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Tension Control Method in Coil Area of ​​Strip Processing Line

A tension control and processing line technology, which is applied in the field of strip steel production, can solve problems such as poor quality of strip steel products, strip steel tension oscillation, and affect the processing line, etc., to solve tension oscillation, reduce product quality problems, and ensure normal control Effect

Active Publication Date: 2016-08-24
通用电气(武汉)自动化有限公司
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of high-strength steel varieties, when the processing line is producing and rolling thick-gauge high-strength steel, due to the mismatch between the adjustment control of the coiler and the mechanical system of the coiler, the strip tension in the coiler area of ​​the processing line will oscillate. The quality of the strip steel products is poor, and in serious cases, it will lead to the shutdown of scrap steel, which seriously affects the normal production of the processing line and brings great economic losses.

Method used

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  • Tension Control Method in Coil Area of ​​Strip Processing Line
  • Tension Control Method in Coil Area of ​​Strip Processing Line

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Embodiment Construction

[0035] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0036] see figure 1 , the strip steel processing line coiling area tension control method of the present invention, comprises the steps:

[0037] 1) The PLC receives and processes the yield strength and thickness parameters of the running strip on the processing line;

[0038] 2) Set the output Q of the coiler torque controller of the PLC according to the aforementioned parameters n :

[0039] Q n =Q n-1 +A*GAIN*(T 0 / T n )*(DEV n +DEV n-1 ) / 2,

[0040] in,

[0041] Q n : is the output (0-1) of the torque controller of the coiler at sampling time n,

[0042] Q n-1 : is the output (0-1) of the coiler torque controller at sampling time n-1,

[0043] T 0 : program scan time (1-15ms),

[0044] T n : integration time (5-15s),

[0045] GAIN: Gain proportional coefficient (9*10 -6 -18*10 -6 ),

[0046] A: Coiler torque controller adj...

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Abstract

The invention discloses a tension control method for a band steel processing line winding area. The method comprises the following steps: (1) receiving parameters of the yield strength and the thickness of band steel running on a processing line by a PLC; (2) setting the torque control parameter Qn of a winding machine of the PLC according to the parameters; and (3) setting the regulation coefficient A to be minimum to control a moment torque controller of the winding machine when the band steel on the processing line runs at constant speed, increasing the regulation coefficient A of the moment torque controller of the winding machine when the band steel is in an acceleration state or an deceleration state; and setting the regulation coefficient A of the moment torque controller of the winding machine to be maximum when the accelerated speed of the band steel in an acceleration state or an deceleration state exceeds a velocity change dead zone range. The tension control method can ensure the stability of the tension force of the winding machine and can prevent tension oscillation from influencing the production quality, and can be widely applied to the technical field of band steel production.

Description

technical field [0001] The invention relates to the technical field of strip steel production, in particular to a method for controlling tension in a coiling area of ​​a strip steel processing line. Background technique [0002] With the development of high-strength steel varieties, when the processing line is producing and rolling thick-gauge high-strength steel, due to the mismatch between the adjustment control of the coiler and the mechanical system of the coiler, the strip tension in the coiler area of ​​the processing line will oscillate. The quality of strip steel products is poor, and when it is serious, it will lead to shutdown of scrap steel, which seriously affects the normal production of the processing line and brings great economic losses. Contents of the invention [0003] The object of the present invention is to provide a tension control method in the coiling area of ​​a strip steel processing line which ensures the stability of the tension of the coiler a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C47/02
Inventor 姚伟东张亚然肖银平谭杰袁敏江琳
Owner 通用电气(武汉)自动化有限公司
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