JPS57171617A - Hardening method by laser - Google Patents

Hardening method by laser

Info

Publication number
JPS57171617A
JPS57171617A JP5623681A JP5623681A JPS57171617A JP S57171617 A JPS57171617 A JP S57171617A JP 5623681 A JP5623681 A JP 5623681A JP 5623681 A JP5623681 A JP 5623681A JP S57171617 A JPS57171617 A JP S57171617A
Authority
JP
Japan
Prior art keywords
laser
coated
hardening
agent
hardened
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
JP5623681A
Other languages
Japanese (ja)
Inventor
Kazuo Nakayama
Sadao Sugiyama
Hidekazu Aoki
Takashi Meguro
Zenichi Mochizuki
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
Shibaura Machine Co Ltd
Original Assignee
Toshiba Corp
Toshiba Machine Co Ltd
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, Toshiba Machine Co Ltd, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP5623681A priority Critical patent/JPS57171617A/en
Publication of JPS57171617A publication Critical patent/JPS57171617A/en
Pending 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

PURPOSE:To harden the entire surface of parts to be hardened uniformly in the stage of hardning a plate-member having projecting parts by laser by controlling the thickness of a laser absorbing film to be coated in accordance with the angle of inclination and mass of the surfaces to be hardened. CONSTITUTION:In the stage of heating and hardening the surface of a platelike member 1 having projecting parts 2 like teeth by irradiating the same with laser 4, a laser absorbing agent 3 such as graphite or manganese phosphate is coated on the surface to be hardened in order to improve hardening efficiency. In this case, the coating thickness of the agent 3 is adjusted to 10-20mum in accordance with the depth of hardening layers 5 and the angle of irradiation of the laser. The laser absorbing agent is not coated on the surface 8 of the teeth 2 which have high absorption rates of laser, are of small mass and are vulnerable to overheating according to the irradiation angle of the laser 4 or said agent is coated to thin thicknesses of 0-3mum. The hardening layers 5 of uniform thickness are formed over the entire surface including the parts 2.
JP5623681A 1981-04-16 1981-04-16 Hardening method by laser Pending JPS57171617A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5623681A JPS57171617A (en) 1981-04-16 1981-04-16 Hardening method by laser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5623681A JPS57171617A (en) 1981-04-16 1981-04-16 Hardening method by laser

Publications (1)

Publication Number Publication Date
JPS57171617A true JPS57171617A (en) 1982-10-22

Family

ID=13021460

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5623681A Pending JPS57171617A (en) 1981-04-16 1981-04-16 Hardening method by laser

Country Status (1)

Country Link
JP (1) JPS57171617A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007140826A1 (en) * 2006-06-03 2007-12-13 Ks Kolbenschmidt Gmbh Process for hardening an annular groove of a piston head by means of laser beams and a piston produced by the process
JP2014208363A (en) * 2013-04-16 2014-11-06 友鉄工業株式会社 Method for manufacturing pressing die

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007140826A1 (en) * 2006-06-03 2007-12-13 Ks Kolbenschmidt Gmbh Process for hardening an annular groove of a piston head by means of laser beams and a piston produced by the process
JP2009540222A (en) * 2006-06-03 2009-11-19 カーエス コルベンシュミット ゲゼルシャフト ミット ベシュレンクテル ハフツング Method for hardening ring groove of piston head by laser beam and piston manufactured by the method
US8297179B2 (en) 2006-06-03 2012-10-30 Ks Kolbenschmidt Gmbh Process for hardening an annular groove of a piston head by means of laser beams and a piston produced by the process
JP2014208363A (en) * 2013-04-16 2014-11-06 友鉄工業株式会社 Method for manufacturing pressing die

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