PDC Dome Cutter
PDC cutter, or PDC button, is a high-efficiency cutting element commonly used in oil and gas, mining, water well drilling, and geological exploration.
More Robust, Longer service
The PDC dome cutter shares the same layered structure as the flat cutter, consisting of an upper polycrystalline diamond table and a WC-Co (tungsten carbide-cobalt) substrate. The key difference lies in the shape of the diamond layer, which fundamentally changes its cutting mechanism. Unlike the shearing action of a flat cutter, a dome cutter operates primarily through chiseling. This design results in a smaller contact area and more effective stress distribution, reducing the risk of chipping and improving durability and impact resistance—particularly in soft to medium formations.
product advantage
Built for Rough Conditions and High Impact
The exceptional shearing efficiency of PDC cutters comes from their hardness and abrasion resistance. However, this extreme hardness also leads to impact vulnerability — an unavoidable
challenge in most drilling operations.To overcome this, a PDC layer is combined with a tungsten carbide substrate, significantly improving impact resistance. Yet, to further unlock the
full potential of PDC cutters — broadening their application range and reducing costs in both time and resources — continued material and structural improvements are essential.
Diamond layer optimization
The diamond layer makes direct contact with the formation, and its quality largely determines the lifespan of the drill bit. We focus on producing cutters with high impact resistance—without compromising abrasion performance.
Special interface design
The interface between the PCD layer and tungsten carbide substrate is the most critical zone in a PDC cutter. It must balance mechanical strength and thermal resistance, while surviving extreme drilling conditions. WE engineering the interface properly to avoiding delamination and improving cutter life.
Advanced manufacturing
Diamond synthesis requires a complex balance of time, pressure, and temperature. We are an experienced manufacturer of synthetic diamonds, equipped with cubic press machines that give us full control over the production process. This allows us to make swift adjustments to meet our clients’ specific requirements.
Cobalt leaching
Thermal damage is one of the most common issues in PDC cutters. It can result not only from poor thermal management but also from the mismatch in the coefficient of thermal expansion (CTE) between carbon and cobalt. One effective solution is cobalt leaching, which helps relieve internal stress caused by this difference. Varying the depth of cobalt leaching results in different types of cutter products, each optimized for specific applications.
model | diameter (mm) | height (mm) | diamond thickness |
|---|---|---|---|
1318 | 13.13 | 18 | 1.5-2.5 |
1420 | 14.13 | 20 | 1.5-2.5 |
1422 | 14.13 | 22 | 1.5-2.5 |
1623 | 16.13 | 23 | 1.5-2.5 |
1624 | 16.13 | 24 | 1.5-2.5 |
1826 | 18.13 | 26 | 1.5-2.5 |
1926 | 19.13 | 26 | 1.5-2.5 |
2028 | 20.13 | 28 | 1.5-2.5 |
*The diameter tolerance is ± 0.05mm.
*The height tolerance is ± 0.1mm.
*The diamond thickness tolerance is ± 0.1mm.
CUSTOMIZATION
We understand that standard products may not always meet the diverse and unpredictable challenges faced in the field. That’s why we’re glad to offer customized solutions tailored to your specific needs.
Get in touch with us— we’ll work with you to develop the ideal solution.