IMPACT-RESISTANT CEMENTED CARBIDE HEXAHEDRAL ANVIL AND PREPARATION METHOD AND USE THEREOF

The present invention puts forward an impact-resistant cemented carbide hexahedral anvil and preparation method and use thereof. The cemented carbide hexahedral anvil comprises an upper matrix material and a lower matrix material containing ductile particles; wherein the upper matrix material forms an upper part of the hexahedral anvil, and the lower matrix material containing ductile particles forms a lower part of the hexahedral anvil. In the upper matrix material, a cobalt content is of 6-10 wt%, a total content of inhibitor Cr3C2 and VC is of 0.2-0.5 wt%, and a tungsten carbide content is of a balance amount, the tungsten carbide having a grain size of 0.6-1.2 μm. In the ductile particles, a cobalt content is of 8-15 wt%, a total content of inhibitor Cr3C2 and VC is of 0.2-0.5 wt%, and a tungsten carbide content is of a balance amount, the tungsten carbide having a grain size of 0.6-2.0 μm; and a fracture toughness of the ductile particles is higher than a fracture toughness of the upper matrix material by 1-10 MPa*m½. The impact-resistant cemented carbide hexahedral anvil of the present invention is added with the ductile particles, which have a lower hardness and a higher toughness as compared to the upper matrix material, so as to improve the impact resistance of the anvil and effectively reduce anvil consumption during blasting.