Chifukwa chiyani graphite ingasinthe mkuwa ngati electrode?

Kodi graphite ingasinthe bwanji mkuwa ngati electrode? Zogawidwa ndiMkulu makina mphamvu Graphite Electrode China.

M'zaka za m'ma 1960, mkuwa unkagwiritsidwa ntchito kwambiri ngati ma elekitirodi, ndipo chiwerengero cha magwiritsidwe ntchito chinali pafupifupi 90% ndi graphite pafupifupi 10%. M'zaka za zana la 21, ogwiritsa ntchito ambiri adayamba kusankha ma graphite ngati ma elekitirodi. Ku Ulaya, zoposa 90% ya zinthu elekitirodi ndi graphite. Copper, yomwe inali chinthu chachikulu kwambiri cha electrode, yatsala pang'ono kutayika m'mphepete mwa graphite. Kodi n’chiyani chinayambitsa kusintha kwakukulu kumeneku? Inde, pali ubwino wambiri wa graphite electrode.

(1) mofulumira processing liwiro: ambiri, mawotchi processing liwiro laGraphite Electrode yogulitsaakhoza kukhala 2 ~ 5 nthawi mofulumira kuposa mkuwa; Komabe, edm ndi 2 ~ 3 nthawi mofulumira kuposa mkuwa, ndipo zinthuzo zimakhala zochepa kwambiri kuti ziwonongeke. Kufewetsa kwa mkuwa ndi pafupifupi madigiri 1000, ndipo ndikosavuta kupundutsidwa ndi kutentha. Graphite sublimation kutentha kwa madigiri 3650; Coefficient ya kukula kwamafuta ndi 1/30 yokha yamkuwa.

(2) kulemera kopepuka: kachulukidwe ka graphite ndi 1/5 yokha ya mkuwa, yomwe ingachepetse bwino katundu wa chida cha makina (EDM) pamene maelekitirodi akuluakulu amapangidwa ndi kutulutsa; More oyenera ntchito lalikulu nkhungu.

(3) kumwa kutulutsa kumakhala kochepa; Popeza kuti mafuta a spark amakhalanso ndi maatomu a C, panthawi yotulutsa utsi, kutentha kwakukulu kumapangitsa kuti maatomu a C omwe ali m'mafuta a spark awonongeke, zomwe zimapangitsa filimu yoteteza pamwamba pa electrode ya graphite, kubwezera kutaya kwa electrode ya graphite. .

(4) palibe burrs; Pambuyo pokonza electrode yamkuwa, imayenera kukonzedwa pamanja kuti ichotse ma burrs, pamene graphite imakonzedwa ndiFakitale ya Graphite Electrodeopanda ma burrs, omwe amapulumutsa ndalama zambiri ndikupangitsa kukhala kosavuta kupanga makina

(5) graphite ndi yosavuta kugaya ndi kupukuta; Popeza graphite ili ndi gawo limodzi mwa magawo asanu a kukana kwa mkuwa, ndikosavuta kugaya ndi kupukuta ndi manja

(6) mtengo wotsika wazinthu ndi mtengo wokhazikika; Chifukwa cha kukwera kwa mtengo wamkuwa m'zaka zaposachedwa, mtengo wa isotropic graphite ndi wotsika kuposa wamkuwa. Pansi pa voliyumu yomweyi, mtengo wazinthu zonse za graphite za toyo carbon ndi 30% ~ 60% m'munsi kuposa zamkuwa, ndipo mtengo wake ndi wokhazikika, kusinthasintha kwamitengo kwakanthawi kochepa kumakhala kochepa kwambiri.

Chifukwa cha mwayi wosayerekezeka uwu, graphite yasintha pang'onopang'ono mkuwa monga chinthu chokondedwa cha electrode ya EDM.