Method and device for obtaining cold rolling temper rolling pressure

Abstract

The invention is applicable to the technical field of cold rolling temper mills and provides a method and device for obtaining the cold rolling temper rolling pressure. The method includes the first step of dividing a roll gap deformation zone into five regions and establishing expression models of unit rolling pressure, horizontal stress and friction stress in all the regions, the second step of calculating the roll elastic flattening rate according to distribution of the unit rolling pressure and establishing a deformed roll contour curve model, the third step of moving a roll upwards and determining an outlet position and an inlet position of a rolled piece through a bisection method, the fourth step of judging whether a neutral region and a forward slip region exist and correspondingly calculating the unit rolling pressure of each region, and the fifth step of conducting repeated iterative calculation through the unit rolling pressure expression models and the deformed roll contour curve model to obtain the rolling pressure. The calculation result obtained through the method is consistent with a field measurement value, the method is applicable to off-line calculation and analysis of the cold rolling temper rolling pressure, the calculation result can be used as bases for making the temper rolling process, checking strength of the roll, a rack and other main parts and components, selecting the capacity of a motor and checking the load of the motor.

Description

technical field [0001] The invention belongs to the technical field of cold-rolling tempering mills, and in particular relates to a method and a device for obtaining cold-rolling tempering rolling pressure. Background technique [0002] Rolling pressure is one of the most important process parameters of cold rolling temper mill, and it is the basic basis for formulating temper rolling process, checking the strength of main parts such as rolls and racks, selecting motor capacity and checking motor load. At present, there is no mature cold-rolling tempering rolling pressure model that can be used for off-line calculation and analysis in China, which leads to the selection of rolling force and energy parameters in the design of cold-rolling tempering mills. A more accurate evaluation through a mathematical model often results in unnecessary waste, such as excessive selection of the section of the archway and the power of the transmission motor. [0003] Compared with general c...

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Problems solved by technology

[0006] In view of the above problems, the object of the present invention is to provide a method and device for obtaining tempering rolling pressure of cold rolling, aiming at solving the problem that existing cold rolling tempering rolling pressure cannot be obtained by experience or referring to data of similar units, which cannot be obtained through mathematical models. Technical issues for more accurate assessment

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