A Method for Predicting Oil Film Thickness on Roller Surface in Secondary Cold Rolling Process

Abstract

The invention provides a method for predicting the thickness of the oil film on the surface of the roll in the secondary cold rolling process, which comprises the following steps: S1, constructing a prediction model for the thickness of the oil film on the surface of the roll in the secondary cold rolling process; S2, using the Powell optimization algorithm to calculate the thickness of the oil film on the surface of the roll The optimal value of the influence coefficient; S3, the λ ay , lambda by , lambda cy , lambda dy , lambda ey Substituting the prediction model constructed in step S1 to obtain the optimal prediction model for the thickness of the oil film on the surface of the roll in the secondary cold rolling process; S4, collecting the pre-set lubrication process parameters of the rolls of the secondary cold rolling group; S5, predicting according to the model in step S3 Thickness of oil film on the entrance and exit surface of the secondary cold rolling work roll ξ w0 , ξ w1 , oil film thickness ξ on the surface of the intermediate roll inlet and outlet m0 , ξ m1 , Oil film thickness ξ on the inlet and outlet surfaces of the support roll b0 , ξ b1 . The application can predict the oil film thickness of the roll surface in the rolling deformation zone of the corresponding secondary cold rolling unit, control and improve the lubrication performance of the rolling process of the secondary cold rolling unit, reduce production costs, and improve enterprise benefits.

Description

technical field [0001] The invention belongs to the technical field of cold rolling, in particular to a method for predicting the thickness of an oil film on the surface of a roll in a secondary cold rolling process. Background technique [0002] In recent years, with the increasingly fierce market competition in the iron and steel industry, tin-plated and chrome-plated strip products are developing in the direction of high strength and thinning. The secondary cold-rolling process is to cold-roll the strip after cold-rolling and annealing again, so as to increase the strength and reduce the thickness of the strip, and better adapt to the development direction of tinplate and strip products, so it has achieved rapid development. At the same time, in the secondary cold rolling production process, in order to reduce the rolling pressure and rolling power and improve the surface quality of the strip, it is generally necessary to use a direct injection system to lubricate the str...

AI Technical Summary

Problems solved by technology

In the past, the field research on the lubricating oil film thickness in the secondary cold rolling deformation zone mainly focused on the research on the oil film thickness on the strip surface, while the research on the lubricating oil film thickness model on the roll surface was less, lacking quantitative model analysis

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