JPS57140543A - Reinforcing method of pin boss part in piston for internal combustion engine - Google Patents

Reinforcing method of pin boss part in piston for internal combustion engine

Info

Publication number
JPS57140543A
JPS57140543A JP2540481A JP2540481A JPS57140543A JP S57140543 A JPS57140543 A JP S57140543A JP 2540481 A JP2540481 A JP 2540481A JP 2540481 A JP2540481 A JP 2540481A JP S57140543 A JPS57140543 A JP S57140543A
Authority
JP
Japan
Prior art keywords
pin boss
boss part
piston
treatment
combustion engine
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
JP2540481A
Other languages
Japanese (ja)
Other versions
JPS6344939B2 (en
Inventor
Kenji Mihara
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP2540481A priority Critical patent/JPS57140543A/en
Publication of JPS57140543A publication Critical patent/JPS57140543A/en
Publication of JPS6344939B2 publication Critical patent/JPS6344939B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/10—Connection to driving members
    • F16J1/14—Connection to driving members with connecting-rods, i.e. pivotal connections
    • F16J1/16—Connection to driving members with connecting-rods, i.e. pivotal connections with gudgeon-pin; Gudgeon-pins

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

PURPOSE:To reinforce a pin boss part in a piston cast with a ring tray groove, by applying the T6 treatment to only the periphery of the pin boss part. CONSTITUTION:Normal T5 treatment is applied to a piston 2 after it is cast, and then only a pin boss part 3 (pin hole part) is locally heated by high frequency induction heating, burner heating, etc., successively applied water quenching and annealing, then only the periphery of the pin boss part is performed T6 treatment. In this way, the T6 treatment can be applied to the pin boss part 3 without causing exfoliation of a ring tray groove part 1, then the pin boss part 3 can be reinforced.
JP2540481A 1981-02-25 1981-02-25 Reinforcing method of pin boss part in piston for internal combustion engine Granted JPS57140543A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2540481A JPS57140543A (en) 1981-02-25 1981-02-25 Reinforcing method of pin boss part in piston for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2540481A JPS57140543A (en) 1981-02-25 1981-02-25 Reinforcing method of pin boss part in piston for internal combustion engine

Publications (2)

Publication Number Publication Date
JPS57140543A true JPS57140543A (en) 1982-08-31
JPS6344939B2 JPS6344939B2 (en) 1988-09-07

Family

ID=12164966

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2540481A Granted JPS57140543A (en) 1981-02-25 1981-02-25 Reinforcing method of pin boss part in piston for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS57140543A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019059109A1 (en) * 2017-09-22 2019-03-28 日立オートモティブシステムズ株式会社 Piston for internal combustion engine and method for manufacturing piston

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019059109A1 (en) * 2017-09-22 2019-03-28 日立オートモティブシステムズ株式会社 Piston for internal combustion engine and method for manufacturing piston
JP2019056340A (en) * 2017-09-22 2019-04-11 日立オートモティブシステムズ株式会社 Piston of internal combustion engine and manufacturing method of piston

Also Published As

Publication number Publication date
JPS6344939B2 (en) 1988-09-07

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