METHOD OF MANUFACTURING BIMETALLIC CUTTING TOOL Russian patent published in 1997 - IPC

FIELD: mechanical engineering. SUBSTANCE: method comprises removing oxides from the surface of the hard-alloy plate, placing the plate in a ceramic casting mould, heating it together with the plate in reducing environment, filling the ceramic mould with melt, affecting them mechanically during crystallization, and cooling and removing a casting. The ceramic mould is heated in reducing environment during 1-1.5 hours at a temperature of 800- 900°C. After that the mould is cooled up to a room temperature is moulded it into a container and heated together with the container up to 400-500°C. The filling and crystallization is carried out under a pressure of 0.3-0.5 MPa. EFFECT: simplified method. 1 tbl, 1 dwg