JP2000225545A - Production planning organizing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically plan a production planning satisfying detail information and a constraint of each process according to a situation at a point of time when the production planning is planned by providing a scenario executing part outputting a command for executing an organization of the production planning in a production planning organization means classified by process based on a scenario. SOLUTION: A production planning organization and management means 20 is constituted of a scenario storing part 201 and a scenario executing part 202. The scenario storing part 202 is a part for storing a scenario to be a planning procedure of a production planning by this production planning organizing device. The scenario executing part 201 is a part for selecting a proper scenario from the scenario storing part 202 based on starting commands from an operator or other systems, giving starting instructions to a detail information management means 21, a continuous casting process production planning organization means 22, a rolling process production planning organization means 23 in accordance with the selected scenario and organizing the production planning.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a production planning / organizing apparatus, and more particularly to a production planning / organizing apparatus capable of organizing a production plan that satisfies various order specifications and also satisfies restrictions on production processes.

[0002]

2. Description of the Related Art In recent years, the demands of users for products produced by producers are diversifying, and it is required to produce products that satisfy the requirements of users. There are various limitations due to capabilities and the like. For this reason, it is necessary to draft a production plan that satisfies the specifications required by the user and also satisfies the constraints on the producer side. Such a production plan organization method has already been put to practical use.

[0003] For example, for a rolled steel sheet P, which is one of the final products of the steel making and rolling process at an ironworks, a delivery date D, a steel sheet width H, a steel sheet thickness t, a steel sheet length L, a weight W, a steel type K and The quality characteristic Q is registered as a required specification of the user. On the other hand, restrictions on the producer side include, for example, the following restrictions. 1. The weight of the rolled steel sheet that can be rolled in the rolling process without changing the rolls of the rolling mill must be within a predetermined range.

[0004] The amount of rolling at a time without changing the roll is called one rolling unit. 2. In the casting step, which is a step before the rolling step, a plurality of steel types can be cast continuously without changing the tundish, but there is an upper limit to the maximum number of charges that can be cast continuously. The amount that can be cast continuously at one time is called one casting unit. Usually, one casting unit corresponds to one or more rolling units. 3. Strictly adhere to delivery date D. 4. The type of rolled steel sheet that can be rolled without changing the roll of the rolling mill is limited by the surface characteristics and shape of the roll.

[0005] This limitation is called the rolling type. The applicable rolling type is determined for each rolled steel sheet according to the required quality. 5.1 Rolled steel sheets in a rolling unit must be arranged so that the width of the steel sheets is gradually reduced in the order of the rolling process by the rolling mill. In addition, about the rolled steel plate of the same width, it is necessary to arrange so that a plate thickness may become thin sequentially. 6. The difference between the thicknesses of successively rolled steel sheets must be within predetermined limits. 7. The order of the slabs in the casting unit is the order of the casting process by the continuous casting machine, and the casting completion time of the slab is made to match the rolling start time as much as possible. 8. Within the casting unit, slabs of the same width should be collected as much as possible. 9. When casting different steel types with one continuous casting machine, the quality is deteriorated at the switching portion of the steel types.

In such a situation, it is extremely difficult to draft a production plan that satisfies all of the restrictions 1 to 9, and therefore, it is embodied in the following series of flows. First, the shape of one casting unit and one or more rolling units corresponding to it should be determined in consideration of the tapping amount from the blast furnace, stock status, equipment operation plan, etc., which are in the preceding process of the continuous casting process. , And further satisfy constraints 1, 2, and 3. For example, a total of 8 charges of 6 charges of type A steel and 2 charges of type B steel are defined as one casting unit, and this one casting unit corresponds to one rolling unit of a certain rolling type.

Next, an order to be manufactured in the casting unit and the rolling unit is selected so as to satisfy the constraints 3 and 4 by six charges of the A steel type and two charges of the B steel type. At this time, constraint 3 is given priority over constraint 4. Further, a rolling process production plan is formed by arranging the rolled steel sheets corresponding to each order so as to satisfy the constraint 5. At this time, if there is a rolled steel sheet that does not satisfy the constraint 6 no matter how it is rearranged, it is tagged as a steel sheet violating the constraint.

Further, the casting order in the continuous casting machine is determined so as to satisfy the constraints 7 and 8 in order to cast the slab after knitting. Finally, a check is made as to whether constraint 9 is satisfied when casting in the determined order, for example, if an order that should be of high quality has not been assigned to the steel grade seam.

[0009] Since production instructions cannot be issued for the casting or hot rolling process while the restrictions are violated, the operator has to consider countermeasures and exchange orders so as to satisfy the restrictions. For example, when the constraint 6 is not satisfied, that is, when there are two continuous rolled steel plates, the rolled steel plate has a median thickness of two rolled steel plates having a large difference in thickness, and also satisfies other constraints. Looking for an order like
It is inserted between the two rolled steel plates. If the constraint 9 is not satisfied, that is, if an order requiring high quality is allocated to the switching part of the steel type, the order requiring high quality is replaced with an order whose quality requirement is not strict. .

[0010]

However, there is no way to search for an appropriate order from a wide variety of orders, or there is not enough work time for eliminating constraints, and a slab manufacturing instruction that cannot be linked to the order must be issued. It is inevitable that productivity will be lost due to failure to obtain. In order to solve this problem, it is conceivable to select an order that satisfies all of the restrictions 1 to 9 from the beginning, but the selection may not converge.

Further, depending on the contents of the order, that is, the characteristics of the rolled steel sheet and the order quantity, it may be more efficient to draft a production plan by a procedure different from the above procedure. Therefore, in the production planning method, a mechanism that can change the production planning procedure according to the situation at the time of production planning, such as an order, and a mechanism that allows the operator and the computer to collaborate and draft the production plan are required. Becomes

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and is capable of coping with various order specifications and compiling an overall production plan that simultaneously satisfies the constraints of a plurality of production processes. Another object of the present invention is to provide a production planning and organizing apparatus capable of suppressing a decrease in productivity.

