Emulsion Process Optimization Method Aiming at Fuel Consumption Control in Secondary Cold Rolling Mill

Abstract

The invention relates to an emulsified liquid process optimization method taking oil consumption control as a target by a secondary cold rolling unit. The method comprises the following steps executed by a computer; (A) collecting a primary equipment process parameter, a lubricating characteristic parameter and a frictional characteristic parameter of the secondary cold rolling unit; (B) collecting a preset process parameter of to-be-produced strip steel of the secondary cold rolling unit; (C) calculating a frictional coefficient target value [mu]t needed to reach a rolling pressure target value Pt; (D) calculating a deformation region oil film thickness target value xit needed to reach the frictional coefficient target value [mu]t; (E) calculating a separated out oil film thickness target value xipt needed to reach the deformation region oil film thickness target value xit; and (F) calculating the optimum combination (Qy and Cy) of flow and concentration f an emulsified liquid, wherein the secondary cold rolling unit meets the demand on the lubricating performance and the oil consumption is the minimum. By comprehensively optimizing concentration and flow of the emulsified liquid, the minimum consumption of rolling oil is achieved, and the field production cost of the secondary cold rolling unit and the sewage treatment cost of the emulsified liquid are lowered.

Description

technical field [0001] The invention belongs to the technical field of cold rolling, in particular to a method for optimizing an emulsion process in a secondary cold rolling process. Background technique [0002] The secondary cold rolling is to further reduce the strip steel after the primary cold rolling and annealing, so as to improve the hardness and strength of the material. In the production process of the secondary cold rolling line, the strip is rolled and pressed in the first stand to reduce the thickness of the strip to meet the thickness requirements of the product, and it is flattened in the second stand to achieve the shape of the strip. , Surface roughness control, to ensure the final product quality. On the inlet side of the first stand of the secondary cold rolling mill, the direct injection system is used to spray the surface of the strip with a certain flow and concentration of emulsion for rolling lubrication, and a special roll cooling spray device is ar...

AI Technical Summary

Problems solved by technology

The emulsion sprayed by the direct injection system of the secondary cold rolling unit will be discharged directly and will not be recycled. The emulsion has good lubricating performance and no miscellaneous oil or impurities. It is suitable for thin thickness, high strength and high surface quality requirements. At the same time, the consumption of rolling oil is relatively large, which increases the cost of cold-rolled strip production and sewage treatment

In the past, the setting of emulsion concentration and flow rate in the secondary cold rolling production process mainly considered the influence of its lubricating performance, and did not consider the control of the consumption index of rolling oil, which resulted in the condition of meeting the lubricating performance. , the concentration and flow control range of the emulsion is not accurate enough, resulting in the waste of rolling oil

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