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

Table 4

Comparison of optimized schedule (Opt.) and empirical schedule (Emp.) for No.2 SPEC.

Pass	Method	Outlet thickness []	Reduction rate	Rolling force []	Power []	Rolling speed []	Rolling time []
1	Opt.	2.01	0.33	8493	4496	500	2.563
	Emp.	2.10	0.30	7663	3866	500	2.465
2	Opt.	1.33	0.33831	8770	5876	740	2.764
	Emp.	1.37	0.35	9284	5897	678	2.850
3	Opt.	0.87	0.34586	8738	5831	860	3.548
	Emp.	0.87	0.36	9429	5868	770	3.856
4	Opt.	0.60	0.31034	7761	5876	1200	3.859
	Emp.	0.56	0.36	8598	5894	1020	4.588
5	Opt.	0.39	0.35	8246	5829	1200	5.839
	Emp.	0.37	0.34	8100	5540	1200	6.519
6	Opt.	0.25	0.35897	8779	5644	1200	8.220
	Emp.	0.25	0.32	8279	5054	1200	8.318