[0013]

According to a first aspect of the present invention, there is provided a production planning / organizing apparatus, comprising: item information management means including an item information storage unit for storing item information including order item information and a method of manufacturing the order item; A plurality of step-by-step production plan forming means for forming a step production plan of a plurality of steps related to each other in a production step, which satisfies a constraint condition set in advance based on the specification information stored in the specification information storage unit. In the production planning and organizing apparatus, a production plan compiling means for each process is selected from a scenario storage unit storing a plurality of scenarios which are production planning procedures for compiling a production plan of each process, and a plurality of scenarios stored in the scenario storage unit. And a scenario execution unit for outputting a command for executing the production plan composition in the production plan composition means for each process based on the scenario. Further comprising a stage.

According to the present invention, the process production plan compiling means is executed according to the scenario, and a production plan that satisfies the order and the constraints of each process is drafted. In the production plan knitting apparatus according to the second invention, the scenario storage unit specifies the production plan knitting means for each process for executing the knitting of the production plan, the order of the knitting of the production plan by the production plan knitting means for each process, and detailed information. At least two or more scenarios including information on the presence / absence of replacement and the specification of the preconditions at the time of executing the composition are stored.

According to the present invention, the process organizing means is executed according to the scenario. If the constraints of the production process are not satisfied, the order is supplemented, and the production plan satisfying the detailed information and the constraints of each process. Is drafted. In the production plan knitting apparatus according to the third invention, each of the plurality of step-by-step production plan knitting means selects a scenario in which the item information is replaced or added "present" by the scenario execution unit and is knitted first. When the detailed information included in the process production plan includes detailed information that does not satisfy the constraint condition of the process, a detailed information supplementing unit that replaces or adds the detailed information is provided. When receiving a request for replacement or addition of detail information from the compensation processing unit, the detail information that satisfies the constraint condition is reselected from the detail information stored in the detail information storage unit and transferred to the detail information supplement processing unit. A selection processing unit is provided.

In the present invention, a production plan that satisfies the order and the constraints of each process is organized according to the scenario.
According to a fourth aspect of the invention, there is provided a production planning and knitting apparatus, wherein each of the production planning and knitting means for each process includes a production planning and knitting exchanging means for mutually exchanging the production planning and knitting formed by each of the production planning and knitting means for each production. .

In the present invention, the production schedules organized by the process-specific production schedule organizing means are mutually exchanged. According to a fifth aspect of the present invention, there is provided a production plan compiling device, comprising: a specification information management unit including a specification information storage unit for storing specification information including order item information and a manufacturing method of the order item; and a specification stored in the specification information storage unit. In a steel production planning and knitting apparatus having a casting process production plan knitting means for knitting a casting process production plan that satisfies constraints set in advance based on information and a rolling process production plan knitting means for knitting a rolling process production plan, A scenario storage unit storing a plurality of scenarios which are production planning procedures in which the production plan forming means forms a casting process production plan and a rolling process production plan forming means forming the rolling process production plan; and a plurality of scenarios stored in the scenario storage unit. Based on the scenario selected from the above, the casting process production plan composition means prepares the casting process production plan, and the rolling process production plan composition means prepares the rolling process production plan. And a scenario execution unit for outputting a command for executing a plan formation. The production plan formation management unit includes a casting process production plan formation unit and a rolling process production plan formation unit. Replacement of information If a scenario with "Yes" is selected, and if there is detailed information that does not satisfy the constraints of the process in the detailed information included in the initially organized process production plan, the detailed information is replaced. The detail information management unit reselects the detail information that satisfies the constraint condition from the detail information stored in the detail information storage unit when the detail information management unit receives the replacement request for the detail information from the detail information supplement processing unit. And a detailed information selection processing unit for transferring the detailed information to the detailed information compensation processing unit.

According to the present invention, if the constraints of the production process are not satisfied in accordance with the scenario, the detailed information is supplemented to make an order and a steel production plan that satisfies the constraints of each process. In the production planning / organizing apparatus according to the sixth invention, the scenario storage unit includes at least: 1. Automatic knitting scenario that starts knitting of a production plan from selection of detailed information 2. Item fixed knitting scenario for knitting a production plan based on item information selected in advance. A production order fixed knitting scenario in which a production plan is organized by fixing the production order in a production lot is stored.

According to the present invention, at least three types of scenarios are stored in the scenario storage unit. In the production planning and knitting apparatus according to the seventh invention, the scenario storage unit includes at least rolling process production planning and knitting means, casting process production planning and knitting means, casting process production planning and knitting means, and rolling process production. The execution is performed in the order of the planning means, and when the first rolling process production planning means and the casting process production planning means are executed, compensation is performed by the detail information compensation processing unit, and when the last rolling process production planning means is executed, the detail information is supplemented. A scenario in which compensation by the processing unit is not performed is stored.

According to the present invention, a casting and rolling production plan in an ironworks that satisfies the detailed information and the constraints of the rolling process and the casting process is fully automated. In the production plan knitting apparatus according to the eighth invention, the scenario storage unit executes at least the rolling step production plan knitting means and the casting step production plan knitting means in the order of the casting step production plan knitting means and the rolling step production plan knitting means. Then, a scenario is stored in which the detail information compensation processing unit compensates when executing the casting process production planning means, and does not perform compensation when performing the rolling process production planning means.

In the present invention, a production plan that satisfies the restrictions of the rolling process and the casting process is formed based on the detailed information incorporated in the rolling process production plan forming means in advance.
In the production planning and knitting apparatus according to the ninth aspect, the scenario storage unit stores at least the rolling process production planning and knitting means and the casting process production planning and knitting means in the order of the casting process knitting production planning and the rolling process production planning knitting means. A scenario is stored in which the execution of the casting process production plan organizing means and the rolling process production plan organizing means is not performed by the detailed information compensation processing section.

