A Method for Eliminating Skidding of Tension Rollers
A technology of tension roller group and tension roller, applied in the direction of tension/pressure control, contour control, etc., can solve problems such as tension roller slippage, achieve the effect of eliminating slippage, solving scratches, and improving yield
Active Publication Date: 2021-06-18
鞍钢冷轧钢板(莆田)有限公司
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Problems solved by technology
[0003] The invention provides a method for eliminating the slippage of the tension roller group, solves the problem of the tension roller slippage, reduces the consumption of the tension roller, and improves the surface quality of the strip steel at the same time
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[0023] The specific embodiment of the present invention will be further described below in conjunction with embodiment:
[0024] A method for eliminating the slippage of tension rollers, comprising the following methods:
[0025] 1) The adjustment range of the tension setting value at the entrance and exit of the tension roller is 15-20KN. By reducing the sliding coefficient of the tension roller, the tension roller is controlled not to slip. The calculation formula of the sliding coefficient of the tension roller is shown in formula (1):
[0026] Slip factor calculation:
[0027] In formula (1): a: sliding coefficient; n: number of tension rollers;
[0028] TE: roller exit tension value; TS: roller entry tension value;
[0029] f: coefficient of friction; ∑R: sum of wrap angles;
[0030] Coefficient judgment: when a<0.1, the tension roller is used under control; when 0.2≤a≤0.7, the tension roller is in normal use; when 0.8≤a≤1, there is slippage and needs to be adjusted;...
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A method for eliminating the slippage of the tension roller group, including the following method: the adjustment range of the tension roller entrance and exit tension is 15-20KN, and the tension roller is controlled not to slip by reducing the slip coefficient of the tension roller; the communication content sent by the PLC to the transmission The upper and lower limits of the torque are added, and the upper and lower limits of the torque are ±110NM; the linear adjustment method with the looper tension setting as the coefficient is adopted; when the inspection table loses tension at the exit section, the PID adjustment is performed with the inspection table tension setting as the coefficient; Adjusting the surface roughness of the tension roller to 4.0≤Ra≤4.5 can not only ensure that the roller has a sufficient friction coefficient, but also not affect the surface finish of the strip. The invention provides a method for eliminating the slippage of the tension roller group. By modifying the relevant parameters and adding the relevant control program, the slipping phenomenon of the tension roller group is completely solved, the slipping phenomenon between the strip steel and the rollers is avoided, and the scratches on the surface of the strip steel are solved. , Increase the finished product rate by 0.8%.
Description
technical field [0001] The invention belongs to the field of tension roller transmission equipment of a hot-dip galvanizing unit, and in particular relates to a method for eliminating slippage of a tension roller group. Background technique [0002] The exit tension roller set is the tension roller controlled at the exit section of the hot-dip galvanizing unit. After the tail part coiling is stopped, the two tension rollers will slip at the moment of starting up, causing scratches on the entire strip surface, which seriously affects the strip. Steel surface quality, through tracking and understanding of the process, observing production phenomena, optimizing program control, modifying the upper and lower limit parameters of the program, modifying the on-site tension control, and completely eliminating the slipping phenomenon of the tension roller group. Contents of the invention [0003] The invention provides a method for eliminating the slippage of the tension roller gro...
Claims
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IPC IPC(8): B21B37/48B21B37/28
CPCB21B37/28B21B37/48
Inventor 刘灿红赵林黄小旺刘建煌蔡庆鹏荣丰伟
Owner 鞍钢冷轧钢板(莆田)有限公司