c) Raising temperature though it had a cost implication. DOE was conducted to have optimized raise in temperature. We have a further scope for raising temperature from 575 to 610°C.
3) Trials with wider widths were successful. This resulted in huge saving. Rise in temperature and adjustment in slab length led to roll wider widths. Reducing slab length was a trade off in between productivity and developing hot rolling capability and the management opted for roll-ability.
4) By establishing process controls, smooth operation was ensured. Developing equipment / process capabilities helped in de-constraining the supply chain bottlenecks. This helped not only in sound inventory control system, but also a judicious balancing between conflicting cost and benefits along with speedy delivery to customers, which is one of vital requirements in this era of lean manufacturing.