drill bits for hardened steel

Carbide bits are divided into four types of foundation: solid carbide bits, carbide indexable blade bits,

Welded carbide bits and convertible carbide crown bits. Each bit has the benefit of being suited to a particular machining premise.

(1) Solid carbide drill bit

(2) Carbide indexable blade drill

The drill with indexable carbide inserts can process a wide range of aperture sizes, and the processing depth ranges from 2D to 5D (D is the aperture), which can be used in lathes and other torsional machining machines.

(3) Welded carbide drill bit

The welded carbide bit is made by smoothly welding a carbide crown to a steel drill body. This kind of drill uses self-centering geometric edge type, cutting force is small, for most of the workpiece materials can achieve excellent chip control, machining the hole profile smooth degree is good.

Dimensional accuracy and positioning accuracy are very high, no need for subsequent finishing. The bit adopts internal cooling system and can be used in machining centers, CNC lathes or other high rigidity, high speed machine tools.

(4) Carbide crown bit can be changed

Convertible carbide crown bit is a new generation of drilling tools. It is composed of a steel drill body and a removable solid carbide crown. Compared with the welded carbide bit, its machining accuracy is 82.5 jin.