The tungsten carbide basis which is superior in abrasion resistance and defect resistance cemented carbide make tool component

摘要

PURPOSE:To provide a tool member having superior wear resistance and breaking resistance by constituting a tool member made of sintered hard alloy of specific amounts of Co, tungsten carbide, etc., regulating the surface so that a specific waveform appears at the surface by X-ray diffraction, and further forming a hard surface layer having a specific layer thickness and also having high dispersed-phase concentration. CONSTITUTION:A tool member made of tungsten carbide-base sintered hard alloy has a composition consisting of 1-25% Co, 0.5-30% of one or more kinds among two or more kinds of multiple carbide solid solutions of the carbides of the group VIa, Va, and VIa metals except W which contain tungsten carbide, and the balance tungsten carbide. The above tool member is formed so that a waveform in which the ratio between two peak heights, L/l, in the (211) plane of tungsten carbide is regulated to =35 is allowed to appear by X-ray diffraction applied to the surface. Further, a hard surface layer having 0.5-10mum average layer thickness and increased in dispersed phase concentration is formed on the surface part. By this method, cutting tool members and wear resistant tool members excellent in properties can be provided.