The Convex Face DTH Drill Bit is engineered for superior performance in medium to hard rock formations. Featuring a slightly domed (convex) face profile, this bit design ensures excellent hole straightness, fast penetration rates, and balanced wear. Optimized air flushing channels efficiently clear rock cuttings, reduce regrinding, and enhance bit life.Each bit is precision-machined to match the corresponding DTH hammer shank, providing a secure fit and maximum energy transfer from the hammer to the bit.
Design:
- Convex Face Profile: Improves hole alignment and stability while reducing deviation in hard rock drilling.
- Optimized Button Layout: Tungsten carbide buttons are strategically placedcenter buttons for rock breaking, gauge buttons for maintaining hole diameter, and intermediate buttons for balanced cutting.
- Efficient Flushing System: Multiple air holes ensure superior cleaning of the hole bottom and cooling of the bit face.
- High-Strength Shank Connection: Precisely engineered to fit popular hammer models (QL, DHD, COP, SD, Mission, etc.) for maximum energy efficiency.
- Surface-Hardened Body: Heat-treated alloy steel provides exceptional toughness, fatigue resistance, and extended service life.
Applications:Designed for medium to hard rock formations, Convex Face DTH Bits are ideal for:
- Mining and quarrying operations
- Water well and geothermal drilling
- Construction and foundation works
- Blast hole and exploration drilling
Materials:
- Bit Body: Premium alloy steel (e.g., 4140/4340) – High strength, impact resistance, heat-treated for hardness (HRC 3545)
- Carbide Inserts: Tungsten carbide (WC-Co) – Exceptional wear resistance and durability under impact
- Surface Treatment: Nitrided or carburized finish – Enhanced hardness and fatigue resistance
- Protective Coating: Black oxide or anti-corrosion coating – Rust protection and improved longevity
