固定碳	99
品名	石墨電極
規(guī)格	800
型號(hào)	模壓
牌號(hào)	信瑞達(dá)
水分	0.05
膨脹度	0.1
篩上物粒度	98
灰分	0.1
揮發(fā)分	0.1
篩下物粒度	0.2

石墨電極優(yōu)勢(shì) 一、速度快； 石墨放電比銅快2-3倍，材料不易變形，在薄筋電極的加工上優(yōu)勢(shì)明顯，銅的軟化點(diǎn)在1000度左右，容易因受熱而產(chǎn)生變形，相比而言，石墨材料熱膨脹系數(shù)只有銅材的1/30； 二、重量輕； 石墨的密度只有銅的1/5，大型電極進(jìn)行放電加工時(shí)，能有效降低機(jī)床(EDM)的負(fù)擔(dān)，更適用于大型模具的應(yīng)用； 三、損耗??； 由于火花油中含有C原子，在放電加工時(shí)，高溫導(dǎo)致火花油中的C原子被分解出來，而在石墨電極的表面形成保護(hù)膜，補(bǔ)償了石墨電極的損耗；
 Graphite electrode advantages :First, the high speed; Graphite discharge 2-3 times faster than copper, the material is not easy to deformation, obvious advantages on thin steel electrode processing, the softening point of copper in 1000 degrees, easy to produce because of the heat deformation, by contrast, only 1/30 of the copper graphite material coefficient of thermal expansion; Second, the light weight; The density of graphite is only 1/5 of copper, large electrode in EDM, can effectively reduce the burden of machine tools (EDM), more suitable for the application of large injection mould are; Three, small loss; Because the spark oil contains C atoms, in edm, high temperature lead to spark came out of the oil C atoms are broken down, and on the surface of graphite electrode form a protective film, compensate the loss of the graphite electrode.