Sheet metal stamping is to apply external pressure to various materials such as metal sheets, metal pipes, metal bars, etc. through hydraulic or mechanical presses by means of stamping dies, so as to deform and separate the metal materials, and obtain a product design structure that fits the mold cavity. Production method.
Frequently Asked Questions About Sheet Metal Stamping Parts
Under the impact of external force, the metal sheet will be cut with the mold closed to remove excess material. However, there are often debris of the material at the port edge of the material, we become burrs, affect the use of the product, and even hurt people’s skin, causing unnecessary trouble.
Generally, the appearance of burrs is related to the accuracy of the mold. When there are too many pores between the upper and lower parts of the mold, the cutting material is not fast and neat enough, and the metal chips are deformed and burrs are formed, resulting in a decrease in the accuracy of the mold and the occurrence of quality problems. risk.
Usually, we will perform precise machining on the mold, adjust the combined gap of all parts to the minimum, maintain the hardness and accuracy of the mold, and reduce the appearance of burrs.
The deformation of the metal sheet under pressure is usually due to the presence of metal scrap or debris inside the mold or on the material. It is necessary to clean the mold and worktable before stamping to avoid waste chips from damaging the surface of the product.
This is mostly because metal scraps and foreign objects are attached to the rollers of the conveying material, and the imprints appear at regular circumferential intervals. Therefore, when the rolled material is running on the automatic feeder, it must be cleaned and inspected regularly.
This is mostly because the roll material is on the edge of the automatic feeder, and the effective gap is too small, and the conveyor causes damage during the conveying process, which will affect the closing of the mold, thereby affecting the accuracy of the product.
This is a very common problem that scratches the surface of the material due to the transportation and handling of the material. Therefore, during the material transportation and handling process, the material is fully protected to prevent damage to the mold caused by scratching the material, and the quality of the material is checked before the stamping process.
Damage on the mold can also cause scratches on the product, so the mold should be checked regularly to eliminate hidden dangers and repair the mold immediately.
Usually, metal materials are analyzed and tested before being put into production. Materials with different hardness and yield strength require different mold designs.
When the material has high hardness and poor plasticity, the blank holder force of the mold is too large, resulting in the material unable to be formed. , the bottom material is cracked, so the hardness of the material or the blank holder force of the die should be adjusted appropriately.
side wrinkles
During the process stamping of the product, wrinkles appear on the side, indicating that the matching space of the mold is too large, or the thickness of the material is reduced, so that the material cannot stick to the mold. produce wrinkles.
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