Aluminium thiab aluminium alloys tuaj yeem smelted nyob rau hauv ntau txoj kev sib txawv. Feem ntau siv yog coreless induction furnaces thiab trough induction furnaces, crucible furnaces thiab reflective open hearth furnaces (siv natural gas or fuel oil combustion) as well as electric resistance furnaces and electric radiation furnaces. Cov khoom siv rauv muaj ntau yam los ntawm qib siab - zoo ua ntej- alloyed ingots mus rau qhov cub ua los ntawm qib qis - khib nyiab. Txawm li cas los xij, txawm tias nyob rau hauv cov xwm txheej tsim nyog tshaj plaws rau smelting thiab casting, molten aluminium yog raug rau peb hom kev phiv:
• Thaum qhov kub thiab txias, qhov adsorption ntawm hydrogen thaum lub sij hawm ua rau muaj kev nce hauv hydrogen yaj hauv yaj.
• Thaum kub kub, yaj oxidizes lub sij hawm.
• Poob cov ntsiab lus alloying.
