Lub zog, hardness, thiab ntom ntawm refractory bricks lawv tus kheej, nrog rau kev sib txuas ntawm lub zog thiab microstructure ntawm cov khoom, muaj kev cuam tshuam loj rau kev hnav tsis kam ntawm cov khoom. Qhov kev pabcuam kub ntawm cov ntaub ntawv tseem muaj qee yam cuam tshuam rau lawv cov kev ua haujlwm hnav tsis kam. Yuav ua li cas txhim kho qhov hnav tsis kam ntawm cov ntaub ntawv. Ntau qhov kev tshawb fawb tau tshawb fawb txog qhov teeb meem no. Ntxiv nrog rau kev txhim kho qhov ntom ntawm cov ntaub ntawv thiab txo lawv qhov tsis xws luag, cov tswv yim tshawb fawb tseem ceeb tau muab faib ua cov hauv qab no:
(1) Txhim kho qhov loj ntawm cov nplej txhawm rau txhim kho qhov sib xws ntawm cov khoom siv;
(2) Qhia cov theem kev txhawb zog thiab cov khoom sib xyaw ua ke los ua cov khoom sib xyaw;
(3) Theem transformation toughening. Feem ntau hais lus, cov ntaub ntawv uas muaj zog dua muaj kev hnav zoo dua nyob rau hauv tib lub hardness.
Kev hnav tsis kam ntawm cov qauv tuaj yeem txhim kho los ntawm kev xaiv cov khoom siv nrog kev hnav zoo, qhia cov theem thib ob nrog lub siab tawv thiab lub zog, thiab xaiv cov khoom tsim nyog particle loj.
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