Evaluation of the Fatigue Characteristics of Laser-processed Hot Work Tool Steel Based on Reliability

^1, , ^2, , ^3, , ^4, , ^5,

1.Graduate School of Engineering, Himeji Institute of Technology, Japan

2.Himeji Institute of Technology, Japan

3.Graduate School of Engineering, Himeji Institute of Technology, Japan

4.Graduate School of Engineering, Himeji Institute of Technology, Japan

5.Technical Research Laboratories, Sanyo Special Steel Co, Japan

It is reported that laser-processing is effective to repair the heat checks, which are fine shallow cracks on a surfaceof die-casting dies.

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