Ukulungiselela powder
I-alumina powderilungiswa ibe yimpushana ngokwezidingo ezahlukene zomkhiqizo kanye nenqubo yokubumba ehlukene.Usayizi wezinhlayiyana zempushana ungaphansi kuka-1μm.Uma kudingekile ukukhiqiza imikhiqizo ehlanzekile ye-alumina ceramic, ngaphezu kokuhlanzeka kwe-alumina kufanele ilawulwe ku-99.99%, futhi idinga ukwenza inqubo yokugaya ye-ultrafine ukwenza umfaniswano wokusabalalisa usayizi wezinhlayiyana.
Uma usebenzisa ukubumba kwe-extrusion noma ukubumba umjovo, i-binder ne-ejenti yepulasitiki kufanele yethulwe ku-powder, ngokuvamile ngesilinganiso sesisindo sika-10-30% sepulasitiki ye-thermoplastic noma i-resin, i-organic binder kufanele ixutshwe ne-alumina powder ekushiseni kuka-150-200 ℃ ngokulinganayo, ukuze kube lula ukusebenza kokubumba.
Izinto eziyimpuphu ezakhiwe inqubo yokucindezela okushisayo azidingi ukwengeza i-binder.Uma ukusetshenziswa kwe-semi-automatic noma othomathikhi ukucindezela okomile ukubumba, kunezidingo ezikhethekile zobuchwepheshe ze-powder, sidinga ukusebenzisa indlela ye-spray granulation ukwelapha i-powder, yenze ibonakale iyindilinga, ukuze kuthuthukiswe uketshezi lwe-powder, kulula. ukugcwalisa udonga lwesikhunta ngokuzenzakalelayo ekubumbeni.I-spray granulation ye-powder iyadingeka ngesikhathi sokucindezela okomile, futhi i-polyvinyl alcohol yethulwa njenge-binder.Eminyakeni yamuva nje, isikhungo socwaningo e-Shanghai sesenze upharafini oncibilika emanzini njengesibophezelo se-spray granulation ye-Al2O3, enoketshezi oluhle lapho kushiswa.Impushana ngemva kwe-spray granulation kufanele ibe noketshezi oluhle, ukuminyana okuxekethile, izinga lokushisa lokugeleza kwe-Angle friction elingaphansi kuka-30℃, isilinganiso esifanelekile sikasayizi wezinhlayiyana nezinye izimo, ukuze kutholwe ukuminyana okuphezulu kokuluhlaza okungenalutho.
Indlela yokubumba
Izindlela zokubumba zeimikhiqizo ye-alumina ceramichlanganisa ukucindezela okomile, ukukhishwa kwe-grouting, i-extrusion, ukucindezela okubandayo kwe-isostatic, umjovo, ukusakaza okugelezayo, ukucindezela okushisayo nokucindezela okushisayo kwe-isostatic.Eminyakeni yamuva nje ekhaya nakwamanye amazwe kuphinde kwathuthukiswa ukubunjwa kwesihlungi sokucindezela, ukubumba komjovo wokuqiniswa okuqondile, ukubumba komjovo wejeli, ukubumba komjovo we-centrifugal kanye nezindlela zobuchwepheshe zokubumba zamahhala zokubumba.Umumo ohlukene, osayizi, ubujamo obuyinkimbinkimbi kanye nokunemba kwemikhiqizo kudinga izindlela zokubumba ezihlukene.
Isikhathi sokuthumela: May-09-2022