In the present invention, a production plan that satisfies the restrictions of the rolling process and the casting process is formed based on the detailed information incorporated in the rolling process production plan forming device and the casting process production plan forming device in advance. In the production plan knitting apparatus according to the tenth aspect, the scenario storage unit stores a scenario for knitting a production plan of the casting process without changing at least only the casting process production plan knitting means in the casting order.

In the present invention, the production plan of the casting process is organized without changing the casting order.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory view of a process from continuous casting to hot rolling in a steel mill according to an embodiment of the present invention, wherein a continuous casting process (hereinafter simply referred to as a casting process) 11 and a hot casting process are described. And a rolling process (hereinafter simply referred to as a rolling process) 12. Casting process 11 is performed by ladle L to tundish T
And a roll R for guiding a slab S drawn from the mold M, and a shear C for cutting the slab S to a predetermined length.

In the rolling step 12, a rough rolling mill A for roughly rolling a slab S cut to a predetermined length by a shear C and a thin steel sheet (strip) (hereinafter referred to as a rolled steel sheet) having a desired product thickness are formed. It comprises a finish rolling machine Y for finish rolling and a winder B for winding a rolled steel plate that has been finish rolled into a coil. In casting process 11, the amount of molten steel for one ladle is reduced to 1
In some cases, the slab S is manufactured by continuously casting several charges in the casting step 11. The type of molten steel, that is, the type of steel is determined by the components and amounts of carbon, silicon, manganese, and the like contained in the molten steel, and the steel type is determined in a converter (not shown) or the like which is a pre-process of the casting process 11. Created in charge units. In addition, one casting unit may include a plurality of steel types. For example, one casting unit may be constituted by eight charges including Class A steel for six charges and Class B steel for two charges.

The production schedule formation in the casting process 11 (hereinafter simply referred to as a casting process production plan formation) is to determine the following (1) to (4). (1) Casting order of the slab S in one casting unit. (2) Arrangement order of the slab S in one casting unit. (3) Steel type and molten steel amount for each charge. (4) A blowing method in a converter step (not shown) which is a step before the casting step 11.

The production planning in the rolling process 12 (hereinafter simply referred to as the rolling process production planning) is to determine the following (1) and (2). (1) The rolling order of the slab S in one rolling unit. (2) Arrangement order of rolled steel sheets in one rolling unit. In addition, one slab S does not need to correspond to one rolled steel plate, and one slab S may correspond to a plurality of rolled steel plates.

Normally, one casting unit is associated with one or more rolling units. The reason for associating the two units is to improve the production efficiency by performing rolling before the temperature of the slab S after casting decreases. For example, a case in which one casting unit composed of a total of eight charges of A steel type 6 charges and B steel type 2 charges is cast as a slab S in the casting step 11 and a rolled steel sheet is manufactured in the rolling step 12 as one rolling unit of a specific rolling type There is also.

As described above, since the production processes 11 and 12 of the casting unit and the rolling unit are linked, the production plan formation of the casting process and the production plan formation of the rolling process are made independent, and a production plan which is convenient for each is prepared. Therefore, it is necessary to draft a production plan so that the casting process 11 and the rolling process 12 have consistency. The whole process production plan formation considering the consistency between the casting process production plan formation and the rolling process production plan formation is referred to as V lot formation.

The structure of the casting unit and the rolling unit, that is, the number of charges for each steel type of the casting unit, the rolling unit and its rolling type associated therewith, depend on the amount of tapping from a blast furnace (not shown), inventory status, and equipment. It is determined in advance in consideration of the operation plan, order status, and the like. There are the following C-1 to C-5 as restrictions when executing the casting process production planning. C-1: The slab S corresponding to the order of the steel type to be cast must be allocated. C-2: The difference between the maximum width and the minimum width of the slab in the casting unit must be not more than a certain amount, and the slab S is as small as possible.
The fluctuation of the width difference between them must be reduced.

For example, if the maximum width difference constraint is 600 mm, a slab having a width of 1000 mm and a slab having a width of 1800 mm cannot be allocated to one casting unit. C-3: When casting different steel types in one casting unit, the quality of the changed portion (seam portion) of the steel type deteriorates, so that a high-quality slab S cannot be arranged in this portion.

The portion where the steel type is changed means a portion from the rear end 2 m of the preceding slab to the front end 4 m of the succeeding slab. C-4: Maximum weight of one charge (for example, 300 to 35)
Slabs S with a weight exceeding 0 ton) cannot be allocated. For example, when the maximum amount of molten steel per charge is 350 tons, if the allocation of 330 tons for one charge has already been completed, it is possible to allocate one more 15-ton slab. However, two 15-ton slabs cannot be allocated. It is possible to allocate two 10-ton slabs. C-5: The amount of molten steel cast with one charge is set to the maximum amount of molten steel (3
50 tons) and as close as possible to 350 tons.

Further, there are the following R-1 to R-3 as restrictions when executing the rolling process production planning. R-1: The rolling type is determined for each slab S according to characteristics such as quality and size of the order. R-2: Rolled steel sheets are arranged in order of width. If the widths are the same, the rolled steel sheets are arranged in order of increasing thickness. R-3: The change in the thickness of the rolled steel sheet must not be abrupt. For example, the thickness of the succeeding rolled steel sheet must be at least 70% of the thickness of the preceding rolled steel sheet.

Further, there is the following T-1 as a constraint between the casting step 11 and the rolling step 12. T-1: The casting order and the rolling order are not changed as much as possible. FIG. 2 is a block diagram of an embodiment of the production planning and organizing apparatus according to the present invention, which comprises production planning and organizing management means 20 for supervising all operations of the apparatus, order information from a user, and production condition information of the ordered item. A detailed information management means 21 for storing detailed information and selecting detailed information based on predetermined conditions; a casting process production plan forming means 22 for organizing a casting order by a continuous casting machine and determining a component value and a steel making method for each charge; And a rolling process production planning and knitting means 23 for knitting the slab rolling order by the hot rolling mill.

