Manufacturing method and a cutting tool of cutting chips and cutting chip for a cutting tool

摘要

Relates to a cutting tool used to cut or punched, the workpiece is stone, brick, concrete, brittle, such as asphalt, the present invention, a cutting tool for cutting to have a long cutting life and cutting performance with excellent to provide a cutting tool and manufacturing method thereof, and chip. In the cutting chip containing a binder and abrasive binder consists of iron base, the present invention, the volume fraction of certain pores and / or (pore) and a second phase having a predetermined size in the iron matrix in It is included in the second phase above as its gist the cutting tool and manufacturing method thereof, and cutting tip of one or two or more selected from among the ceramics and non-metallic inclusions. In accordance with the present invention, it is possible to provide far cheaper cutting tip having a long life cutting resistance.