Tungsten Carbide Hollow Drill Comparison

Besides, hollow drills also use high-speed steel and tool steel. Although high-speed steel and tool steel is more sharp and high drilling efficiency, but it is easy to brittle fracture when drilling high hardness materials. And at this point carbide has better strength and wear and corrosion resistance, not prone to chipping in some of the harder material when drilling in environmental corrosive liquid can be ensured under the drilling work stably performed. Tungsten carbide hollow drill blade portion generally use a combination of three blade structure, ranging from pitch division, there are some special combination of edge structures using a plurality of outer edges of the blades and the inner edge components. Each blade in the cutting process, the work load is only about 1/3, and with the inside of each blade are also cutting, making very smooth chip evacuations.

In addition, since each edge can endure parts of cutting work, its drill holes extremely difficult to be broken. Tungsten carbide hollow drill can drill 50mm in thickness of steel plate at high-speed with high-precision and drilling can be overlapped. With a dedicated core drill machine is also capable of multi-directional drilling, cutting light, high efficiency, bit life long, relatively low cost, suitable for all types of drilling, milling machines, lathes and so on.

Here are some notes on tungsten carbide hollow drills:
1. Before the start of the drilling must ensure that the tool is fully seated, no loose or clamping;
2. It must be ensure that when using the magnetic base drilling rig drilling rig at no iron magnet, suction surface smooth, no machine or swing adsorption phenomena completely;
3. The whole process start drilling until the completion of the drilling should be kept cooled sufficiently, the best use of the cooling conditions, inadequate cooling can lead to damage of the tool.
4. Drilling should start slow and steady feed, cut into the 1-2mm can speed up the feed rate. When appropriate to slow down the knife cutting speed, the cutting process intermediate feed should be kept stable;
5. Tungsten carbide is a kind of materials with high hardness, and it is supposed to prevent the shock.

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