Fused corundum cib rau iav melting rauv

Cov fused dawb corundum cib yog α-AL2O3, uas yog los ntawm trigonal siv lead ua system. Nws tau los ntawm melting industrial alumina ntawm qhov kub siab hauv qhov hluav taws xob hluav taws xob cua sov, txias thiab crystallization rau hauv qhov chaw, thiab tom qab ntawd tsoo, xaiv, ua thiab tshuaj ntsuam. Nws yog qhov ruaj khov ntawm ntau qhov sib txawv ntawm alumina. Nws muaj melting point (2030), kev kub ceev (3.99 ~ 4.0g / cm3), compact qauv, zoo thermal conductivity, me me thermal expansion coefficient (86 × 10-7 /) thiab niaj hnub. Nws yog amphoteric oxide, feem ntau tsis muaj zog alkaline lossis nruab nrab ntawm qhov kub siab, thiab muaj tshuaj zoo ruaj khov. Yog li ntawd, fused dawb corundum yog cov khoom siv hluav taws xob rau kev nqis peev casting. Fused dawb corundum cov khoom yog nplua nuj hauv cov khoom siv ntxhia thiab tus nqi qis, uas tsim nyog xaiv thiab txhawb nqa.

Kev ntsuas lub cev thiab tshuaj lom neeg ntawm fused corundum cib hauv iav cua sov rauv: