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Alloy Drill Material
- Jan 09, 2018 -

Carbide is the main component of tungsten carbide, cobalt, etc., the hardness is generally higher than HRC90 degrees, in the case of bulk processing and hard processing more applicable.

Alloy drill bits on the market are generally tungsten steel overall bit, although the same material, but due to the processing technology, the quality of the various products vary widely. Imports and domestic alloy drill is also very different.

The imported alloy drills are typically made of VHM micro-grain hard alloy (ISO K40) and the ultrafine particle type (0.6 μm) combines hardness and toughness in high performance drill and plain milling machines.

High-quality alloy drill bit surface will take the coating treatment, such as aluminum nitride chromium (AlCrN) coating, the coating is a single layer coating, the thickness of 4μm, microhardness of 3200HV, 0.35 friction coefficient of thermal stability up to 1100 Celsius. Drill color yellow-blue-gray after coating.

After coating alloy drill can process low alloy steel, high strength steel. High hard steel up to 54HRC.