Medium plate double-frame rolling load distribution method

A technology of rolling load and distribution method, applied in the direction of metal rolling, etc., can solve the problem that there is no direct guidance on the production site

Active Publication Date: 2013-01-30
SHOUGANG CORPORATION
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  • Abstract
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  • Application Information

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Problems solved by technology

At present, there are many studies on the theoretical model of the double-stand rolling rhythm, such as the literature "Adjustment strategy for the rolling rhythm balance of the double-stand plate Periodic Estimation of Parameter Perturbation of Rack Serial Production Line" (Journal of Beijing Institute of Technology, No. 6, 2011, P675), etc., there is no direct guidance and easy-to-apply technology for the production site

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  • Medium plate double-frame rolling load distribution method
  • Medium plate double-frame rolling load distribution method
  • Medium plate double-frame rolling load distribution method

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Embodiment Construction

[0023] Taking rolling a 30mm steel plate as an example, the specific implementation of the present invention will be described.

[0024] The same rolling time of the two rolling mills is the ultimate goal of improving the rolling rhythm. Therefore, the equal time mode is adopted to distribute the load of the double stand of the medium and heavy plate, that is, the time used by the two rolling mills is as equal as possible.

[0025] The two-stage rolling of 30 mm usually requires two steel transfers in the rough rolling stage. According to the summary of the invention, the optimal pass distribution is determined as the number of rolling passes in the finishing mill and the number of rolling passes in the roughing mill.

[0026] The thickness of 30mm steel plate is less than 50mm, and the optimum thickness to be heated is based on Figure 5 It can be determined that:

[0027] 30mm×2.11=63.3mm, floating 10mm up and down.

[0028] Taking 60mm as the thickness to be heated, we ge...

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Abstract

The invention discloses a medium plate double-frame rolling load distribution method, and belongs to the technical field of rolling of medium plates. The rolling cycle is improved by using the same rolling time of two rolling mills a target; and optimal frequency distribution of rough rolling and precision rolling of steel plates with different sizes is determined by analyzing the influencing factors such as the rolling time of different frequencies of the steel plates, the frequency and the turning steel. The determination principle of the temperature-waiting thickness of a steel plate is further determined, namely the temperature-waiting thickness of the steel plate with the size of more than 50 millimeters is 1.92 times the thickness of the steel plate, the temperature-waiting thickness of the steel plate with the size of less than 50 millimeters is 2.11 times the thickness of the steel plate, and the fluctuation range is within + / -20m. The method is applied to production of the steel plates with multiple sizes; and by linking the rolling schedule with the temperature-waiting thickness distribution of the steel plates, direct application of rolling production is facilitated.

Description

technical field [0001] The invention relates to the technical field of plate rolling, and in particular provides a load distribution method for double-stand rolling of medium-heavy plates, which is suitable for improving the rhythm of rolling steel plates of various thickness specifications in a double-stand production line. Background technique [0002] There are generally two types of layout for the plate mill: one is a single-stand form, and the other is a double-stand form. Due to the advantages of double stands in terms of productivity and flexibility, it has become the main development direction of the medium and heavy plate rolling line. For two-unit units, how each rolling mill can give full play to its rolling capacity, how to reasonably distribute the total rolling load between the two rolling mills, and how to maintain a dynamic balance between the rolling rhythm and time of the two rolling mills are directly related to smooth logistics and maximum utilization. T...

Claims

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Application Information

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IPC IPC(8): B21B1/22
Inventor 马长文田士平董占斌姜中行王龙和
Owner SHOUGANG CORPORATION
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