Abstract: A method of laser hardening of a surface area of a workpiece, such as a surface of a journal of a crankshaft, including the steps of generating a relative movement between the surface of the workpiece and a laser source to allow a laser spot to subsequently be projected onto different portions of the surface area, and during the relative movement, repetitively scanning the laser beam so as to produce a two-dimensional equivalent effective laser spot on the surface area. The energy distribution of the effective laser spot is adapted so that it is different in a more heat sensitive subarea, such as in an area adjacent to an oil lubrication opening, than in a less heat sensitive subarea, so as to prevent overheating of the more heat sensitive subarea.
Type:
Grant
Filed:
September 10, 2018
Date of Patent:
March 30, 2021
Assignee:
EXTEOTAR, S.A.
Inventors:
Amaia Gabilondo, Jesús Domínguez, Carlos Soriano, José Luis Ocaña