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A hot-rolled coiling pinch roll pressure leveling device and control method

A control method and technology of pinch rolls, applied in the direction of tension/pressure control, etc., to achieve the effect of prolonging the replacement cycle, increasing the machine-hour output, and improving the quality of hot-rolled products

Active Publication Date: 2016-04-20
SHOUGANG JINGTANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method that solves the tower shape and steps of the outer ring caused by the large deviation of the pinch roll gap, improves the quality of hot-rolled products, and prolongs the life of the pinch roll due to the deviation of the pinch roll. Hot-rolled coiling pinch roll pressure leveling device and control method with replacement cycle and improved machine-hour output

Method used

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  • A hot-rolled coiling pinch roll pressure leveling device and control method
  • A hot-rolled coiling pinch roll pressure leveling device and control method

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Experimental program
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Effect test

Embodiment 1

[0018] see figure 2 , when the pinch roll OS side roll gap deviates. According to the deviation, the operator sets the pressure judgment through the programmable logic control unit. Since the second-level setting is solidified into the second-level automation control and cannot be modified casually, the first-level HMI setting can be adjusted at any time. When the second-level setting is unreasonable, the operator can choose the first-level setting and input experience values. . According to the pressure judgment result, select the pressure setting. Prioritize HMI screen input, select HMI. According to the actual situation, the operator needs to increase the pressure on the HMI screen input OS side. Set the pressure leveling function. Depending on the pressure setting, the setting needs to increase / decrease the pressure. According to the set pressure leveling function and the pressure that needs to be increased / decreased, the pressure setting on the operating side is in...

Embodiment 2

[0020] see figure 2 , when the pinch roll DS side roll gap deviates. According to the deviation, the operator sets the pressure judgment through the programmable logic control unit. Since the second-level setting is solidified into the second-level automation control and cannot be modified casually, the first-level HMI setting can be adjusted at any time. When the second-level setting is unreasonable, the operator can choose the first-level setting and input experience values. . According to the pressure judgment result, select the pressure setting. Prioritize HMI screen input, select HMI. According to the actual situation, the operator inputs the increased pressure on the DS side on the HMI screen. Set the pressure leveling function. Depending on the pressure setting, the setting needs to increase / decrease the pressure. According to the set pressure leveling function and the pressure that needs to be increased / decreased, the pressure setting on the operating side is in...

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Abstract

The invention discloses a pressure leveling device and a pressure leveling control method for hot-rolling coiling pinch rolls and belongs to the field of hot continuous rolling control techniques. The pressure leveling control method includes: setting pressure judgment; according to pressure judgment results, judging pressure setting; setting a pressure leveling function; according to the pressure setting, setting pressure to be increased or decreased; according to the set pressure leveling function and the pressure to be increased or decreased, setting operating side pressure increased or decreased on the basis of original setting; according to the operating side pressure setting, increasing or decreasing the pressure on the basis of the original setting, and after re-calculation, executing pressure closed-loop control to achieve the pinch roll pressure leveling function. By the use of the pressure leveling control method, the problem that outer ring tower shape and steps are caused due to large deviation in gaps of pinch rolls is solved, quality of hot-rolled products is increased, the cycle of replacing the pinch rolls due to pinch roll deviation is prolonged, and machine-hour yield is increased.

Description

technical field [0001] The invention relates to the technical field of hot continuous rolling control, in particular to a pressure leveling device and control method for hot-rolled coiling and pinch rolls. Background technique [0002] At present, in the production of hot-rolled strip steel in the metallurgical industry, controlling the shape quality of steel coils in the hot-rolled production line is mainly to control the coiling process of the strip steel. The pinch roller of the coiler is the main equipment that affects the coil shape. When the replaced pinch roller frame is deflected or one side is severely worn after long-term use, there will be a gap between the operating side and the driving side, resulting in a tail tower. And the appearance of steps on the end face of the steel coil, the subsequent treatment of these defects will increase the processing cost of hot rolling. When there is a roll gap deviation, it can only be stopped when coiling thin-gauge strip ste...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B37/48
Inventor 高文刚李建彬张杰杨孝鹤王超张建华陈彤
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD