Modification configuration finishing roll group and modification configuration method thereof

Abstract

The invention relates to a modification configuration finishing roll group and a modification configuration method thereof, belonging to the technical field of metallurgical production equipment. The finishing roll group comprises an upper support roll, a lower support roll, an upper working roll and a lower working roll, wherein the upper and lower support rolls are supported on the rear sectionof a rack; the upper and lower working rolls are located between the upper and lower support rolls; and the generatrices of the upper and lower working rolls are formed according to an equation respectively, wherein the upper working roll is '+', and the lower working roll is '-'. Through the invention, the practical shapes of the upper and lower working rolls on the rear section of the rack forma corresponding convex roll and a concave roll respectively, and the rolling clearance conforms to the requirement; due to the abrasion of the support rolls, the contact pressure between the working roll and corresponding support roll is more uniform, and the local centralized stress condition between rolls is obviously improved; and meanwhile, as the protuberance of the upper working roll effectively compensates for the abrasion, the service life of the working roll is greatly prolonged.

Description

Finishing roll set for configuration modification and method for configuration modification technical field The invention relates to a configuration of finishing rolls, in particular to a configuration of finishing rolls configured for modification and a configuration method thereof, belonging to the technical field of metallurgical production equipment. Background technique In the hot rolling production process, the upper and lower work rolls 2, 3 and / or backup rolls 1, 4 (see Figure 1) of the four-high mill are affected by the rolling force, temperature and cooling conditions, and there are obvious wear and tear inconsistencies Phenomenon. For example, the wear 2' of the upper work roll 2 of the post-finishing stand is more serious than the wear of the lower work roll 2 3' (see Figure 3), and the wear of the lower support roll 4 of the last stand is generally greater than that of the upper support Wear 1' of roll 1 (see Figure 4). Due to the inconsistent wear of the ro...

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Problems solved by technology

However, this patent also fails to take into account the wear of backup rolls and work rolls, and its curve equation parameters are complicated to control. Since the patterned rolls cannot grind the CVC roll profile when rolling checkered plates, it is not suitable for rolling checkered steel plates.

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