Nyob rau hauv xyoo tas los no, nrog rau kev loj hlob sai ntawm kev lag luam steel, ladle txheej txheem tswj kev siv tshuab tau hloov kho tas li, thiab cov kev xav tau zoo rau cov khoom siv refractory tau dhau los ua ntau dua. Raws li ib qho ntawm cov khoom tseem ceeb los xyuas kom meej qhov zoo ntawm cov hlau molten thiab lub neej ntawm lub ladle, qhov zoo thiab kev ua tau zoo ntawm refractory swb rooj vag phaj thiab tundish nozzle tau nyiam heev.
Lub refractory swb rooj vag phaj thiab tundish nozzle yog ib qho tseem ceeb tivthaiv rau nruam casting ntawm molten hlau. Nws lub luag haujlwm tseem ceeb yog los tswj qhov nrawm nrawm thiab kev taw qhia kom tsis txhob muaj teeb meem xws li rov qab ntawm cov hlau molten thiab slag suav nrog. Hom tundish nozzle feem ntau yog tsim los ntawm lub tes tsho steel thiab lub phaj zawv zawg ceramic. Lub tes tsho steel ua lub luag haujlwm hauv kev tiv thaiv thiab muab tso rau ntawm lub rooj vag swb, thaum lub rooj vag swb yog lub luag haujlwm los tswj cov dej ntws ntawm cov hlau molten thiab cais cov cua txias nruab nrab.
