An impregnated core bit is a type of diamond drill bit where synthetic or natural diamonds are uniformly distributed throughout a metal matrix, typically composed of tungsten carbide or other hard materials. This design ensures continuous cutting action as the matrix wears down, exposing fresh, sharp diamonds to maintain performance over time. HQ refers to a standard core size in the...

A raised front profile (also called a crown protrusion, front-end relief, or pre-set height) is a deliberate design feature at the leading edge of an impregnated diamond bit. It is added for several engineering reasons related to performance, wear, and drilling efficiency.   1. Faster Initial Penetration The front protrusion helps the bit cut into the formation sooner. When the bit is...