Difference optimization setting method for leveling liquid flow in wet leveling rolling process

Abstract

The invention discloses a difference optimization setting method for leveling liquid flow in the wet leveling rolling process. The difference optimization setting method mainly comprises the following steps that firstly, field parameters are collected; secondly, the total leveling liquid flow set value, the upper roll gap leveling liquid distributing coefficient and the lower roll gap leveling liquid distributing coefficient are initialized; thirdly, the flow of the upper roll gap leveling liquid and the flow of the lower roll gap leveling liquid are calculated; fourthly, the low roll gap leveling liquid efficiency coefficient is calculated; fifthly, the effective leveling liquid flow of an upper roll gap and a lower roll gap is calculated; and sixthly, the optimal total leveling liquid flow set value, the optimal upper roll gap leveling liquid distribution coefficient and the optimal lower roll gap leveling liquid distribution coefficient are output. According to the difference optimization setting method, the differences of extension, roughness, corrosion resistance and cleanliness of the upper surface and the lower surface of strip steel are reduced, meanwhile, waste of the upper roll gap leveling liquid is reduced, and the total consumption of the leveling liquid and the waste liquid treatment cost are reduced to the maximum degree.

Description

technical field [0001] The invention relates to the field of metallurgical rolling, in particular to a method for setting the flow rate of leveling liquid in the wet leveling rolling process. Background technique [0002] In the wet skin pass rolling process, in order to improve the anti-rust ability and surface quality of the strip, water-soluble or oil-soluble anti-rust agents are widely used on site as the skin pass liquid to spray to the roll gap. At present, the leveling unit adopts the upper and lower flow rate setting methods for the setting of the leveling liquid. as attached figure 1 As shown, due to the existence of strip steel in the upper roll gap, more leveling liquid enters the roll gap and plays a role than the lower roll gap, and the leveling liquid in the lower roll gap will flow to the waste liquid collector due to gravity, so that Make the amount of effective leveling liquid smaller than the upper roll gap. That is to say, in the setting mode of using t...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem that the on-site leveling unit adopts the upper and lower flow rate setting methods for setting the leveling liquid, which causes differences in the extension, roughness, corrosion resistance and cleanliness of the upper and lower surfaces of the strip, the invention provides a Applicable to the optimization setting method of the leveling liquid flow difference in the wet leveling rolling process

Images