Method for detecting rolling force of racks of rolling mill controlled by computer in hot continuous rolling

Abstract

The invention discloses a method for detecting rolling force of racks of a rolling mill controlled by a computer in hot continuous rolling. The method comprises the following steps: rolling force in an oil pressure manner is obtained; rolling force detected by a pressure measuring head is input; a static deviation in different pressure measuring manners is detected; a dynamic deviation in different measuring manners is detected; a deviation of different kinds of PC angular rolling force is detected; and a deviation of oil pressure rolling force is compensated. Due to the fact that in a finite element model, the method takes site actual production process parameters as input values, the method is close to actual production environment and can really reflect changing situations of deformation resistance in continuous rolling of all the racks. According to the method, a deformation resistance model of a second-level system can be optimized; a corrected deformation resistance value is used for optimizing a rolling force set value; the preset precision of rolling force is improved; stability of the rolling process is ensured; and the product quality is improved. Through dynamic deviation compensation control and dynamic and static deviation comprehensive control, the online rolling force detecting and controlling technology is achieved.

Description

technical field [0001] The invention relates to a rolling force detection method in a hot continuous rolling process. Background technique [0002] Rolling force, also known as rolling pressure or rolling total pressure, is the force that the rolled piece acts on the roll and transmits to the stand during the rolling process of the rolled piece, that is, the vertical force of the reaction force applied by the rolled piece to the roll portion. In the rolling force control process of hot continuous rolling mills, combined with the characteristics of different rolling mills, different rolling force detection methods are generally used, including oil pressure detection methods and pressure measuring head detection methods, to meet the characteristics of hot continuous rolling production. requirements. Due to the use of different pressure measurement methods, combined with the different characteristics of the test itself, the test results will have certain deviations; once the ...

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Problems solved by technology

[0010] Although the above-mentioned four patent technologies involve the measurement of rolling force, none of them discloses the high-precision rolling force detection and control technology combining the hydraulic rolling force detection method and the dynamic rolling force compensation control method

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