AL2O3-TiC ceramics sintered body for cutting tool

摘要

The present invention relates to Co, Ni, Mo₂C and RTI ID = 0.0 WC /RTI ₂O₃-TiC-based ceramic sintered body.;Conventional cutting tool Al₂O₃-TiC ceramics sintered body can not easily be broken if the machining parameters such as the machine vibration during the machining of the machined object, the hardness change of the machined object, and the foreign substance such as sand on the surface of the machined object are generated, And the like.;SUMMARY OF THE INVENTION [₂O₃50 to 70% by weight of TiC, 20 to 35% by weight of TiC, 0.5 to 3% by weight of Co, 2.5 to 7% by weight of Ni,₂0.5 to 7% by weight of C and 0.5 to 5% by weight of WC are added and then sintered.₂O₃-TiC-based ceramic sintered body is improved in thermal shock resistance and toughness by adding a metal bonding material. Cubic carbide is added to overcome the low temperature deterioration phenomenon. The cutting length is increased when the workpiece is cut by cutting tool, The side wear amount of the workpiece is reduced.