⒈High wear resistance and impact resistance: The alloy steel liner in dual medium quenching has scientific and reasonable alloy element formula, so that the liner has good physical and chemical properties, and the service life is more than twice that of high manganese steel. Able to withstand huge impacts. The surface shape of the liner can be maintained for a long time during the work to ensure that the output of the mill can be increased by more than 5%. ⒉High strength and high toughness: In the quenching process of the liner, the special dual-medium quenching agent with good thermal stability is used as the medium to make the product achieve the combination of high strength, high hardness and high toughness to meet the wear resistance process Claim. ⒊High cost performance, strong adaptability: After advanced dual-medium quenching process, it has the characteristics of high quenching hardness and high toughness value, so that the liner has good wear resistance. Compared with the high manganese steel liner, the medium alloy The alloy steel ball mill liner in the dual-medium quenching shows an excellent cost performance. It can adapt to mine wet grinding, dry grinding, mixed grinding, etc.