Alloy bit generally refers to carbide bit, split integral, welded, indexable blade type and interchangeable head type.

The main components of cemented carbide are tungsten carbide, cobalt, etc., and the hardness is generally higher than HRC90 degrees, which is more suitable for batch processing and difficult hard processing.

Solid alloy bit

Now the alloy drill bits on the market are generally tungsten steel overall drill bits, although the material is the same, but due to the processing process, the product quality of each brand is very different. Imported and domestic alloy drill bits are also very different.

Imported alloy bits generally use VHM microcrystalline hard alloy (ISO K40), ultrafine particle type (0.6µ m) Ideal combination of hardness and toughness in high performance drill bits and common milling machine applications.

The surface of high-quality alloy bits is coated, such as aluminum chromium nitride (AlCrN) coating, which is a single layer coating with a thickness of 4μm, microhardness of 3200HV, coefficient of friction of 0.35, and thermal stability of 1100 degrees Celsius. The color of the bit after coating is blue-gray.

The coated alloy bit can process low alloy steel and high strength steel. High hard steel up to 54HRC.

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