Application of modified wear model and process simulation for tool life evaluation in warm forging of SS304 stainless steel nut

摘要

This study focuses on developing a method for tool life evaluation in the design stage. The essential part of this method is to combine the modified wear model and process simulation to predict the tool wear. A wear model, based on the theory originally proposed by Archard, is modified to account for the working temperature effect in warm forging. Through the process simulation, the tool stress, the temperature distribution on the tool and the travel length of the tool-workpiece interface at the most critical part have been obtained. Then the tool wear of the different tool design has been evaluated from the modified wear model. An industrial case of stainless steel nut warm forging is presented to demonstrate that the tool life can be increased by a better tool design, based on the tool wear evaluation proposed by this study.