What are the effects of insufficient mold grinding flatness?

2021-03-25 09:23:53 admin

What are the effects of insufficient mold grinding flatness?






   The surface quality of the mold working parts has a very close relationship with the mold's wear resistance, fracture resistance and adhesion resistance, which directly affects the service life of the mold, especially the surface roughness value has a great influence on the life of the mold. If the surface roughness value is too large, stress concentration will occur during work, and cracks will easily occur between the peaks and valleys, which will affect the durability of the die, and the corrosion resistance of the workpiece surface, which directly affects the service life of the die For this reason, plastic mold processing manufacturers will pay attention to the following matters:




  (1) During the processing of mold working parts, it is necessary to prevent the surface phenomenon of grinding and burn parts, and the grinding process conditions and methods (such as grinding wheel hardness, particle size, coolant, feed volume and other parameters) should be strictly controlled;




  (2) During the processing of plastic molds, it is necessary to prevent macro defects such as knife marks, interlayers, cracks, and impact scars on the surface of the mold working parts. The existence of these defects will cause stress concentration and become the root cause of fracture, resulting in early failure of the mold;




  (3) Use grinding, grinding and polishing to obtain a smaller surface roughness value and improve the service life of the mold.