Hollow bit material and classification

Hollow drill material can be divided into hard alloy steel, high-speed steel, powder metallurgy, tungsten steel drill class, general use most is cemented carbide on the market, and high speed steel is commonly used type, hard alloy hollow drill its advantages of wear-resisting durable, not easy to crash when playing a hard material, type and high speed steel is very sharp, drilling is faster, but more brittle, easily broken when playing a hard material.

Hollow bit classification

In addition to the traditional twist drill in the market, there are specialized for magnetic seat drill coring drill (also called hollow drill), this kind of drill adopts the principle of Milling Cutter, with high efficiency, good precision effect.

General customers are choosing hollow bits (coring bits), specifications are: Ø 12-160 - mm. Only small holes must be made with a twist bit.

Hollow drill types generally have HSS drill, carbide drill, tungsten steel drill. HSS drill is a tool used to drill round holes of workpiece by rotary cutting with its relative fixed axis. Because of its capacity chip groove into spiral shape and shape like hemp and named. Spiral grooves have 2, 3 or more grooves, but 2 grooves are the most common.

HSS Drill Bits can be clamped on manual or electric hand-held drilling tools or on drilling machines, milling machines, lathes and even machining centers. HSS twist drill is made of HSS.

Carbide bits are suitable for use in advanced machining centers. The bits are manufactured from fine grained carbide and TiAlN coated for extended service life. The specially designed geometric edge enables self-centering, providing excellent chip control and removal when drilling most workpiece materials. The self-centering function and tightly controlled manufacturing accuracy of the bit ensure the quality of drilling holes, eliminating the need for further finishing after drilling.

Tungsten steel drill is a tool used to drill round holes of workpiece by rotating cutting its relative fixed axis. Because of its capacity chip groove into spiral shape and shape like hemp and named. Spiral grooves have 2, 3 or more grooves, but 2 grooves are the most common. Tungsten steel drill bits for twist drill can be clamped in manual, electric hand-held drilling tools or drilling machines, milling machines, lathes and processing centers. Tungsten steel drill material is tungsten steel, processing hardness is higher, but compared with high-speed steel is more brittle, not easy to fracture when used.