The configuration of each function will be described below in detail.
The production plan organization management means 20 includes a scenario storage unit 201,
And a scenario execution unit 202. The scenario storage unit 202 is a part that stores a scenario, which is a procedure for planning a production plan by the production plan organization device according to the present invention. Further, the scenario executing unit 201 selects an appropriate scenario from the scenario storage unit 202 based on a start command from an operator or another system, and according to the selected scenario, the detailed information management unit 21 and the continuous casting process production plan formation This is a part for issuing a start-up instruction to the means 22 and the rolling process production plan composition means 23 to compose a production plan.

FIG. 3 is a diagram showing the configuration of a scenario. For example, it is assumed that the following four types of scenarios are stored. Scenario 1: Fully automatic V lot formation This is a scenario in which the production planning of the casting process and the rolling process is performed fully automatically, and is performed in the following order. Step 1: An execution instruction is issued to the specification information management means 21 to select, from the stored specification information, specification information that satisfies the specifications of a predetermined casting unit and rolling unit. That is, a predetermined amount, for example, A steel grade 6 charge, B, so as to satisfy the delivery date and the constraints C-1, C-5, and R-1.
The detailed information of the specific rolling type, for example, the rolling type U, corresponding to the steel type 2 charge is selected. Step 2: Execute the production planning of the rolling process for determining the rolling order of the rolled steel sheet corresponding to the selected detailed information.

At this time, "specification added" is designated. Accordingly, in the case of violating any of the above restrictions R-2 and R-3, the detailed information in which the restriction has been eliminated by inserting a new rolled steel sheet into the restriction violating portion in the rolling unit is described in the detailed report. It is selected again from the management means 21. Step 3... Perform a casting process production plan formation that determines the casting order of the slab S based on the detailed information organized in Step 2.

At this time, "replacement of specifications" is designated.
As a result, when any of the above constraints C-1 to C-5 is violated, new detailed information capable of resolving the restriction is re-selected from the detailed information management means 21. If -4 is violated, the unnecessary slab S is removed from the casting unit. Step 4... Since there is a possibility that the constraints R-1 to R-3 and T-1 may not be satisfied due to the replacement of the slab S in Step 3, the rolling process production planning is executed again. At this time, "no specification replacement" is designated in order to prohibit reselection from the bright information detail management means 21. Scenario 2: Simple full-automatic V lot formation This scenario is a scenario in which the production plan formation of the casting process and the rolling process is performed fully automatically, as in scenario 1, but the predetermined casting unit is a specific casting unit. If it is composed of one steel type, for example, E steel type with 10 charges,
Since it is assumed that the required properties and size of the rolled steel sheet after rolling are substantially uniform, it is assumed that the constraints R-2 and R-3 are easily satisfied, and from the viewpoint of efficient knitting processing, The V lot formation is executed in a procedure simplified compared with the scenario 1. Step 1: The production plan organization management means 20 issues an execution command to the specification information management means 21 and satisfies predetermined specifications of the casting unit and the rolling unit from the stored specification information. Select the item information.

That is, the delivery date, constraints C-1, C-2, C-
5, the amount of detailed information of the rolling type corresponding to the A steel type 6 charge and the B steel type 2 charge is selected so as to satisfy R-1. Step 2: A casting process production plan formation for determining the casting order of the slab S based on the detailed information selected in Step 1 is executed.

At this time, "exchange of specifications" is designated.
As a result, when any of the constraints C-1 to C-5 is violated, new detailed information capable of resolving the restriction is re-selected from the detailed information management unit 21. If it violates 4, remove unnecessary slabs from the casting unit. Step 3 ... For the slab S knitted in step 2,
The rolling process production plan composition is executed so that R-1 to R-3 and T-1 are satisfied, and the rolling order is determined. At this time, "no specification replacement" is designated to prohibit reselection from the bright information management means 21. Scenario 3: V lot formation without replacement of details This scenario is performed by, for example, fully automatic V lot formation or manually forming a casting process production plan and a rolling process production plan, and then manually by an operator from the viewpoint of delivery date. When the slab S or the rolled steel plate incorporated in the casting unit or the rolling unit is removed or the slab S or the rolled steel plate is added to the casting unit or the rolling unit, that is, in the casting unit or the rolling unit. Is used to rearrange the slab S or the rolled steel sheet in the casting unit or the rolling unit so as to satisfy the constraint when there is a change in the detailed information assigned to. Step 1 ... Constraining the casting order within the casting unit C-1 to C-
In order to determine so as to satisfy No. 4, a casting process production plan composition is executed.

At this time, "no specification replacement" is designated to prohibit reselection from the specification information management means 21. Step 2: The order of rolling within the rolling unit is determined by the above constraints R-2, R
In order to make changes so as to satisfy -3 and T-1, rolling process production planning is executed. At this time, "no specification replacement" is designated to prohibit reselection from the specification information management means 21. Scenario 4: Casting knitting without changing the casting order This scenario is based on, for example, fully automatic V-lot knitting or manual knitting of a casting process production plan and a rolling process production plan, followed by an operator from the viewpoint of the converter process and the casting process. Manually changes the arrangement order of the slabs in the casting unit, recalculates the component values of carbon, silicon, manganese, etc. for each charge and the charge weight based on the quality of the slab S allocated to the charge, and Used to re-determine the steelmaking method in the process. Step 1: Execute the casting process production plan composition for the result of the change in the arrangement order of the slabs S, and determine the weight of the charge,
Recalculate the values of the contained elements and determine the steelmaking method.

At this time, "no specification replacement" is designated to prohibit the change of the slab casting order. The specification information management unit 21 includes a specification information storage unit 211 and a specification information selection processing unit 212. Statement information storage unit 211
Indicates that the order P from the customer is stored as detailed information represented by, for example, the next item.

P {H, L, t, W, K, Q, D} where H is the plate width (millimeter) L is the plate length (millimeter) t is the plate thickness (millimeter) W is the weight (ton) K Is the steel type Q is the quality characteristic and the production method based on it D is the delivery date.

