The performance and durability of a PDC drill bit largely depend on the quality of the brazing between the PDC cutters and the bit body. This process requires precise temperature control and surface preparation. By using high-frequency induction brazing, PDC cutters are securely bonded to the bit matrix to ensure excellent wear resistance and cutting stability in demanding drilling applications.
Standard Process Overview:
Surface Preparation: Clean the PDC cutters and bit pockets using ultrasonic cleaning or sandblasting to remove contaminants and oxide layers.
Precise Positioning: Use specialized fixtures to precisely position the cutters, ensuring correct alignment and symmetry.
Brazing Material Application: Apply Ag-Cu-based brazing alloy and flux, ensuring a uniform and appropriate brazing gap.
Induction Brazing: High-frequency induction heating enabling low-temperature, high-strength brazing.
Controlled Cooling: Allow gradual cooling to release internal stress and prevent cracking or delamination of the cutters.
Post-Braze Inspection: Conduct visual and non-destructive testing (e.g., ultrasonic inspection) to ensure joint integrity and edge precision.
If you are interested in this process and our PDC drill bit solutions, feel free to contact us for customized solutions and expert technical support!
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