METHOD OF MANUFACTURING DIAMOND CUTTING TOOLS THROUGH INSTANTANEOUS HEATING PROCESS AND COOLING PROCESS AND SUCH A DIAMOND CUTTING TOOL

摘要

A method of manufacturing diamond cutting tools (10) through an instantaneous heating process and a quick cooling process and a diamond cutting tool manufactured by the method is disclosed. The method heats a blank (1) and shank (3) through the instantaneous heating process wherein a temperature instantaneously rises at a rate of 500 - 1000 °C/min. Thereafter, the blank and the shank are left at a temperature of 700 - 1200 °C for a short period of time, thus being cooled and integrated into a desired cutting tool. The method of this invention uses a light heating process, using a halogen lamp (5) as the instantaneous heating process. In the method, a welding chamber (6) for blanks is designed to be controlled in both pressure and atmosphere so as to accomplish a desired degree of vacuum, thus accomplishing a desired atmosphere capable of preventing a thermal deterioration of a diamond blank, a welding metal or a shank material.