Cemented carbide rotary files are widely used in the production and processing of raw materials such as pig iron, cast steel, alloy steel, carbon steel, stainless steel, hardened steel, copper and aluminum. 1. Carbide rotary burrs are indispensable for the processing of metal composite materials. In the production process of hardened steel, carbide rotary burrs are also an indispensable and irreplaceable object. 2. The processing of small grinding wheels with handles can be replaced by carbide rotary files. Such processing technology has no environmental pollution caused by smoke and dust. 3. The productivity is very high, tens of times faster than the speed of hand-made blades, and three to five times faster than the speed of processing with small grinding wheels. 4. The cemented carbide rotary file is very durable. Compared with the spring steel CNC blade, it is about ten times faster, and the wear resistance of the small grinding wheel is 50 times higher than that of the small grinding wheel. 5. Metal mold cavities of various shapes can be processed according to the cemented carbide rotary file. 6. It is widely used to remove burrs and welding of castings, steel castings and welded parts. 7. The rounding, rounding and processing of pipe grooves for various mechanical parts is also indispensable. 8. A more common application is the removal of pipelines. 9. Ability to smoothly process the impeller path. 10. High-precision machining can be carried out on the surface of internal threads of various mechanical parts.