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Metal Stamping Parts Features Metal Stamping Parts Frequently Asked Questions

Essai Industries Co.,Ltd | Updated: Apr 14, 2018

The main features of metal stampings:

1. The metal stamping parts are manufactured by stamping under the premise of low material consumption. The parts are light in weight and good in rigidity. After the sheet metal undergoes plastic deformation, the internal structure of the metal is improved and the strength of the stamping parts is improved. Increased.


  2. Metal stamping parts have a high dimensional accuracy, are uniform with the size of the module, and have better interchangeability. No further machining is required to meet general assembly and use requirements.


  3. In the stamping process, because the surface of the material is not damaged, it has a better surface quality and a smooth and beautiful appearance, which provides convenient conditions for surface painting, plating, phosphating and other surface treatments.1713792889_127671591.jpg

Common Problems and Causes of Metal Stamping Parts Processing:

1. Burrs: In the process of punching or trimming, there is not enough material left in the process. The burrs are generated at the lower part of the section of the steel plate. When the burr height is 0.2mm or more, the iron powder will damage the die and produce bumps. .


2. Concave-concave: The surface of the material is abnormally raised or sunken, which is caused by the foreign matter (iron filings, dust) mixed in the winding wire.


3. Roll printing: The cleaning roller or feeding roller is caused by the attachment of foreign matter (occurs at a fixed pitch). Under normal circumstances, the roller printing on the sheet material can be removed.


4. Slippage: Occurs when a sudden stop or acceleration occurs due to a roller sliding.


5. Coil crushing may be edge wrinkles: the guide roller of the unwinding line may or may not produce the wrinkling situation when the gap between the guide rollers on the die is small, which is caused by the unqualified feed of the web.


6. Scratches: The main reason for the occurrence of scratches on the parts. There are sharp flaws on the mold or metal dust particles fall into the mold. Prevent measures to repair the damage on the mold and remove metal dust.


7. Bottom cracking: The main reason for the cracking of the bottom of the part is the poor plasticity of the material or the over-pressing of the presser edge of the die. Preventive measures are to replace the plastic with better material or to relax the blank holder.


8. Wrinkles on the side wall: The main cause of wrinkles on the side wall of the part is that the thickness of the material is not enough (thickness is smaller than the minimum allowable thickness) or eccentricity occurs when the upper and lower molds are installed, resulting in large gaps on one side and small gaps on the other side. Preventive measures for the immediate replacement of materials and re-adjust the mold.