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Method and system for scheduling production of small-scale steel mill

A technology for production scheduling and rolling mills, applied in the field of production scheduling methods and production scheduling systems

Inactive Publication Date: 2012-09-19
SIEMENS CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] An object of the present invention is to provide a production scheduling method and system for overall solving the problems of allocation, arrangement and cutting optimization of such stock billets

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  • Method and system for scheduling production of small-scale steel mill
  • Method and system for scheduling production of small-scale steel mill
  • Method and system for scheduling production of small-scale steel mill

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Embodiment Construction

[0081] In order to have a clearer understanding of the technical features, purposes and effects of the invention, the specific implementation of the invention will now be described with reference to the accompanying drawings.

[0082] figure 1 A schematic flow of the production scheduling method for a small rolling mill is shown.

[0083] At step S102, according to the steel type and product size code, the customer order is assigned to a corresponding sequence and a randomly selected pass, thereby generating an initial production plan.

[0084] In step S103, the rolling sequences in the initial production plan formed in step S102 are sorted according to the delivery date, and two orders with the same steel type group are combined and allocated to one billet according to the merging algorithm, and the processed The rolling sequence is generated to generate a consolidated production plan.

[0085] In step S104, when the corresponding total output rate of the merged production ...

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Abstract

The invention provides a method for scheduling production of a small-scale steel mill, comprising the following steps: distributing customer orders to the corresponding sequence and randomly selected gate according to a steel type group and a product size code to generate the initial production plan; ordering the initial production plan based on the date of delivery in an ascending order and combining two orders of the same steel type based on a combining algorithm to generate a merge production plan; continuously configuring new gates when the corresponding total output rate of the consolidated production plan is less than a critical threshold until the corresponding output rate of the production plan is greater than or equal to a stop value and outputting a gate changing production plan; and selecting a sequence to be processed from the gate changing production plan, inserting the other order in the sequence or replacing the order in the sequence so as to generate an order changing production plan. The invention also provides a system for scheduling production of a small-scale steel mill. The method provided by the invention can be used for solving the problems of distributing, arranging and optimally cutting inventory billet steel in the production process in a steel mill.

Description

technical field [0001] The invention relates to a production scheduling method and a production scheduling system, in particular to a production scheduling method and a production scheduling system for a small rolling mill. Background technique [0002] Small-scale steelworks are usually equipped with production lines such as casting, rolling, finishing, etc., to produce long profiles such as bars, sections, and rails. The Production Scheduling System (PPS) that generates production arrangements for small rolling mills based on customer lists is very important to the effective rolling process. When formulating production plans, manufacturers need to comprehensively consider the raw material status of production and customer product requirements. [0003] The raw material for a rolling mill can be a slab that has been formed into a cold charge, or a hot charge from a continuous caster. When arranging the production plan, the manufacturer needs to grasp the steel type, cross-...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/04
CPCG05B2219/32086G05B2219/32041G05B19/41865Y02P90/02
Inventor 林楠柳杨华杜万古
Owner SIEMENS CHINA
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