Carbide drill bit is a kind of equipment used in drilling engineering.

The cemented  carbide drill bit breaks the rock by the impact load generated by the weight on bit and its own rotation. In rock drilling, the drill bit is subjected to high-frequency impact loads, and is subjected to multiple composite stresses such as torsion, bending, tension, and compression. It is subjected to work such as rock, rock powder and mineral water in the environment of high-speed rotation and collision. Wear and corrosion of the medium.

The cone bits used at home and abroad are mostly tri-cone bits. The characteristics of this drill bit are: the axial pressure and impact load are distributed in a large and uniform range, and the effective space can be fully utilized, and the drilling is stable. The size and shape of the cemented carbide teeth for roller cone bits must be suitable for the characteristics of the rock, requiring good wear resistance, high strength, and not easy to chip and break. The cemented carbide teeth used in roller cone bits mainly include: spherical teeth, conical spherical teeth, wedge teeth, edge wedge teeth and flat top teeth for the wheel back and claw tips.

Generally, roller cone bits for drilling into extremely hard rock layers mainly use spherical teeth, with a weight of bit of 892~1339MPa and a rotation speed of 50~80r/min; cone bits for drilling into hard and medium-hard rock formations use conical buttons. The pressure is 714~1071MPa, and the speed is 60~100r/min; the cone bit for drilling into soft and medium-soft rock formations uses wedge teeth or side wedge teeth, the weight on bit is 535~803MPa, and the speed is 80~120r/min.

Cemented carbide drill bits are divided into four basic types: solid carbide drill bits, cemented carbide indexable insert drills,

Welded hard alloy drill bits and replaceable hard alloy crown drill bits. Each drill bit has benefits that are suitable for specific processing conditions.