CEMENTED CARBIDE TOOL HAVING A SMALL CONTENT OF BINDER PHASE AND A FINE GRAIN SIZE OF TUNGSTEN CARBIDE AND A MANUFACTURING METHOD THEREOF

摘要

PURPOSE: A cemented carbide tool and a manufacturing method thereof are provided to obtain a cemented carbide body with a small grain size and a small content of cobalt from a mixture of tungsten carbide and binder phase.;CONSTITUTION: A cemented carbide tool comprises a hard component of Co and/or Ni binder phase. The cemented carbide tool has a surface region and an inner region where the grain size of the surface region is smaller than that of the inner region and the binder content of the surface region is lower than that of the inner region.;COPYRIGHT KIPO 2012