Evaluation Approach for Measuring the Skill Transfer Level in the Forging Die Polishing

In forging parts production, the die life is important for the production efficiency. It is required for more skillful craftspeople because the die life depends on damage of scratches. Therefore it is important to succeed their expertise constantly. It takes several years for craftspeople to be the expert on the job training. In this study, in order to accelerate their expertise transferring, we analyzed their expertise in focusing on quality of polishing in a forging part. Craftspeople with different time of the experience were entered and compared in this experiment. Their skills were measured by checking the quality including the roughness on the die surface, the variation from the designated thickness and the work time.