High-Precision PDC Drill Bit for Diamond Core Applications

No. The product is made from 99.9% high-purity, low-ash graphite, which is chemically stable and does not react with metal powders or diamond raw materials at high temperatures. Combined with its natural self-lubricating properties, demolding is smooth, with no sticking, no scarring, and no impurity adhesion, ensuring the appearance and quality of the finished cutting tips.

This mold features a dense structure and excellent resistance to oxidation and thermal shock. Under standard atmospheric sintering conditions, it can be reused 30-40 times; its service life can be further extended in a vacuum sintering environment, significantly reducing consumable replacement costs compared to ordinary graphite molds.

We support full-range customization. Based on the customer's cutting head length, thickness, and specifications, we can customize the overall mold dimensions, number of cavities, arrangement (three rows-top, middle, and bottom-or double-layer arrangement), and special-shaped structures. We can also machine the mold precisely according to drawings or samples.

The mold's base material has uniform electrical resistivity and balanced thermal and electrical conductivity, ensuring consistent temperatures throughout the sintering process. This eliminates issues such as uneven hardness in the cutting heads and porous formation. Additionally, the ultra-low coefficient of thermal expansion ensures no deformation at high temperatures. Combined with precision CNC machining processes, this precisely locks in the cutting head dimensions, resulting in exceptional

We recommend replacing the mold when the following signs appear: 1. Sintered cutting heads are out of tolerance (larger or smaller than specified), indicating that the mold cavity has worn out; 2. Visible pits or deposits appear on the cutting head surface, indicating that the mold's working surface has been damaged or oxidized; 3. Abnormal fluctuations in the sintering current or temperature curve, which may indicate a change in the mold's electrical resistance. Regularly inspecting the mold's