Laser hardening method

European Patent Office Patent

APP PUB NO EP-1842928-A1
SERIAL NO

07405083

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Abstract

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The invention provides a laser hardening method capable of preventing adjacent already-hardened layers from being annealed. In the laser hardening method of the present invention, conduits C1, C2 and C3 are processed in advance midway between pitches P1 along which a hardening nozzle 190 performs overlap hardening. After moving the nozzle 190 along a center line L3 to process a hardening layer H23, the nozzle 190 is moved in parallel for a single pitch P1 to perform hardening of a hardening layer H24. Thermal energy E1 of the laser beam LB is also irradiated toward the direction of the hardening layer H23, but it is blocked by the conduit C3 that prevents the laser beam from annealing the hardening layer H23.

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Patent Owner(s)

Patent OwnerAddress
YAMAZAKI MAZAK CORPJPAICHI PREFECTURE JAPAN AICHI

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Inventor(s)

Inventor Name Address
YAMAZAKI TSUNEHIKO NIWA-GUN AICHI 480-0197
MIYAKAWA NAOOMI NIWA-GUN AICHI 480-0197

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