Composite Cutters Used in Largediameter Bit for R 618 Drilling Machine

Abstract:

A new type of composite cutter bits applied to pile foundation engineering is introduced. The cutter bit possess of several distinctive features comparing with the cutter bits imported from foreign countries and the domestic copy cutter bits by engineering application of Wuhan geological survey and foundation engineering corporation in Changjiang square.

Key words:R 618 drilling machine, composite cutter bits, steel matrix, fixed bits, hardwearing,