Depending on the operation conditions and dominant damage mode, the relevant criteria for the selection of proper surface conditions and hard facing alloys are considered. Important factors for the lifetime of forging dies include die material, die design, die manufacturing parameters, and forging conditions which may influence the corresponding type of failure or damage. Due to the fact that 10 to 30% of the total costs of hot forged components are related to the forging die manufacturing, it is essential to consider powerful and economical repair technologies to increase the lifetime of hot forging dies.
