Patent ID: 8841005

Claim:
A cutting insert for metal working comprising: a first cutting portion comprising a cemented carbide including a binder in which are dispersed hard particles of at least one of titanium carbide, chromium carbide, vanadium carbide, zirconium carbide, hafnium carbide, tantalum carbide, molybdenum carbide, niobium carbide, and tungsten carbide; a second cutting portion comprising a cemented carbide including a binder in which are dispersed hard particles of at least one of titanium carbide, chromium carbide, vanadium carbide, zirconium carbide, hafnium carbide, tantalum carbide, molybdenum carbide, niobium carbide, and tungsten carbide; a first heat sink region contacting the first cutting portion, and a second heat sink region contacting the second cutting portion; wherein the first heat sink region comprises a heat sink material having a thermal conductivity greater than a thermal conductivity of the first cutting portion and is adapted to conduct heat from the first cutting portion; and wherein the second heat sink region comprises a heat sink material having a thermal conductivity greater than a thermal conductivity of the second cutting portion and is adapted to conduct heat from the second cutting portion; and wherein the cutting insert is an indexable cutting insert.