Method for dynamically setting tandem rolling schedule of hot rolling strip

A rolling schedule and hot-rolled sheet technology are used in the determination of the rolling schedule for hot-rolled strip steel and the dynamic setting of the rolling schedule for hot-rolled strips. The effect of saving calculation time, saving iterative steps, and simple algorithm

Inactive Publication Date: 2010-06-16
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, since the load (rolling force, power, etc.) Lower volume - the

Method used

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  • Method for dynamically setting tandem rolling schedule of hot rolling strip
  • Method for dynamically setting tandem rolling schedule of hot rolling strip

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Experimental program
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Embodiment Construction

[0043] The present invention will be further described below in combination with specific embodiments.

[0044] Taking the production line of the 6-stand hot continuous rolling finishing unit as an example, the material of the steel plate is Q235, the feeding thickness of the rough rolling mill is 30 mm, the feeding width is 1500 mm, the feeding temperature is 1050 °C, the target finished product thickness is 7.45 mm, and the final rolling temperature is 870 °C.

[0045] Step 1. Obtain the standard reduction distribution coefficient table and the standard load distribution coefficient table

[0046] Step 2. Initialize the data and extract the rolling process parameter table

[0047] Speed ​​standard table (270.000, 330.000, 400.000) for code (1, 1, 2, 3, 7)!

[0048] Speed ​​standard table (220.000, 300.000, 370.000) for code (1, 1, 2, 3, 8)!

[0049] Looper tension standard table (0.250, 0.400, 0.200, 0.350, 0.500) for code (1, 3, 7)!

[0050]Speed ​​curve standard table (...

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Abstract

The invention relates to a method for dynamically setting tandem rolling schedule of hot rolled plate, belonging to the control technical filed in the process of steel plate rolling. In the invention, the method combing a depressing distribution coefficient with a load distribution coefficient is utilized to set rolling schedule, comprising the following steps: utilizing the depressing distribution coefficient as the optimizing initial point, calculating corresponding load at the moment, comparing with a target load distribution coefficient, and regulating depressing amount of each channel according to difference values; therefore, the purpose that set load distribution is approximate to the target load distribution after multiple times of comparison and regulation. In the invention, standard depressing distribution coefficient is used as an initial calculation point, thus saving iteration steps as the distance from the initial point to the optimized value is not too far; and load is calculated by depressing amount which is regulated through the difference between the set load distribution obtained by calculation and the target load distribution, namely the positive calculation of depressing amount to load, the algorithm is relatively simple, and the calculation time is greatly saved, thereby ensuring that the method can meet the requirement of dynamic application of production field.

Description

technical field [0001] The invention relates to a method for determining a hot continuous rolling schedule of a strip steel, in particular to a method for dynamically setting the rolling schedule of a hot strip continuous rolling, belonging to the technical field of steel plate rolling process control. Background technique [0002] The rolling schedule includes reduction system, temperature system, speed system and tension system. In general, a good rolling procedure can ensure good dimensional accuracy and temperature accuracy, good shape of the finished plate, low energy consumption, stable production and large output. The dynamic setting of the rolling schedule is an extremely important task in the processing technology of metal strips. For hot continuous rolling, its specific task is: according to the measured width, thickness and temperature of the rough-rolled exit side plate strip and other Raw data giving set values ​​for roll gap, thickness, temperature, rolling fo...

Claims

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Application Information

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IPC IPC(8): B21B37/00G06F17/50
Inventor 胡浩平费庆姚小兰李保奎耿庆波
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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