How to Control Brazing Temperature of PCD Cutting Tools The brazing temperature should not exceed 720°C.
Higher temperature may cause diamond layer graphitization.
Graphitization leads to thermal damage and tool failure.
It also lowers the tool's surface quality and lifespan.
Use low-temperature Ag-based solder when brazing PCD tools.
Melting range is about 680 to 705°C.
Working temperature is around 690°C.
Shear strength reaches 250 to 300 MPa.
Proper brazing ensures stable performance and longer life.
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Polycrystalline Diamond or PCD cutting tools are advanced manufacturing tools that combine a diamond layer with a carbide substrate. The diamond layer provides exceptional hardness and wear resistance, making these tools ideal for precision cutting applications. However, the brazing process that joins these components requires extremely careful temperature control to preserve the unique properties of the diamond structure.