Continuous casting soft press thickness measuring roller arranging and controlling method

Abstract

The invention relates to a continuous casting soft press thickness measuring roller arranging and controlling method. Thickness measuring rollers are arranged at the front ends of all soft press executing rollers and optimally arranged on the fan-shaped section. The thickness measuring rollers comprise a thickness measuring roller A and a thickness measuring roller B. The thickness measuring roller A is arranged before the thickness measuring roller B. When cast blank production reaches the stable state, a displacement sensor of the thickness measuring roller A compares a cast blank thickness measuring value within a period of time with a real-time value of a displacement sensor of the thickness measuring roller B, the thickness of a cast blank is determined, the thickness of the cast blank is corrected through a displacement control mode of the thickness measuring roller B, the thickness of the cast blank in the production process of whole casting is a constant value, and the prerequisite condition is provided for stable execution of the soft press technology.

Description

technical field [0001] The invention relates to the technical field of continuous casting soft reduction, and more specifically relates to a continuous casting soft reduction thickness measuring roller and a control method. Background technique [0002] The continuous casting of special steel has very high quality requirements for the continuous casting slab. The use of continuous casting light reduction plays a certain role in improving the center segregation and center porosity of the continuous casting slab, especially for the production of continuous casting slabs with large cross-section specifications. Light pressing has been regarded as one of the essential processes. The problem existing in the application of continuous casting soft reduction technology is that there will be deviations in the execution of the soft reduction process, which is mainly reflected in the inconsistency of the size of the billet of different steel types, and the difficulty of adjusting the t...

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Problems solved by technology

The problem existing in the application of continuous casting soft reduction technology is that there will be deviations in the execution of the soft reduction process, which is mainly reflected in the inconsistency of the size of the billet of different steel types, and the difficulty of adjusting the thickness of the billet before entering the soft reduction due to the bulging of the billet. Take accurate measurements and cannot judge the results of the measurements

[0003] The patent application of Chinese Patent Publication No. CN102343426 A (announcement date is February 8, 2012, titled online fault judgment and early warning of displacement sensor under dynamic light pressure) discloses an online fault judgment and early warning method of displacement sensor under light pressure. The roll gap control system PLCS7-400 in the central system of the continuous casting machine is used for calculation and judgment. By presetting the judgment conditions in advance, the roll gap control system PLCS7-400 is used to judge the fault status of the displacement sensor and send the signal to Measures were taken by the segment actuators. This method realizes the online fault judgment of the displacement sensor through PLCS7-400 calculation, which improves the control level. However, this scheme involves a high degree of automation, the system is relatively complicated, and the actual verification process of the roll gap is lacking. , and the thickness of the slab cannot be corrected, which is insufficient to ensure the implementation of light reduction

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