Control method for forward slipping coefficient of hot rolled silicon steel

A control method and forward sliding technology, applied in the rolling mill control device, metal rolling, metal rolling, etc., can solve the problems of steel drawing, poor rolling adaptability, strip stacking, etc., to reduce the accumulation of loopers, solve the The effect of rolling instability and improved adaptability

Active Publication Date: 2012-07-11
ANGANG STEEL CO LTD
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Problems solved by technology

However, in the actual production process, it is found that even in this control mode, when silicon steel is rolled, usually the first few steel loops in each rolling cycle are still unstable, and the indicators such as rolling stability and plate shape are not easy to control
The reason is that the rolling adaptability of the silicon steel is poor due to the particularity of its own performance...

Method used

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  • Control method for forward slipping coefficient of hot rolled silicon steel
  • Control method for forward slipping coefficient of hot rolled silicon steel

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Embodiment 1

[0020] The grade of silicon steel is 50AW800, and the rolling specification is 2.5×1050mm. F1 sets the forward slip coefficient to -0.0522, F2 sets the forward slip coefficient to -0.0200, F3 sets the forward slip coefficient to -0.0320, F4 sets the forward slip coefficient to -0.0176, and F5 sets the forward slip coefficient to -0.0046.

[0021] Input the set forward slip coefficient of each finishing mill into the finishing rolling model control program respectively. When the finishing mill rolls the first piece of silicon steel, the finishing mills of each stand use the set forward slip coefficient, and the forward slide coefficient used for the silicon steel of the brand and specification rolled later is determined according to the actual loop condition of the previous piece of silicon steel. Adjustment, the model self-learning program automatically uses the adjusted forward slip coefficient of the previous silicon steel as the forward slip coefficient of the next silicon ...

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Abstract

The invention provides a control method for forward slipping coefficient of hot rolled silicon steel. The method comprises steps of additionally arranging a forward slipping control module in a finish rolling model control program, determining the set forward slipping coefficient of each finishing mill according to silicon steel marks and rolling specifications, learning and adjusting the forward slipping coefficients according to actual rolling conditions and loop states, and automatically recovering the forward slipping coefficients after being adjusted in a next rolling period so as to cause the forward slipping coefficient of each finishing mill to be more suitable for features and rolling characteristics of the silicon steel, therefore, the adaptability of the forward slipping coefficient is improved, the possibility of loop accumulation and quality accidents can be reduced, the problem of unstable rolling in silicon steel rolling, in particular to an initial stage of each roller changing period is solved, and the production is ensured to be carried out smoothly.

Description

technical field [0001] The invention belongs to the technical field of rolling technology, and in particular relates to a method for automatically adjusting and controlling the forward slip coefficient of a finishing mill during hot rolling of silicon steel. Background technique [0002] There is a looper device between the hot rolling and finishing stands of the strip steel, which is used to control the flow change between the front and rear stands. The forward slip coefficient is an important parameter to control the metal flow matching between the front and rear racks. In the finishing rolling control, the forward slip coefficient is usually adjusted automatically by model self-learning. The specific process is that the forward slip coefficient used for this piece of steel is After the piece of steel is rolled, the coefficient adjusted by the model self-learning program is based on the actual loop control situation of the previous piece of steel. The coefficient is adjus...

Claims

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Application Information

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IPC IPC(8): B21B37/00B21B3/00
Inventor 吴胜田车志良杨洪涛赵勐兰少岩
Owner ANGANG STEEL CO LTD
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