The detailed information selection processing section 212 stores detailed information satisfying the conditions specified by the production plan composition management means 20, the casting process production plan composition means 22 and the rolling process production plan composition means 23 in the detailed information storage section 211. Select from the stored detailed information. For example, in scenario 1, the production plan organization management means 20 sets the following conditions in step 1. 1. 1. Scheduled casting date D _L Steel type and its weight.

For example, when the casting unit is composed of Class A steel 6 charge and Class B steel 2 charge, the steel type values are set to K _A and K
In _B, (corresponding to constraint C-1 and C-5) which W is set to _A and W _B weight. 3. Setting the rolling type T _R (corresponding to the restriction R-1). Next, detailed information selecting unit 212, from the order P stored, for example, to select only those orders amount corresponding orders P satisfying the following three conditions to W _A and W _B. 1. Delivery date D is before or close to (scheduled casting date D _L + production period). 2. Those steels value K is K _A or K _B (corresponding to the constraint C-1). 3. Rolling type T _R those included in the set of possible rolling type obtained from the quality characteristics, and a manufacturing method Q based thereon (corresponding to constraint R-1).

In Step 2 of Scenario 1,
In order to select a new specification, that is, to select and add a rolled steel sheet, in order to eliminate restrictions, the following conditions 1 to 3 are specified. 1. Plate width H _P 2 of rolled steel. Minimum thickness t _MIN of rolled steel sheet and maximum thickness t
_MAX 3. Number N _P of the rolled steel plate to be selected next, the account information selection processing unit 212, from the order P already stored, selects the order P satisfying the following 1 and 2 only N _P sheets. 1. 1. t _MIN <t <t _MAX H = H _P rolling process production planning and knitting means 23
1. It is composed of a specification information supplementation processing section 232 and a rolling knitting information storage section 233.

The rolling knitting processing section 231 knits the production plan by arranging the rolled steel sheets in the rolling unit so as to satisfy the constraints R-2 and R-3, and stores the result in the rolling knitting information storage section 233. I do. For example, in Step 2 of Scenario 1, the rolled steel sheets corresponding to the order P selected by the detail information selection processing unit 212 of the detail information management means 21 in Scenario 1 are arranged in ascending order of the strip width so as to satisfy the constraint R-2. Rearranges. If the plate widths are the same, the sheets are rearranged in the order of thickness.

Next, it is checked whether the rearranged result satisfies the constraint R-3, and a portion that does not satisfy the constraint R-3 is found. If “detailed addition” is selected in the scenario, the detail information supplement processing unit 232 is activated. The detailed information supplement processing unit 232 is a sheet width of a rolled steel sheet that needs additional charging,
The sheet thickness range and the number of sheets are designated, and a search and selection are instructed to the detail information selection processing section 212 of the detail information management means 21. The statement information selection processing unit 212 is a statement information storage unit 211
, A rolled steel sheet that meets the designated condition is searched and selected, and transferred to the detailed information supplement processing unit 232, where the detailed information supplement processing unit 232 newly selects a rolled steel sheet that violates the constraint R-3. Is added to eliminate the constraint R-3.

The rolling knitting information storage section 233 stores information on the rolled steel sheet in the rolling knitting processing section 231 and the detail information supplementing processing section 232 or in the rolling unit that has been manually knitted. The casting process production plan knitting means 22 includes a casting knitting processing section 221, a detailed information supplementing processing section 222, and a casting knitting information storage section 223.

The casting knitting processing section 221 restricts the casting order of slabs manufactured by the continuous casting machine to C-1 to C-5.
Is determined, and the component value and charge weight for each charge are calculated, and a steelmaking method in a converter facility or the like is determined. For example, in Step 3 of Scenario 1, the slabs knitted by the rolling process production planning knitting means in Step 2 are arranged so as to satisfy the constraints C-1 to C-5 to knit a casting unit, and a casting knitting information storage unit 223.

At this time, it is checked whether or not the constraint C-3 is satisfied. If the constraint is not satisfied and “replacement of specification” is specified in the scenario, the specification information supplement processing unit 222 It instructs the specification information selection processing unit 212 of the specification information management means 21 to select a new slab having the quality characteristic Q satisfying the constraint C-3. The detailed information selection processing unit 212 searches for and selects a slab that satisfies the condition, and transfers the slab to the detailed information supplement processing unit 222.
The specification information supplementing processing unit 222 incorporates the passed new slab into the casting unit so as to satisfy the constraint C-3.
If the new incorporation increases the weight of one charge to violate constraint C-4, another slab is removed from the casting unit.

The casting / knitting information storage unit 223 stores component information, weight, steel making method, and the like of the slab and the charge in the casting unit which is knitted by the casting / knitting processing unit 221 and the detailed information supplementing processing unit 222 or manually. FIG.
1 is an example of a hardware configuration diagram of a production planning and organizing apparatus according to the present invention, wherein a CPU 41,
It comprises a memory 42, a hard disk 43, a keyboard and mouse 44, and a display 45.

Here, the scenario storage unit 201, the detailed information storage unit 211, the casting knitting information storage unit 223, and the rolling knitting information storage unit 233 exist on the memory 42. Scenario execution unit 202, detailed information selection processing unit 212, casting and knitting processing unit 221, detailed information compensation processing unit 222, rolling and knitting processing unit 2
31, the program execution code of the detailed information supplement processing unit 232 is also stored in the memory 42, and the CPU 41 reads and executes the program execution code.

The hard disk 43 stores information of the scenario storage unit 201, the detailed information storage unit 211, the casting knitting information storage unit 223, and the rolling knitting information storage unit 233 as necessary. In addition, the keyboard and mouse 44
The operator designates one of the scenarios stored in the scenario storage unit 201, for example, the fully automatic V-lot formation of the scenario 1, and inputs a start command of the production plan formation, or further manually operates after the formation. Is used to input an instruction to remove a slab from a casting unit or change the casting order.

The display 45 is, for example, a scenario 1
The contents of the casting knitting information storage unit 223 and the rolling knitting information storage unit 233, which are the results of the fully automatic V lot knitting, are displayed on a screen and used to inform an operator or the like. Although the above description has been made on the case where a so-called “stand-alone type” system is applied, the so-called “client-server type” system via a network can constitute the production planning and organizing apparatus according to the present invention.

