JP2756876B2 - Production management system in the steel industry - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material unit when a steel material is ordered additionally (indicating a minimum lot for manufacturing a steel material, hereinafter also referred to as "slab" or "coil").
The present invention relates to a production management system for the steel industry in which knitting is performed using a computer.

[0002]

2. Description of the Related Art Conventionally, a steel material manufacturer has adopted an order-made production system for the production of steel materials. That is, when an order is received from a customer, the production line is instructed to produce steel according to the order, and a predetermined amount of product of a predetermined size is delivered to the customer by a predetermined delivery date. In this case, a computer is used for production management from the viewpoint of efficiency and reliability of office work, so that products according to the order can be reliably delivered to customers by a predetermined delivery date.

[0003]

However, the above-mentioned conventional production management method has the following problems. That is, when an order is placed, the order information is input to a computer, and the production line is instructed to produce steel according to the order, and the production line performs knitting of material units according to the instruction to produce steel. To start. However, due to fluctuations in material weight or defective products that occur in each manufacturing process until the final product is obtained, products cannot be collected as planned in the final process, and only product re-production occurs. There are many. That is, for example, when processing is performed for a material unit knitting to produce five 20t (actually 20t + surplus) material units in order to process an order for a 100t steel material from a customer, and the process shifts to production of material units, In the case where one of the manufactured material units is reduced to 15t due to a change in the material weight in a furnace or the like, the material unit is again adjusted to manufacture the remaining 5t material units. It is necessary to organize (re-claim). At this time, conventionally, there is a material unit associated with an order for the same kind of steel material in a state of unextruded steel (a state in which material unit knitting has been performed but production has not yet started) with a surplus of 5t. However, even in the case where the steel unit is used, the material unit knitting for the production of the above 5t material unit is performed separately from the unexposed steel material unit, and the process is shifted to the production of the material unit. At this time, for example, a surplus of 5 t (half surplus) is added to the material unit to be knitted in consideration of a loss in the manufacturing process and the like, and a material unit of 10 t is formed.

[0004] Such generation of a small material unit (reduction of the size of a material unit) according to the reclaim reduces the yield and the basic unit. In addition, the surplus added to the material unit according to the re-billing causes overroll (unordered product) in the final process, which lowers the manufacturing efficiency of the ordered product.

Accordingly, an object of the present invention is to provide a production management system in the steel industry which can prevent the generation of small material units according to the reclaim as much as possible.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a production management system for the steel industry, which uses a computer to knit a material unit when an additional order for a steel material is received. Storage means for storing, for each material unit, information relating to the order and the potential surplus assigned to the material unit in the unexposed state, and referring to the storage means when the additional order is issued. The unexposed steel material unit detecting means for detecting the material unit in the state, and whether or not the additional order can be assigned to the material unit detected by the unexposed steel material unit detection means are determined by the manufacturing conditions. A first applicability judging means for judging whether or not they are the same, and whether or not the additional order can be allocated to the material unit detected by the unextruded steel material unit detecting means. Potential surplus of the material unit The second applicability judging means for judging based on the size of the steel material related to the additional order, and the additional surplus portion of the material unit according to the judgment result by the first and second applicability judging means. And material unit knitting means for allocating orders.

[0007]

