1/6 Rock drilling tools 11 degree taper button drill bit 38mm
1 Product description of Rock Drilling Bits
Button cemented carbide is widely used as an excavating tool in
quarrying, mining, and tunnel excavation. In addition, it is also
used as a drill bit accessory for hydraulic rock drills or deep hole drill tool
accessories. Among them, it is button carbide drill bit which most
widely used for rock drilling matched for hydraulic rock drills.
Tooth profile of used in the button cemented carbide drill bit are
divided into four shapes: hemispherical teeth, conical teeth,
parabolic teeth, and wedge teeth.
1. Under the condition of sufficient impact power of hydraulic rock
drill, the hemispherical teeth have high energy utilization rate,
good rock breaking effect, and the alloy teeth are strong and
wear-resistant, which is more suitable for oil well drilling.
Hemispherical teeth are used to inlay rock drilling percussion
bits, down-the-hole drill bits and oil drilling bits, suitable for
very hard rock formations.
2. The alloy ball tooth of conical tooth shape is easy to drill
into the rock, the drilling speed is higher. Conical teeth work
more effectively when the impact energy is insufficient (the wind
pressure of the wind power rock drill is insufficient, the
performance of the hydraulic rock drill changes, etc.), but the
abrasion resistance is poor. The teeth used to inlay rock drilling
percussion bits, down-the-hole drill bits and oil drilling bits,
suitable for hard rock formations.
3. Parabolic button is a crown shape between conical and
hemispherical teeth. It is mainly used to inlay down-the-hole drill
bits and roller cone bits, and is suitable for medium-hard rock
formations.
4. Wedge-shaped button is mainly used to inlay special-shaped DTH
drill bits and roller cone bits, and is suitable for soft rock
formations with high speed and low tooth breakage.
