About the surface roughness of stamping parts

Metal stamping parts can be cold stamped and hot stamped according to the temperature during stamping. This depends on the material's strength, plasticity, thickness, degree of deformation and equipment capabilities, etc. At the same time, the original heat treatment state and final use conditions of the material should be considered. The stamping process can be roughly divided into two categories: separation process and forming process (also divided into bending, drawing, and forming). The separation process is to separate the stamping part and the blank along a certain contour line during the stamping process, and the quality of the separated section of the stamping part must meet certain requirements; the forming process is to make the stamping blank undergo plastic deformation without damage. And transformed into the required finished shape, but also should meet the requirements of dimensional tolerances and other aspects. The grade requirements of the dimensional accuracy of stamping parts and the grade requirements of surface roughness are the concepts in the national recommended standards. The key is to recommend these two words. Generally, they are not used in the actual stamping production process, and they have no practical significance. Generally, enterprises produce According to the requirements of our own products and actual needs, we will compile unmarked tolerance standards and requirements, or adopt national standard tolerance values u200bu200b(generally IT14 level). For other dimensions, please refer to the drawing to mark the tolerance. The surface roughness grade can be directly marked by the drawings. Usually, the surface roughness of stamping parts is not required, and the requirements are mainly reflected in the raw materials. When ordering steel plates for metal stamping parts, choose the plate with the surface structure corresponding to the surface roughness range. , Or when the surface roughness requirements of the parts are relatively strict, it may not be guaranteed by the raw materials alone, then some other processes will be added in the follow-up: polishing, electroplating, etc. Previous post: Advantages of plastic wood stainless steel buckle products