CN1775422A - Group intermediate ladle method for steel making continuous casting production process - Google Patents
Group intermediate ladle method for steel making continuous casting production process Download PDFInfo
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- CN1775422A CN1775422A CN 200510111058 CN200510111058A CN1775422A CN 1775422 A CN1775422 A CN 1775422A CN 200510111058 CN200510111058 CN 200510111058 CN 200510111058 A CN200510111058 A CN 200510111058A CN 1775422 A CN1775422 A CN 1775422A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000009749 continuous casting Methods 0.000 title claims abstract description 11
- 238000009628 steelmaking Methods 0.000 title claims description 9
- 238000004519 manufacturing process Methods 0.000 title abstract description 17
- 238000005457 optimization Methods 0.000 claims abstract description 21
- 238000013459 approach Methods 0.000 claims description 9
- 238000010079 rubber tapping Methods 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 5
- 238000005096 rolling process Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 230000002068 genetic effect Effects 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 238000010845 search algorithm Methods 0.000 claims description 2
- 238000009826 distribution Methods 0.000 abstract description 9
- 238000003723 Smelting Methods 0.000 abstract description 2
- 238000012856 packing Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 230000008520 organization Effects 0.000 description 3
- 102100020679 Krueppel-like factor 6 Human genes 0.000 description 2
- 108010049058 Kruppel-Like Factor 6 Proteins 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000001195 anabolic effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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Abstract
The present invention relates to a combined basket method used in the steel-smelting continuous casting production process. It is characterized by that said method creates several constraint conditions and correspondent penalty values, and overall considers these constraint conditions and actual production process, creates the bascket distribution optimization model, makes reasonable combination of formed Cast-LOT and optimization of chain connection so as to attain the goal of raising production efficiency and reducing production cost. Said invention also provides the concrete steps and application of said method.
Description
Technical field
The present invention relates to the group tundish method in a kind of steel-making continuous casting producing process.
Background technology
In steel-smelting continuous casting-integrated compilation process of the hot rolling production schedule,, adopted the CAST_LOT technology in order to reach the accurate balance logistics.So-called CAST_LOT just is meant that the heat with identical tapping mark arranges formed heat set from big to small by width.Generally have maximum stove number restriction, maximum restriction of transferring wide number of times and breadth adjusting quantity.In order to realize the optimization of organization of production, effectively reduce production costs, improve usage ratio of equipment, must carry out the distribution of tundish to formed CAST_LOT.In continuous casting was produced, wide number of times of the accent of tundish and pouring furnace number had strict restriction, for lowering the utilization ratio of production cost, raising tundish, must reasonably divide tundish to CAST_LOT, made the stove in the tundish count maximum, transferred wide least number of times.
Existing method is manually only to carry out the CAST_LOT merger by can even watering rule, and formation can be organized the tundish unit of production.But fully the related constraint of group tundish is not fully held and considered in each relevant link before, and in the process of artificial pre-group tundish, have certain one-sidedness and narrow-mindedness.So need after group CAST_LOT finishes, carry out reasonable combination and optimization link, production efficiency to be provided and to reduce production costs to formed CAST_LOT.
Summary of the invention
The object of the present invention is to provide the group tundish method in a kind of steel-making continuous casting producing process, take all factors into consideration constraints and actual organization of production process, set up the tundish Distribution Optimization Model.
Since CAST_LOT at the tapping mark, connect and to water family's sign indicating number (CC_CODE), maximum stove number, transfer and have some difference aspect the various factors such as wide number of times, therefore to water family's sign indicating number (CC_CODE), transfer under the constraintss such as wide number of times and the maximum stove number of tundish CAST_LOT is divided into different tundish satisfying to connect.Set up the tundish Distribution Optimization Model and be and under satisfying tundish production constraints, calculate different CAST_LOT and be divided in penalty value in the same tundish.The tundish Distribution Optimization Model considered simultaneously CAST_LOT constraints such as tapping mark, width, accent wide number of times and priority and rolling scaduled in to the demand of slab order, CAST_LOT is carried out the merger combination, obtain tundish.Concrete merger combined method may further comprise the steps:
1) judge whether to satisfy simultaneously following three kinds of constraints, if then enter step 2), otherwise, penalty value is set for infinitely great,
1. whether satisfy to connect and water family's sign indicating number (CC_CODE) requirement;
2. whether satisfy the maximum stove of tundish and count requirement;
3. whether satisfy and transfer wide number of times requirement;
2) under the situation that satisfies above-mentioned three kinds of constraints, calculate following several penalty value:
1. width jumps and punishes;
2. priority difference punishment;
3. the mark difference of tapping punishment;
4. rolling unit difference punishment;
5. less than the maximum stove number punishment of tundish;
3) the every punishment accumulative total step 2) is divided into different tundish to CAST_LOT according to the minimum principle of penalty value.
This merger anabolic process is similar to the typical problem in " operational research " field---bin packing (Bin packing Problem, be called for short BP), but be different from typical bin packing, typical bin packing has the one dimension constraint, and to take all factors into consideration constraints such as tapping mark, width, the wide number of times of accent and priority in the group tundish process, have the multidimensional constraint.The similarities and differences of analysis bank tundish process and typical BP problem, consideration is created as the tundish Distribution Optimization Model bin packing (CPBP) of a distortion, in CPBP, regard tundish as chest, the interior article of case of need packing into are CAST_LOT, and the constraints that loading procedure need be considered is every process constraint, and optimization aim is to satisfy under the constraints, pack into the total penalty value minimum of CAST_LOT of each tundish is so that use the quantity of tundish few as far as possible.
