What Is the Best End Mill for Graphite?
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What Is the Best End Mill for Graphite?
As an EDM electrode material, graphite has been widely used in the mold processing industry due to its high machinability, light weight, fast forming, extremely low expansion rate, low loss, and easy trimming. It has become inevitable to replace copper electrodes. What is the most suitable end mill for graphite electrode in mold processing? Choosing the right tool will bring huge benefits to the quality, repeatability and overall success of a job.
Characteristics of graphite materials
- Graphite has high hardness
- Cutting in the form of dust, unable to take away the cutting heat
- Powdered graphite particles are used as an abrasive to grind the cutting edge of the tool, resulting in extremely accelerated cutting edge wear
We recommend diamond coated end mills for graphite.
Here is the reasons why we recommend diamond coating end mills.
| Factors | DIAMOND | PCD | DLC |
| Line Speed | ++++ | ++++ | +++ |
| Lifespan | ++++ | ++++ | ++ |
| Applicability | ++++ | ++ | ++++ |
- Diamond coating can enhance the surface hardness of the tool, improve the wear resistance, and fully ensure the machining accuracy of the parts. They offer up to 10 times more tool life than milling cutters with conventional coatings. These end mills significantly increase productivity and lower tooling costs by requiring fewer tool changes and being able to produce precision parts at high feed rates.
- Cutting speed can be increased exponentially, making graphite cutting efficiency increase.
- The service life of the tool is doubled, the number of tool changes is reduced, and the manufacturing cost is greatly reduced.
Actually, not only the diamond coating end mills could process graphite, it also could machine non-metallic hard and brittle materials such as graphite, high wear resistance materials, composite materials, high silicon aluminum alloy and other tough non-ferrous metal materials.
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