A Method for Predicting the Dynamic Throwing Amount of Strip Steel

Abstract

The invention relates to a predication method for a dynamic tail-escaping amount of strip steel. The method is characterized by comprising the following steps: (1) collecting strip shape flatness data of section measuring points of the strip steel in a width direction and data information of the distance away from a strip steel head corresponding each set of the data, and forming a data file with a text format; (2) carrying out effective data extraction on each independent strip steel strip shape data file and carrying out meshing distributed processing; (3) fitting a partial waveform of the strip steel and formulating a judgment standard; (4) carrying out wave shape judgment on certain length data of the tail part of the strip steel section by section and combining a wave shape severe degree to judge whether tail escaping is needed or not; and (5) carrying out process correction on a predicated length and correcting an undersize tail-escaping amount in tail-escaping amount predication according to a minimum cutting length requirement of the process. According to the method, the tail-escaping amount of the strip steel of an application set is reduced and the yield of the application set is improved; a production accident is prevented from occurring; the method is simple and easy to operate.

Description

technical field [0001] The invention relates to a method for forecasting the tailing amount, in particular to a method for forecasting the dynamic tailing amount of strip steel, and belongs to the technical field of metallurgical production control. Background technique [0002] In the cold-rolled strip production line, it is very necessary to cut the head and tail of the strip to a certain length, because the head and tail of the strip often have various wave shapes. If the cutting is light, the strip will deviate or escape, and if it is serious, there may be failures such as strip breakage and equipment damage. Accidents of deviation and broken belts in the furnace occur from time to time. After investigation, it is found that the current cold-rolled strip steel manufacturers generally set a fixed value for the head and tail shear lengths of the strip steel based on experience. This often leads to two problems: one is when the wave shape of the strip steel is weak It cau...

AI Technical Summary

Problems solved by technology

After investigation, it is found that the current cold-rolled strip steel manufacturers generally set a fixed value for the head and tail shear lengths of the strip steel based on experience. This often leads to two problems: one is when the wave shape of the strip steel is weak Causes more shearing, resulting in unnecessary waste; second, when the wave shape of the strip steel is severe, there will be less shearing, and it is difficult to avoid production failures caused by the wave shape of the strip steel

[0003] At present, there is no technology at home and abroad that uses the flatness data provided by the feeding unit to determine the strip steel wave shape of the downstream unit and predict the dynamic tailing amount forecast, especially the dynamic strip tailing amount prediction method, "Baosteel High-speed Strip Multiple "Functional On-line Detection System" realizes the functions of hole, edge crack detection and width measurement of high-speed strip steel in harsh environments, and solves the problem of online detection of holes and edge crack defects in strip steel at the exit of the rolling mill, and the technical principle of its realization is Optical image recognition technology, similar to license plate number recognition technology

However, "Study on Secondary Detection and Rapid Judgment Method for Surface Defects of Cold-rolled Strip Steel" is the technical principle realized by "Baosteel High-speed Strip Steel Multifunctional Online Inspection System".

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