In this case, an input device such as a keyboard and a mouse and a display device such as a display are used as clients, and the production plan organization management means 20 and the detailed information management means 2 are used.
1. The production planning and knitting apparatus main body composed of the casting process production planning and knitting means 22 and the rolling process production planning and knitting means 23 is suitably allocated to a server. The execution procedure of each scenario will be described below using specific numerical values.

First, the following information is input using the keyboard and the mouse 44 in order to set the target for the V lot formation from now on. Configuration of casting unit: steel type: A (for 6 charges), B (for 2 charges) Configuration of rolling unit: rolling type = U type Then, when scenario 1 is executed, display 4
Using the keyboard and mouse 44 from the scenario menu displayed in 5, the scenario 1 is selected, and the execution of the scenario 1 is started. That is, the scenario execution unit 202
Reads the contents of the scenario 1 from the scenario storage unit 201 existing on the memory 42 and starts executing the scenario along with the contents. Step 1: The scenario execution unit 202 executes the detailed information selection processing unit 212
Start The statement information selection processing unit 212 is provided in the memory 42
Based on the casting unit and the corresponding rolling unit from the specification information stored in the specification information storage unit 211 existing above, the specification information is set so as to satisfy the delivery date, constraints C-1, C-5, and R-1. Select Step 2: 1. The scenario execution unit 202 activates the rolling knitting processing unit 231 with an instruction to add a detail, using the detail information selected in step 1 as an argument. And rolling knitting processing section 2
Reference numeral 31 rearranges the passed detailed information so as to satisfy the constraint R-2, that is, in ascending order of the plate width, and, when the plate widths are the same, in ascending order of the plate thickness.

2. After the sorting is completed, the constraint R-3
Is satisfied, that is, whether or not the thickness of the succeeding rolled steel sheet is 70% or more of the thickness of the preceding rolled steel sheet, and a portion that is not satisfied is found. 3. When there is a place where the constraint R-3 is not satisfied,
By executing the specification information supplementing processing unit 232, the specification information selection processing unit 212 sends a rolled steel sheet satisfying the constraint R-3, that is,
A rolled steel sheet whose thickness is 70% or more of the thickness of the preceding order is searched. Thereby, the detailed information selection processing unit 212
Selects the detailed information satisfying the constraint R-3 from the detailed information storage unit 211 existing in the memory 42 and transfers it to the detailed information supplement processing unit 232. Statement information compensation processing unit 232
Inserts this rolled steel sheet between the original rolled steel sheets.

4. The rolling knitting result created by the above processing is stored in the rolling knitting information storage unit 2 existing in the memory 42.
33. Step 3: 1. The scenario execution unit 202 activates the casting / knitting processing unit 231 with an instruction to replace the specification, using the specification information corresponding to the rolled steel sheet formed in step 2 as an argument. The casting knitting processing section 231 converts the given detailed information into C-1 to C-1.
It arranges in a casting unit so that C-5 may be satisfied. that time,
It is checked whether the constraint C-3 is satisfied, that is, whether or not a high-quality order is assigned to the switching part of the steel type, and a part that is not satisfied is found.

2. If there is a portion where the constraint C-3 is not satisfied, the detailed information supplement processing unit 232 is executed to cause the detailed information selection processing unit 212 to search for a slab satisfying the restriction C-3. Add to 3. The weight of each charge is limited by the added result C
-4 is satisfied, that is, the weight does not exceed 350 tons.

4. When the constraint C-4 is not satisfied, a slab that does not violate other constraints, has a delivery time, and satisfies the constraint C-5 as much as possible is selected, and is replaced with a slab that does not satisfy the constraint. When there are a plurality of slabs to be replaced, the slab with the latest delivery date is selected, and when the slab dates are the same, the lightweight slab is selected.

[0062] 5. The casting knitting result stored in the memory 42 is stored in the memory 42 with the casting knitting result created by the above processing.
23. Step 4: 1. The scenario execution unit 202 activates the rolling knitting processing unit 231 with an instruction to replace the details using the detailed information corresponding to the slab knitted in step 3 as an argument.

The rolling knitting processing section 231 includes the constraints R-1 to R
The rolling order of the rolled steel sheet in the rolling unit is rearranged so as to satisfy -3 and T-1. At this time, no new detailed information is added or replaced. 2. The rolling knitting result created by the above processing is stored in the rolling knitting information storage unit 233 existing in the memory 42.

3. The final casting and rolling knitting results are displayed on the display 45. Scenario 2 is a scenario in which the production planning of the casting process and the rolling process is performed fully automatically, as in scenario 1. However, the predetermined casting unit is a specific steel type, for example, 10 types of only E type.
Since it is assumed that the required characteristics and size of the rolled steel sheet are substantially uniform when the rolled steel sheet is constituted by the charge, the constraints R-2 and R-3 are easily satisfied, so that the efficiency of the knitting process is improved. From a viewpoint, V lot formation is executed in a procedure simplified as compared with scenario 1.

The parameters set in scenario 2 are, for example, as follows. Configuration of casting unit: steel type = E (for 10 charges) Configuration of rolling unit: rolling type = Y type When executing this scenario 2, use the keyboard and mouse 44 from the menu of the scenario displayed on the display 45. Then, the scenario 2 is selected, and the execution of the scenario 2 is started.

That is, the scenario execution unit 202
The contents of the scenario 2 are read from the scenario storage unit 201 existing on the server 2 and the following execution is started. Step 1: The scenario execution unit 202 determines that the detailed information selection processing unit 21
Start 2 The statement information selection processing unit 212 is provided in the memory 4
2. Based on the configuration of the casting unit and the rolling unit corresponding to the casting unit, the detailed information satisfying the delivery date, the constraints C-1, C-5, and R-1 is selected from the detailed information storage unit 211 existing on the second. Step 2: 1. The scenario execution unit 202 activates the casting / knitting processing unit 231 with an instruction to replace the specification, using the specification information selected in step 1 as an argument. Casting knitting processing unit 231
Arranges the given detailed information in the casting unit so as to satisfy C-1 to C-5. At that time, it is checked whether the constraint C-3 is satisfied, that is, whether a high-quality order is allocated to the steel type switching portion, and a portion where the constraint C-3 is not satisfied is found.

