Hardening method and apparatus utilizing laser beams

Details Hardening method and apparatus utilizing laser beams Hardening method and apparatus utilizing laser beams

2006-12-26

2006-12-26

Johnson, Jonathan (Department: 1725)

Electric heating

Metal heating

By arc

C219S121760

Reexamination Certificate

active

07154067

ABSTRACT:
A material, such as track member for a linear motion guide, having a plurality of rows of portions to be hardened which are thermally influenced on each other, is hardened by emitting laser beams so as to simultaneously irradiate a plurality of rows of portions of the material to be hardened, and moving the laser beams irradiating the rows of portions to be hardened relatively in a longitudinal direction of the portions to be hardened. In this hardening process, the laser beam irradiation is performed such that, in a sectional plane perpendicular to an optical axis of the laser beam, a length of a laser beam irradiation shape in the longitudinal direction of the portion to be hardened is set to be longer than a length thereof in a direction perpendicular to the longitudinal direction.

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