The tundish allocation optimization problems is the extensive mixed integer programming problems with thousands of variablees and constraints up to a hundred, can comprise that tabu search algorithm, genetic algorithm (GA), ant group algorithm (ACO) and particle cluster algorithm (PSO) and rule-based heuritic approach find the solution by modern intelligent optimization algorithm.Intelligent optimization algorithm and heuritic approach can well address this problem, but both cut both ways: intelligent optimization algorithm has versatility, can find optimal solution, guarantee surely to separate but differ, and the speed of service is slow; The rule-based heuritic approach speed of service is very fast, can guarantee to separate, and finds optimal solution surely but differ.
Heuritic approach is a kind of algorithm rapidly and efficiently, has simple structure, can try to achieve the characteristics of optimization solution rapidly, is widely used in various optimization problems all the time.Find the solution for preferred heuritic approach among the present invention of tundish allocation optimization problems, this algorithm is that the technological procedure with tundish is a basic norm, tundish Distribution Optimization Model and a kind of heuritic approach of constructing, and it can the extensive variable problem of rapid solving.Heuritic approach is to have added the heuristic information relevant with problem in search, is used for guidance search to advance towards most promising direction, and the solution procedure of acceleration problem, and find optimal solution or more excellent separating.
The present invention has taken all factors into consideration constraints and actual organization of production process, by setting up the tundish Distribution Optimization Model, formed CAST_LOT is reasonably made up and optimizes link, has improved production efficiency, reduces production costs.
Further specify the present invention below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is the group tundish method embodiment flow chart in the steel-making continuous casting producing process.
The specific embodiment
Group tundish method in a kind of steel-making continuous casting producing process, its flow chart as shown in Figure 1,
1) beginning is regarded CAST_LOT as middle bag, bag attribute in giving, and note CAST_LOT number is N;
2) initializing variable i=0, j=0, punishment matrix penalty[N] [N]=0;
3) do you judge whether CAST_LOTi identical with the CC_CODE of CAST_LOTj? if, order execution in step 4), otherwise change step 7);
4) do you judge that CAST_LOTi and CAST_LOTj stove count sum smaller or equal to the maximum stove number of middle bag? if, order execution in step 5), otherwise change step 7);
5) do you judge that CAST_LOTi and CAST_LOTj transfer wide number of times sum not smaller or equal to 2? if, order execution in step 6), otherwise change step 7);
6) calculate width jumps, the priority difference between CAST_LOTi and CAST_LOTj, the mark difference of tapping, rolling unit difference and less than every punishment sum penalty[i such as the maximum stove numbers of middle bag] [j], enter step 8);
7) penalty[i is set] [j] for infinitely great;
8) find out a penalty[i of penalty value minimum] [j], merge then CAST_LOTi and CAST_LOTj and root new in the bag attribute;
9) judge whether all penalty[i] [j] for infinitely great? if then finish, otherwise N=N-1 changes step 2).
Wherein in the step 6), can find the solution at tundish Distribution Optimization Model structure heuritic approach.Because this algorithm is a known technology, and has been widely used, and omits concrete solution procedure at this.
Claims (3)
1, the group tundish method in a kind of steel-making continuous casting producing process may further comprise the steps:
1) judge whether to satisfy simultaneously following three kinds of constraints, if then enter step 2), otherwise, penalty value is set for infinitely great,
1. whether satisfy to connect and water family's sign indicating number requirement;
2. whether satisfy the maximum stove of tundish and count requirement;
3. whether satisfy and transfer wide number of times requirement;
2) under the situation that satisfies above-mentioned three kinds of constraints, calculate penalty value: width jumps and punishes; The punishment of priority difference; The punishment of tapping mark difference; The punishment of rolling unit difference; Less than the maximum stove number punishment of tundish;
3) the every punishment accumulative total step 2) is divided into different tundish to CAST_LOT according to the minimum principle of penalty value.
2, the group tundish method in the steel-making continuous casting producing process according to claim 1 is characterized in that: step 2) in calculate penalty value and adopt intelligent optimization algorithm to find the solution.
3, the group tundish method in the steel-making continuous casting producing process according to claim 2, it is characterized in that: described intelligent optimization algorithm comprises tabu search algorithm, genetic algorithm, ant group algorithm and particle cluster algorithm and rule-based heuritic approach.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200510111058 CN1775422A (en) | 2005-12-01 | 2005-12-01 | Group intermediate ladle method for steel making continuous casting production process |
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| CN 200510111058 CN1775422A (en) | 2005-12-01 | 2005-12-01 | Group intermediate ladle method for steel making continuous casting production process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885328B (en) * | 2006-06-20 | 2012-09-26 | 东北大学 | Steelmaking-continuous casting tundish batch plan method and system |
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- 2005-12-01 CN CN 200510111058 patent/CN1775422A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1885328B (en) * | 2006-06-20 | 2012-09-26 | 东北大学 | Steelmaking-continuous casting tundish batch plan method and system |
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