Muaj ntau ntau hom insulating castable refractories cov ntaub ntawv, thiab muaj ntau hom castable cov ntaub ntawv uas sib txawv zoo. Lawv siv cov qib sib txawv ntawm cov khoom raws li qhov ntsuas kub ntawm lub hauv ob sab phlu.
Tsawg cement castable yog tsuas yog ntxiv me me ntawm high aluminium cement, cov dej me me thaum tsim kho, thiab cov ntsiab lus calcium tsawg. Cov nyhuv tom qab siv tau ntev dua li cov khoom siv aluminium siab. Yog tias siv cov cement castable tsawg, cov phab ntsa ntawm lub cub tawg, sab saum toj ntawm lub qhov cub thiab lub thawv cua sov ntawm lub qhov cub cua sov siv tag nrho cov castable ntawm cov cement uas tsis tshua muaj dej, thiab qhov kev siv ntau npaum li cas.
Tom qab kev tsim kho ntawm insulating castable refractories, nws yuav tsum tau ci ua ntej nws tuaj yeem siv tau. Cov txheej txheem ntawm ci yog qhov tseem ceeb ntawm cov dej tsom xam txheej txheem ntawm castable nyob rau hauv lub qhov cub hauv ob sab phlu. Cov dej ntawm qhov cub yuav txuas ntxiv los ntawm lub qhov cub phab ntsa thiab sab saum toj ntawm lub qhov cub rau saum lub qhov cub, uas yog qhov tseeb ntawm cov txheej txheem uas cov dej tau rhaub rau saum npoo ntawm insulating castable refractories, thiab sab hauv. dej tseem evaporates saum npoo ntawm watering.
Tom qab castable thiab vibrating tsim, lub permeability yog tsis zoo. Yog li ntawd, lub qhov cub hauv qhov cub ci yuav tsum muaj qhov ntsuas kub kom tsim nyog los ntsuas dej, xyuas kom meej tias qhov nro hauv lub ncuav lub cev yog me dua li nws lub siab tsis kam rau lub sijhawm ntawd, xyuas kom lub qhov cub ceev thiab nyab xeeb ntawm lub cev castable, thiab ua tiav. lub neej kev pab ntau dua tom qab muab tso rau hauv ntau lawm. Lub hom phiaj ntev.
Cov dej hauv insulating castable refractories muab faib ua ob feem. Nws yog kev sib xyaw ua ke ntawm cov dej noo thiab dej, cov cement hydrophilic compounds, thiab aggregate uas ntxiv thaum nplawm. Qhov kub poob ntawm qhov dej yog muab faib ua peb theem, uas yog theem thib ob ntawm 20 ° C mus rau 200 ° C, 280 ° C txog 330 ° C, thiab theem thib peb ntawm 480 ° C txog 550 ° C; Peb ntu ntawm kev poob dej yog qhov tseem ceeb tshaj plaws. Tsis txhob maj kom sov thaum ci, maj mam ua kom sov thiab ci raws li peb theem kub.
Hauv cov ntaub ntawv insulating castable refractories, calcium cement cement yog ntxiv. Thaum qhov kub ntawm lub pob zeb hydrophilic compound ntawm cov cement mus txog ib lub sijhawm, cov dej dawb tau tawm ua ntej 300 ° C. Thaum nws yog 550 ° C, cov dej crystalline tau tawm, uas yog dej ntxhia, kuj hu ua cov dej ntxhia dej Essence. .
