Production Of Aluminium Foil

Production Of Aluminium Foil

Production Of Aluminium Foil Process
The first step, smelting: use a large-capacity regenerative smelting furnace to transform the primary aluminum into molten aluminum, enter the casting and rolling mill through the launder, and add the refiner A1-TiB online during the flow of the molten aluminum to form continuous and uniform refinement Effect: The graphite rotor is on-line degassing and slag removal at 730-735℃, forming a continuous and uniform removal effect;
 
The second step, rough rolling: the molten aluminum in the first step is introduced into the casting mill for casting and rolling into billets; in this process, the cooling waterThe inlet temperature of the inner cavity of the roll is controlled at 20-23℃, the outlet water temperature is controlled at 28-32℃, and the aluminum melt is statically pressed at the roll gaps is controlled at 0.004-0.005Mpa to ensure that the crystalline direction of the material is 1100 area ratio>95%, the grain size is ≤5um, and the rolled plate is 6.5-7.5mm broken;
 
The third step, intermediate rolling: the above-mentioned slab is rolled again with a cold rolling mill, and when the thickness reaches 4.5mm, it is sent into the annealing furnace, heated to 360°C and kept for 2 hours, and then heated to 580°C 、Hold for 18 hours, conduct homogenization annealing to make the grain size uniform and directivity; then continue to cold-roll in the cold rolling mill to 0.60mm, send it to the annealing furnace again, and heat to 460℃, after 5 hours of holding , Cooling to 400 ℃, holding for 7 hours, intermediate annealing; then continue rolling to a thickness of 0.3mm as aluminum foil wool;
 
The fourth step, foil rolling: A four-roll irreversible foil rolling mill is used to rough-roll aluminum foil over 0.3mm into finished aluminum foil. The ultra-thin aluminum foil production process is short, the operating cost is low, and the production investment scale is small. The quality of the ultra-thin aluminum foil produced has reached the world's advanced level. Compared with the hot rolling production process, it reduces the investment cost of billet production. Two-thirds, operating costs are reduced by more than half.
 
Hscode For Aluminium Foil The customs code is formulated by the International Customs Council. The full English name is The Harmonization Code System (HS-Code)