Reutilization method of work roll bearing and intermediate roll bearing of cold rolling mill

Abstract

The invention discloses a reutilization method of a work roll bearing and an intermediate roll bearing of a cold rolling mill, which comprises the following steps: selecting one from bearings which are subjected to normal abandonment after four work load areas have been utilized; dividing the outer ring of the bearing into four new work load areas: selecting the middle position of a first work load area and a second work load area as a fifth work load area, selecting the middle position of the second work load area and a third work load area as a sixth work load area, selecting the middle position of the third work load area and a fourth work load area as a seventh work load area, and selecting the middle position of the fourth work load area and the first work load area as an eighth work load area; and then, regulating the outer ring of the bearing in the fixed direction of the bearing receiving a roll-bending force to the fifth work load area for first on-line utilization, regulating the work load area to the seventh work load area for on-line utilization after checking whether the bearing is in good condition three months later, and deducing the rest by analogy until the sixth work load area and the eighth work load area are utilized before being abandoned again. The method prolongs the service life of the bearing of the rolling mill.

Description

technical field [0001] The invention relates to a method for reusing bearings in steel rolling machines, in particular to a method for reusing work roll bearings and intermediate roll bearings of cold rolling mills. Background technique [0002] At present, four-row tapered roller bearings are commonly used in the work roll bearings and intermediate roll bearings of cold rolling mills, and the bearings are required to have good pressure resistance and impact resistance. Since the cold rolling mill has the function of adjusting the shape of the plate through roll bending, the bearings of its work rolls and intermediate rolls are mainly subjected to loads in a fixed direction during use. figure 1 The bending force in the direction indicated by the middle arrow. Among them, the pressure on the load area on the outer ring of the bearing on the work roll chock A, that is, the bending force, is 10t to 20t, and the pressure on the load area on the outer ring of the bearing on the ...

AI Technical Summary

Problems solved by technology

In this way, when the 4 load areas are used and scrapped, the utilization rate of the outer ring of the bearing is only 23.6%, so the effective utilization rate of the bearing is low

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