Multifunctional automatic final pouring system of continuous casting machine and process control method

Abstract

The invention relates to a multifunctional automatic final pouring system of a continuous casting machine and a process control method, and belongs to the field of continuous casting machine equipment and process control. According to the multifunctional automatic final pouring system, a final pouring manner selecting module connected with an automatic final pouring computing control unit is arranged, and a tundish tonnage modification setting module is additionally arranged between the automatic final pouring computing control unit and a tundish weighing information unit; through configuration of related equipment and adjustment of the process control method, the automatic final pouring system of the continuous casting machine is suitable for three working conditions including tundish replacement, different steel type iron plate insertion and final pouring, manual intervention of operation personnel is reduced, the automatic pouring degree is improved, and the tail blank quality control capacity in the final pouring process is improved; and the continuous casting final pouring process is comprehensively combined with the production process, operation, quality control and accident prevention, the input rate of the automatic final pouring system can be greatly improved, and the casting blank quality and the abnormal prevention and control capacity in various final pouring processes are improved. The multifunctional automatic final pouring system can be widely applied to the field of design, manufacturing and production process control of the continuous casting machine equipment.

Description

technical field [0001] The invention belongs to the field of continuous casting machine equipment and process control, and in particular relates to a tundish automatic final casting control device and production process for realizing continuous casting production process. Background technique [0002] At present, many advanced continuous casting machines at home and abroad are equipped with automatic final pouring systems and corresponding control functions. These functions are imported from some famous foreign continuous casting design companies, but these automatic final pouring systems have many shortcomings. As a result, the application rate of the automatic final pouring system is very low, and manual operation not only increases the labor intensity of the operator, cannot realize automatic production, but also easily leads to various operational errors, resulting in quality problems such as slag inclusions and inclusions in the slab or even Causing surge and other oper...

AI Technical Summary

Problems solved by technology

But in fact, the automatic final pouring system can be used only once;

[0018] Secondly, the existing automatic final pouring system only calculates the starting point of the final pouring according to the current casting speed and section, and performs automatic speed reduction, which does not support the solution of the sudden change of the actual tonnage in the middle

In fact, during the final pouring process, the molten steel inside the tundish will also solidify to varying degrees after the superheat of the molten steel decreases at the end of the pouring stage, which will cause a discrepancy between the residual steel tonnage of the tundish displayed by the weighing system and the actual molten steel tonnage. If there is a large deviation, the operator often adopts the method of manually reducing the speed due to sudden changes and cannot change the system, which leads to the failure of the system, and in severe cases, a "slag" accident is caused;

[0019] Third, although these systems are called "automatic final pouring" in name, many auxiliary operations still need to be controlled manually on site, such as argon gas needs to be manually adjusted in time, the holding time before final pouring needs to be manually controlled, final pouring The pulling operation requires manual operation, and the speed-up operation after the final pouring requires manual control, etc. Therefore, the use of the system is still inseparable from people, and it is impossible to truly realize automatic and unmanned pouring;

[0020] Fourth, with the development of continuous casting equipment technology and process technology, many control technologies related to final casting have not been integrated into the automatic final casting system. In actual control, such as argon control model, mold cooling model, multiple Rate deceleration control, etc. These process models have been proved to have a great relationship with the quality control and accident prevention in the continuous casting final pouring operation. If these models cannot be linked with the relevant nodes of the automatic final pouring system, manual participation in the operation will inevitably be required, and it will inevitably lead to Manual errors and omissions

[0021] The above problems have led to the incompatibility and low utilization rate of the existing automatic final pouring system. How to improve the commissioning rate of the automatic final pouring system and reduce the degree of manual participation as much as possible so that it can truly realize automatic final pouring Problems to be Solved Urgently in the Process of Actual Production Control

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