Cov kev cai dav dav rau cov khoom siv refractory rau hluav taws xob arc rauv muaj xws li:
(1) Lub refractoriness yuav tsum siab. Lub arc kub tshaj 4000 degree, thiab steelmaking kub yog 1500 ~ 1750 degree, qee zaum siab li 2000 degree, yog li cov ntaub ntawv refractory yuav tsum muaj siab refractoriness.
(2) Lub softening kub nyob rau hauv load yuav tsum siab. Lub tshuab hluav taws xob ua haujlwm nyob rau hauv qhov kub thiab txias load, thiab lub cub tawg lub cev yuav tsum tau tiv taus qhov yaig ntawm molten steel, yog li cov khoom siv refractory yuav tsum muaj qhov kub thiab txias.
(3) Lub zog compressive yuav tsum siab. Lub tshuab hluav taws xob hauv ob sab phlu raug cuam tshuam los ntawm kev cuam tshuam ntawm kev them nyiaj thaum them nyiaj, lub zog zoo li qub ntawm cov hlau molten thaum smelting, kev yaig ntawm cov hlau ntws thaum lub sij hawm tapping, thiab txhua yam kev co thaum ua haujlwm. Yog li ntawd, cov khoom siv refractory yuav tsum muaj siab compressive zog.
(4) Lub thermal conductivity yuav tsum me me. Txhawm rau txo qhov poob ntawm hluav taws xob hluav taws xob thiab txo qhov kev siv hluav taws xob, cov khoom siv refractory yuav tsum muaj cov thermal conductivity tsis zoo, uas yog, thermal conductivity coefficient yuav tsum me me.
(5) Thermal stability yuav tsum zoo. Nyob rau hauv ob peb feeb los ntawm tapping rau them rau hauv hluav taws xob rauv steelmaking, qhov kub thiab txias poob los ntawm ib ncig ntawm 1600 degree mus rau qis dua 900 degree, yog li cov ntaub ntawv refractory yuav tsum tau muaj thermal stability.
(6) Muaj zog corrosion kuj. Thaum lub sij hawm steelmaking txheej txheem, slag, furnace gas thiab molten steel tag nrho cov muaj zog tshuaj yaig los ntawm cov ntaub ntawv refractory, yog li refractory hluav taws cov ntaub ntawv yuav tsum tau muaj zoo corrosion kuj.
