Tungsten Carbide Roller Cone Bits of Spherical Teeth

Extremely hard rock drilling tungsten carbide roller cone bits using Q-shaped spherical teeth, because Q-shaped dense spherical gear tooth cloth, while Q-shaped spherical teeth protruding lower height, wheel-shaped spherical tip of the tooth tooth for Q and other non-dense approximation bus arrangement, and spherical-shaped teeth teeth Q hard rock drill more, such as the pitch of each ring are uniform, outside the ring is slightly lower, the formation stage. Wheel back and claw back teeth are inlaid P-shaped flat. WOB per centimeter diameter of the drill bit 892 kg to 1339 kg range, speed is 50 to 80 revolutions per minute, every minute. Damage in the form of carbide roller cone bits include bearing damage, cone damage, dental tooth damage, sharp dorsal tooth wear.