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Self-adaptive calculation method of cold-rolled forward-sliding model for stable rolling

A technology of model self-adaptation and calculation method, which is applied in the direction of calculation, metal rolling, metal rolling, etc., can solve the problems of inability to measure, the difference between calculation results and actual values, etc., achieve reasonable calculation of second flow rate, and improve rolling stability , the effect of improving the forecast accuracy

Active Publication Date: 2018-10-16
SHANGHAI MEISHAN IRON & STEEL CO LTD
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Problems solved by technology

[0016] Although the forward slip theory model is stricter than other models and considers many factors, some factors in the neutral angle formula cannot be measured, such as the friction coefficient, which leads to a large difference between the calculated results of the model and the actual values. Therefore, There is an urgent need for a new solution to solve this technical problem

Method used

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  • Self-adaptive calculation method of cold-rolled forward-sliding model for stable rolling
  • Self-adaptive calculation method of cold-rolled forward-sliding model for stable rolling
  • Self-adaptive calculation method of cold-rolled forward-sliding model for stable rolling

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Embodiment 1

[0064] Embodiment 1: see figure 1 , a cold rolling forward slip model adaptive calculation method for stable rolling, the method is as follows:

[0065] Step 1, the collection of rolling process data;

[0066] Step 2, the calculation of the measured value of the forward slip;

[0067] Step 3, correction and distribution calculation of the forward slip theoretical model;

[0068] Step 4. Use the forward sliding model coefficient debugging tool to adjust the friction coefficient compensation factor;

[0069] Step 5, the final determined compensation factor is loaded into the memory table of the process computer;

[0070] Step 6, calculating the forward slip adaptive coefficient during the current strip rolling;

[0071] Step 7, considering the calculation of the forward sliding adaptive coefficient of the previous steel strip.

[0072] In said step 1, the collection of rolling process data includes strip speed vs, roll speed Vr, material thickness H1, entrance thickness H, ...

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Abstract

The invention relates to a self-adaptive calculation method of a cold-rolled forward-sliding model for stable rolling. The self-adaptive calculation method of the cold-rolled forward-sliding model forthe stable rolling is characterized by comprising the following steps that step 1, collecting rolling technology data; step 2, calculating of a forward-sliding measured value; step 3, correcting anddistributing calculation of a forward-sliding theoretical model; step 4, adjusting a friction coefficient compensation factor by using a forward-sliding model coefficient debugging tool; step 5, and loading finally determined compensation factors into a process computer memory table; step 6, calculating a forward sliding self-adaptive coefficient when a current strip steel is rolled; and step 7, considering the calculation of the forward-sliding self-adaptive coefficient of a previous strip steel. According to the method, the forward-sliding value can be accurately calculated out, so that thesetting precision of the circumferential speed of each rack roller is guaranteed, the phenomenon that the metal mass flow is unstable is avoided, and the rolling stability is improved.

Description

technical field [0001] The invention relates to a calculation method, in particular to a cold rolling forward slip model self-adaptive calculation method for stable rolling, and belongs to the rolling technical field of cold tandem rolling mills. Background technique [0002] In the continuous cold rolling process, tension is a very active process parameter, and its fluctuation and change will instantly cause fluctuation and change of other process parameters. The tension system and the speed system are closely related. If the setting accuracy of the speed cannot be guaranteed, the second volume flow of the metal will be out of balance, which will cause the fluctuation of the tension in an instant, so that the rolling state of the whole unit will be unstable, resulting in the breaking of the rolling mill. The occurrence of pile steel accidents. Therefore, in modern tandem cold rolling mills, there are also extremely high requirements for the accuracy of the speed-tension ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B33/00G06F17/50
CPCB21B33/00G06F30/17G06F30/20
Inventor 翟承荣杨文兵
Owner SHANGHAI MEISHAN IRON & STEEL CO LTD
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