Step 1: Concept
The sequential steps in the manufacturing process involve starting with a metal disc from a coil, shaping it into a cup through drawing, reducing its diameter further by redrawing, thinning the walls using an ironing process, and finally trimming to the required length.
Step 2: Meaning
Understanding the correct sequence of operations ensures efficient production and quality control in can manufacturing.
Step 3: Analysis
1. B (Disc cut from the coil): The process begins with cutting a metal disc from a continuous coil.
2. A (Drawn into shallow cup): The disc is then drawn to form a shallow cup, which is the first step in shaping the can body.
3. C (Redrawn into smaller diameter cup): To achieve the desired shape and size of the can, the shallow cup undergoes redrawing to reduce its diameter further.
4. E (Wall thinning by ironing process): The walls are then thinned through an ironing process to ensure the can has the right thickness for strength and durability.
5. D (Finished can trimmed to required length): Finally, the can is trimmed to the desired length.
The sequence B, A, C, E, D correctly follows these steps in order without skipping any necessary operations or adding extra ones that are not part of the manufacturing process.
Step 4: Conclusion
The correct sequence for manufacturing a two piece can (drawn and wall ironed) involves cutting the disc from the coil first, then drawing it into a shallow cup, redrawing to reduce its diameter further, thinning the walls by ironing, and finally trimming the finished can to the required length.
Final Answer: (A)