In India, rolling mills primarily use Aluminum (Al) alloys that offer a balance of strength, ductility, and thermal conductivity suitable for hot and cold rolling processes. The most common types include:
1. Commercial Pure Aluminum (1xxx Series)
– Example: 1050, 1060, 1100
– Use: Used for general-purpose rolling where high corrosion resistance and formability are needed (e.g., packaging foil, electrical components).
2. Aluminum-Manganese Alloys (3xxx Series)
– Example: 3003, 3105
– Use: Offers improved strength over pure Al; used in roofing sheets, automotive parts, and cookware.
3. Aluminum-Magnesium Alloys (5xxx Series)
– Example: 5052, 5083
– Use: High corrosion resistance & weldability; used in marine applications and structural components.
4. Heat-Treatable Alloys (6xxx Series)
– Example: 6061, 6063
– Use: Extensively rolled into structural profiles (e.g., window frames, aerospace components).
Key Considerations:
- Hot Rolling: Typically uses 1xxx or 3xxx series due to their workability at high temperatures.
- Cold Rolling: Preferred for precise thickness control (common in foil production).
Indian rolling mills often source these alloys from domestic producers like Hindalco, NALCO, or imported billets/slabs based on application requirements.
Would you like details on specific mill processes or alloy properties?
Leave a Reply