Dab tsi yog qhov hnav tsis kam ntawm refractory bricks?

Refractory cib yog ib yam khoom siv refractory. Peb yuav tsum sim txhua yam ntawm cov khoom thaum lub sij hawm tsim khoom. Txij li cov khoom no feem ntau yog siv rau kev tsim kho vaj tse phab ntsa, qhov yuav tsum tau ua rau nws tus kheej hnav tsis kam yog qhov siab. Yog tias koj xav txhim kho nws qhov hnav tsis kam, koj yuav tsum xub tshem tawm cov yam ntxwv uas cuam tshuam rau cov khoom hnav tsis kam. Tom qab ntawd lo lus nug yog, dab tsi yog qhov khoom hnav tsis kam ua rau nws?

Lub abrasion kuj ntawm refractory bricks nyob ntawm nws tus kheej muaj pes tsawg leeg thiab qauv. Thaum cov khoom yog tsim los ntawm ntom polycrystals muaj li ntawm ib tug siv lead ua ib leeg, nws abrasion kuj feem ntau yog nyob ntawm hardness ntawm cov pob zeb hauv av crystals uas ua rau cov khoom. High hardness thiab siab hnav tsis kam ntawm cov khoom. Thaum cov pob zeb hauv av tsis yog-isotropic, cov hmoov nplej siv lead ua zoo thiab hnav tsis kam ntawm cov khoom yog siab. Thaum cov khoom tsim los ntawm ntau theem, nws 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 cov khoom siv.

Yog li ntawd, rau qee hom cib ntawm chav tsev kub, nws hnav tsis kam yog proportional rau nws lub zog compressive. Yog tias cov chaw tsim khoom ntawm cov khoom lag luam txiav txim siab cov ntsiab lus saum toj no thaum sintering cov refractory cib, cov khoom tsim tau zoo dua hnav tsis kam. . Tsis tas li ntawd, qhov hnav tsis kam ntawm cov khoom muaj feem xyuam nrog qhov kub thiab txias thaum siv. Qee cov khoom, xws li siab alumina cib, feem ntau suav hais tias yog nyob rau ntawm qhov kub thiab txias (xws li nyob rau hauv qhov elasticity ntawm 700 txog 900 degree ). Qhov siab dua qhov kub, qhov zoo dua qhov hnav tsis kam. Nws raug suav hais tias thaum kub nce, qhov hnav tsis kam txo qis thaum lub elastic modulus ntawm cib nce.