Comparison with amorphous diamond CVD diamond grinding wheel

( 1 ) the difference between the amorphous diamond CVD diamond grinding wheel
   Amorphous diamond ( also called diamond-like carbon - Annotation ) is to adopt a carbon PVD coating deposition process . It has part of the diamond , but also has a part of SP2 carbon bond ; its high film hardness, but lower than the hardness of diamond films ; their  concrete polishing pads thickness than we usually deposited diamond film to be thinner . When machining graphite, amorphous diamond grinding tool life is 2-3 times uncoated carbide tools . Consistent contrast , CVD diamond deposition process is the use of pure CVD diamond wheel , tool life when machining graphite is 12-20 times carbide cutting tools , which can reduce the number of tool changes  diamond polishing tools to improve the reliability and precision machining sex .
( 2 ) diamond wheel life varies
  Like any other tool , diamond grinding tool life also varies , depending on the material to be cut , the choice of feed rate and cutting speed , as well as the geometry of the workpiece and the like. In general , processing of graphite diamond wheel tool life is 10-20 times uncoated carbide tools and may even longer in some cases . Thus , a tool can be done with almost any processing tasks without tool change due to tool wear and concrete ring saw  avoid the processing of the interrupt and recalibration , making it possible to achieve unattended processing. In the processing of composite materials , it is entirely possible to get a longer tool life. When it was reported in the processing of high-density glass fiber, carbon fiber composite materials difficult to machine , diamond grinding tool life up to 70 times is not coated carbide tools .