laser hardening method of a surface of a crankshaft journal; laser hardening method of a one-piece surface; system for hardening at least part of the surface of a part; computer program; information bearer; apparatus for hardening a surface area of a part; crankshaft; and method of programming a device

摘要

laser-hardening method of a surface of a crankshaft journal; laser hardening method of a one-piece surface; system for hardening at least part of the surface of a part; computer program; information bearer; apparatus for hardening a surface area of a part; crankshaft; and method of programming an apparatus a laser hardening method of a part surface area, such as a crankshaft journal surface, comprising: generating relative motion between the part surface and a laser source to enable that a laser point is subsequently projected onto different portions of said surface area and, during said relative motion, repeatedly sweeps the laser beam (2) so as to produce an equivalent two-dimensional effective laser point (5). in said 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 a lubrication hole, than in a less heat sensitive subarea. avoid overheating of the more heat sensitive subarea. 1/1