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Steelmaking-continuous-casting process batch plan optimizing method with two streams having different widths

An optimization method and planning technology, applied in program control, electrical program control, instruments, etc., can solve problems such as high cost, unsatisfactory technical problems, and low profit, and achieve the effect of fast calculation speed

Active Publication Date: 2019-02-19
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] According to the above-mentioned existing batch planning optimization method, the cost is higher, the profit is less, and the satisfactory technical problems are often unable to be solved, and a two-strand different width steelmaking-continuous casting process batch planning optimization method is provided.

Method used

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  • Steelmaking-continuous-casting process batch plan optimizing method with two streams having different widths
  • Steelmaking-continuous-casting process batch plan optimizing method with two streams having different widths
  • Steelmaking-continuous-casting process batch plan optimizing method with two streams having different widths

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Embodiment 1

[0097] In the embodiment, the letters and symbols used and their meanings are shown in the following table:

[0098]

[0099]

[0100] Decision variables

[0101]

[0102] In order to facilitate the establishment and solution of the mathematical model of the production work order group furnace group pouring problem, the performance index of the problem was transformed first, and then the key elements of modeling such as the problem's goal, constraint conditions and decision variables were carried out. describe.

[0103] The performance indicators are:

[0104] The steel type difference of the production work orders grouped into each heat is as small as possible.

[0105] The difference in the co-flow width of the production work order from the group to each heat is as small as possible.

[0106] The steel grade difference between adjacent heats grouped into the same tundish should be as small as possible.

[0107] The difference in width between adjacent heats of ...

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Abstract

The invention provides a steelmaking-continuous-casting process batch plan optimizing method with two streams having different widths. The method comprises the following steps of S1, building a steelmaking continuous-casting production scheduling heat-cast batch plan model; and S2, the model in the S1 is subjected to optimizing by adopting a variable neighborhood search combined with a simulated annealing algorithm. According to the steelmaking-continuous-casting group stove and group cast batch plan optimizing method with the two streams having different widths, convenience, simplicity and rapid calculation speed are achieved, and the deficiencies that blanks with multiple varieties, multiple specifications and small batches cannot be inputted in previous methods are effectively solved.

Description

technical field [0001] The invention relates to the field of production, in particular to a batch planning optimization method for steelmaking-continuous casting process of two streams with different widths based on the combination of simulated annealing and variable neighborhood search. Background technique [0002] With the development of the iron and steel industry, the orders of iron and steel enterprises are increasingly showing the characteristics of multiple varieties, small batches and customization. [0003] When the number of input contracts or slabs is small and there are many specifications, the existing batch planning optimization method is to set the width value of the two-stream crystallizer in the same heat to the same value, when the number of slabs is small , The width fault between heats, the calculated excess material rate or the number of bales lead to higher costs and less profit, and often fail to produce satisfactory results. Contents of the inventi...

Claims

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Application Information

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IPC IPC(8): G05B19/418
CPCG05B19/41865G05B2219/32015
Inventor 程应孙福权
Owner NORTHEASTERN UNIV