Tungsten steel (tungsten carbide) has a series of excellent properties such as high hardness, wear resistance, good strength and toughness, heat resistance, corrosion resistance, etc., hanging grinder, used in electric grinder carbide rotary file, tungsten steel is generally used The grinding head is perforated. There are many types of hand electric drills: ceramic grinding head carbide rotary file, rubber grinding head carbide rotary file, diamond grinding head. Carbide rotary burrs such as emery cloth grinding heads. Grinding heads are a general term for small-sized shank grinding tools. Carbide rotary burs, especially its high hardness and wear resistance, are basically not maintained even at a temperature of 500 ℃. Hardened alloy rotary file. It still has a high hardness at 1000°C.