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30 years of experience in electronic hardware shrapnel customization Specializing in high difficulty, high precision, special-shaped non-standard shrapnel processing plant

Quality control difficulties in the stamping process of shrapnel!

 Back to list Source: Heju hardware Browse: - Release date: January 16, 2020【 large in Small
Quality control point of shrapnel stamping process In general, the shapes of shrapnel are different and the batches are large. The mold developed by our company is also aimed at the processing of large quantities of special-shaped shrapnel. The shape of some special-shaped shrapnel needs dozens of molding times to be processed. Therefore, when opening the mold, how to strictly control the error of each molding station and make the stations cooperate with each other, so as to control the final forming accuracy of the shrapnel.
      
  Electroplating difficulties Most electronic products need electroplating. The evaluation index is usually salt spray test and whether the coating thickness is uniform. It is usually 48h, 72h or 96h, and the test report of film thickness tester is required for each electroplating. But some products after electroplating often appear partial electroplating, or uneven coating, white spots, yellowing and so on. This is usually caused by the nonstandard process of electroplating plant, and a small part of it is due to lack of experience or cost saving, and so on.
         
      
Performance index after molding: There will be elasticity test, stiffness test, tensile test, yield test, fatigue test. If the above indicators are far from the predicted results, it is usually due to material problems or heat treatment problems. The unqualified tolerance of bending accuracy / R angle accuracy / radian is directly related to the die edge and punch. The coordination degree of punch and die and the rationality of die design determine the stamping efficiency.

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