2. If there is a part where the constraint C-3 is not satisfied, the detailed information supplementing unit 2 is executed to make the detailed information selecting unit 212 search for a slab satisfying the restriction C-3. Add to 3. The weight of each charge is limited by the added result C
-4 is satisfied, that is, the weight does not exceed 350 tons.

4. If the constraint C-4 is not satisfied, select a slab S that does not violate other constraints, has a delivery time, and satisfies the constraint C-5 as much as possible, and removes the slab S from the casting unit. . If there are a plurality of slabs that can be removed, the slab with the latest delivery date is removed. If the same delivery date, remove the lightweight slab. 5. The result of the casting knitting created by the above processing is stored in the casting knitting information storage unit 223 existing in the memory 42. Step 3: 1. The scenario execution unit 202 activates the rolling knitting processing unit 231 with an instruction to replace the details using the detailed information corresponding to the slab knitted in step 3 as an argument. The rolling knitting processing unit 231 includes the constraints R-1 to R-3 and T-1.
The rolling order of the rolled steel sheet in the rolling unit is rearranged so as to satisfy the following. At this time, addition or replacement of detailed information is not performed.

2. The rolling knitting result created by the above processing is stored in the rolling knitting information storage unit 2 existing in the memory 42.
33. 3. The final casting and rolling knitting results are displayed on the display 45. Scenario 3 is a process in which the casting unit and the rolling unit are knitted once, and then the operator manually incorporates or removes the order from the viewpoint of the delivery date, specifies the order to be incorporated into the casting unit or the rolling unit, and then performs casting and rolling. Are optimized, and the rolling knitting process is immediately executed without executing the detailed information selection.

Scenario 3 is the same as scenario 1 below. Configuration of casting unit: steel type = A (for 6 charges), B (for 2 charges) Configuration of rolling unit: rolling type = U type When executing scenario 3, from the menu of the scenario displayed on display 45, Using the keyboard and mouse 44, select scenario 3 and start execution of scenario 3. That is, the scenario execution unit 202 reads the contents of the scenario 3 from the scenario storage unit 201 existing on the memory 42, and starts executing the scenario. Step 1: The scenario execution unit 202 activates the casting / knitting processing unit 221 with an instruction to replace the statement. The casting knitting processing unit 221 sets a slab stored in the casting knitting information storage unit existing in the memory 42 as a knitting target, and sets a constraint C-
Rearrange the slabs so as to satisfy 1 to C-4.

Regarding the restriction of C-1, for example, steel type A
If the slab of the steel type B is arranged in the charge of the steel type B, the slabs are rearranged so as to be arranged in the charge of the steel type B. 2. The result of the casting knitting created by the above processing is stored in the casting knitting information storage unit 223 existing in the memory 42. Step 2: 1. The scenario execution unit 202 activates the rolling knitting processing unit 231 with an instruction to replace the statement. The rolling knitting processing unit 231 sets the rolled steel sheet stored in the rolling knitting information storage unit existing in the memory 42 as a knitting target and sets a constraint R
The rolling order of the rolled steel sheet in the rolling unit is rearranged so as to satisfy -1 to R-3 and T-1.

2. The rolling knitting result created by the above processing is stored in the rolling knitting information storage unit 2 existing in the memory 42.
33. 3. The final casting and rolling knitting results are displayed on the display 45. When executing the scenario 4, the user selects the scenario 4 from the menu of the scenario displayed on the display 45 using the keyboard and the mouse 44, and starts the execution of the scenario 4.

That is, the scenario execution unit 202
The content of the scenario 4 is read from the scenario storage unit 201 existing on the storage device 2, and the execution of the scenario is started along the read content. In Scenario 4, after the casting unit or the rolling unit is knitted once, when the operator manually changes the arrangement order of the slabs in the casting unit from the viewpoint of, for example, a steelmaking process, the slab allocated to the charge is changed. It is for recalculating the component value of carbon, silicon, manganese, etc. and charge weight for each charge based on each quality, and re-determining the steel making method in converter equipment, etc. The processing is not executed, and the casting knitting processing is immediately executed. Step 1 1. The scenario execution unit 202 activates the casting knitting processing unit 221 with an instruction to change the casting order. Further, the casting knitting processing unit 221 targets the slab stored in the casting knitting information storage unit existing in the memory 42 as a knitting object, without changing the slab arrangement order, without changing the weight of the charge,
Recalculate the values of the contained elements and determine the steelmaking method.

2. The casting / knitting information storage unit 2 existing in the memory 42 stores the casting / knitting result created by the above processing.
23. 3. The final casting and rolling knitting results are displayed on the display 45. In the above, the production planning of the casting and rolling process in the steel mill has been described. However, the present invention can be applied to any production line as long as one production line can be divided into a plurality of processes. .

[0075]

According to the production planning apparatus of the first invention, it becomes possible to automatically prepare a production plan that satisfies the detailed information and the constraints of each process according to the situation at the time of production planning. . According to the production planning device according to the second to fourth aspects of the present invention, when the specific detailed information does not satisfy the restriction of the individual production process, the production plan that satisfies the restriction is automatically made by supplementing the detailed information. It becomes possible to plan.

According to the production planning apparatus according to the fifth to tenth aspects of the present invention, it is possible to automatically draft a production plan of an iron making process that satisfies the order of a customer and the constraints of each process according to the production situation of a steel mill. Becomes possible. If the constraints of the casting process and the rolling process are not satisfied with the predetermined detailed information, it is possible to automatically draft a production plan of the casting process and the rolling process that satisfies the constraints by supplementing the detailed information. Become.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of a process from a process from continuous casting to a process of hot rolling.

