High temperature brazing of diamond tools

1 INTRODUCTIONThe demand for superhard and precisionmachining and grinding tools has been increasedbecause of strict control of machining tolerancesfor advanced and superalloy componentsin additionto their application in cutting and grinding ofstones ,concrete structures or composite materials .Previous work1 5]has reported the developmentand applications of these tools ,alloys and compos-ites which can be suitable for machining,joining ofdissi milar materials ,and in other fields . Diamo…

High temperature brazing of diamond tools

A new brazing technique of diamond was developed. Using this new technique optimum chemical and metallurgical bonding between the diamond grits and the carbon steel can be achieved without any thermal damages to diamond grits. The results of microanalysis and X-ray diffraction analysis reveal that a carbide layer exists between the diamond and the matrix, which consists of Cr3C2, Cr7C3 and Cr23C6. Performance tests show that the brazed diamond core-drill has excellent machining performance. In comparison with traditional electroplated diamond core-drill, the brazed diamond core-drill manufactured using the new developed technique has much higher machining efficiency and much longer operating life.