Kulongedza kwa graphite, monga chinthu chofunikira chosindikizira, kumagwiritsidwa ntchito kwambiri m'mafakitale pozungulira ma shafts, zigawo zobwerezabwereza, ndi ntchito zosindikizira zosasunthika. Mfundo yake yogwiritsira ntchito imachokera ku thupi lapadera ndi mankhwala a graphite. Kupyolera mu kamangidwe kamangidwe ndi kusinthasintha kwa machitidwe ogwira ntchito, zimakwaniritsa bwino pakati pa kusindikiza koyenera ndi kukana kuvala. Nkhaniyi ifotokoza zakuthupi za kulongedza kwa ma graphite, makina ake osindikizira, zinthu zomwe zikukhudza magwiridwe antchito, komanso mawonekedwe ogwiritsira ntchito.
Katundu Wazinthu ndi Ntchito Zoyambira za Graphite Packing
Pachimake zinthu za graphite kulongedza zinthu zambiri kukodzedwa graphite kapena kusinthasintha graphite. Zimapangidwa ndi mankhwala opangira ma flake graphite (monga intercalation) ndikuwonjezera kutentha kwambiri. Izi zimafooketsa mgwirizano pakati pa zigawo za graphite, kupanga mphutsi za graphite zomwe zimakhala zotayirira komanso zaporous. Nyongolotsizi zimakanikizidwa kapena kuumbidwa kukhala mphete zonyamulira kapena zingwe zomwe zimasinthasintha komanso kukhazikika.
Zofunikira zazikulu za magwiridwe antchito ndi:
1. Kudzitchinjiriza-Kudzitchinjiriza: Magalasi a magalasi a graphite amaterera mosavuta, zomwe zimapangitsa kugundana kochepa (nthawi zambiri 0.05-0.15), kumachepetsa kuvala kwa pamwamba popanda kufunikira mafuta owonjezera.
2. Kutentha-kwapamwamba kwambiri: Grafite yoyera imatha kupirira kutentha kosalekeza kwa madigiri 450 (mpaka 800 digirii mothandizidwa mwapadera) ndikukhalabe okhazikika ngakhale pa kutentha kwambiri.
3. Chemical inertness: Graphite ndi inert kwa zidulo zambiri, mabasi, ndi organic solvents, sungunuka mwamphamvu oxidizing TV (monga concentrated sulfuric acid ndi nitric acid), kuti akhale oyenera kuwononga ntchito zinthu.
4. Compressibility ndi kulimba mtima: Polamulira kupanikizika (nthawi zambiri 20% -30%), chodzazacho chimatha kusintha mozungulira pansi pa axial pressure, kudzaza kusiyana kosindikiza ndikupanga mphamvu yosindikizira yoyamba.
