Stamping dies are the basis for processing stamping parts, and stamping parts need to achieve a fixed shape and size through the die. If there is a problem with the stamping die, the entire subsequent production of the stamping processing plant will also be affected. High-speed continuous stamping mold manufacturers provide mold design, stamping, injection molding, automatic assembly one-stop service. Next, we will analyze some common problems of stamping dies for you.
1. The concave-convex mold is broken
In the entire stamping process, the places that bear the greatest stamping pressure are the die and punch of the entire mold. Therefore, if the concave-convex mold is not properly designed, it will be easily broken and damaged. The breakage of the punch is a kind of breakage of the punch.
The main causes of stamping die fracture include:
1. Improper selection of materials
The choice of mold material needs to be determined in combination with the material and size of all processed stamping parts. For example, the processing of stainless steel stampings requires the selection of better mold materials.
2. Unqualified mold heat treatment
After mold heat treatment, the hardness is too low or too high. It is recommended to determine the appropriate hardness range according to the usage.
3. Unreasonable demoulding design
The gap between the die and the punch must be within a reasonable range. If the gap is too large, the processed stamping parts will produce burrs, and if the gap is too small, it will cause the die or punch to break.
When the concave-convex mold breaks, it is necessary to carefully analyze the cause and solve the problem. Sometimes it is possible to continue using the mold after regrinding, and in some cases the mold needs to be reworked according to the drawings.
Second, mold deformation
When the mold is deformed, the shape of the processed stamping parts will also be deformed, so that the size of the produced product cannot meet the requirements. The deformation of the stamping die is mainly caused by improper material selection or improper heat treatment. The force of the die during the stamping process can cause deformation.
Three, mold wear
The blade wear we often say in the stamping industry is a manifestation of die wear. During the stamping process, the friction between the upper and lower dies and the material will inevitably be worn. When it is severely worn, the processed stamping parts will have large burrs, which will lead to unqualified products. However, die wear can usually be resolved by grinding.
