Ukusebenza kwe-White Fused Alumina kuTyalo-mali lokuCasa
1. Isixhobo soTyalo-mali sokuphosa iShell
I-alumina edibeneyo emhlopheiveliswa ngokuxutywa kwe-alumina yemveliso ekumgangatho ophezulu kumaqondo obushushu angaphezu kwama-2000°C. Inika ubunyulu obukhethekileyo (α-Al₂O₃umxholo > 99-99.6%) kunye ne-refractoriness ephezulu ye-2050°C-2100°C, kunye ne-coefficient yokwandisa i-thermal ephantsi (malunga ne-8×10⁻⁶/°C). Ezi zakhiwo ziyenza ibe yeyona ndlela ibalaseleyo kwisanti ye-zircon yemveli njengesixhobo esiphambili sotyalo-mali. Ukufana kwayo kwamasuntswana aphezulu (ubungakanani bokutya okuziinkozo> 95%) kunye nokusasazwa kakuhle kunceda ukudala i-denser, i-molds eyomeleleyo, iphucula kakhulu ukugqitywa komphezulu kunye nokuchaneka komda ngelixa kuncitshiswa amaxabiso esiphako.
2. Ukuqinisa uMngundo
Ngobunzima be-Mohs be-9.0 kunye nogcino olubalaseleyo lobushushu obuphezulu (ukugcina ingqibelelo ngaphezu kwe-1900°C),i-alumina edibeneyo emhlopheyandisa ubomi benkonzo yokungunda ngama-30-50%. Xa isetyenziselwa i-molds okanye i-cores yensimbi etyhidiweyo, isinyithi esityhidiweyo, okanye i-alloys non-ferrous, ixhathisa ngokufanelekileyo ukhukuliseko lokuhamba kwesinyithi kunye nokunciphisa ukuphindaphinda kokulungiswa kunye nokugcinwa.
Izinto eziluncedo zeAlumina eFused White
(1) Ukuzinza kobushushu obuphezulu
I-alumina edibeneyo emhlopheinika uzinzo olubalaseleyo lwe-thermochemical ngexesha lemisebenzi yokuphosa. I-coefficient yayo yokwandisa i-thermal imalunga nesinye kwisithathu kwizinto eziqhelekileyo, ezinceda ukukhusela ukuchithwa kwesikhunta okanye ukuphosa ukuguqulwa ngenxa yokutshintsha kweqondo lokushisa ngokukhawuleza. Ukuvela kwayo kwerhasi ephantsi (ukukhutshwa kwerhasi <3 ml/g) inciphisa ubumdaka kunye neziphene zokuvuthela.
(2) uMgangatho wokuGqibela uMphezulu
Xa isetyenziswe njengomgubo ocolekileyo wokupolisha (ubungakanani benkozo 0.5-45μm),i-alumina edibeneyo emhlopheihambisa ngokungaguquguqukiyo, nokuba i-abrasion enokuthi ifezekise uburhabaxa bendawo yokuphosa ye-Ra <0.8μm. Ubume bayo bokuzilola (izinga lokuqhawula <5%) liqinisekisa ukusebenza kakuhle kokusika kunye neziphumo ezizinzileyo zokupolisha.
(3) Ukuziqhelanisa nenkqubo
Sinikezela ngeesayizi ezilungelelanisiweyo eziziinkozo ukusuka kwi-F12 ukuya kwi-F10000 ukuze zihambelane neenkqubo ezahlukeneyo zokuphosa:
Amabanga amancinane (F12-F100): Ukukhutshwa komngundo kwizakhiwo ezintsonkothileyo, ukonyusa amazinga empumelelo yokudiliza ngaphezulu kwe-25%.
Amanqaku amahle (F220-F1000): Ukuvelisa ii-cores zeceramic ezichanekileyo kunye nokwenza ukunyamezela kuqine±0.1 mm.
3. Ixabiso loPhuculo lweNkqubo
(1) Ukuphumelela kweendleko
Ukutshintsha isanti ye-zircon ngei-alumina edibeneyo emhlophe inokunciphisa iindleko zempahla nge-30-40%. Ikwavumela ukuba ubukhulu beqokobhe buncitshiswe nge-15-20% (ubukhulu beqokobhe obuqhelekileyo: 0.8-1.2 mm), ukunciphisa umjikelo wokwakha iqokobhe.
(2) IiNzuzo zokusiNgqongileyo
Ngomxholo we-ultra-low heavy metal (< 0.01%), i-alumina edibeneyo emhlophe idibana nemigangatho ye-ISO 14001 yokusingqongileyo. Isanti yenkunkuma i-100% inokuphinda isetyenziswe kwakhona kwaye ingaphinda isetyenziswe kwimveliso ye-refractory.
Izicelo eziqinisekisiweyo
Esi sixhobo samkelwe ngokubanzi kwiindawo ezikumgangatho ophezulu ezifana neeblayidi ze-injini ye-aerospace kunye nokuchithwa okuchanekileyo kwesixhobo sonyango. Iimeko eziqhelekileyo zibonisa ukuba inokunyusa izinga lokupasa kwemveliso ukusuka kwi-85% ukuya kwi-97%.