... cutters/diamond compact/PDC1PDC for geology exploring and mining field bits seriesAbrasiveness 1:300,000. Impact ... ,1908,1910,1913,1916PDC for geology exploring and mining field bits 1004,1204,1304,1308,1504 ... degree. 2. Use a new type of tungsten carbide that different from S-RTC cutters, which ... sintering. 6. Amended the sintering processing, and improved the bonding strength of the diamond-diamond ...