Tungsten carbide drill bits are made to be used on modern machining centers. These drill bits are manufactured with fine-grain carbide and titanium aluminum nitride (TiAlN) coatings to provide long tool life. As self-centering drills, they have a specially designed edge that helps to control chips and chip evacuation in most workpiece materials. The self-centering geometry and fine tolerances of solid-carbide drills ensure quality holes without additional machining. Tungsten carbide drills that have exchangeable tungsten carbide tips incorporate a steel body with the exchangeable tips that are known as crowns.
These tools offer the precision of brazed drills, and offer increased productivity at reduced operating costs. The carbide crowns used with this new generation of drilling tools are available in precise size increments and have a self-centering geometry to produce close diameter tolerances.