Emulsified liquid process optimization method taking oil consumption control as target by secondary cold rolling unit

A technology of secondary cold rolling and process optimization, applied in the direction of rolling mill control devices, metal rolling, manufacturing tools, etc., can solve the problem of large consumption of rolling oil, waste of rolling oil, increased production of cold-rolled strip steel and sewage treatment cost and other issues to achieve the effect of reducing on-site production costs and minimizing consumption

Inactive Publication Date: 2017-12-29
唐山格诺金属科技有限公司
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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

Method used

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  • Emulsified liquid process optimization method taking oil consumption control as target by secondary cold rolling unit
  • Emulsified liquid process optimization method taking oil consumption control as target by secondary cold rolling unit
  • Emulsified liquid process optimization method taking oil consumption control as target by secondary cold rolling unit

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Embodiment 1

[0034] Taking a secondary cold rolling unit as an example, according to figure 1 The overall calculation flow chart of the emulsion process optimization method for the secondary cold-rolling unit with oil consumption control as the goal is shown. First, in step (A), the main equipment process parameters, lubrication characteristic parameters, friction Characteristic parameters, including: work roll radius R=170mm, work roll elastic modulus E=210GPa, work roll Poisson’s ratio ν=0.3, distance from emulsion nozzle to mill roll gap L=0.5m, rolling oil dynamic viscosity η 0 =0.02Pa·s, pressure viscosity coefficient θ=0.01MPa -1 , Emulsion concentration precipitation efficiency time influence coefficient λ t =487.5, concentration influence coefficient λ of emulsion concentration, precipitation efficiency C =1.936、Emulsion flow residual efficiency time influence coefficient δ t =19.35, emulsion flow residual efficiency flow influence coefficient δ Q =0.491, liquid lubrication fri...

Embodiment 2

[0061] First, in step (A), the main equipment process parameters, lubrication characteristic parameters, and friction characteristic parameters of the secondary cold rolling unit are collected, including: work roll radius R=170mm, work roll elastic modulus E=210GPa, work roll Poisson Ratio ν=0.3, distance from emulsion nozzle to rolling mill gap L=0.5m, dynamic viscosity of rolling oil η 0 =0.02Pa·s, pressure viscosity coefficient θ=0.01MPa -1 , Emulsion concentration precipitation efficiency time influence coefficient λ t =526.3, concentration influence coefficient λ of emulsion concentration, precipitation efficiency C =2.142、Emulsion flow residual efficiency time influence coefficient δ t =21.62, emulsion flow residual efficiency flow influence coefficient δ Q =0.533, liquid lubrication friction coefficient a=0.0112, boundary lubrication friction coefficient b=0.1256, friction coefficient attenuation index B ξ =-6.582.

[0062] Subsequently, in step (B), the preset pro...

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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, and in particular relates to an optimization method of an emulsion process in a secondary cold rolling process. Background technique [0002] The secondary cold rolling is to further reduce the thickness of the strip 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 unit, the strip steel is rolled and pressed in the first stand to realize the thickness reduction of the strip steel to meet the thickness requirements of the product, and the flattening is carried out in the second stand to realize the shape of the strip steel plate. , Surface roughness control to ensure the final product quality. The entrance side of the first stand of the secondary cold rolling unit uses a direct injection system to spray a certain flow and concentration of emulsion on the surface of the strip for r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B37/00B21B45/02
CPCB21B37/00B21B45/0239B21B2037/002Y02P70/10
Inventor 白振华李秀军崔亚亚崔熙颖蒋青林姜明光
Owner 唐山格诺金属科技有限公司
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