Dynamic Model of the Hot Strip Rolling Mill Vibration Resulting from Entry Thickness Deviation and Its Dynamic Characteristics

Table 2

Comparison between the experimental data and the numerical results.

Type of steel	SPA-H	SPA-H	SPHC	FB60-P
F7 exit thickness (mm)	1.52	1.87	2.6	1.87
F2 entry thickness (mm)	16.62	16.62	20.72	18.09
F2 exit thickness (mm)	8.17	8.67	11.13	9.05
Deformation resistance (MPa)	201.11	190.47	150.28	181.96
Rolling speed(m/s)	2.89	2.5	2.34	2.56
Reduction ratio (%)	50.8	47.8	46.3	50
Calculated roll force (kN)	22373	19769	15636	20051
Experimental roll force (kN)	23813	20390	14294	21332
Error of roll force (%)	-6.05	-3.05	8.58	-6