After installation and commissioning, qualified workpieces can be produced normally. This process is called the service of the mold. In general, we always hope that the mold can have a long enough service life to meet the actual needs of production.
However, the mold may have certain defects in the manufacturing process, or some defects may appear gradually during the service process, such as micro cracks, slight wear, deformation, etc., in this case, the mold can continue to work despite hidden dangers. This state of defect, but not losing its ability to serve, is called damage to the mold.
The drawing die is damaged for some reason, or the mold damage accumulates to a certain extent, causing the mold to be damaged and unable to continue to serve, which is called the failure of the mold. In the production, if the main working parts of the mold are damaged and the qualified workpiece cannot be continuously punched out, the mold is considered to be invalid. The failure modes of stamping dies are generally plastic deformation, wear, fracture or cracking, metal fatigue and corrosion, and the like.
The failure of the wire drawing die can be roughly divided into two categories according to the time of occurrence: normal failure and early failure.
The wire drawing die has been 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 the normal service life, which is a normal failure. The mold does not reach the specified period of design use, causing early damage such as chipping, chipping, breaking, etc.; or failure to continue service due to severe local wear and plastic deformation, which is an early failure. For molds that fail early, it is necessary to find out the cause of the mold and try to take remedial measures.