Yuav ua li cas yaj cov npaj 6063 alloy thiab dab tsi rauv siv kuj tseem ceeb heev. Qee lub qhov cub muaj qhov chimney, thiab qee lub qhov cub tsis muaj chimneys. Feem ntau ntawm cov khoom siv hluav taws xob feem ntau yog cov furnaces square (rectangular furnaces), thiab cov qib siab tshaj plaws yog cov cub tawg. Qee lub cub tawg tuaj yeem nchuav dej txhuas ntawm lub kaum sab xis. Hais txog tonnage, muaj ib-tuj, ob-tuj, tsib-tuj, kaum-tuj, nees nkaum-tsib-tsib thiab tsib-ntxiv-tuj aluminium melting furnaces.
Qhov siab tshaj plaws yog ntxiv rau qhov cub hluav taws xob zoo li qub hauv qab aluminium melting rauv. Lub qhov cub zoo li qub yog siv los npaj 6063 alloy. Nws tuaj yeem tshem tawm slag thiab degassing hauv qhov cub no, cia nws sawv ntsug thiab tom qab ntawd nrum txhuas rods. Aluminium qab nthab yog siv rau kneading. . Qhov zoo ntawm cov alloys npaj nyob rau hauv primitive thee-fired furnaces yog txawv kiag li nyob rau hauv niaj hnub round furnaces. Feem ntau, tsis muaj teeb meem dab tsi roj hlawv hauv qhov cub, nws yuav tsum muaj lub chimney. Feem ntau ntawm cov khib nyiab pov tseg thiab cov khoom pov tseg uas tsim tawm thaum lub sij hawm hlawv cov roj tuaj yeem tawm ntawm lub chimney. Yog tias tsis muaj qhov chimney, cov pa khib nyiab thiab cov slag yog tag nrho cov melted nyob rau hauv cov dej txhuas, thiab txhuas rods cam khwb cia rau kneading yuav muaj loj slag npuas nyob rau hauv. Qhov no yog ib qho ntawm cov laj thawj rau qhov tsis zoo ntawm cov khoom siv aluminium, thiab nws kuj yog ib qho ntawm cov laj thawj rau cov nqi qis ntawm aluminium.