What is the Dimensional Accuracy of Metal Stamping Parts?

Metal stamping parts are widely used in various fields in our lives, including some electronic devices,auto parts,decorative materials and so on.Rockwell hardness tester is used for hardness testing of metal stamping. Small, stamped parts with complex shapes can be used to test small planes and cannot be tested on ordinary desktop Rockwell hardness testers. The following small series will introduce what is the dimensional accuracy of the metal stamping parts ?

The dimensional accuracy of the metal stamping parts refers to the difference between the actual size of the stamping parts and the basic size. The smaller the difference, the higher the dimensional accuracy of the metal stamping parts. The main factors that cause the dimensional error of metal stamping parts are: the manufacturing accuracy of the convex and concave molds; the gap between the convex and concave molds; the elastic recovery of the material after stamping; accidental factors in the production process, such as inaccurate positioning and unstable material performance.

The surface quality of the metal stamping parts should not be higher than the surface quality of the raw materials, otherwise it needs to be increased by subsequent processing to increase the production cost.

The dimensional accuracy of metal stamping parts can be generally divided into two types: precision grade and ordinary grade. The precision grade is the precision that can be achieved in the stamping process technology, while the ordinary grade is the precision that can be achieved by more economical means. When the mold manufacturing precision is high, the shape dimension accuracy of metal stamping parts can reach IT10 level, and the inner hole size can reach IT9 level.