According to the present invention, when there is a new order or an additional order such as an order relating to the above re-billing, the material unit in the unexposed state is detected by the unexposed material unit detection means, and the production condition is determined. The first and second applicability judging means judges whether an additional order can be assigned to the detected material unit in terms of the size of the potential surplus portion and the like. Then, as a result of the determination, if it is determined that an additional order can be allocated, the additional order is allocated to the potential surplus portion of the material unit. Here, “potential surplus” will be described. For example, the maximum manufacturable value per material unit is 15
In the case where the material unit pertaining to the order of the steel material is 10 t, considering only the cost of the steelmaking process alone, the material unit should be manufactured as 15 t which is the maximum possible value. 1 that is the maximum value that can be manufactured for a material unit
If it is manufactured as 5t, a surplus of 5t will be generated, and the loss will be large considering the total manufacturing cost. Therefore, in an actual manufacturing operation, a unit of material is manufactured as 10 t. As described above, although not actually occurring, the above-mentioned surplus 5t that is putting pressure on cost and the like is obtained.
Is called "potential surplus". The present invention is to effectively utilize the potential surplus by allocating a material unit for an additional order to the potential surplus.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing one configuration example of a production management system in the steel industry to which the present invention is applied. Production line 1
Is a facility for performing the process from tapping to shipping of a steel material, and includes each manufacturing process of slab production, hot rolled coil production, and cold rolled coil production.

The order input section 2 is for inputting an order from a customer, and includes, for example, customer information, size information such as product size and weight, delivery date information, etc. via a keyboard or the like. Is entered.

[0010] The work result acquisition unit 3 sequentially takes in work results such as the production status of a product in each production process of the production line 1 and sends out the acquired information to the data processing unit 5.

The work instructing section 4 sends information for instructing a predetermined work to the production line 1 based on the information obtained from the data processing section 5.

The data processing unit 5 comprises, for example, a CPU,
Various data processing is executed according to the program stored in the program memory 6.

The display unit 7 comprises, for example, a CRT and is controlled by the data processing unit 5 to display various information.

The order data storage memory 8 includes an order input unit 2
The order information input via the server is sequentially accumulated, and an order management database is constructed.

The various table storage memory 9 stores various tables to be described later.

The product progress data storage memory 10 stores various kinds of data necessary for knitting of material units and information indicating various work results taken from the production line 1 via the work result take-in section 3. Data and the like indicating the manufacturing status of the product of each order in each manufacturing process are stored.

The material progress data storage memory 11 stores data indicating the progress of manufacturing in units of material.

FIG. 2 is a diagram for explaining an outline of a process of tying the unexposed steel material unit and the additional order executed by the data processing unit 5.

Now, the additional order Y1 relating to re-billing and the like is in an unknitted state. At this time, the material unit knitting has already been completed, and the material unit U1 to which another order has been assigned is in an unknitted state. In this case, the data processing unit 5 first detects the material unit U1, and determines whether or not it is possible to allocate an additional order Y1 to the material unit U1.
In this determination, information such as the order quantity of the additional order Y1, the type of the product, the manufacturing conditions, the potential surplus of the material unit U1, the manufacturing condition, and the like are used. Order Y1 is assigned to U1.
Therefore, in this case, the additional order Y1 is not separately knitted in material units.

On the other hand, if it is determined that the assignment is impossible as a result of the above-mentioned determination, the data processing unit 5 sequentially detects other material units in a non-tapping state and assigns them to those material units. It is sequentially determined whether or not the assignment of the additional order Y1 is possible, and when an assignable combination is found, the additional order Y1 is assigned to the material unit.

As described above, the additional order Y1 is assigned to a material unit in an unleashed state without being separately knitted, and the additional order Y1 is knitted alone. In addition to solving the problem of miniaturization in the case of the production, it is possible to minimize the occurrence of unordered products in the final process due to the surplus part added at the time of manufacturing the material unit according to the additional order. it can.

Next, a data processing procedure in the data processing unit 5 for executing the above-described process of binding the unexposed steel material unit and the additional order will be described with reference to FIGS. In addition,
This data processing is executed when an additional order is input from the order input unit 2, but may be executed at an appropriate time by an instruction of an operator.

