Method for decreasing emulsion concentration of five-rack continuous-rolling unit rolling mill emulsion system

Abstract

The invention discloses a method for reducing the emulsification concentration of the rolling mill emulsion system of a five-stand continuous rolling mill. The method includes: transforming the existing five-stand continuous rolling mill mill emulsion system, between No. 1 emulsion tank, No. 2 emulsion tank and No. 3 emulsion tank of the five-stand continuous rolling mill emulsion system In the production process, the low-concentration emulsion in the No. 3 emulsion tank is realized by adding rolling oil, and the desalted water that meets the preset temperature requirements is prepared in the No. 2 emulsion tank; The concentration difference between the pump group of the system and the high-concentration and low-concentration emulsion directly realizes the channeling between the emulsion tanks and realizes the change of the emulsion concentration. The method can effectively save the amount of compressed air, and the operation is convenient, and the emulsion does not need to be discharged, which saves the cost.

Description

technical field [0001] The invention relates to the technical field of cold rolling in the field of iron and steel metallurgy, in particular to a method for reducing the emulsification concentration of a rolling mill emulsion system of a five-stand continuous rolling mill. Background technique [0002] In the metal rolling process, the use of technological lubrication can effectively reduce friction, reduce rolling pressure, control wear and improve the surface quality of rolled materials. In the process of steel production, after lubricated by rolling process, energy consumption per ton of steel can be reduced by 5% to 10%, metal loss can be reduced by 15% to 20%, surface defect rate can be reduced by 30% to 50%, and yield can be increased 0.5% to 1.0%. For this reason, a large number of emulsions are used as industrial lubricants in the cold rolling production process. In the actual production process, the emulsion is required to have good lubricating performance, excelle...

AI Technical Summary

Problems solved by technology

[0006] In the actual production process of cold rolling, due to the fast rolling speed, a large amount of high-concentration emulsion enters the No. 3 emulsion tank along the rolling direction, resulting in an increase in the concentration of the No. 3 emulsion tank, thereby reducing the cleaning performance of the steel plate

Images