High-strength diamond grinding wheel based on PCD compact and preparation method thereof

Abstract

The application relates to the technical field of diamond grinding wheel preparation, in particular to a high-strength diamond grinding wheel based on a PCD (Polycrystalline Diamond Compact) composite sheet and a preparation method thereof. The preparation method comprises the following steps: step one: mixing diamond, copper, iron, nickel, chromium vanadium and polytetrafluoroethylene, high-temperature sintering under a protective atmosphere, and grinding and finishing to obtain a diamond tool bit; step two: placing the diamond tool bit in a micron diamond plating solution for primary plating to obtain a primary electroplated diamond tool bit; placing the primary electroplated diamond tool bit in a nanometer diamond plating solution for secondary plating to obtain a secondary electroplated diamond tool bit; and step three: welding the secondary electroplated diamond tool bit and a base body into a high-strength diamond grinding wheel under the action of a soldering paste. The diamond grinding wheel prepared by plating the diamond tool bit and improving the composition of the soldering paste has improved strength.