How Making Alu Foil Roll ?
The first step, smelting: use a large-capacity regenerative smelting furnace to convert the primary aluminum into molten aluminum, and pass the flow
The trough enters the casting and rolling mill. During the flow of molten aluminum, the refiner Al-Ti-B is added online to form
Continuous and uniform refining effect; the graphite rotor is on-line degassing and slag removal at 730-735℃, and the shape
A continuous and uniform removal effect:
The second step, rough rolling: the molten aluminum after the first step is introduced into the casting-rolling mill for casting and rolling into billets;
During this process, the inlet temperature of the cooling water in the inner cavity of the roller is controlled at 20-23℃, and the outlet temperature is
The temperature is controlled at 28-32℃, and the static pressure of the aluminum melt between the roll gaps is controlled at 0.004-0.005Mpa to ensure
Proof that the crystallographic direction of the material (100) area ratio>95%, the grain size ≤5um, rolling out
6.5-7.5mm slab;
The third step, intermediate rolling: Follow the description of the above-mentioned slab to be rolled again to the corresponding thickness with a cold rolling mill When the temperature is 4.5mm, send it into the annealing furnace, heat it to 360℃, keep it for 2 hours, then continue
Continue to heat to 580℃, keep for 18 hours, and conduct homogenization annealing to make the product size uniform.
The directionality is consistent; then continue to cold-roll to 0.60mm in the cold rolling mill, and send it back again
After heating the furnace to 460°C and holding it for 5 hours, it is cooled to 400°C and holding it for 7 hours.
Perform intermediate annealing; then continue rolling to a thickness of 0.3mm as aluminum foil wool;
The fourth step, foil rolling: use a four-roll irreversible foil rolling mill to remove the above 0.3mm aluminum foil
The material is rolled into finished aluminum foil. The production process of the ultra-thin aluminum foil is short and the operating cost is low
The scale of production investment is relatively small, and the quality of the produced ultra-thin aluminum foil has reached the world's advanced standard. Compared with the hot rolling production process, the investment cost is reduced by two-thirds in the production of bad materials, and the operation becomes The cost is reduced by more than half.
Does Foil Aluminium Safe For Freezing Food ? The ingredients bought at home can be wrapped in aluminum foil and frozen
