Sectional contact type strip shape roller position error compensation method
A compensation method and roll position technology, applied in the direction of length measuring device, metal rolling, metal processing equipment, etc., can solve the problems of cold-rolled strip shape detection distortion, segmental contact shape roll position accuracy error, etc., to achieve To solve the effect of distortion
Active Publication Date: 2021-09-03
ZHANGJIAGANG YANGTZE RIVER COLD ROLLED PLATE CO LTD +2
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Problems solved by technology
[0005] The purpose of the present invention is to solve the problem of distortion of cold-rolled strip steel shape detection caused by the positional accuracy error of the segmented contact shape roll
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[0050] The technical solutions of the present invention will be clearly and completely described below through specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0051] Experimental debugging was carried out for a single-stand 1420 six-high rolling mill at a certain production site. The plate-shaped rolls used in this single frame are 26-section equal-width plate-shaped rolls, and the single-section width is 52mm, such as Figure 4 shown.
[0052] Specific rolling mill parameter values are given below. Among them, the diameter of the shape roll is 313mm, the diameter of the upper work roll is 250mm, the diameter of the steering roll is 400mm, the horizontal distance l between the ...
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The invention discloses a sectional contact type strip shape roller position error compensation method. Aiming at the adverse effect of a position error of a sectional contact type strip shape roller of a single-stand six-roller mill on strip shape detection, a strip shape roller wrap angle compensation model is established, and individual compensation control is performed on a wrap angle of each section of channel of the strip shape roller. The specific control process comprises the following steps of deducing and calculating a strip shape roller wrap angle formula; establishing a strip shape roller wrap angle compensation model according to the spatial position relationship between the strip shape roller and front and rear rollers, and writing the strip shape roller wrap angle compensation model into an electrical secondary program; measuring actual deviation values of levelness and parallelism of the strip shape roller, and calculating a wrap angle value corresponding to each section of channel of the strip shape roller according to the wrap angle compensation model; and substituting the wrap angle value into a flatness formula to obtain the actual strip shape value of each section of strip steel, and then achieving strip shape closed-loop control. According to the method, a traditional strip shape roller fixed wrap angle is changed into a strip shape roller variable wrap angle along the axial direction, so that the problem of strip shape detection distortion caused by the position error of the strip shape roller is solved.
Description
technical field [0001] The invention relates to the technical field of cold rolling strip shape control, in particular to a compensation method for the position error of segmented contact type flatness rolls. Background technique [0002] As an important evaluation index of cold-rolled strip steel, the shape quality affects the product quality of downstream enterprises such as home appliances, automobiles, and food packaging. Flatness detection is an important part of the flatness closed-loop control system, and the industry needs to put forward higher requirements for the level of flatness detection. Because the strip shape problem is essentially the lateral distribution of the internal residual stress of the strip. When the width of the strip extends unevenly to each fiber, since the strip is a whole, residual stress will be generated between adjacent fibers. When the residual stress exceeds the warping limit, it will cause the wave shape of the strip. Therefore, the ess...
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IPC IPC(8): B21B38/02
CPCB21B38/02
Inventor 张建雷岳重祥陈卫陆佳栋詹东方
Owner ZHANGJIAGANG YANGTZE RIVER COLD ROLLED PLATE CO LTD