Five typical broken failures of heavy-duty forging die are analyzed. Analysis is performed on the broken failure conditions from the points of forging die’s configuration characters, working principle, forging die manufacture, forging technology and forging die setting. The method for solving these problems are proposed.

The results show that heavy-duty forging die failure is resulted from bad environment and force bearing mode. Many reasons cause forging die failures , such as die design,heat treatment,fixing,machining flowing line direction,and worker’s emotion. It is not enough to improve forging die making quality. The importance is to pay attention to every working points so as to reduce the forging die failures