Graphite is a common non-metallic material, black in color, with high and low temperature resistance, good electrical and thermal conductivity, good lubricity and stable chemical properties, good electrical conductivity, and can be used as an electrode in EDM.
Performance Analysis of Graphite Turning
Regarding the cutting mechanism of graphite materials, the formation process of graphite chips is roughly that when the cutting edge of the tool contacts the workpiece, there is extrusion and crushing at the tip of the tool, forming small chips and small pits, and a crack is formed, which will move forward to the tip of the tool.
Processing technology
Due to the particularity of graphite, in order to achieve high-quality processing of graphite parts, corresponding technological measures must be taken to ensure. During rough machining of graphite materials, the tool can be fed directly on the workpiece, using relatively large cutting parameters; in order to avoid chipping during finishing machining, a tool with good wear resistance is often used, and the cutting amount of the tool is reduced.
Cutting tools
Graphite is a non-metallic material, so diamond tools are generally used for processing. Diamond tools have extremely high hardness and wear resistance, low friction coefficient, high elastic modulus, high thermal conductivity, low thermal expansion coefficient, and low affinity with non-ferrous metals. And other advantages, diamond tools are divided into four types of structures: natural diamond, single crystal diamond, PCD diamond and CVD diamond, among which PCD tools are mainly used for processing graphite.
