Calender control device, calender control method, and computer
A technology for control devices and calenders, which is applied in the direction of rolling mill control devices, length measuring devices, rolling force/roll gap control, etc., and can solve the problems of reduced operating efficiency, increased detector maintenance workload, and increased equipment investment, etc. problem, to achieve the effect of simple structure
Active Publication Date: 2020-01-17
HITACHI LTD
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Problems solved by technology
However, in this control method, since a detector that detects one rotation of the calender roll is required, it leads to an increase in investment in equipment and an increase in maintenance work for the detector.
In addition, in order to obtain the roll eccentricity component according to the load fluctuation, it is necessary to idle the roll, resulting in a decrease in work efficiency
Method used
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[0067] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In addition, the same code|symbol is attached|subjected to the common structural element in each drawing, and the overlapping description is abbreviate|omitted.
[0068] figure 1 It is a diagram showing an example of an overall configuration of a rolling machine control device 100 and a rolling facility including the rolling machine control device 100 according to an embodiment of the present invention. like figure 1 As shown, the rolling equipment is composed of the following components, etc.: a calender 1, which rolls the rolled material 2; an input side tension reel (tension reel) 3a, which rolls the rolled material 2 into a spiral shape. machine 1; output side tension reel 3b, which coils the rolled material 2 after rolling; and calender control device 100, which controls the above-mentioned equipment.
[0069] In addition, in this specification, a tensio...
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The invention relates to a calender control device, a calender control method and a computer. The object of the present invention is to remove periodic fluctuations, such as periodic plate thickness fluctuations, which occur in a rolled material with a simple structure. The roll eccentricity control device (17) includes: a filter unit that performs a test on the output side of the rolled material (2) detected by the output side plate thickness gauge (5) at a frequency corresponding to the rotation period of the roll of the rolling machine (1). The plate thickness deviation is filtered, and the result is stored in the filter table (121) corresponding to the roll angle (phase); the correction part integrates or proportionally integrates the filtered output side plate thickness deviation, and makes The result is stored in the deviation correction table (122) corresponding to the roll angle; The value of the table (121) and the deviation correction table is used to calculate the roll gap amount output to the roll gap control device (6).
Description
technical field [0001] The present invention relates to a calender control device, a calender control method, and a computer for controlling a calender of a metal plate. Background technique [0002] In a calender, which is a plant for efficiently producing thin metal materials, fluctuations in sheet thickness on the exit side occur due to fluctuations in the radius of the calender rolls in the rotational direction (hereinafter abbreviated as roll eccentricity). Since the thickness fluctuation caused by such roll eccentricity becomes a periodic thickness fluctuation depending on the rotation period of the rolling roll, the output side thickness is filtered by the roll eccentricity frequency component, and the roll is adjusted according to the roll eccentricity component. By operating the roll gap, the plate thickness variation can be weakened (see Patent Document 1, etc.). In addition, periodic external disturbances other than the frequency components caused by the rolling ...
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IPC IPC(8): B21B37/00
CPCB21B37/00B21B37/66B21B38/04
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Owner HITACHI LTD