Isostatic kukanikiza graphitendi mtundu watsopano wa zinthu za graphite zomwe zinapangidwa m'zaka za m'ma 1960, zomwe zili ndi mndandanda wazinthu zabwino kwambiri. Mwachitsanzo, isostatic kukanikiza graphite ali wabwino kukana kutentha. M'mlengalenga, mphamvu zake zamakina sizimangotsika ndi kutentha, komanso zimawonjezeka, kufika pamtengo wake wapamwamba kwambiri pafupifupi 2500 ℃; Poyerekeza ndi graphite wamba, mawonekedwe ake ndi abwino komanso owundana, ndipo mawonekedwe ake ndi abwino; Coefficient of thermal expansion ndi yotsika kwambiri ndipo imakhala ndi kukana kwamphamvu kwamafuta; Isotropic; Amphamvu mankhwala dzimbiri kukana, matenthedwe bwino madutsidwe magetsi; Ili ndi magwiridwe antchito abwino kwambiri amawotchi.
Ndi chifukwa cha machitidwe ake abwino kwambiri kuti isostatic pressing graphite imagwiritsidwa ntchito kwambiri m'magawo monga zitsulo, chemistry, magetsi, mlengalenga, ndi mafakitale a mphamvu ya atomiki. Kuphatikiza apo, ndi chitukuko cha sayansi ndi ukadaulo, magawo ogwiritsira ntchito akukulirakulirabe.
Kupanga kwa isostatic pressing graphite
Kupanga kwa isostatic kukanikiza graphite kukuwonetsedwa mu Chithunzi 1. N'zoonekeratu kuti kupanga isostatic kukanikiza graphite ndi osiyana ndi maelekitirodi graphite.
Isostatic kukanikiza graphite kumafuna structural isotropic zopangira, amene ayenera kupedwa mu ufa wonyezimira. Ukadaulo wa Cold isostatic pressing forming uyenera kugwiritsidwa ntchito, ndipo mayendedwe akukazinga ndiatali kwambiri. Kuti akwaniritse kachulukidwe chandamale, kachulukidwe kambiri kakuwotcha pamafunika, ndipo kuzungulira kwa graphitization kumakhala kotalikirapo kuposa graphite wamba.
Njira ina yopangira isostatic kukanikiza graphite ndi kugwiritsa ntchito mesophase mpweya microspheres monga zopangira. Choyamba, ma mesophase carbon microspheres amathandizidwa ndi makutidwe ndi okosijeni okhazikika pamatenthedwe apamwamba, kutsatiridwa ndi kukakamiza kwa isostatic, kutsatiridwa ndi kuwerengera kwina ndi graphitization. Njirayi sinayambitsidwe m'nkhaniyi.
1.1 Zopangira
The zipangizo kubala isostatic kukanikiza graphite monga aggregates ndi binders. Zophatikiza nthawi zambiri zimapangidwa kuchokera ku petroleum coke ndi asphalt coke, komanso pansi pa phula. Mwachitsanzo, mndandanda wa AXF isostatic graphite wopangidwa ndi POCO ku United States amapangidwa kuchokera ku phula la phula la Gilsontecoke.
Pofuna kusintha magwiridwe antchito molingana ndi ntchito zosiyanasiyana, kaboni wakuda ndi graphite yochita kupanga amagwiritsidwanso ntchito ngati zowonjezera. Nthawi zambiri, mafuta a petroleum coke ndi asphalt coke amafunikira calcined pa 1200 ~ 1400 ℃ kuchotsa chinyezi ndi zinthu zosakhazikika musanagwiritse ntchito.
Komabe, pofuna kukonza makina ndi kachulukidwe kachulukidwe kazinthu, palinso kupanga mwachindunji kwa isostatic kukanikiza graphite pogwiritsa ntchito zida zopangira monga coke. Maonekedwe a coking ndiwakuti imakhala ndi zinthu zosasinthika, imakhala ndi zinthu zodzipangira yokha, ndipo imakula ndikulumikizana molumikizana ndi binder coke. Binder nthawi zambiri amagwiritsa ntchito phula la phula la malasha, ndipo malinga ndi zida zosiyanasiyana komanso zofunikira pabizinesi iliyonse, malo ochepetsera phula la malasha omwe amagwiritsidwa ntchito amachokera ku 50 ℃ mpaka 250 ℃.
Kuchita kwa isostatic kukanikiza graphite kumakhudzidwa kwambiri ndi zopangira, ndipo kusankha kwa zinthu zopangira ndi njira yofunika kwambiri popanga chomaliza chofunikira. Asanayambe kudyetsa, makhalidwe ndi kufanana kwa zipangizo ziyenera kufufuzidwa bwino.
1.2 Kupera
Kukula kophatikizana kwa isostatic kukanikiza graphite nthawi zambiri kumafunika kufika pansi pa 20um. Panopa, woyengeka kwambiri isostatic kukanikiza graphite ali pazipita awiri tinthu awiri 1 μ m. Ndiwoonda kwambiri.
Kuti agaye coke kukhala ufa wabwino wotero, pamafunika chopondapo kwambiri. Kupera ndi pafupifupi tinthu kukula 10-20 μ The ufa wa m kumafuna ntchito ofukula wodzigudubuza mphero, ndi pafupifupi tinthu kukula zosakwana 10 μ The ufa wa m kumafuna ntchito mpweya otaya chopukusira.
1.3 Kusakaniza ndi kukanda
Ikani pansi ufa ndi malasha phula phula binder molingana mu Kutentha chosakanizira kwa kukanda, kuti wosanjikiza wa phula ndi wogawana anamamatira pamwamba pa ufa coke particles. Mukakanda, chotsani phala ndikusiya kuti lizizire.
Nthawi yotumiza: Sep-27-2023