In 1923, German scientist Karl Schroeter added 10% - 20% Co as an adhesive into WC powder to create a new alloy, the hardness of which is just below diamond when measured. It was the first artificially synthesized cemented carbide. However, the cutter made of this kind of tungsten carbide can be brittle, sometimes the cutting edge would crack. Then, in 1929, American scientist Schwartzkopf added a mixture of carbides WC-TiC into the original formula to improve the property of cutting steel.
Tungsten carbide rotary files are essential tools for bench workers and mold producers. The rotary file can completely replace small grinding wheels with shanks and prevent dust pollution. Additionally, the service time of rotary files is one hundred times that of grinding wheels, and the price efficiency is improved by more than 5 times. The grinding surface can reach Ral. 6 when grinding metal and non-metallic material with hardness under HRC 70. The operation is simple and reliable, which can eliminate the need for manual labor, cut down supplies and minimize operating costs.
Wide application. Carbide rotary files are suitable for a number of metal processing applications for materials such as cast iron, cast steel, carbon steel, alloy steel, stainless steel, copper, aluminum, etc. Also, hard non-metallic materials such as marble, jade, and stone can be polished using carbide rotary files. The hardness of our carbide burr is HRA≥85.
Tungsten carbide rotary files are used in many different industrial production operations every day. The files have become irreplaceable steps of our production processes and many products we use in our daily lives are created thanks to rotary files.
The flute form of rotary file is constituted by a straight line and Archimedes screw. The optimal helical angle is 28° and we try to use double cut burrs so that the cut will not be too long and the operation will remain steady. Additionally, the surface of the work piece is smooth and the cutting is performed with high efficiency. The precision is guaranteed by using CNC machining equipment to process.
As science and technology continue to advance, engineering materials with high hardness and durability improve. Traditional turning techniques can hardly fulfill the machining of some of these materials. Coated tungsten carbide, ceramic, and PCBN materials are used to take advantage of high temperature hardness, wear resistance, and thermal-chemical stability. The outstanding properties of these hardmetal cutters are used to increase productivity and effectiveness when it comes to machining.