I-Mullite casting yenziwe nge-aggregate ye-mullite yekhwalithi ephezulu, yengeza impushana ecolekile kanye nezithasiselo ukuze kugqugquzelwe ukubunjwa kwe-refractory.Usayizi wezinhlayiyana ezibalulekile ze-mullite aggregate ngu-12mm;Izinga lokushisa lokusebenzisa isikhathi eside lingu-1350 ℃.Ukwakhiwa kwe-mullite ye-high-strength refractory refractory castable kuqinile.I-refractory castable kufanele ixutshwe namanzi ahlanzekile.I-formwork ethelwe ngamanzi izoba nokuqina okwanele namandla.Usayizi wesikhunta kufanele unembile.Ukuguqulwa kuzovinjelwa ngesikhathi sokwakhiwa.Amalungu e-formwork kufanele aqine.
Ezimfuneko zokwakhiwa kwe-mullite refractory castable, izinyathelo zokunqanda ukunamathela zizothathwa ukuze kusetshenziswe i-formwork, futhi ingaphezulu le-thermal insulation masonry elithintana ne-castable ngeke likwazi ukungena emanzini.I-castable izohlanganiswa ne-mixer enamandla.Isikhathi sokuxuba kanye nevolumu ye-liquid kufanele ihambisane nemiyalelo yokwakha.I-mixer, hopper kanye nesiqukathi sokukala kufanele sihlanzwe lapho kushintsha inani lamathreyi.Ukuxutshwa kwama-castings ahlanganisiwe kufanele kuqedwe kungakapheli imizuzu engama-30 noma ngokuya ngemiyalelo yokwakha.Izinto zokuphonsa ezisanda kwakhiwa akufanele zisetshenziswe.Inhlanganisela yokwandisa ehlangene ye-cast refractory izosethwa ngokuya ngezidingo zokuklama.
Akukho mandla angaphandle noma ukudlidliza okufanele kusetshenziswe ngesikhathi sokwelashwa.Vula isikhunta.Awekho ama-formwork azolayishwa, futhi amandla ezinto ezibunjiweyo azoba ngendlela yokuthi ingaphezulu namakhona esikhunta esigoqiwe angonakali noma akhubazekile futhi angasuswa.Ngemuva kokuthi izinto zokulingisa zifinyelele ku-70% wamandla okuklama, i-formwork yokufaka izosuswa.I-castings eshisayo neqinile izobhakwa ezingeni lokushisa elishiwo ngaphambi kokugoqa.Indawo ethelayo yolwelwesi ngeke ixebuke, imifantu, izimbotshana, njll. Ukuqhekeka okuncane kwenethiwekhi kuvunyelwe.Ama-refractory castings akhiwe ngaphambilini akumele apakishwe endaweni evulekile.Izinyathelo zokuvikela imvula kanye nokuvikela umswakama kufanele zithathwe lapho kunqwabelaniswa emoyeni ovulekile.
I-mullite castable inokushisa okuphezulu futhi ingavezwa ngokuqondile kulwelwesi olusebenzayo, ibona ukonga amandla okushisa aphezulu, isisindo seyunithi yokukhanya kanye nokuncipha kwesisindo sesakhiwo ngo-40 ~ 60% Ukuhanjiswa kwe-thermal okuphansi, i-porous mullite aggregate, ukuguquguquka okuphansi kwe-thermal, ukusebenza kahle kokufakwa kwe-thermal. , ukomisa ngokushesha, ukunciphisa isikhathi sokumisa, izinzuzo ezibalulekile zezomnotho.
Uhlobo lwe-binder olwenziwe nge-mullite castable lungagcina ukusebenza okuhle kakhulu kwe-mullite.I-binder iyi-binder engcono kakhulu, engenza i-mullite ezingeni lokushisa elithile.Uma ucabangela ukusetshenziswa kwe-castable ngezikhathi ezihlukahlukene, i-mullite kufanele yakhiwe ekushiseni okuphansi ngangokunokwenzeka.Ngokusobala, ijeli ye-silica iyingcina efanelekile.Uma kucatshangelwa inani eliphansi, ijeli ye-silica isetshenziselwa ukumiswa kwe-colloidal, lapho i-Al2O3: i-SiO2 kufanele isondele noma ilingane nengxenye ye-mullite.
I-Aluminium ine-hydration enhle kanye nezakhiwo eziqinile zemvelo.Umsebenzi ongaphezulu uphezulu kakhulu, ngakho-ke indima yawo ku-refractory castable iwukusabela nge-SiO2impushana ukwakha i-mullite ekushiseni okuphansi, ngakho-ke inani elingeziwe le-Al2O3+SiO2iyi-binder ekahle.Imiphumela ibonisa ukuthi izibophezelo ezimbili zingakha i-mullite futhi zibe namandla amahle okubanda.
Isikhathi sokuthumela: Oct-24-2022