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| Electrical and Chemical Guide |
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| EDM Electrodes |
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Electric discharge machining (EDM) electrodes require graphite because it ensures less electrode wear, faster metal removal rates and both the preferred surface finish and tolerance. Our EDM electrodes are widely used for EDMing automotive forging molds, plastic injection molds and aluminum extrusion canisters. EDM graphite is marketed on the international market. |
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| Tip on machining graphite |
Compared with copper, graphite is an easy-to-machine material. Its machining speed is only one fifth of that required for copper. |
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| Glassy carbon |
Compared with copper, graphite is an easy-to-machine material. Its machining speed is only one fifth of that required for copper.
1.Recommended tool shape
There are commercially available graphite-use end mills with long length of cut, long shank,and an airhole to facilitate machining dust removal. End mills used for graphite machining have large rake and clearance angles than those used for milling steel. Grapgite-used end mills also have a large dust pocket to facilitate dust disposal.
2.Recommended tool materials
Cutting-edge life tests have shown that sintered diamond is the best tool material,followed by cemented carbide,high-speed steel,CBN,and ceramics.Cemented carbide (K10 and K05)are used most frequently because they are readily available and easy to work with.
3.Recommended feed speed
Rough milling0.15-0.25mm/tooth Final milling0.05-0.15/tooth
4.Recommeded cutting direction
Adopt down-cuts for end milling since up-cuts may results in chipping along the working edge of the graphite.
5.Recommended cut depth
A jet of air gushing from the end mill tip will facilitate the removal of machining dust,allowing cut depths five times as deep as the end mill's diameter.However, you may find that milling at a small cut depth under a high feed rate will be more efficient.
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Carbon Brush
Refined through years of experience, Tokai's high quality brushes are suitable for diverse applications. Our brushes are high quality both in rectifying capacity and high speed resistivity. With a solid reputation among our customers, our brushes are used for traction motors and electric motors. |
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For Optical Fiber Manufacturing: Hot Zone Parts
High purified graphite is used to manufacture optical fibers as heaters and heat shields. |
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