FIG. 2 is a configuration diagram of an embodiment of a production planning and knitting apparatus according to the present invention.

FIG. 3 is a configuration diagram of a scenario.

FIG. 4 is a hardware configuration diagram.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 20 ... Production plan organization management means 201 ... Scenario storage part 202 ... Scenario execution part 21 ... Detailed information management means 211 ... Detailed information storage part 212 ... Detailed information selection processing part 22 ... Casting process production plan knitting part 221 ... Casting processing part 222 ... Detailed information supplement processing unit 223 ... Casting knitting information storage unit 23 ... Rolling process production plan knitting means 231 ... Rolling knitting processing unit 232 ... Detailed information supplementation processing unit 233 ... Rolling knitting information storage unit

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G06F 17/60 G06F 15/21 R (72) Inventor Toshiyuki Kiriishi 1 Nishinosu Oaza, Oita City, Oita Prefecture New Japan Inside the Oita Works of Steel Corporation (72) Kyoichi Niizawa, Inventor, Oita City, Oita, Oita, 1st place, Nishinosu F-term (reference) 3C042 RJ02 RL15 4E004 MC30 4E024 GG10 5B049 BB07 CC21 DD01 DD05 EE31 FF03 FF04 FF09 GG04 GG07

Claims (10)

[Claims] 1. A specification information management means including a specification information storage unit storing order item information and specification information including a manufacturing method of the order item, and preset based on the specification information stored in the specification information storage unit. A plurality of process-specific production plan forming means for forming a plurality of process production plans of a plurality of processes related to each other in the production process, wherein the process-specific production plan forming means comprises: A scenario storage unit that stores a plurality of scenarios that are production planning procedures for forming a production plan for each process; and a process planning unit for each process based on a scenario selected from the plurality of scenarios stored in the scenario storage unit. A production planning system further comprising: a production plan organization management means including: a scenario execution unit that outputs a command for executing production plan organization. Organized location. 2. The process according to claim 1, wherein the scenario storage unit specifies the step-by-step production plan organizing means for executing the production plan composition, the order of the production plan composition by the step-by-step production plan composition means,
2. The production planning and knitting apparatus according to claim 1, wherein at least two or more scenarios including information on the presence / absence of replacement of detailed information and designation of preconditions at the time of knitting execution are stored. 3. The plurality of process-specific production plan compiling means, wherein the scenario execution unit selects a scenario with replacement or addition of "existing" of detailed information and is included in a process production plan that has been firstly composed. A detailed information replacement unit that replaces or adds the detailed information when the detailed information that does not satisfy the constraint of the process is included in the detailed information to be processed. When receiving a request for replacement or addition of detailed information from the company, detailed information satisfying the constraint condition is reselected from the detailed information stored in the detailed information storage unit and transferred to the detailed information compensation processing unit 2. The production planning organization according to claim 1, further comprising a selection processing unit. 4. The production plan organization exchange means for mutually exchanging the production plan organization organized by each of the production plan organization means according to each of the step-by-step production plan organization means. The production planning and knitting apparatus according to any one of claims 1 to 7. 5. A specification information managing means including a specification information storage unit for storing order item information and specification information including a manufacturing method of the order item, and preset based on the specification information stored in the specification information storage unit. A casting process production plan knitting means for knitting a casting process production plan that satisfies the set constraints, and a rolling process production plan knitting means for knitting a rolling process production plan. Casting process production plan
A scenario storage unit storing a plurality of scenarios, which are production planning procedures in which the rolling process production plan forming means forms a rolling process production plan, and the scenario based on a scenario selected from the plurality of scenarios stored in the scenario storage unit. A casting process production planning means for outputting a command for executing the casting process production plan; and a rolling process production plan forming means for outputting a command for executing the rolling process production plan. Each of the casting process production plan formation means and the rolling process production plan formation means selects a scenario of “existence” of replacement of detailed information in the scenario execution unit, and the process production plan formed first. If there is detailed information that does not satisfy the constraints of the process in the detailed information included in the process, the detailed information is replaced by the detailed information When the specification information management unit receives a specification information replacement request from the specification information compensation processing unit, reselects specification information satisfying the constraint condition from the specification information stored in the specification information storage unit. And a detailed information selection processing unit for transferring the detailed information to the detailed information compensation processing unit. 6. The scenario storage unit according to claim 1, wherein: 1. Automatic knitting scenario that starts knitting of a production plan from selection of detailed information 2. Item fixed knitting scenario for knitting a production plan based on item information selected in advance. The production planning and knitting apparatus according to claim 5, wherein a production order fixed knitting scenario for knitting a production plan by fixing a production order in a production lot is stored. 7. The rolling stock production planning means, the casting process production planning means, the rolling process production planning means, at least the rolling step production planning means and the casting step production planning means. In the order of the means, when the first rolling process production planning means and the casting process production planning means are executed, compensation is performed by the detailed information compensation processing unit, and when the last rolling process production planning means is executed, 6. The production planning and organizing apparatus according to claim 5, wherein a scenario in which compensation is not performed by the detailed information compensation processing unit is stored. 8. The scenario storage unit executes at least the rolling step production plan forming means and the casting step production planning means in the order of the casting step production planning means and the rolling step production planning means. A scenario in which compensation is performed by the detailed information supplement processing unit when the casting process production planning unit is executed, and a scenario in which compensation is not performed by the detailed information supplement processing unit when the rolling process production planning unit is executed. 6. The production planning and organizing apparatus according to 5. 9. The scenario storage unit executes at least the rolling step production planning means and the casting step production planning means in the order of the casting step knitting production planning means and the rolling step production planning means. 6. A scenario in which compensation is not performed by the detailed information compensation processing unit when the casting process production planning means and the rolling process production planning means are executed.
2. The production planning and organizing apparatus according to 1. 10. The scenario storage unit according to claim 5, wherein the scenario storage unit stores at least a scenario for organizing a production plan of a casting process without changing a casting order only in the casting process production plan organizing means. Production planning system.