After the wire drawing die is installed and debugged, the qualified workpiece can be produced according to normal conditions. This process is called the service period of the mold. Under normal circumstances, we always hope that the special-shaped drawing die can have a service life exceeding its normal life to meet the actual production needs.

However, some defects may occur in the manufacturing process of the mold, or some defects may gradually appear during the service, such as slight cracks, slight abrasion damage, deformation, etc., in this case, the mold Although there are some hidden dangers, they can continue to work. This defective state, but not completely lost in service, is called the damage of the mold.

The wire drawing die is damaged by some uncertain reasons, or the mold damage accumulates to a certain extent, causing the mold to be damaged and cannot be used. These conditions are called mold failure. However, if the main working parts of the special-shaped drawing die are damaged and the qualified workpiece cannot be punched out, it is considered to be the mold failure. The failure of the wire drawing die can be roughly divided into two categories according to the occurrence time: normal failure and early failure.

The wire drawing die is normally used in a large amount of production, and it is naturally worn or slowly deformed by plastic due to friction and fatigue cracks. It is a normal phenomenon to fail after reaching the specified service life of the product, which is a normal failure. The mold does not reach the specified period of product design and use, and it not only causes early damage such as chipping, chipping, breaking, etc., but is called early failure. For early-type special-shaped wire drawing dies, it is necessary to find out the cause of the stencil and try to take remedial measures.