Qingdao Tennry Carbon Co.,Ltd

Qingdao Tennry Carbon Co.,Ltd

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Qingdao Tennry Carbon Co.,Ltd
Address: Xiaobeiqu Community, Chengyang Street, Chengyang District, Qingdao, Shandong, China
Contact person: Fujun Pei
Contact phone: +86-532-88732781
Mobile phone: +8613583221964
Fax: +86-532-88732787

Graphite Can Be Instead Of Copper As The Discharge Material(2)

(1) Faster processing speed: under normal circumstances, the  mechanical processing speed of graphite can be faster than

copper 2 to 5  times; and discharge processing speed faster than copper 2 to 3 times;

The material is less prone to deformation: the advantages of  processing in the thin bar electrode; copper softening point of

about  1000 degrees, easily due to heat and deformation; graphite sublimation  temperature of 3650 degrees; thermal expansion coefficient of only copper 1 /30.

(2) Lighter weight: graphite density only copper 1/5, large electrode  discharge processing, can effectively reduce the

machine (EDM) burden;  more suitable for large-scale mold applications.

(3)  The discharge is smaller; because the spark oil also contains C atoms,  in the discharge processing, the high

temperature lead to the spark oil  in the C atoms are decomposed, instead of the graphite electrode surface  to form a

protective film, compensate for the graphite electrode loss.

(4) No glitches; copper electrode in the processing is completed, the  need to manually trim to remove the burr, and graphite

processing  without burrs, saving a lot of cost, while easier to achieve automated  production;

(5) Graphite is easier to polish and polish; because graphite cutting  resistance is only 1/5 of copper, easier to carry out

manual grinding  and polishing;

(6)  The lower the cost of materials, the price is more stable; due to the  recent rise in copper prices, and now the price of

isotropic graphite  lower than the copper, the same volume, Toyo carbon universal graphite  prices lower than the price of

copper 30 % ~ 60%, and the price is more stable, short-term price fluctuations are very small.

It is this unparalleled advantage that graphite gradually replaces copper as an electrode for EDM electrodes.

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