Hnav cov mullite casible muaj qhov qis dua thiab hnyav dua li cov cement dog dig, uas ua rau nws tsim tau yooj yim. Nws cov nyhuv thermal rwb thaiv tsev yog qhov zoo, uas tuaj yeem tiv thaiv qhov kub ntawm qhov sib txawv ntawm sab hauv thiab sab nraud ntawm lub tsev los ntawm qhov loj heev, txuag nqi hluav taws xob. Kev xaiv cov khoom siv raw rau lub teeb yuag mullite refractory castables yog tus yuam sij rau kev ua haujlwm siab castables. Los ntawm kev xaiv cov khoom tsim nyog thiab kev faib ua feem, lub teeb yuag mullite refractory castables nrog cov khoom zoo tuaj yeem npaj tau, uas tau siv dav hauv cov rwb thaiv tsev kub thiab cov qauv kev txhawb nqa hauv ceramics, metallurgy, aerospace thiab lwm yam haujlwm.
Raw khoom: 1. Mullite:
Lub hauv paus tseem ceeb ntawm lub teeb yuag mullite castable yog mullite. Mullite yog cov khoom siv ceramic nrog cov khoom kub zoo heev. Nws muaj siab refractoriness, qis thermal expansion coefficient thiab zoo thermal shock kuj. Cov khoom no ua rau mullite cov khoom siv zoo tagnrho rau kev ua haujlwm siab castables.
Raw khoom 2, alumina:
Alumina yog cov khoom siv ceramic uas tuaj yeem txhim kho cov refractoriness thiab high-temperature ua haujlwm ntawm castables. Nyob rau hauv lub teeb yuag mullite refractory castables, cov ntsiab lus alumina feem ntau yog nruab nrab ntawm 10% thiab 30%.
Raw khoom 3. Aluminium silicate fiber ntau:
Aluminium silicate fiber yog lub teeb yuag, muaj zog ceramic fiber ntau cov khoom uas tuaj yeem txhim kho lub teeb yuag thiab thermal rwb thaiv tsev ntawm castables. Cov ntsiab lus ntawm aluminium silicate fibers nyob rau hauv lub teeb yuag mullite castables feem ntau yog nruab nrab ntawm 10% thiab 20%.
Raw khoom 4. Binder:
Binder yog ib qho tseem ceeb ntawm mullite lub teeb yuag castables, uas tuaj yeem tswj tau zoo tag nrho ntawm cov khoom siv raw ntawm qhov kub thiab txias. Feem ntau siv cov khoom sib khi xws li Portland cement, iav dej thiab txhuas sulfate.
Raw khoom 5. Additives:
Txhawm rau txhim kho qee yam khoom ntawm lub teeb yuag mullite castables, qee cov additives feem ntau yog ntxiv, xws li cov dej-txo cov neeg ua hauj lwm, cov neeg ua dej tsis zoo, cov khoom siv accelerators, thiab lwm yam. .
Nyob rau hauv tus txheej txheem ntawm kev siv lub teeb yuag mullite castables, peb kuj yuav tsum tau them sai sai rau qee qhov teeb meem. Ua ntej tshaj plaws, xyuam xim rau qhov kub thiab av noo ntawm qhov chaw tsim kho, nrog rau cov khoom sib piv thiab cov txheej txheem nchuav ua ntej kev tsim kho. Secondly, peb yuav tsum nruj me ntsis raws li kev tsim kho specifications thiab cov qauv los xyuas kom meej kev tsim kho zoo. Thaum kawg, cov teeb meem tshwm sim thaum siv yuav tsum tau kho thiab kho kom raws sijhawm kom ntseeg tau tias muaj kev nyab xeeb thiab kav ntev ntawm lub tsev.
