Yog tias koj xav siv cov cib refractory ntev thiab txo tus nqi ntawm kev hloov cov cib refractory, thaum tib neeg xaiv cov cib refractory los siv, lawv yuav tsum sim xaiv cov cib refractory nrog cov hnav tsis kam, thiab cov kev pab cuam lub neej ntawm xws li refractory cib. yuav ntev. . Tom ntej no, kuv yuav coj koj kom nkag siab txog cov xwm txheej thiab qhov zoo ntawm refractory bricks thaum lawv siv.
Ua ntej ntawm tag nrho cov, hnav tsis kam ntawm refractory cib nyob ntawm seb muaj pes tsawg leeg thiab cov qauv ntawm refractory cib. Thaum muaj pes tsawg leeg ntawm lub refractory cib yog ib tug ntom polycrystal muaj li ntawm ib tug siv lead ua, qhov hnav tsis kam tsuas yog nyob ntawm hardness ntawm cov pob zeb hauv av crystals uas tsim cov khoom. High hardness, siab hnav tsis kam ntawm cov khoom. Thaum cov ntxhia siv lead ua tsis yog-isotropic, cov nplej loj me me thiab hnav tsis kam ntawm cov khoom yog siab. Thaum cov khoom tsim los ntawm ntau theem, nws qhov hnav tsis kam yog ncaj qha ntsig txog qhov ntom ntom lossis porosity ntawm cov khoom, thiab tseem muaj feem xyuam rau kev sib txuas ntawm lub zog ntawm cov khoom.
Yog li ntawd, rau ib yam ntawm refractory cib nyob rau hauv chav tsev kub, nws hnav tsis kam yog proportional rau nws compressive zog. Yog hais tias lub refractory cib chaw tsim tshuaj paus txiav txim siab cov saum toj no yam thaum sintering lub refractory cib, hnav tsis kam ntawm cov refractory cib kuj zoo dua.
Tsis tas li ntawd, qhov hnav tsis kam ntawm cov cib refractory muaj feem xyuam rau qhov kub thiab txias thaum siv. Qee cov cib refractory, xws li siab alumina cib, feem ntau suav hais tias yog hnav-tiv taus ntawm qhov kub thiab txias (xws li hauv qhov elasticity hauv qab 700-900 degree), qhov kub siab dua. Qhov qis dua qhov tsis kam yog, nws tuaj yeem txiav txim siab tias thaum kub nce, qhov hnav tsis kam txo nrog qhov nce ntawm elastic modulus ntawm refractory cib.
Thaum qhov kub thiab txias nce mus txog qhov siab tshaj plaws ntawm cov elastic modulus, qhov hnav tsis kam nce nrog qhov txo qis ntawm elastic modulus. Xws li av nplaum cib ntawm 1200 ~ 1350 degree, qhov hnav tsis kam yog qhov zoo dua li cov nyob hauv chav sov. Thaum qhov kub thiab txias ntxiv, thaum nws nce mus txog 1400 degree, viscosity ntawm cov kua theem hauv cov khoom refractory txo qis, thiab hnav tsis kam txo qis raws li. Qee cov cib refractory, xws li chrome-muaj refractory cib, nce hnav tsis kam thaum kub nce.
Cov saum toj no yog ob lub ntsiab tseem ceeb uas cuam tshuam rau kev hnav tsis kam ntawm refractory bricks soj ntsuam los ntawm peb. Thawj qhov tseem ceeb yog nyob ntawm cov chaw tsim khoom ntawm cov pob zeb refractory los txhim kho cov txheej txheem tsim khoom thiab cov qauv los ua kom cov hnav tsis kam, thiab qhov thib ob yog nyob ntawm kev siv cov cib refractory. Lub tuam txhab siv cov refractory bricks nyob rau hauv nruj raws li qhov yuav tsum tau ntawm kev siv ib puag ncig, thiaj li yuav xyuas kom meej tias hnav tsis kam thiab ua tiav lub hom phiaj ntawm kev siv mus sij hawm ntev.
