Tungsten carbide hole saws can cut very hard materials, including hardened steel, cast iron, bricks, etc. The shaft made of carbon steel is matched with a centering drill.
The theoretical carbon content of tungsten carbide is 6.128% (atomic 50%). When the carbon content of tungsten carbide is greater than the theoretical carbon content, free carbon (WC+C) appears in the tungsten carbide. The presence of free carbon will carbonize the surrounding area during sintering. The growth of tungsten grains results in uneven grains of cemented carbide; tungsten carbide generally requires high combined carbon (≥6.07%) free carbon (≤0.05%), and total carbon is determined by the production process and scope of use of cemented carbide.
The WC total carbon used in alloys with different application ranges, different cobalt contents, and different grain sizes can be adjusted slightly. Low-cobalt alloys can choose tungsten carbide with higher total carbon, and high-cobalt alloys can choose tungsten carbide with lower total carbon. In short, the specific requirements of cemented carbide have different requirements for the particle size of tungsten carbide.
Cemented carbide materials like tungsten carbide and diamond are usually made into cutting tools, Tungsten carbide hole saws, Diamond cup grinding wheel , etc.