公开(公告)号：WO2014037281A3

公开(公告)日：2014-06-26

申请号：PCT/EP2013067949

申请日：2013-08-29

Applicant: ETXETAR SA

Inventor： GABILONDO AMAIA ,  DOMÍNGUEZ JES S ,  SORIANO CARLOS ,  OCA A JOSÉ LUIS

IPC: C21D9/30 ,  B23K26/08 ,  C21D1/06 ,  C21D1/09 ,  C21D1/34 ,  F16C3/06

CPC classification number: C21D1/09 ,  B23K26/082 ,  B23K26/0823 ,  B23K2201/005 ,  C21D1/06 ,  C21D1/18 ,  C21D1/34 ,  C21D6/00 ,  C21D9/30 ,  C21D2221/00 ,  C22C38/00 ,  F16C3/06 ,  F16C41/008 ,  G05B19/182 ,  Y10T74/2173

Abstract: Method of laser hardening of a surface area of a workpiece, such as a surface of a journal of a crankshaft, comprising: 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 said surface area, and during said relative movement, repetitively scanning the laser beam (2) so as to produce a two-dimensional equivalent effective laser spot (5) on 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 an oil lubrication opening, than in a less heat sensitive subarea, so as to prevent overheating of said more heat sensitive subarea.

Abstract translation: 工件表面区域如曲轴颈部表面的激光淬火方法包括：在工件表面和激光源之间产生相对运动，以允许激光点随后投影到不同的 所述表面区域的部分，并且在所述相对移动期间，重复地扫描所述激光束（2），以在所述表面区域上产生二维等效有效激光光斑（5）。 有效激光光斑的能量分布适应于在较热敏区域（例如在与油润滑开口相邻的区域中）比在较不热敏区域中不同，以防止所述更多的热敏区域过热 热敏区域。