Time Delay Effect on Regenerative Chatter in Tandem Rolling Mills

Table 4

The critical velocities for different stands when changes.

(m/s)	3.5	5.5
Critical velocity of single 1st stand (m/s)	24.63	24.87
Corresponding critical velocity of single 2nd stand (m/s)	36.05	36.40
Critical velocity of single 2nd stand (m/s)	31.38	37.89
More unstable stand	2nd stand	1st stand