അലുമിനിയം ഷീറ്റിനെ അലുമിനിയം ഫോയിലാക്കി മാറ്റുന്ന പ്രക്രിയയിൽ നിരവധി ഘട്ടങ്ങൾ ഉൾപ്പെടുന്നു, കാസ്റ്റിംഗ് ഉൾപ്പെടെ, റോളിംഗ് ആൻഡ് ഫിനിഷിംഗ്.

അലുമിനിയം പ്ലേറ്റുകൾ അലൂമിനിയം ഫോയിലിലേക്ക് പ്രോസസ്സ് ചെയ്യുന്ന പ്രക്രിയയിൽ പ്രധാനമായും ഇനിപ്പറയുന്ന ഘട്ടങ്ങൾ ഉൾപ്പെടുന്നു:
അലുമിനിയം പ്ലേറ്റുകളും അലുമിനിയം ഫോയിലും അലൂമിനിയം അലോയ്കൾക്കുള്ള ആഴത്തിലുള്ള സംസ്കരണ അസംസ്കൃത വസ്തുക്കളാണ്.. അലുമിനിയം പ്ലേറ്റുകൾ സാധാരണയായി ഉരുട്ടി അലുമിനിയം കഷ്ണങ്ങളിൽ നിന്ന് മുറിക്കുന്നു. Aluminum foil has a thin thickness. How is it processed? The forming of aluminum foil is similar to that of aluminum plate, both of which are obtained by processing raw materials.

The raw material for aluminum foil die casting is aluminum plate, and the process of converting aluminum plate into aluminum foil involves several steps, കാസ്റ്റിംഗ് ഉൾപ്പെടെ, റോളിംഗ് ആൻഡ് ഫിനിഷിംഗ്.

Raw material:

Aluminum plate: the main raw material for aluminum foil production. These aluminum panels are usually made from primary or recycled aluminum.

The process of turning aluminum plate into aluminum foil

Melting: Aluminum sheets are melted in a furnace at temperatures in excess of 660°C (1220°F).
Alloying: During the melting process, other metals (ചെമ്പ് പോലുള്ളവ, മാംഗനീസ്, മഗ്നീഷ്യം, സിലിക്കൺ, or zinc) can be added to form alloys with desired properties (strength, flexibility, മുതലായവ).
Casting: The molten aluminum is then cast into large slabs (also called aluminum billets or rolled slabs) through a process called direct cold casting (DC) casting. This involves pouring molten aluminum into a mold and rapidly cooling it with water.

Hot rolled aluminum sheet

Preheat: Preheat the aluminum sheet to around 400-500°C (750-930°F) to make it more malleable.
Hot Rolling Mill**: A preheated slab passes through a series of rolling mills that apply pressure to reduce its thickness. The process is done in several stages, gradually reducing the board thickness from about 600 മി.മീ (24 ഇഞ്ച്) to about 2-6 മി.മീ (0.08-0.24 ഇഞ്ച്).

Cold rolled

Cooling: After hot rolling, let the aluminum plate cool.
Cold rolling mill: The cooled plates are further rolled in cold rolling mills at room temperature. This process further reduces the thickness, to about 0.1-0.2 മി.മീ (0.004-0.008 ഇഞ്ച്). Cold rolling also increases the strength and hardness of aluminum.

foil roll

Initial scroll:

Intermediate foil rolling: Cold rolled aluminum sheets are further processed in specialized foil rolling mills. These grinders use a combination of high pressure and precise control to reduce thickness to around 0.005-0.02 മി.മീ (0.0002-0.0008 ഇഞ്ച്).

Final scroll:

Double Reduction: To achieve the final foil thickness, aluminum can be rolled through a process called double reduction. This involves rolling two pieces of paper together and then separating them at the end. This helps achieve the ultra-thin specifications required for foil, typically as low as 0.006 മി.മീ (0.00024 ഇഞ്ച്) or less.

Annealing: Rolled aluminum is typically annealed (heated to around 300-400°C) to relieve stress and improve ductility.

ഉപരിതല ചികിത്സ:

Lubrication and coating: To facilitate further processing and improve performance, foils can be lubricated or coated. This can include adding oils, varnishes or other surface treatments to improve usability, corrosion resistance or adhesion to other materials.

Slitting and cutting:

Slitting: Use a precision slitting machine to cut wide rolls of aluminum foil into narrower rolls. This is done according to the customer’s width and length specifications.
Cutting: You can also cut the foil into thin slices if desired.
Package

Inspection: Finished aluminum foil is inspected for quality, including thickness uniformity, surface finish and absence of defects.
Packaging: Aluminum foil rolls or sheets are packaged to protect them from damage during shipping and storage. This may involve wrapping and boxing with protective materials.

The process of converting aluminum sheet into aluminum foil involves melting and alloying aluminum ingots, casting them into slabs, hot and cold rolling the slabs into plates, and finally rolling the plates into thin foils.