Tension Control Method of Long-line Units in Idling Section
A technology of tension control and dry running, applied in the direction of tension/pressure control, etc., can solve the problems affecting the production efficiency of the whole line, stable quality, increase equipment maintenance costs, slippage of the roll surface and the steel belt, etc., to reduce the scratches on the strip surface. The effect of reducing damage, reducing equipment maintenance costs, and reducing surface wear
Active Publication Date: 2021-04-13
SHANXI TAIGANG STAINLESS STEEL CO LTD
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Problems solved by technology
[0010] The tension in the empty running section fluctuates due to the increase in speed, and the tension fluctuations of different widths and thicknesses of the strip steel are different. Surface wear and strip scratches will affect the production efficiency and quality stability of the whole line, and increase equipment maintenance costs
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[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. 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 making creative efforts fall within the protection scope of the present invention.
[0025] The technical solutions provided by the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0026] In order to solve the problem of tension fluctuation in the high-speed operation of the idle section of the long-line unit and reduce scratches on the strip steel and wear on the surface of ...
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Abstract
The invention discloses a method for controlling the tension of the empty running section. The method includes: using a speed compensation factor to compensate the given speed of the B group of tension rollers located behind the empty running section: V Bref '=μ×V Bref ; where, V Bref 'is the given speed after compensation of group B tension roller, V Bref is the initial given speed of the B group tension roller, μ is the speed compensation factor, and its value is related to the width of the strip, the thickness of the strip and the running speed of the idle section. The tension control method of the empty running section of the present invention compensates the given speed of the group B tension rollers located behind the empty running section, and then controls the speed difference of the tension rollers to indirectly control the tension of the empty running section, thereby improving the tension stability of the empty running section It reduces the friction and scratches on the surface of the steel strip caused by the slippage of the tension roller; in addition, it reduces the surface wear of the tension roller, prolongs the service life of the tension roller, and reduces equipment maintenance costs.
Description
technical field [0001] The invention relates to the technical field of strip steel rolling equipment, in particular to a tension control method for an idle section of a long-line unit. Background technique [0002] as attached figure 1 As shown, the empty running section is in the middle area of the annealing and pickling line and other long-line units. The tension in the process area before and after the running section is stable, and the front and rear process areas are controlled by closed loop, so that the process tension reaches the set value and remains stable. Compared with the front and rear process areas, the tension in the empty running section has no strict requirements, so the tension control in the empty running section does not form a closed loop, and the control method is relatively simple. The tension in the empty running section is obtained by the following calculation process: [0003] V A =V Aref -k A × T 1 × R A , V B =V Bref +k B × T 2 × R ...
Claims
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IPC IPC(8): B21B37/48
CPCB21B37/48
Inventor 何凯任巍徐立苏智韩新建张华高猛
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD