- Graphite is polycrystalline and, unlike metal, it is ground away in the form of powder in front of the flute during processing. Graphite processing does not produce high temperatures.
- To avoid debris spalling on the edge and end of the workpiece and to avoid internal cracks, it is advisable to use high-quality, fine-grained graphite materials.
- The form of graphite powder friction destroys the graphite processing tool. Therefore, the tool should be made of wear-resistant solid materials like diamond.
- The cutting speed of graphite does not affect the tool’s life because it does not produce high temperatures.
- Increasing the feed and cutting depth can extend tool life. However, the cutting depth should not exceed 1/3 of the end mill’s diameter to minimize edge breakage when cutting to the exit.
- The life of a CVD tool depends on the cutting-edge quality and the thickness of the diamond coating.
- The maintenance method of CVD tools is the same as that of cemented carbide. To avoid measuring tools and other complex objects from contacting the cutting edge, use a soft cushion, such as plastic or paper, to find the tool’s edge. Store knives in their original packaging.
- Vacuum cleaner wind speed setting: processing area >150 m/min; Dust discharge outlet >600 m/min.
