Hardware parts size accuracy and surface quality

Hardware parts size accuracy is refers to the metal stamping parts actual size and basic size difference, the difference is small, the metal stamping parts size accuracy is higher. The stamping size error caused by the main factors are: convex, concave die manufacturing precision; Convex, concave die clearance; After pressing the elasticity of the material reply; In the process of production of causal factors, such as location, not the material properties such as unstable.

Hardware parts size accuracy can generally be divided into two types of precision level and average level. Precision stamping process technology level is the degree of accuracy, and is in a relatively economic construction can be the accuracy of the means to achieve. When the mould manufacturing high accuracy, stamping shape dimension accuracy of ITl0 level, in the hole size can achieve IT9 level.

Hardware parts surface quality shall not be higher than the surface quality of the raw materials, or need to increase the follow-up process to achieve, increase the cost of production.