Influence of the stands construction on the vibration of the working and backup rolls of the longitudinal-wedge mill

[摘要] New design of the mill is suggested in the work. MSC.VisualNastran 4D software of the finite element analysis was used for computer modelling of the longitudinal cold rolling process of the strip and it was calculated the stressstrain state and the vibration of the heavy-duty elements of the longitudinal-wedge mill (LWM) with bearings stands and without the bearings stands. As a result of modelling it was established that strips, rolled in the LWM without bearings stands, have longitudinal and transverse flatness, that is the consequence of the working rolls vibration. It was shown that strips, rolled in the LWM with the bearings stands, have not got any wavy surface. It was proved that during rolling in LWM the dangerous vibrations do not fall into the working space of the external loads, therefore construction of the new mill is good enough, in terms of strength at the vibrations.

[学科分类] 金属与冶金

[关键词] longitudinal-wedge mill;rolls;bearings;thin strip;vibration