CPM Series Ring Die For Pellet Mill

The ring die is usually made of carbon structural steel, structural alloy steel, and stainless steel through forging, cutting, drilling, heat treatment, and other processes. The materials used in the ring die and each processing procedure have a direct impact on its service life, granulation quality and output. Carbon structural steel mainly consists of 45 steel, whose heat treatment hardness is generally HRC45~50, and its wear resistance and corrosion resistance are poor, which are basically eliminated; The alloy steel mainly consists of 20CrMnTi material, which is subject to surface heat treatment such as surface carburization. The treatment hardness is above HRC50 and has good comprehensive mechanical properties. The ring mold made of this material has high strength and better wear resistance than 45 steel, but its disadvantage is poor corrosion resistance. Although the cost of a single ring mold is relatively low, the production cost of tons of material is higher than that of stainless steel ring mold when it is used, and it is now phased out; The stainless steel material is mainly 4Cr13. The rigidity and toughness of these materials are good. The heat treatment is overall firing, the hardness is greater than HRC50 and has good wear resistance and corrosion resistance. The service life is long, and the cost of per ton ring mold is low.