When the Tungsten Carbide Cutting Blades performs the cutting process, the workpiece can be fed along or relative to the tool rotation direction, which affects the starting and finishing characteristics of the cutting. When the tungsten steel knife performs the cis (also called the same direction), the feed direction of the workpiece is the same as the direction of rotation of the tungsten steel cutter in the cutting area. The chip thickness gradually decreases from the beginning until the end of the slit is zero when the periphery is made; when the reverse (also called reverse cutting) is performed, the feed direction of the workpiece is opposite to the direction of rotation of the cutter in the cutting area. The chip thickness begins to zero and then gradually increases as the cutting process progresses.
When the Tungsten Carbide Rotary Blade is reversed, the tungsten steel knife blade starts cutting from the zero chip thickness, which generates a high cutting force, thereby pushing the Carbide Alloy Blade and the workpiece away from each other. When the tungsten steel blade is forcibly pushed into the slit, it usually comes into contact with the hardened surface caused by the cutting blade, and friction and polishing effect under the action of friction and high temperature. Cutting forces also make it easier to lift the workpiece from the table.