石墨(mo)電(dian)極(ji)與銅(tong)電(dian)極(ji)相比優(you)勢在哪(na)

         石墨(mo)電(dian)極(ji)不(bu)同於傳統銅(tong)電(dian)極(ji)的設計(ji)。很(hen)多模(mo)具(ju)廠通(tong)常對銅(tong)電(dian)極(ji)的粗(cu)加(jia)工(gong)和精(jing)加工(gong)都有不(bu)同的余量(liang)，而石墨(mo)電(dian)極(ji)使(shi)用幾乎(hu)相(xiang)同的余量(liang)，減少(shao)了CAD/CAM和機(ji)加(jia)工(gong)的數(shu)量(liang)。光(guang)是這個原因(yin)就足(zu)以在很(hen)大程(cheng)度(du)上(shang)提高(gao)模(mo)具(ju)型腔(qiang)的精(jing)度。  

        石墨(mo)電(dian)極(ji)的優點(dian)是加(jia)工(gong)容易(yi)，電(dian)火(huo)花去(qu)除率高，石墨(mo)損(sun)耗低(di)。因(yin)此，部分(fen)群發火(huo)花機(ji)客戶放(fang)棄(qi)銅(tong)電(dian)極(ji)，改用石墨(mo)電(dian)極(ji)。另外，有些(xie)特殊(shu)形(xing)狀(zhuang)的電(dian)極(ji)不(bu)能用銅(tong)做(zuo)，而石墨(mo)更容易(yi)成(cheng)型，銅(tong)電(dian)極(ji)更重，不(bu)適(shi)合(he)加(jia)工(gong)大電(dian)極(ji)。這些因(yin)素都導致了(le)壹些(xie)基(ji)於群(qun)的spark機(ji)被客戶使(shi)用石墨(mo)電(dian)極(ji)。
       石墨(mo)電(dian)極(ji)更容易(yi)加工(gong)，加工(gong)速度(du)明顯(xian)快於銅(tong)電(dian)極(ji)。比如(ru)石墨(mo)采(cai)用銑削(xue)技術(shu)加工(gong)，其加(jia)工(gong)速度(du)比(bi)其他(ta)金(jin)屬(shu)快2~3倍，而且(qie)不(bu)需(xu)要額(e)外(wai)的手(shou)工(gong)處(chu)理，而銅(tong)電(dian)極(ji)則(ze)需(xu)要手(shou)工(gong)打磨(mo)。同樣，如(ru)果(guo)用高速(su)石墨(mo)加(jia)工(gong)中心制(zhi)造(zao)電(dian)極(ji)，速度會更快，效(xiao)率會更高，也(ye)不(bu)會有(you)粉(fen)塵問(wen)題。在這些過程(cheng)中，選擇(ze)合適(shi)硬(ying)度(du)的(de)刀(dao)具(ju)和石墨(mo)可(ke)以減(jian)少(shao)刀(dao)具(ju)的磨損(sun)和黃(huang)銅(tong)的(de)損(sun)傷(shang)。如(ru)果(guo)將石墨(mo)電(dian)極(ji)的球磨(mo)時(shi)間(jian)與(yu)銅(tong)電(dian)極(ji)石墨(mo)電(dian)極(ji)相比，石墨(mo)比(bi)銅(tong)電(dian)極(ji)快67%。總(zong)的來(lai)說，石墨(mo)電(dian)極(ji)的加工(gong)時間(jian)比(bi)銅(tong)電(dian)極(ji)快58%。這樣，加工(gong)時間(jian)大大減(jian)少，制造(zao)成(cheng)本也(ye)降(jiang)低。