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Precision Auto Parts
Hardware talk about the dimensional accuracy of precision stamping products
by：Fortuna
2021-03-28
Metal stamping dimensional accuracy refers to the difference between the actual size of the stamping part and the basic size. The smaller the difference, the higher the dimensional accuracy of the metal stamping part. The main factors that cause the dimensional errors of precision stamping products are: 1. The manufacturing accuracy of the convex and concave molds; 2. The gap between the convex and concave molds; 3. The elastic recovery of the material after stamping; 4. The accidental factors in the production process, such as positioning Inaccurate, unstable material properties, etc. 5. The precision and adaptability of the precision stamping die and punching machine. The dimensional accuracy of metal stamping parts can generally be divided into two types: precision level and ordinary level. Precision stamping products are the accuracy that can be achieved in the stamping process technology, while the ordinary grade is the accuracy that can be achieved by more economical means. When the mold manufacturing accuracy is high, the external dimension accuracy of the metal stamping parts can reach IT10 level, and the inner hole size can reach IT9 level. The surface quality of the metal stamping parts should not be higher than the surface quality of the raw materials, otherwise the subsequent processing needs to be increased to achieve this, which increases the production cost.
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