In the graphite processing process, the use of tool conditions directly affect the quality of processing, efficiency. A good tool has played a role in controlling the quality of the machining process. Graphite material is soft is a kind of easy to cut non-metallic materials, the general grades of materials can be used to process graphite parts, for processing some of the surface accuracy is not high, rough parts of the requirements can not be used in the price of cheaper high-speed steel cutting tools , Both to meet the processing requirements, but also reduces the cost of processing. The tool material is the fundamental factor in determining the cutting performance of the tool, and it has a great effect on the machining efficiency, the machining quality, the processing cost and the durability of the tool. The harder the tool material, the better the wear resistance, the higher the hardness, the lower the impact toughness, the more brittle the material. Hardness and toughness is a pair of contradictory body, but also the staff of the material should be a key customer service. But because the graphite material is pressed from the powder, only suitable for dry cutting, high-speed steel tool wear resistance is poor, in the processing of graphite particles on the tool wear intensified, making the tool edge blunt, so for some surface quality and Dimensional requirements of high precision graphite parts are not suitable for high-speed steel tool processing, should choose a better wear resistance of the tool or coating tool instead of poor wear resistance of high-speed steel cutting tools. Such as the use of carbide YG8 tool, high-speed steel coating TiCN tool, carbide coating tools.