Yas Refractory

Raws li hom refractory aggregate, nws tuaj yeem muab faib ua av nplaum, siab alumina, mullite, corundum, chromium, silicon carbide thiab zirconium-muajrefractory plastics. Raws li hom binder, nws tuaj yeem muab faib ua cov yas refractory ua ke nrog txhuas sulfate, phosphoric acid, phosphate, dej iav thiab resin.

Cov yas muaj qhov zoo thermal shock tsis kam thiab yooj yim rau kev tsim. Nws yog tsim rau ntau yam cua sov rauv, soaking furnaces, annealing furnaces, kub moj tej tawg rauv, thiab lwm yam. Nws kuj yuav siv tau rau lub cub tawg npog ntawm me me hluav taws xob arc rauv thiab burners ntawm high - kub furnaces.

Yas refractoriesyog ua los ntawm granular thiab powdery cov ntaub ntawv ua ke nrog binders xws li yas av nplaum thiab plasticizers, ces ntxiv ib tug me me dej, thiab tag nrho cov sib tov los ua ib hom ntawm cov av nkos nyuaj uas yuav khaws cia rau ib ntev lub sij hawm. Nws yog heev malleable unshaped refractory khoom.

Lub ntsiab Cheebtsam ntawmyas refractoriesyog granular thiab powdery cov ntaub ntawv, accounting rau 70% mus rau 85% ntawm tag nrho cov. Nws tuaj yeem ua los ntawm cov khoom siv raw khoom ntawm ntau yam ntaub ntawv, thiab feem ntau muab faib thiab muaj npe raws li cov khoom siv. Txij li cov khoom siv tsis zoo no feem ntau yog siv rau hauv ntau lub qhov cub cua sov uas tsis muaj kev sib cuag ncaj qha nrog cov yaj, av nplaum clinker thiab siab -alumina clinker feem ntau yog siv, thiab cov ntaub ntawv lub teeb granular feem ntau yog siv los npaj cov yas sib sib zog nqus.

Plasticity av nplaum yog ib qho tseem ceeb ntawm plasticity, nws tsuas yog 10% ~ 25% ntawm tag nrho qhov hnyav ntawm plasticity, tab sis nws ruaj khov rau kev sib txuas ntawm lub zog ntawm plasticity thiab nws lub cev tawv, plasticity ntawm plasticity, thiab ntim ntawm plasticity thiab nws lub cev hardened Ob qho tib si kev ua tau zoo thiab hluav taws kub kuj muaj kev cuam tshuam zoo. Hauv qee qhov kev nkag siab, qhov xwm txheej thiab cov av nplaum tuaj yeem txiav txim siab los tswj cov yas.

Piv nrog rau sintered refractory khoom ntawm tib yam khoom thiab lwm yam unshaped refractory cov ntaub ntawv, cov ntaub ntawv yas refractory muaj zoo thermal poob siab kuj, feem ntau yog vim li cas rau cov nram qab no yam: yas refractory ntaub ntawv ua los ntawm txhuas silicate, thaum lub sij hawm cua sov los yog thaum siv nyob rau hauv high kub, yuav tsis muaj deformation loj vim crystal transformation; cov ntxhia muaj pes tsawg leeg nyob ze ntawm cov cua sov saum npoo yog zoo crystallization ntawm mullite thiab cristobalite, nrog tsawg dua iav theem, thiab tsis tshua muaj kub nyob rau hauv lub cua sov nto, cov qauv thiab theem ntawm cov yas tuaj yeem hloov maj mam es tsis txhob maj; Cov yas tuaj yeem muaj cov qauv ntxeem tau zoo, thiab qhov nthuav dav coefficient thiab elastic modulus feem ntau qis.