Continuous casting billet cutting control method and system, and application

Abstract

The invention provides a continuous casting billet cutting control method and system, and an application. The method comprises steps that a set value of a cut billet is obtained, and the target size of the cut billet is obtained according to the set value; when that the billet reaches the target size of the cut billet is detected by an infrared sizing device, a fire cutting machine is controlled for performing cutting; after the billet stops at a roller scale, actual weight data of the current cut billet weighed by the roller scale based on RS485 to DP is obtained; weight difference between the actual weight data weighed by the roller scale and the target weight is calculated, and the target size of the cut billet is corrected. The method is advantaged in that accuracy of the difference between the actual weight data of the current cut billet and the target weight can be effectively ensured, effectiveness of target size correction of the cut billet is ensured, the cutting error is reduced, and cutting accuracy is improved.

Description

technical field [0001] The present application relates to the technical field of continuous casting, in particular to a continuous casting slab cutting control method, control system and application. Background technique [0002] The continuous casting machine is the equipment used to continuously cast high-temperature molten steel into billets with a certain cross-sectional shape and a certain size specification. It usually includes steel casting equipment, continuous casting machine body equipment, cutting equipment, dummy ingot device and conveying equipment . Among them, the cutting equipment is used to complete the cutting of the casting slab according to the requirements of the size and weight specification of the slab. [0003] At present, in the existing cutting equipment, due to the uncertain error of the slab cutting system and the change of the actual meter weight of the slab during the continuous pouring process, the slab size and weight errors are constantly fl...

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Problems solved by technology

[0004] However, the currently used sizing and weighing control system usually installs an online roller scale on the roller table at the back of the slab, weighs each slab after cutting in real time, and uploads the current weighed slab weight information to The PLC and the sizing control system compare with the target length and weight. When the deviation of the cut slab exceeds the preset deviation value, an alarm is issued, and then the manual size adjustment of the slab and the manual correction of the cutting equipment are assisted. The key points Most of them focus on automatic feedback, manual correction, intervention and early warning. Although the cutting accuracy is guaranteed to a certain extent, the error generated is still higher than 100Kg and the degree of automation is low.

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