In this process, first, as shown in FIG. 7, the data processing unit 5 searches the unfinished material unit table 30 (see FIG. 4). This search is performed in the unorganized order stored in the unorganized order table 20 in FIG. 3 (in this case, the order management No. T1 of Y1-01 to Y3-0).
In order to search for a material unit to be assigned (order 1), an uncompleted material unit table 30 is searched sequentially from the top for each unorganized order. The unfinished material unit table 30 is a table created based on the data stored in the material progress data storage memory 11, and includes various types of material units which have already been formed in the material unit knitting but are in the unextruded state. The information indicates the material unit No. for specifying the material unit. (U1 to U4). The unorganized order table 20 is created based on the data stored in the product progress data storage memory 10, and the information on the orders for which the material unit organization has not yet been performed specifies each order. No. of order management No. , Contract, additional No. It is written every time.

Next, the data processing unit 5 extracts necessary data from the data written in the unfinished material unit table 30 and creates the extracted data in unorganized order units as shown in FIG. The process moves to the connection possibility table 40, and it is determined whether or not connection between each order and each material unit is possible.

When determining whether or not the connection is possible, first, the data processing unit 5 sets an evaluation value on the connection availability table 40 using the connection evaluation table 50 shown in FIG. This evaluation value is a value used to determine whether the order in the unknitted state and each material unit in the untapped state may be the same material unit. In the connection evaluation table 50, the order management No. For each combination, connection specification information indicating various specifications serving as check items of manufacturing conditions and an evaluation value for each combination are stored. It should be noted that the order management No. Is the order management No. of the unorganized order stored in the table 20. And table 3
0, which represents the order currently assigned to each material unit recorded in the heterogeneous order management NO information column of No. 0.
It is a combination with In addition, “0” as the evaluation value indicates the best combination with the same use (production condition) of the orderer and the ordered product, and “1” indicates the combination with the same manufacture condition but different orderer. "2" indicates a combination in which the orderer is different and the manufacturing conditions are largely different, and the smaller the evaluation value, the better.

In the example of FIG. 5, the data processing unit 5 stores an order management No. for an unorganized order. T1 and the order management No. of the order currently assigned to the material unit U1. T1, T2
(Refer to the order management NO column of the table 40) and refer to the table 50 for each combination with “0” as the evaluation value.
And "1" are set respectively.

Next, the limit value is written into the table 40. This limit value is a value recorded in the limit value column of the unorganized order table 20. When processing each order, the limit value is assigned to a material unit in a non-tapping state (virtual half allocation) or newly set. This is a value for determining whether to perform material unit knitting.

This limit value is obtained as follows. That is, in FIG. 3, the total number of slabs of each order (for example, “1” for the order of T1-Y1-01) is calculated from the maximum value (“2” in this example) in the total number of slabs column.
After subtracting 1, 1 is added to obtain the value in the column of the total number of slabs (reverse order). If the value obtained in this way is large, the order currently being processed (T1-Y1-0
This indicates that there are many other unprocessed orders other than 1). In this case, there are many other orders to be assigned to the unexposed material units. It is preferable to newly form a material unit without allocating the material unit. If the value obtained in this way is 1, "3" is set as the limit value,
If it is 2, "1" is set as the limit value, and if it is larger than 3, "0" is set as the limit value. Therefore, the larger the limit value is, the stronger the allocation orientation to the unextruded material unit is, and the smaller the limit value is, the stronger the orientation is to perform new material unit knitting without assigning to the material unit.

When the data processing unit 5 completes the writing of the limit value into the table 40, the data processing unit 5 determines that the limit value ≧ the evaluation value and the unorganized order in which the value obtained by subtracting the evaluation value from the limit value is the maximum. A combination of unexposed steel material units is searched for on the connection availability table 40, and an application mark “1” is recorded in an application mark column for the combination. The combination found in this way is a combination in which the order related to the combination has a strong assignment orientation to the material unit in the unexposed state, and there is no inconvenience even if the assignment to the material unit related to the combination is made. is there.

After searching for such a combination, the data processing unit 5 determines the order quantity of the order related to the combination (see the design product unit weight column of the unorganized order table 20) and the surplus amount of the material unit related to the combination. (See the potential surplus column of the unfinished material unit table 30), and if the assignment is possible, it is determined that the allocation is possible.

