Kodi nkhungu za graphite zingayeretsedwe bwanji?

Kodi nkhungu za graphite zingayeretsedwe bwanji?

Nthawi zambiri, akamaumba akamaliza, dothi kapena zotsalira (ndi zinamankhwala opangidwandikatundu wakuthupi) nthawi zambiri amasiyidwa pagraphite nkhungu. Kwa mitundu yosiyanasiyana ya zotsalira, zofunikira zomaliza zoyeretsera ndizosiyana. Ma resins monga polyvinyl chloride amatulutsa mpweya wa hydrogen chloride, womwe udzawononga mitundu yambiri yachitsulo cha graphite mold. Zotsalira zina zimasiyanitsidwa ndi zoletsa moto ndi ma antioxidants, zomwe zingayambitse dzimbiri kukhala chitsulo. Palinso mitundu ina ya pigment yomwe imatha kudzimbirira chitsulo, ndipo dzimbirilo n’zovuta kuchotsa. Ngakhale madzi ambiri osindikizidwa, ngati atasiyidwa pamwamba pa nkhungu ya graphite yosasinthidwa kwa nthawi yayitali, angayambitsenso kuwonongeka kwa nkhungu ya graphite.

Chifukwa chake, nkhungu ya graphite iyenera kutsukidwa ngati kuli kofunikira molingana ndi njira yomwe idakhazikitsidwa. Nthawi iliyonse nkhungu ya graphite imachotsedwa pa makina osindikizira, ma pores a nkhungu ya graphite ayenera kutsegulidwa kuti achotse zinyalala zonse za okosijeni ndi dzimbiri kuchokera kumadera omwe si ovuta kwambiri a nkhungu ya graphite ndi template kuti zisawonongeke pang'onopang'ono pamwamba ndi m'mphepete. cha chitsulo. Nthaŵi zambiri, ngakhale pambuyo poyeretsa, nkhungu zina za graphite zosapakidwa kapena dzimbiri zimayambanso kusonyeza dzimbiri. Chifukwa chake, ngakhale zitenga nthawi yayitali kutsuka nkhungu ya graphite yosatetezedwa, mawonekedwe a dzimbiri sangathe kupewedwa.

Kawirikawiri, pogwiritsira ntchito mapulasitiki olimba, mikanda yagalasi, zipolopolo za mtedza ndi ma pellets a aluminiyamu monga abrasives akupera mphamvu ndi kuyeretsa pamwamba pa nkhungu za graphite, ngati abrasives amagwiritsidwa ntchito kawirikawiri kapena molakwika, njira yoperayi idzayambitsanso mavuto. Porosity imapezeka pamwamba pa nkhungu ya graphite ndipo zotsalira zake zimakhala zosavuta kuzitsatira, zomwe zimapangitsa kuti zikhale zotsalira komanso kuvala, zomwe zingayambitse msangamsanga kapena kung'anima kwa nkhungu ya graphite, yomwe imakhala yovuta kwambiri kuyeretsa nkhungu ya graphite.

Panopa, nkhungu zambiri za graphite zili ndi mapaipi “odziyeretsa okha,” omwe amakhala ndi kuwala kwambiri. Pambuyo kuyeretsa ndi kupukuta dzenje lotulukira mpweya kuti mukwaniritse kupukuta kwa SPI#A3, mwina mutatha mphero kapena kugaya, zotsalirazo zimatayidwa kumalo a zinyalala za chitoliro chotulutsa mpweya kuti zotsalirazo zisamamatire pamwamba pa kugudubuza koyipa. kuyimirira . Komabe, ngati wogwiritsa ntchitoyo asankha zochapira zochapira, nsalu za emery, sandpaper, miyala yopera, kapena maburashi okhala ndi nsonga za nayiloni, mkuwa kapena chitsulo kuti apere pamanja nkhungu ya graphite, zingayambitse "kuyeretsa" mopambanitsa nkhungu ya graphite. .

Chifukwa chake, mutafufuza zida zoyeretsera zoyenera kuumba graphite ndi njira zopangira, komanso kunena za njira zoyeretsera komanso kuyeretsa zolembedwa m'mafayilo osungidwa, nthawi yopitilira 50% ya nthawi yokonza imatha kupulumutsidwa, komanso kuvala nkhungu ya graphite imatha. kuchepetsedwa moyenera.