Devices and systems for under display image sensor
US11592873B2 (en) 2020-02-14 2023-02-28 Apple Inc. Display stack topologies for under-display optical transceivers
US11327237B2 (en) 2020-06-18 2022-05-10 Apple Inc. Display-adjacent optical emission or reception using optical fibers
US11487859B2 (en) 2020-07-31 2022-11-01 Apple Inc. Behind display polarized optical transceiver

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59150016A (en) * 1983-02-15 1984-08-28 Nippon Piston Ring Co Ltd Sliding member for internal-combustion engine
EP0161624A2 (en) * 1984-05-07 1985-11-21 Toyota Jidosha Kabushiki Kaisha Method of producing a camshaft
JPS60258420A (en) * 1984-05-21 1985-12-20 Honda Motor Co Ltd Remelting and hardening treatment
JPS6345446B2 (en) * 1984-05-21 1988-09-09 Honda Motor Co Ltd

Also Published As

Publication number Publication date
JPS6127447B2 (en) 1986-06-25

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