JPS5647521A - Quenching process by laser - Google Patents

Quenching process by laser

Info

Publication number
JPS5647521A
JPS5647521A JP12380379A JP12380379A JPS5647521A JP S5647521 A JPS5647521 A JP S5647521A JP 12380379 A JP12380379 A JP 12380379A JP 12380379 A JP12380379 A JP 12380379A JP S5647521 A JPS5647521 A JP S5647521A
Authority
JP
Japan
Prior art keywords
laser beams
teeth
cross
angle
rack
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
JP12380379A
Other languages
Japanese (ja)
Inventor
Masatoshi Inagaki
Ryutaro Jinbo
Tomio Unno
Tomohiko Shida
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP12380379A priority Critical patent/JPS5647521A/en
Publication of JPS5647521A publication Critical patent/JPS5647521A/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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/32—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for gear wheels, worm wheels, or the like

Abstract

PURPOSE:To provide an excellent quenching effect over the entire surface area by a method wherein two laser beams having a specified cross angle are projected onto the surface of the teeth base of a gear or rack so that the laser beams cross over them. CONSTITUTION:Two laser beams having a cross angle more than twice the pressure angle of teeth of a rack, etc. are used. In the case of a rack 10, for example, the rack 10 is being moved in the direction of the arrow 16, and two laser beams 12, 14 having the cross angle twice the pressure angle A are projected so that they cross each other on the base surface 18 of the teeth. In the state of (a), the teeth base surface 18 is quenched. In the state of (b), the left side is quenched. Moving to the teeth surface 22, the right side is started to be quenched at the state of (c). Sequential quenching thus continues. To provide laser beams with a specified angle, a laser beam 26 from an oscillator 24 is changed by an expander 28 in its diameter and formed into a parallel beam 32, which is handled by a division-mirror 34, a cylindrical concave mirrors 36, 38 so that laser beams 12, 14 cross over at the specified location. The process thus provides a quench operation over the entire surface area.
JP12380379A 1979-09-28 1979-09-28 Quenching process by laser Pending JPS5647521A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12380379A JPS5647521A (en) 1979-09-28 1979-09-28 Quenching process by laser

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12380379A JPS5647521A (en) 1979-09-28 1979-09-28 Quenching process by laser

Publications (1)

Publication Number Publication Date
JPS5647521A true JPS5647521A (en) 1981-04-30

Family

ID=14869697

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12380379A Pending JPS5647521A (en) 1979-09-28 1979-09-28 Quenching process by laser

Country Status (1)

Country Link
JP (1) JPS5647521A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5882438A (en) * 1995-12-19 1999-03-16 Bayerische Motoren Werke Aktiengesellschaft Method for the formation of a frangible zone for the fracture separation of a machine part, in particular, a connecting rod for internal combustion engines
CN106086377A (en) * 2016-08-26 2016-11-09 大连日牵电机有限公司 A kind of for change speed gear box ring gear medium frequency induction hardening process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5882438A (en) * 1995-12-19 1999-03-16 Bayerische Motoren Werke Aktiengesellschaft Method for the formation of a frangible zone for the fracture separation of a machine part, in particular, a connecting rod for internal combustion engines
CN106086377A (en) * 2016-08-26 2016-11-09 大连日牵电机有限公司 A kind of for change speed gear box ring gear medium frequency induction hardening process

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