Cutter head tire casing for mining bit

The invention belongs to the technical field of mechanical processing, and discloses a mining bit. The mining bit consists of a cutter head and a basal body, wherein the cutter body is prepared from the following components: 100-120 parts of nickel powder, 85-90 parts of barium titanate powder, 70-75 parts of tungsten powder , 69-72 parts of silicon nitride powder, 65-68 parts of chrome carbide powder, 50-55 parts of aluminum oxide powder, 45-48 parts of chromium powder, 30-32 parts of copper powder, 25-28 parts of tungsten carbide powder, 20-22 parts of titanium carbide powder, 5-8 parts of water glass and 2-3 parts of silica gel. The invention further discloses a bit tire casing. The bit prepared from the tire casing disclosed by the invention has the advantages of better bending strength, better impact toughness and higher wearing ratio.