Cause of die loss.
1) the material of the main working parts of the mould is not properly selected.Poor material performance, no wear resistance;The mold steel is not refined, and has a lot of smelting defects;Convex and concave die, forging process is not perfect, there are heat treatment hidden trouble.
2) the design of die structure is not reasonable.The elongated and convex mold is not designed to reinforce the device, the discharging port is not free to appear in the stack, and the unloading force is subjected to the increase of the alternating load of the ambassador's convex mold.
3) the molding process is not perfect, mainly manifested in the inner quality difference of convex and concave die forging, the heat treatment technology and process have problems, resulting in convex, concave die quenching, soft spots and uneven hardness.Sometimes cracks, even cracking, grinding and polishing are not in place, the surface roughness value is too large.
4) no lubrication or lubrication but not good effect.