How can we make a high-quality mold?

Mold appearance, size, fit

1. Defects are not allowed on the surface of the product: lack of material, scorch, top white, white line, peak, blistering, whitening (or cracking, breaking), baking, wrinkles.
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2. Welding marks: Generally, the length of circular perforated welding marks is not more than 5mm, and the length of special-shaped perforated welding marks is less than 15mm. The strength of the welding marks can pass functional safety test.

3. Shrinkage: Shrinkage is not allowed in obvious areas, and slight shrinkage is not allowed in unobvious areas (no dents).

4. Generally, the flatness of small products is less than 0.3mm. If there are assembly requirements, the assembly requirements must be guaranteed.

5. There should be no air lines or flowers in the obvious appearance, and the product should generally not have bubbles.

6. The geometric shape and dimensional accuracy of the product should conform to the formal and valid drawing drawings (or 3D files). The product tolerance should be based on the tolerance principle. The shaft size tolerance is negative tolerance and the hole size tolerance is positive tolerance. As required.

7. Product wall thickness: product wall thickness generally requires an average wall thickness, non-average wall thickness should meet the requirements of the drawings, and the tolerance should be -0.1mm according to the characteristics of the mold.

8. Product coordination: surface shell bottom shell coordination: the surface misalignment is less than 0.1mm, there must be no scratches, and the holes, shafts, and surfaces with matching requirements must ensure the matching interval and use requirements.