Method for detecting rolling forces during medium plate rolling process

Abstract

The invention relates to a method for detecting rolling forces during a medium plate rolling process. The method comprises confirming work roll contact signals through manual operation, and confirming that a roll gap calibration is adjusted to be zero; sampling the instantaneous voltage and current of a motor, calculating the power made by the motor in a rolling process through a formula W=U*I*t, and expressing a output torque of the motor with T / , wherein T / =W; filtering the output torque T of the motor, and determining effective work T on the basis that rolling torque effective rolling work T=motor output torque T / -motor rated torque*3%; and calculating the value of a rolling force F through a formula T=2F*B*Arc, wherein the b is a horizontal force arm rate, and the Arc is a contact arc length. According to the method, the value of the rolling force is mapped through observation of the instantaneous voltage and current and calculation of the rolling force arm, the purpose of indirect measurement of the rolling force is achieved, the purchasing expense of a large number of check elements is saved, the measurement range is improved, and the production continuity is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of hot-rolled steel strip production technology in the metallurgical industry, and in particular relates to a method for detecting rolling force during the rolling process of a medium-thick plate. Background technique [0002] The detection link of rolling force in the plate rolling process is the key to the whole process, and the automatic pressing and automatic rolling involved in the basic automation require rolling force detection. At the same time, the self-adaptation of the rolling schedule involved in the process automation also requires the detection and feedback of the rolling force. [0003] At present, for the direct detection method of rolling force, the detection method based on Hooke's law is adopted. According to Hooke's law, within the elastic deformation range of the material, the force and the deformation are proportional, that is, △F=K×△X. In addition, for another detection method of for...

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Problems solved by technology

This puts forward quite high requirements on the yield stress of the material used in the detection element. Once the detection element works within the range of plastic deformation, the detection element will be damaged and cannot be recovered. After the damage, the domestic detection and foreign maintenance will require a long maintenance period. , which seriously restricts the rolling production

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