Factors uas txiav txim hnav txoj kev hnyav ntawm cov cib thim hlav Refractory bricks yog siv los siv ntau qhov chaw. Nyob rau hauv lub tshuab ua kom sov, cov cib nyom kuj tuaj yeem ua ke. Cov cib txhuam cov roj hmab yuav tsum tsis txhob tsuas yog ua kom muaj qhov tsis zoo ntawm cov hluav taws kub thiab kev kub hnyav, tab sis kuj ua tau raws li txoj cai uas coj los ua haujlwm.
Cov coj hnyav ntawm cov pob txha thim rov qab muaj feem xyuam rau kub. Qee cov cib, cov cib txhawm siab, feem ntau pom tias yog nyob ntawm tej qhov kub (xws li hauv qhov ywj siab tshaj li ntawm 700-900 ° C). Qhov siab tshaj qhov kub thiab txias, qhov txo qis ua haujlwm, piv txwv li Nws pom tau tias qhov kub nce tuaj, kev hnav kev hnyav zuj zus li qhov kev hloov ntawm elasticity ntawm lub cib thaav ciab tuaj. Thaum twg qhov kub nce thiab ncav lub siab kawg tus nqi ntawm lub elastic modulus, lub cev ua hauj hnyav yog zoo tuaj raws li lub modulus ntawm elasticity decreases. Piv txwv li, thaum cov av nplaum lo ntawm 1200 ~ 1350 ° C, txoj kev ua haujlwm hnyav dua yog zoo tshaj qhov qub kub. Thaum twg qhov kub ntxiv lawm, cov tshuaj kua viscosity hauv cov khoom ua kom thev plaub yog qis qis dua li qhov ntsuas kub siab tshaj 1400 ° C, thiab kev hnav kev hnyav yog txo qis. Qee qhov cov cib, cov chick-muaj refractory bricks, nce hnav tsis kam nrog kev ua kom kub dua.
Kev hnav kev hnyav ntawm lub cib pob txha ua kom siab yog nyob ntawm kab ntawv thiab cov qauv ntawm lub cib faj fab. Thaum lub tsho ntawm lub cib thaij cawv yog ib txoj hlua polycrystal uas muaj ib qho siv lead ua xwb, qhov hnyav kuj yog nyob ntawm qhov nyuaj ntawm lub pob zeb siv lead ua ntawm cov khoom siv. Kev kub hnyav thiab siab hnyav hnyav ntawm cov khoom. Thaum cov ntxhiab pob zeb ua kua yog non-isotropic, cov hmoov nplej siv lead ua tau zoo thiab cov khoom hnyav ntawm cov khoom siv yog siab. Thaum cov khoom tsim los ntawm ntau theem, nws txoj kev ua hauj lwm hnyav yog ncaj qha ntsig txog feem ntau ntawm cov khoom siv los yog qhov khoom porosity, thiab tseem muaj qhov sib txuas ntawm lub zog. Yog li ntawd, thaum muaj qee yam khoom ntawm cov cwj pwm ntawm lub cev kub hnyiab, kev hnav tsis sib haum ua rau nws lub zog sib zog, thiab cov ciav hlau ua kom zoo dua tau zoo dua. Cov neeg muaj pes tsawg leeg thiab cov qauv ntawm lub cib thaij, nrog rau qhov kub thiab txias, yuav cuam tshuam rau kev sib tw ua haujlwm, thiaj li hnav cov tawv ntoo ntawm cov cib thaij ua kom zoo dua yuav zoo dua!
