Method for optimizing distribution of roll pressure

Abstract

The invention relates to a method for optimizing distribution of roll pressure which is especially optimal configuration of roll pressure (roll diameter difference) of a heavy and thick plate rollingmill that rolling consumption is reasonably controlled, plate type (hard bending of steel plate) in the rolling process is advantageously controlled, and the invention belongs to the technical field of steel plates production . According to the technical scheme, the steel biting speed is less than or equal to 20 revolutions per minute, the normal rolling speed is 40 revolutions per minute, and thepressure set value of rolling is less than or equal to 2mm; and the steel biting speed is not less than 15 revolutions per minute, and the pressure set minimum value of rolling is 0.5 mm. By means ofthe method for optimizing distribution of the roll pressure, rolling pressure set is changed from an original random state to an optimized state, rolling consumption is stably controlled, and meanwhile, operating habits of a rolling worker are met; steel plate hard bending is controlled, the service life of a straightening roller system is sharply improved, and the service life of related equipment is sharply improved, for example the service life of a supporting roll of the rolling mill and a working roller bearing; and meanwhile, the first-pass yield of steel plate production is raised to more than 90% from the original yield of being less than 70%, and the production cost is reduced.

Description

technical field [0001] The present invention relates to a method for optimizing the configuration of roll pressure, especially the optimal configuration of roll pressure (roll diameter difference) for wide and thick plate rolling mills to ensure reasonable control of roll consumption, and is beneficial to the control of the shape of the rolling process (steel plate hardness bending), which belongs to the technical field of producing steel plates. Background technique [0002] With the increasingly fierce competition in the steel plate market, users have put forward higher requirements for the appearance quality of steel plates. In order to improve the one-time pass rate of steel plate production, reduce or eliminate hard bending of steel plate, and improve the service life of the straightening machine, combined with the actual rolling situation, a more optimized method must be adopted for the setting of the roll pressure; at present, the method of controlling the roll pressu...

AI Technical Summary

Problems solved by technology

It is not conducive to the speed control of the rolling mill during the rolling process

In the production process, a large number of steel plates are hard bent, which greatly reduces the service life of the roller system of the straightening machine

And cause a lot of unplanned bad shape

Frequent replacement of the straightening roller system, resulting in low output and increased production costs