JPS5662916A - Production of bushing - Google Patents

Production of bushing

Info

Publication number
JPS5662916A
JPS5662916A JP13922179A JP13922179A JPS5662916A JP S5662916 A JPS5662916 A JP S5662916A JP 13922179 A JP13922179 A JP 13922179A JP 13922179 A JP13922179 A JP 13922179A JP S5662916 A JPS5662916 A JP S5662916A
Authority
JP
Japan
Prior art keywords
bushing
hardening
inside circumferential
time
abrasion resistance
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.)
Pending
Application number
JP13922179A
Other languages
Japanese (ja)
Inventor
Yoshinori Marufuku
Hidekazu Aoki
Masahiro Nakajima
Yukio Suzaki
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13922179A priority Critical patent/JPS5662916A/en
Publication of JPS5662916A publication Critical patent/JPS5662916A/en
Pending legal-status Critical Current

Links

Landscapes

  • Laser Beam Processing (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

PURPOSE:To form a hardened layer of extremely small heat treatment strain and superior abrasion resistance by irradiating a bushing by focusing laser light while rotating the same at the time of hardening the inside circumferential of the bushing for rolling stock. CONSTITUTION:Laser light 4a generated by a CO2 laser oscillator 3 is reflected and focused by a concave reflection mirror 5 and the inside circumferential surface of a bushing 2 is irradiated by this light, whereby it is hardened and heat treated. At this time, the bushing 2 is placed on a moving device 6 and is rotated; at the same time, it is moved in the axial direction Y so that the inside circumferential surface of the bushing 2 is uniformly irradiated. The heat treatment strain which occurs in the case of surface hardening by carburizing and hardening is not produced; in addition, such a defect that the hardness is decreased by the formation of metal structure owing to the diffusion of carbon is obviated and the hardened layer having extremely high abrasion resistance is formed.
JP13922179A 1979-10-30 1979-10-30 Production of bushing Pending JPS5662916A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13922179A JPS5662916A (en) 1979-10-30 1979-10-30 Production of bushing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13922179A JPS5662916A (en) 1979-10-30 1979-10-30 Production of bushing

Publications (1)

Publication Number Publication Date
JPS5662916A true JPS5662916A (en) 1981-05-29

Family

ID=15240323

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13922179A Pending JPS5662916A (en) 1979-10-30 1979-10-30 Production of bushing

Country Status (1)

Country Link
JP (1) JPS5662916A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6140605A (en) * 1995-02-06 2000-10-31 Elotherm Gmbh Method and device for treating the surfaces of component bores

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6140605A (en) * 1995-02-06 2000-10-31 Elotherm Gmbh Method and device for treating the surfaces of component bores

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