Kuponyera kwa mullite kumapangidwa ndi porous mullite aggregate yapamwamba kwambiri, ndikuwonjezera ufa wabwino ndi zowonjezera kuti zisonkhezere zosokoneza.The yovuta tinthu kukula kwa mullite akaphatikiza ndi 12mm;Kutentha kwa nthawi yayitali ndi 1350 ℃.Kupanga kwa ma mullite olimba kwambiri osamva kugwedezeka ndi kolimba.The refractory castable ayenera kusakaniza ndi madzi oyera.Mapangidwe otsatiridwa ndi madzi adzakhala ndi kukhazikika kokwanira ndi mphamvu.Kukula kwa nkhungu kukhale kolondola.Kuwonongeka kudzalepheretsedwa panthawi yomanga.Zolumikizana za formwork ziyenera kukhala zolimba.
Pazofunika zomanga za mullite refractory castable, njira zotsutsana ndi zomatira ziyenera kuchitidwa pakupanga mawonekedwe, ndipo pamwamba pamiyala yotchinga yotentha yolumikizana ndi choponyedwayo isakhale yopanda madzi.Choyikacho chidzasakanizidwa ndi chosakaniza cholimba.Nthawi yosakaniza ndi voliyumu yamadzimadzi iyenera kukhala molingana ndi malangizo omanga.Chosakaniza, hopper ndi chidebe choyezera ziyeretsedwe posintha kuchuluka kwa tray.Kusakaniza kwa ma castings osakanikirana kumalizidwa mkati mwa 30min kapena molingana ndi malangizo omanga.Zida zoponyera zatsopano sizidzagwiritsidwa ntchito.Kukula kophatikizana kwa cast refractory kudzakhazikitsidwa molingana ndi zofunikira zamapangidwe.
Palibe mphamvu yakunja kapena kugwedezeka komwe kungagwiritsidwe ntchito pochiritsa.Tsegulani nkhungu.Palibe formwork yomwe idzanyamulidwe, ndipo mphamvu ya zida zoponyerayo idzakhala yoti pamwamba ndi ngodya za nkhungu yopindidwa siziwonongeka kapena kupunduka ndipo zitha kuchotsedwa.Zinthu zoponyera zikafika 70% ya mphamvu zamapangidwe, mawonekedwe onyamula adzachotsedwa.Zowotcha zotentha ndi zolimba ziyenera kuphikidwa pa kutentha komwe kwatchulidwa musanayambe kupukuta.Kuthira akalowa pamwamba adzakhala wopanda peeling, ming'alu, cavities, ndi zina zotero.Zopangira zopangiratu zokanira sizidzapachikidwa panja.Njira zodzitchinjiriza ndi mvula komanso zoteteza chinyezi ziyenera kutsatiridwa pomanga panja.
The mullite castable imakhala ndi kutentha kwakukulu ndipo imatha kuwululidwa mwachindunji pazitsulo zogwirira ntchito, pozindikira kutentha kwakukulu kwa kutentha, kulemera kwa unit ndi 40 ~ 60% kuchepetsa kulemera kwa mapangidwe Kutsika kwamafuta otsika, porous mullite aggregate, otsika matenthedwe matenthedwe, ntchito yabwino yotenthetsera kutentha. , kuyanika mofulumira, kufupikitsa nthawi yowumitsa, phindu lalikulu lachuma.
Mtundu wa binder wopangidwa ndi mullite castable ukhoza kukhalabe ndi magwiridwe antchito abwino kwambiri a mullite.Chomangira ndi chomangira chabwino kwambiri, chomwe chimatha kupanga mullite pa kutentha kwina.Poganizira za kugwiritsidwa ntchito kwa castable muzochitika zosiyanasiyana, mullite iyenera kupangidwa pa kutentha kochepa momwe mungathere.Mwachiwonekere, silika gel ndi zomatira zoyenera.Poganizira zamtengo wotsika, gelisi ya silica imagwiritsidwa ntchito pakuyimitsidwa kofanana ndi colloidal, momwe Al2O3: SiO2 iyenera kukhala pafupi kapena yofanana ndi gawo la mullite.
Aluminium ili ndi hydration yabwino komanso yowumitsa zachilengedwe.Zochita zapamtunda ndizokwera kwambiri, kotero ntchito yake mu refractory castable ndikuchita ndi SiO2ufa kupanga mullite pa kutentha kochepa, kotero kuchuluka kwa Al2O3+SiO2ndi binder yabwino.Zotsatira zikuwonetsa kuti zomangira ziwirizi zimatha kupanga mullite ndikukhala ndi mphamvu yakuzizira yabwino.
Nthawi yotumiza: Oct-24-2022