The stamping parts manufacturer talks to you about the three characteristics of the blanking surface-hardware

In the production of stamping parts manufacturers, the blanking surface is the main indicator of the quality of fine-blanking parts. It is related to factors such as material type, performance, metallographic structure, mold quality and cutting edge condition, lubricant and press adjustment. The structure of the blanking surface includes: smooth surface, tear surface, collapsed surface and burr surface. The quality characteristics of the expression method and meaning of the blanking surface are shown in three aspects. (1) The roughness of the blanking surface The smoothness of the blanking surface is different in the direction of the blanking and at different positions along the periphery. That is, the collapsed side is better than the burr side. The roughness of the blanking surface is expressed by the arithmetic mean aR. Its value is generally Rau003d0.2～3.6, divided into six grades, measuring direction—perpendicular to the punching direction; measuring position—in the middle of the punching surface. (2) Punching surface integrity rate Normal stamping parts will not cause damage to the punching surface due to the good characteristics of the stamping die. Only the bending and stretching parts will cause the surface of the metal material to be strained due to the pulling force of the mold. (3) The tearing degree of the punching surface. The reasonable design of the stamping die can control the above problems according to the original characteristics of the metal material. Choosing a suitable manufacturer of stamping parts is particularly important. Hardware, more than 20 Ru0026D and design engineers, can meet the customization of complex stamping parts.