Molten steel quantity conversion based slab cutting optimization method and control system thereof

Abstract

The invention discloses a molten steel quantity conversion based slab cutting optimization method and a control system thereof and relates to a control device or method special for metal rolling machines or other machining products, in particular to an optimization method for continuous casting production line slab cutting and a control system thereof. A production casting plan and a slab cutting instruction are received from a production and management system, basic slab cutting data is acquired, and actual cutting performance feedback is received at basic automation level; a calculation casting length is determined according to conversion casting length and strand casting length, a calculate cutting range is corrected by combining with an actual cutting performance feedback value, cutting optimization calculation is performed according to a cutting instruction length range to generate an optimal cutting scheme for cutting setting, and slab cutting is controller. Based on cutting prediction of molten steel quantities in large ladles and middle ladles, the calculated cutting range is widened, the predicted calculation block number of slab cutting is increased, the cutting calculation range and precision are improved, smooth and stable production logistics is guaranteed, and tail molten steel quantity waste is reduced.

Description

technical field [0001] The invention relates to a control device or method for post-processing or post-processing process of casting blanks on the spot of metal continuous casting, in particular to an optimization method and control system for continuous casting production line slab cutting. Background technique [0002] In the continuous casting production process, slab cutting is an important part. Because it not only affects the production yield, but also plays a vital role in indicators such as the contract decoupling rate. If the cutting is inappropriate, it will not only cause a lot of waste of high-quality molten steel, but also may affect the subsequent production logistics. Continuous casting production process such as figure 1 As shown, the existing slab cutting method usually only calculates the cutting length cutting for the molten steel in the area of ​​the strand 4 after the mold 3, and does not take into account the molten steel in the ladle 1 and tundish 2....

AI Technical Summary

Problems solved by technology

Especially when there are quality abnormalities in the casting strand, it is often necessary to cut these abnormalities separately or together with the head and tail of the normal slab through the slab cutting calculation, instead of attaching the abnormality to the middle of the slab for cutting, resulting in Whole slab waste

And the existing slab cutting method is the slab target long cutting method, such as image 3 As shown, there is a lack of pre-judgment and optimization of the cutting length, but the slab cutting command is directly received from the production management system L3, and the cutting is performed directly according to the cutting command length (target length) without optimization calculation, so that the slab cutting In the later stage, the amount of molten steel remaining is limited and cannot be adjusted. In the end, the remaining high-quality molten steel at the tail cannot be cut into a normal slab, but can only be cut and scrapped together with the amount of molten steel with abnormal quality, resulting in a waste of molten steel

At the same time, the existing mode of operation has also caused uncoordinated logistics organization within the cutting range

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