Lub raj cua sov yog tsim los ntawm tsib ntu: cov raj xa hluav taws xob sab nraud, cov hluav taws xob cua sov xaim, cov nqaj hlau lead, magnesium oxide hmoov thiab cov khoom sib khi. Cov khoom siv ntawm txhua qhov txuas thiab cov txheej txheem tsim tawm muaj qhov cuam tshuam ncaj qha rau qhov khoom kawg ntawm lub raj cua sov. Cov ntaub ntawv insulating tuaj yeem ua lub luag haujlwm tseem ceeb hauv kev teeb tsa ntawm lub raj cua sov. Ntawm no kuv yuav tham txog cawv ntawm cov txheej txheem rwb thaiv tsev sib txawv (magnesium oxide) ntawm lub raj cua sov.
Cov ntaub ntawv insulating muaj xws li caustic magnesium, crystalline magnesium oxide hmoov, alumina thiab huv quartz xuab zeb, hloov kho magnesium oxide, thiab lwm yam. Ua kom paub cov ntawv thov cov ntau ntawm cov khoom siv insulating sib txawv nrog koj:
1. Caustic magnesium yog tsim rau cua sov kav hauv qab 300 ℃;
2. Cov xuab zeb quartz yog qhov tsim nyog rau cov cua sov tub sab hauv qab 400 ℃;
3. Alumina yog qhov tsim nyog rau cua sov ua pa hauv qab 500 ℃;
4. Crystalline magnesium oxide yog qhov tsim nyog rau cov cua sov tub raj hauv qab 600 ℃;
5. Hloov cov roj carbon monoxide oxide yog qhov tsim nyog rau cov cua sov tub luam qis dua 800 ° C.
