Mullite casting yog ua los ntawm cov khoom zoo porous mullite aggregate, ntxiv cov hmoov zoo thiab cov khoom ntxiv rau do refractory castings.Qhov tseem ceeb particle loj ntawm mullite aggregate yog 12 hli;Kev siv lub sijhawm ntev kub yog 1350 ℃.Kev tsim kho ntawm mullite high-strength hnav-resistant refractory castable yog nruj.Lub refractory castable yuav tsum tau tov nrog dej huv.Lub formwork poured nrog dej yuav tsum muaj txaus rigidity thiab lub zog.Cov pwm loj yuav tsum yog.Deformation yuav tsum tiv thaiv thaum lub sij hawm tsim kho.Lub formwork pob qij txha yuav tsum nruj.
Nyob rau hauv kev tsim kho ntawm mullite refractory castable, anti sticking ntsuas yuav tsum tau coj mus rau hauv lub formwork, thiab saum npoo ntawm thermal rwb thaiv tsev masonry hu rau lub castable yuav tsum waterproof.Lub castable yuav tsum tau tov nrog ib tug muaj zog tov khoom.Lub sijhawm sib tov thiab cov kua ntim yuav tsum ua raws li cov lus qhia kev tsim kho.Lub tov khoom, hopper thiab lub thawv hnyav yuav tsum raug ntxuav thaum hloov cov tais diav.Kev sib xyaw ntawm fused castings yuav tsum ua kom tiav hauv 30min lossis raws li cov lus qhia kev tsim kho.Cov khoom tsim tshiab tshiab yuav tsum tsis txhob siv.Qhov kev nthuav dav sib koom ua ke ntawm cam khwb cia refractory yuav tsum tau teeb tsa raws li kev tsim qauv.
Tsis muaj kev quab yuam sab nraud lossis kev co yuav tsum raug siv thaum kho.Qhib lub pwm.Tsis muaj formwork yuav tsum tau loaded, thiab lub zog ntawm cov khoom siv casting yuav tsum yog li hais tias qhov saum npoo thiab cov ces kaum ntawm lub folded pwm tsis puas los yog deformed thiab yuav raug tshem tawm.Tom qab cov khoom siv casting nce mus txog 70% ntawm lub zog tsim, cov kabmob formwork yuav tsum raug tshem tawm.Cov kub thiab tawv castings yuav tsum tau ci rau qhov kub thiab txias ua ntej folding.Cov txheej txheej txheej txheej yuav tsum tsis muaj tev, tawg, kab noj hniav, thiab lwm yam. Cov kab nrib pleb me me raug tso cai.Prefabricated refractory castings yuav tsum tsis txhob muab tso rau hauv qhov qhib cua.Cov ntaub ntawv pov thawj los nag thiab kev ntsuas dej noo yuav tsum tau ua thaum muab tso rau hauv qhov qhib cua.
Lub mullite castable muaj qhov kub thiab txias thiab tuaj yeem raug ncaj qha rau hauv ob sab phlu ua haujlwm, paub qhov kub ntawm lub zog txuag, lub teeb chav tsev hnyav thiab 40 ~ 60% txo qis hauv cov qauv hnyav Tsawg thermal conductivity, ntxeem tau mullite aggregate, tsis tshua muaj thermal conductivity, zoo thermal rwb thaiv tsev kev ua tau zoo. , ceev kom qhuav, ua kom lub sij hawm kom qhuav, cov txiaj ntsig tseem ceeb ntawm kev lag luam.
Ib hom kev khi ua los ntawm mullite castable tuaj yeem tswj tau qhov kev ua tau zoo ntawm mullite.Lub binder yog qhov zoo tshaj plaws binder, uas tuaj yeem tsim mullite ntawm qhov kub thiab txias.Xav txog kev siv cov castable hauv ntau lub sijhawm, mullite yuav tsum tau tsim ntawm qhov kub thiab txias ntau li ntau tau.Pom tseeb, silica gel yog cov nplaum tsim nyog.Xav txog tus nqi qis, silica gel yog siv rau nws tus kheej txuam colloidal ncua kev kawm ntawv, nyob rau hauv uas Al2O3: SiO2 yuav tsum nyob ze los yog sib npaug rau qhov feem ntawm mullite.
Aluminium muaj hydration zoo thiab ntuj hardening zog.Kev ua haujlwm saum npoo yog siab heev, yog li nws lub luag haujlwm hauv refractory castable yog los teb nrog SiO2hmoov los ua mullite ntawm qhov kub thiab txias, yog li qhov sib ntxiv ntawm Al2O3+SiO2yog ib qho zoo tagnrho binder.Cov txiaj ntsig tau pom tias ob lub binders tuaj yeem tsim mullite thiab muaj lub zog txias zoo.
Post lub sij hawm: Oct-24-2022