Optimization of Rolling Schedule for Single-Stand Reversible Cold Rolling Mill Based on Multiobjective Artificial Fish Swarm Algorithm

Table 3

Comparison of optimized schedule (Opt.) and empirical schedule (Emp.) for No.1 SPEC.

Pass	Method	Outlet thickness []	Reduction rate	Rolling force []	Power []	Rolling speed []	Rolling time []
1	Opt.	1.73	0.37091	8242	4449	500	2.932
	Emp.	1.92	0.30	6550	3184	500	2.67
2	Opt.	1.07	0.38150	8521	4618	600	3.909
	Emp.	1.16	0.395	8967	5169	600	3.632
3	Opt.	0.65	0.39252	8636	4609	700	5.433
	Emp.	0.70	0.395	8807	4870	700	5.073
4	Opt.	0.390	0.40	8749	4566	800	7.799
	Emp.	0.42	0.40	8717	4650	800	7.274
5	Opt.	0.235	0.39744	8396	4713	1000	10.32
	Emp.	0.255	0.39	8177	4631	1000	9.554
6	Opt.	0.16	0.31915	8717	5150	1200	12.617
	Emp.	0.16	0.37	9342	5856	1200	12.615