The higher the durability of die accessories, the longer the service life of the die

The durability of die accessories is closely related to the failure phenomenon of die work. The failure phenomenon of die work is that the die loses its original design efficiency due to changes in structural shape, size, and material organization performance of die components during use. When a stamping die has serious structural defects that prevent it from continuing to be used, or if it can work but cannot complete the specified function, it can be considered invalid. The later the failure phenomenon occurs, the higher the durability of the stamping die.
The durability of stamping dies is of great significance in production. The higher the durability of the stamping die, the longer the service life of the stamping die, and the lower the cost of the parts. The structure of the stamping die is the key to affecting its durability. Unreasonable structures can easily lead to poor rigidity and uneven wall thickness distribution, as well as surface defects (such as surface oxidation, decarburization, cracks, scars) that can affect the performance of the material and cause early failure of the stamping die. Choosing appropriate die materials can prevent early failure of the die. Inclusions in mold accessories cause cracks inside the die, causing brittle fracture. During further heat treatment and use, the crack further expands and causes die cracking. During hot processing and annealing of steel, there is sometimes a residual decarburization layer after further machining. Due to the different microstructures of the inner and outer layers, the cooling rate during heat treatment is inconsistent, resulting in cracks and causing die cracking.