Strip steel coiling thickness control method and device
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A thickness control and strip steel technology, applied in the field of strip steel coiling, can solve the problems of tower shape, affecting the control accuracy of strip steel thickness, thinning of strip steel thickness, etc.
Active Publication Date: 2019-07-26
SHOUGANG CORPORATION
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[0003] In the existing process control, the lead speed of the pinch roller and the mandrel is manually set by the operator. There is no uniform quantitative standard for the value of the lead speed, and it is determined entirely by manual experience. If the lead speed is too large, it will As a result, the thickness of the strip steel is significantly thinned, which affects the overall thickness control accuracy of the strip steel and causes product quality problems; if the leading speed is too small, there will be problems with unwinding when the strip steel is coiled, and in severe cases, it will cause tower shape and collapse. and other quality problems
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no. 1 example
[0047] Please refer to figure 1 , figure 1 It shows a flow chart of the steps of a strip coil thickness control method provided in this embodiment, and the method includes:
[0048] Step S10: Obtain the target coiling temperature and set thickness for strip coiling setting in the secondary model of finishing rolling, as well as the actual thickness and actual speed of the strip obtained by detecting the strip during the strip coiling process;
[0049] Step S20: According to the actual speed, establish a first influence relationship between the actual speed, the first speed of the pinch roller, the second speed of the mandrel and the tension of the strip steel, wherein the first speed is related to the The second speed is a parameter that needs to be optimized;
[0050] Step S30: According to the set thickness, the actual thickness, the target coiling temperature and the first influence relationship, establish a second influence relationship between the strip tension and the ...
no. 2 example
[0100] see Figure 4 , the present invention also provides a strip coiling thickness control device 400, the device 400 includes: an acquisition module, a first establishment module, a second establishment module and an acquisition module.
[0101] specific:
[0102] The obtaining module 401 is used to obtain the target coiling temperature and set thickness of the strip coiling set in the finish rolling secondary model, as well as the actual thickness and thickness of the strip obtained by detecting the strip during the strip coiling process. actual speed;
[0103] The first establishment module 402 is used to establish a first influence relationship among the actual speed, the first speed of the pinch roller, the second speed of the mandrel, and the strip tension according to the actual speed, wherein the first The first speed and the second speed are parameters that need to be optimized;
[0104] The second establishment module 403 is used to establish a second influence ...
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Abstract
The embodiment of the invention provides a strip steel coiling thickness control method and a strip steel coiling thickness control device. The method comprises the following steps: acquiring a targetcoiling temperature and a set thickness for performing strip steel coiling in a finish rolling two-stage model, and the actual thickness and the actual velocity of the strip steel acquired by detecting the strip steel in a strip steel coiling process; establishing a first influence relationship among the actual velocity, a first velocity of a clamping roller, a second velocity of a mandrel and the tension of the strip steel according to the actual velocity; establishing a second influence relationship between the tension of the strip steel and thickness deviation according to the set thickness, the actual thickness, the target coiling temperature and the first influence relationship; and setting a constraint condition for the first influence relationship and the second influence relationship to acquire optimized values of the first velocity and the second velocity, and applying the optimized first velocity and the optimized second velocity to strip steel coiling production. Accordingto the strip steel coiling thickness control method and the strip steel coiling thickness control device, the problem that the thickness of the strip steel is thinned in a hot rolling coiling processis solved, the thickness control precision of the strip steel is improved, and the problems about product quality of tower shape, coil collapse and the like of a steel coil are eliminated.
Description
technical field [0001] The invention relates to the technical field of strip steel coiling, in particular to a method and device for controlling the thickness of strip steel coiling. Background technique [0002] The hot rolling coiler is a mechanical device that coils the thinned strip steel into coils. The coiler is composed of side guide plate, pinch roller, auxiliary winding roller and mandrel and other equipment. The control part of the coiler mainly includes the side guide plate opening degree control system, the pinch roll gap control system, the auxiliary roll roll gap control system, the roll control system and the auxiliary control function of the coiler. In the production process of the coiler, the areas that affect the thickness control of the strip are mainly concentrated in the two core equipment of the pinch roller and the mandrel. The specific working method is as follows: 1. The pinch roll runs at an appropriate leading speed, sends the head of the strip t...
Claims
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