Title:
METHOD FOR MANUFACTURING SHAFT-LIKE COMPONENT
Document Type and Number:
Japanese Patent JP2014125669
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a shaft-like component, allowing for high quality hardening by a simple constitution, with high productivity.SOLUTION: In hardening a revolving crank shaft 1 with exposure to laser beam B by laser irradiation means 12, fillet R parts 3a and 3b and a journal 2 are exposed to laser radiation by laser radiation means 12 using an H-shaped scanning pattern for continuously repeating the scanning of the fillet R parts 3a and 3b along circumferential direction and the journal 2. Heat is inputted to the fillet R parts 3a and 3b with continuous exposure to the laser beam B in circumferential direction, so that a desired hardening layer is secured in the fillet R parts 3a and 3b. On the other hand, excessive heat input to the journal 2 with exposure to the laser beam B is prevented, so that the occurrence of deformation or cracks in the shaft-like component is avoided. Consequently high quality hardening can be achieved.
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Inventors:
MIYAMOTO NOBUYUKI
Application Number:
JP2012284822A
Publication Date:
July 07, 2014
Filing Date:
December 27, 2012
Export Citation:
Assignee:
FUJI HEAVY IND LTD
International Classes:
C21D9/30; C21D1/09; F16C3/04
Domestic Patent References:
| JP2015532686A | 2015-11-12 | |||
| JP2004084931A | 2004-03-18 | |||
| JPS62110253U | 1987-07-14 | |||
| JP2012144768A | 2012-08-02 |
Foreign References:
| WO2014037281A2 | 2014-03-13 |
Attorney, Agent or Firm:
Satoshi Eto
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