Composite tool.

摘要

A composite tool comprising an insert (1) of a hard material such as composite diamond or BN compacts and a support (2) of a hard metal or alloy such as steel or cemented carbide, preferably having a larger volume than the insert (1), the insert and support (2) being bonded by friction welding through a joint layer (3) of a high strength metal or alloy such as Co or Ni with a thickness preferably of at most 1 mm.