深冷处理对硬质合金辊环材料的影响研究OA

Cemented carbide roller rings are widely used in the steel rolling industry as a key basic component.The material properties of roller rings can affect their service life to a certain extent.Cryogenic treatment is a basic treatment process for materials that can improve the mechanical properties,wear resistance,and other properties of different materials.Previous studies have shown that cryogenic treatment can improve the wear resistance,bending strength,impact toughness,and other properties of cemented carbide,its improvement effect is closely related to the treatment process and material type.This work studied the effect of cryogenic treatment on the mechanical properties and wear resistance of cemented carbide roller ring materials GR60A and GR40H.The results showed that cryogenic treatment had no significant effect on the mechanical properties of GR40H hard alloy,but could improve the bending strength of GR60A;However,the impact toughness of GR60A decreased significantly after cryogenic treatment.Microscopic analysis revealed that the uneven size and distribution of WC particles in the raw material were the main factors leading to the decrease in impact toughness.In addition,specific cryogenic treatment(-196℃)can improve the wear resistance of GR60A hard alloy.