Vacuum Brazing of PDC Bearing Matrix & Diamond Composite Sheet for the Oil & Gas Industry

Polycrystalline Diamond Compact (PDC) components are considered the backbone of modern oil and gas drilling tools. Their durability depends on how effectively the diamond layer is bonded to a metallic substrate, typically tungsten carbide. Conventional bonding techniques often lead to microcracks, weak adhesion, or thermal degradation — compromising tool life.

Normantherm addresses this challenge through precision-controlled vacuum brazing technology. Our vacuum brazing furnaces provide:

• Oxygen-free atmosphere to prevent diamond graphitization
• Uniform temperature distribution ensuring consistent bonding across the entire interface
• High-energy wetting of braze alloy, allowing deep penetration between diamond particles
• Crack-free metallurgical joints with superior impact strength

Reliability in Extreme Drilling Conditions

The resulting PDC bearing/diamond composite is capable of withstanding high rotational friction, abrasive rock formations, and temperatures exceeding 700°C— making it ideal for:

• Drill bits
• Directional drilling tools
• Stabilizers and reamers

With Normantherm’s vacuum brazing systems, oilfield equipment manufacturers gain longer tool life, higher drilling efficiency, and reduced maintenance downtime.