A self-adaptive control method based on continuous casting thick slab to slab weight
An adaptive control and slab technology, which is applied in the field of automatic control of the continuous casting thick slab to the production process, can solve the problems of the influence of the yield index and the influence of the slab weight deviation that are difficult to consider and eliminate, and achieve the realization of the slab weight. The effect of self-adaption and improving the comprehensive yield of thick plates
Active Publication Date: 2022-04-29
BAOSTEEL ZHANJIANG IRON & STEEL CO LTD
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Problems solved by technology
Steelworks supply thick slabs to slabs with the goal of cutting theoretical dimensions. It is often difficult to consider the impact of slab cross-section differences on slab weight deviations. Therefore, the mother slab weight deviation fluctuates (slab weighing performance and Billet target weight difference) has a great impact on the yield index of the next process
The traditional slab weight management mode is to continuously improve the three-dimensional dimensional accuracy. In the actual production process, it is still difficult to eliminate the slab weight deviation fluctuation due to the influence of equipment, working conditions, and operating skills.
Method used
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[0040] Take the 53 billets whose CCNO is 4023291 as an example, the length before compensation = 9051mm, the length after supplementation = 8989mm, and the corrected length is 62mm.
[0041] Table 1: During December 2018, the hit rate of mother blanks increased significantly after being put into production, and the trend increased significantly, accompanied by more and more significant parameter adjustments, which increased to 65% from the scheduled 43.7% by dozens of percentage points.
[0042] Table 2: During December 2018, the average comprehensive finished product rate increased by 0.76% compared with the previous one, which was 0.41% higher than the scheduled increase of 0.35%.
[0043]
[0044] Table 1: Hit ratio of mother blanks after production during December 2018
[0045]
[0046] Table 2: Comprehensive yield after production in December 2018.
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This technology belongs to the field of automatic control of continuous casting thick slab to production process. At present, there is no relevant patent literature on thick slab to slab weight self-adaptation in the same industry. Through the research and development of the slab weight adaptive cutting model through the information system, the continuous casting machine slab weight self-adaption can be realized, which can effectively improve the comprehensive yield of thick slabs, form an industry-leading slab cutting precision technology, establish key parameter collection, and continuously improve Influence of online key parameter factors on slab weight.
Description
technical field [0001] The technology belongs to the field of automatic control of continuous casting thick plate to production process. Background technique [0002] When cutting slabs in continuous casting in steelmaking plants, the three-dimensional dimensions usually designed according to the plan, the system issues the command length value, and the thermal cutting machine performs a cut according to the plan requirements. Then it is sent to the next process according to the flow direction of the slab, including hot rolling, thick plate, etc. The continuous casting slab is used as the raw material entrance of the next process, and its cutting accuracy directly affects the feeding amount of the next process. According to the differences in settlement of end products, the sensitivity of each user point is different. The products of hot rolling line are mainly delivered by coil weight, which is relatively insensitive to the accuracy of slab weight. A large number of produc...
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IPC IPC(8): B22D11/16
CPCB22D11/163
Inventor 余洁斌李康国杨明显
Owner BAOSTEEL ZHANJIANG IRON & STEEL CO LTD