When it is determined that the allocation is possible, the incomplete material unit table 30 is determined based on the determination result.
Edit the data and assign the order corresponding to the material unit. The order assigned in this manner is represented by the different kind 1 contract information column of the table 30. Note that the information shown in parentheses in each column of the drawing is information written as a result of this editing.

On the other hand, if it is determined that the order cannot be allocated, the material unit corresponding to the order is added to the table 30 as an unfinished material unit. This means that a new material unit knitting has been performed for the order.

When the above processing is completed, the data processing unit 5
Updates the data of each of the memories 8 to 11 based on the updated data of the unfinished material unit table 30, and ends the tying process of the unwelded unit and the additional order. Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and various effective changes can be made based on the technical idea of the present invention.

[0034]

As described above, according to the present invention, when there is a new order or an additional order such as an order relating to the above re-billing, the detection of the material unit in the unburdened state is performed, and the manufacturing conditions are changed. If it is possible to assign an additional order to the material unit in terms of the size of the potential surplus portion, an additional order is assigned to the potential surplus portion of the material unit. Therefore, even if a recharge occurs, the order related to the recharge is allocated to the unsoldered material unit as much as possible, so that the occurrence of the small material unit accompanying the occurrence of the recharge is suppressed, and the yield is reduced.
It is possible to prevent a reduction in the basic unit, and to minimize the occurrence of unordered products in the final process due to a surplus portion added at the time of manufacturing the material unit according to the reclaim.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration example of a production management system in the steel industry to which the present invention is applied.

FIG. 2 is a diagram for explaining an outline of a process of tying an unexposed steel material unit and an additional order.

FIG. 3 is a diagram illustrating a configuration of an unorganized order table.

FIG. 4 is a diagram for explaining a configuration of an unfinished material unit table.

FIG. 5 is a diagram for explaining a configuration of a connection availability table;

FIG. 6 is a diagram illustrating a configuration of a connection evaluation table.

FIG. 7 is a flowchart showing a processing procedure of a joining process of an unapplied steel material unit and an additional order executed by the data processing unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Production line 2 Order input part 3 Work result taking part 4 Work instruction part 5 Data processing part 6 Program memory 8 Order data storage memory 9 Various table storage memory 10 Product progress data storage memory 11 Material progress data storage memory 20 Unorganized order Table 30 Unfinished material unit table 40 Connection availability table 50 Connection evaluation table

 ──────────────────────────────────────────────────の Continued on the front page (72) Inventor Kentaro Ikeda 1 Kimitsu, Kimitsu City Nippon Steel Information and Communication System Co., Ltd. Kimitsu Branch Office (72) Inventor Mutsumi Yamada 1 Kimitsu, Kimitsu City Nippon Steel Corporation Kimitsu Steel Corporation In-house (72) Inventor Kazuki Kakemi 1 Kimitsu, Kimitsu-shi Nippon Steel Corporation Kimitsu Works (56) References JP-A-61-221958 (JP, A) JP-A-1-188256 (JP, A) JP-A-3-136751 (JP, A) JP-A-3-117542 (JP, A)

Claims (1)

(57) [Claims] 1. A production management system for the steel industry, in which a computer is used to organize a material unit when an additional order for a steel material is received, wherein an order assigned to a material unit in an untapped state is provided.
Storage means for storing information on potential surplus for each material unit
And an unexposed steel material unit detecting means for detecting a material unit in an unextruded state with reference to the storage means when the additional order is received; and Determines whether the above additional orders can be assigned to material units .
First applicability judging means for judging whether or not the production conditions are the same, and a material unit detected by the unexposed steel material unit detecting means.
Whether it is possible to assign the additional order to
Surplus part of material unit and size of steel material for additional order
Material unit for performing a second allocation determination means for determining based on of the allocation of the additional order to potential excess portion of the material units in accordance with a determination result by the first and second allocation determination means A production management system for the steel industry, comprising knitting means.