A method and device for controlling pinch rollers

A pinch roll and control pinch technology, which is applied in the direction of rolling mill control devices, manufacturing tools, metal rolling, etc., can solve the problems that the surface quality of the strip steel cannot be guaranteed, and the pinch roll surface is easily damaged.

Active Publication Date: 2018-12-14
SHOUGANG JINGTANG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems existing in the prior art, the embodiments of the present invention provide a method and device for controlling the pinch rolls, which are used to solve the problems of the surface quality of the strip during the coiling process of hot-rolled strip production in the prior art. The technical problem that the guarantee is reached and the surface of the pinch roller is easily damaged

Method used

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  • A method and device for controlling pinch rollers
  • A method and device for controlling pinch rollers
  • A method and device for controlling pinch rollers

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Embodiment 1

[0031] Before introducing the specific implementation method of this article, here is the production process of the hot rolling production line, such as figure 1 As shown, the hot rolling production line includes: a finishing stand 11 and a coiler 12. The finishing stand includes seven finishing mills, namely: F1 stand, F2 stand, F3 stand, F4 stand, F5 stand Frame, F6 frame, F7 frame; after the strip is finished rolling by the finishing frame, the finished product is coiled by the coiler 12. Among them, a thermal detector is also provided on the production line before the coiler 12.

[0032] This embodiment provides a method for controlling the pinch roller, such as figure 2 As shown, the method includes:

[0033] S201, obtaining steel grade information.

[0034] In this step, the primary control system reads steel grade information from the steel grade information database PDI. The steel grade information includes parameters such as steel grade model, strip thickness, strip width,...

Embodiment 2

[0042] Corresponding to the first embodiment, this embodiment also provides a device for controlling the pinch roller, see image 3 , The device includes: an acquisition unit 31, an assignment unit 32, and a control unit 33; wherein,

[0043] The acquiring unit 31 is used to acquire steel grade information; the acquiring unit 31 belongs to a primary control system, and the acquiring unit 31 reads steel grade information from the steel grade information database PDI, and the steel grade information includes: steel grade Parameters such as model, strip thickness, strip width, target rolling temperature, etc. Wherein, the first-level control system is used to issue instructions, and the first-level control system is a PLC control system.

[0044] The assignment unit 32 is used to assign the control flag bit according to the steel grade information; here, because each steel grade is different, the corresponding rolling process is also different. Therefore, after the acquisition unit 3...

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Abstract

The invention provides a method and device for controlling a pinch roll. The method comprises the steps that steel variety information is obtained; value assignment is performed on the control mark position according to the steel variety information; and the pinch roll is controlled to be lifted to the preset height according to the value of the control mark position when strip steel is coiled. In this way, the lifted height of the pinch roll is adjusted in real time according to the steel variety information so as to adjust the pressure of the pinch roll in real time, therefore the problem of generation of coarse grains on the surface of the strip steel caused by excessively large pressure of the pinch roll is solved, and the problem that the roll face of the pinch roll is damaged due to the fact that friction between the surface of the pinch roll and the strip steel is caused by excessively large pressure of the pinch roll is also avoided.

Description

Technical field [0001] The invention relates to the technical field of hot tandem rolling, in particular to a method and device for controlling a pinch roll. Background technique [0002] In the production of hot-rolled strip steel in the metallurgical industry, the control of the surface quality of the hot-rolled production line is mainly achieved by controlling the rolling profile of the finishing mill and the coiling process of the coiler. [0003] In the prior art, the pinch roller exerts a force on the surface of the strip during the entire coiling process and performs pressure closed-loop control. This control method has the following problems: 1) The pinch roller has too much pressure, which causes the strip The steel has serious quality defects; 2) Because the surface of the pinch roller has been pressed against the surface of the high-temperature strip steel according to this pressure value, it will damage the surface of the pinch roller for a long time and reduce the serv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B15/00B21B37/00B21C47/02
CPCB21B37/00B21B2015/0057B21B2201/06
Inventor 高文刚周政王晓东李继新陈彤李东宁秦红波李瑞王超黄爽詹美珠
Owner SHOUGANG JINGTANG IRON & STEEL CO LTD
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