Ntawm ntau ntau yam ntawm txoj kev ntsib, lub refractory cib tau khov kho nws qhov chaw. Qhov kev xav tau rau nws yog zoo sib xws nrog tshwj xeeb kev khiav hauj lwm tej yam kev mob, uas tau ua rau impetus mus rau tsim ntawm ntau hom ntawm cov khoom no ntawm chav kawm nrog tom ntej labelling. Nws yog siv tau rau cov khoom siv sab hauv nrog qhov chaw kub siab los yog muaj hluav taws. Hauv tsev, xws li cov chaw tso pa taws, qhov txos thiab qhov cub .
Hom ntawm cov cib txha refractory.
- Fireclay cib.
- Quartz cib.
- Lwm hom hom ciav hlau.
Hauv cov txheej txheem tsim, tshwj xeeb hom av nplaum (chamotte) siv, uas tuaj yeem tiv taus kev kub ntxhov. Cov cuab yeej ntawm ntau lawm muab rau nws cov hlawv. Los xyuas kom meej tias cov cib ua tiav tsis tawg, qhov feem pua ntawm chamotte yuav tsum muaj tsawg kawg yog 70%, ntxiv 30% yog muab rau cov khoom siv mineral (quartz, coke, graphite). Ib txhia ntawm nws cov tsiaj muaj cov khoom ntuj tsim kiag li. Rau kev siv hauv tsev, nws yuav luag tsis paub yuav nrhiav ib daim tuaj hloov rau chamotte cib. Hauv kev sib piv rau cov liab cib liab ua ib txwm, lub zog ua kom sov sai sai thiab cia txias ntev ntev.
Cov neeg tsim khoom siv rau kev yoojyim xaiv cov ntaub ntawv raw, sau npe ntawm cov khoom nyob rau hauv daim ntawv ntawm tsab ntawv "SHA" nrog ib tug xov tooj ntawm nws tau txais. Cov cwj pwm zoo, xws li kev ua haujlwm, acid lossis alkaline ib puag ncig ua rau lub cib xav tau ntau qhov chaw ntawm kev lag luam. Feem ntau cov khoom muag rau qhov txos thiab qhov cub taws yog cov khoom PB5 uas muaj peevxwm kub txog 1300 ° C, thiab SHA5, tiv taus cua kub ntawm 1600 ° C. PB5 muaj ib qhov zoo nkauj, nws yog qhov pheej yig dua, yog li nws siv los ua ib qho kev tsim kho. ShA5, tsis zoo li nws cov analog, zoo kawg nkaus tus, nws tsis tas yuav ntxiv xov.
Masters rau qhov cub tso cai ntseeg tias cov khoom zoo, thaum ntaus, yuav tsum ntiv nplhaib zoo li lub tswb, thiab muaj hlau stains qhia tau zoo tua hluav taws. Lub suab nrov npau taws qhia tias kev ua txhaum kev tsim tshuab, thiab, raws li, txog kev sib yuav. Chamotte cib muaj ib tus qauv siv nrog ib qhov chaw ntxhib. Rau qhov yooj yim ntawm masonry, tuam ntxhab muaj diversified tus naj npawb ntawm tuaj pwm tsim.
Qhov feem pua ntawm cov av nplaum ci hauv cov khoom yog me heev. Nws lub tswvyim tseem ceeb yog quartz lossis sandstone. Tsuas siv cov hom cib tsuas siv nrog lawv tsis muaj zog hauv alkalis thiab acids. Tom qab xaus, lawv muaj cov yam ntxwv zoo ib yam li sandstones.
Cov khoom ua kom muaj zog dua qub yog carbon thiab ib qho kev cib. Lawv tsis poob lawv cov duab nyob rau hauv cov huab cua kub hnyav, tsis muaj qhov kev lag luam hnyav, piv txwv li, hlau ntau lawm, ua tsis tau. Lub zog ntawm cov khoom muaj pa roj carbon monoxide yog cov pa roj carbon monoxide, feem ntau los ntawm graphite. Lub cib hlais loj muaj xws li magnesite thiab dolomite cov khoom siv hauv metallurgy.
Sab nraud dai ntawm lub tsev.
Kev xaiv ntawm lub hom khoom ntawm cov khoom siv hluav taws xob tuaj yeem cuam tshuam los ntawm qhov ntsuas cua hauv cheeb tsam ua hauj lwm thiab cov tshuaj lom neeg muaj pes tsawg leeg ntawm cov tshuaj tua tau. Lub sij hawm tau qhia tias zoo li cov ntaub ntawv zoo txaus thiab seemingly txhim kho, zoo li clinker cib, yuav siv tau zoo rau lwm kho kom zoo nkauj ntawm qhov cub, barbecues thiab lwm yam khoom siv, uas yuav ua tau ib lub tsev. Rau kev ua hauj lwm thiab masonry chimney pom zoo kom yuav ib qho tshwj xeeb qhov cub ci, uas sawv los ntawm ntau yam xim thiab duab ntawm cov khoom. Ib qho kev zoo tshiab hauv kev ua lag luam yog qhov pom ntawm lub qhov cub ci ntsa iab glazed cib.
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