A New Electrohydraulic Hybrid Energy-Saving System Used on the Reversible Rolling Mills

Table 5

Time of each stage of one pass of the reversible rolling mills [2].

Stage	Operating mode	Time	Calculation formula	Value (s)
0 (0-t0)	Idling constant speed period	t0	Set idle constant speed period t0 = 2 s	2
1 (t0-t1)	Idling acceleration period	ty		1.69625
2 (t1-t2)	Accelerated rolling period	tj		2.335
3 (t2-t3)	Constant speed rolling period		It is not calculated here; it is assumed that the constant speed rolling period is 2 s and L1 is the length of rolled piece after rolling	2
4 (t3-t4)	Slow rolling period	tz1		1.3125
5 (t4-t5)	Idling deceleration period	tz2		1.583