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Plate coil automatic scheduling method and system for cold rolling hot galvanizing units

An automatic scheduling, hot-dip galvanizing technology, applied in the direction of comprehensive factory control, sustainable manufacturing/processing, comprehensive factory control, etc., can solve the difficulty of production scheduling of hot-dip galvanized sheet and coil, and the difficulty of manual scheduling results to reduce the total production cost, etc.

Active Publication Date: 2009-01-14
NORTHEASTERN UNIV
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  • Description
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AI Technical Summary

Problems solved by technology

At present, the production scheduling of hot-dip galvanized coils in iron and steel enterprises is quite difficult, and the result of manual scheduling is difficult to achieve the goal of reducing the total production cost and giving full play to the production capacity of the unit

Method used

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  • Plate coil automatic scheduling method and system for cold rolling hot galvanizing units
  • Plate coil automatic scheduling method and system for cold rolling hot galvanizing units
  • Plate coil automatic scheduling method and system for cold rolling hot galvanizing units

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Embodiment Construction

[0156] Below we give a specific implementation case. First, we give the data and parameters used in the case. The data used in this case is a simplified version, which is randomly selected from the actual production data of a large iron and steel enterprise. The scale of data in actual production is larger than this case. In the case, there are 20 coils to be produced, all of which are high-strength steel. Among them, there are 8 outer plates, respectively indexed by 1, 2, ..., 8, and 12 inner plates, respectively indexed by 9, 10, ..., 20. Hot-dip galvanizing production unit Let us take the technical regulations of a large iron and steel enterprise as an example, as shown in Table 1. Table 2 shows the static parameters used in the process of job plan generation. The determination of the objective function weight and transition cost penalty coefficient in Table 2 was given by the senior planner of the large iron and steel company based on experience, and the parameters of ...

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Abstract

An automatic plate coil dispatching method and a system for cold-rolling hot dip galvanizing lines belong to the technical field of coiled plate processing. The dispatching method comprises the following steps of: arranging all outer plate coils by width in a wide-to-narrow sequence to form an initial outer plate work plan; interpolating inner plates into the initial outer plate work plan so that the quantity of continuously manufactured outer plates does not exceed the upper limit and each jump constraint; generating an inner plate work plan by nearest neighbor method behind the outer plate work plan; connecting the outer plate work plan and the inner plate work plan to construct the initial work plan; adjusting and optimizing the work plan: using a frame integrating variable-depth neighborhood search and tabu search to improve the initial work plan so as to minimize the object value of the model; and issuing the exchanged and adjusted plan for execution. The method and the system of the invention improve the work quality, shorten the time for work plan generating and increase the production efficiency.

Description

technical field [0001] The invention belongs to the technical field of coil processing, and in particular relates to a method and system for automatically dispatching coils of a cold-rolling hot-dip galvanizing unit. Background technique [0002] As a high value-added product and high-efficiency material-saving product, hot-dip galvanized steel is the fastest-growing steel variety, and its proportion in steel varieties has increased year by year. In major steel producing countries such as the United States and Japan, galvanized steel is the most The proportion of steel has been as high as 13-15%, of which 70% are hot-dip galvanized steel sheets. my country's current hot-dip galvanized steel sheet only accounts for about 5% of the total output just now, and has great development potential. Hot-dip galvanized steel is mainly used in the construction, automotive and home appliance industries. The wide application of hot-dip galvanized steel sheets has promoted the rapid devel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCY02P80/10Y02P90/02
Inventor 唐立新高聪
Owner NORTHEASTERN UNIV
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