(1) The problem of the material of the main working parts of the resin long life grinding wheel is improperly selected. Poor material performance, not wear-resistant; mold steel has not been refined, has a large number of smelting defects; convex and concave mold, forging blank forging process is not perfect, there are hidden dangers of heat treatment.
(2) The problem of structural design of the long life grinding wheel, the die structure is unreasonable. The slender punch has no design reinforcement device, and the discharge port is not well stocked, and the unloading force is too large to cause the punch to withstand the alternating load.
(3) The manufacturing process of the long life grinding wheel is not perfect, mainly in the poor quality of the convex and concave die forging blank, the heat treatment technology, and the process have problems, causing the convex and concave die to be impervious, and the soft point and the hardness are uneven. Sometimes microcracks or even cracks occur, the polishing is not in place, and the surface roughness value is too large.
(4) The long life grinding wheel is not lubricated or lubricated but has a poor effect.
