JPH10180597A - Product management system in manufacturing processes - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the burden of the operator by absorbing automatically the eventually generated variation in the production in the manufacturing processes. SOLUTION: If the ordered items of products are as per the same specifications, a management No. giving part 41 gives one product integration No. for all products, and the ordered items of products are managed totally on the basis of the No. The No. for each order is used as conventional, and management of the delivery term, etc., for each occurrence of order itself is performed separately. Judgement whether the ordered items at this time include the same specifications as before, is performed by an order-product relating part 42 on the basis of the chief items after the process of screening. The management of the products is made by a computer on the basis of the product integration No., and thereby the handling that the ordered items of products are distributed to other ordered products is made automatically, and thus the burden of the operator is reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a product management system for a manufacturing process in which an order for a complicated steel manufacturing process in an ironworks and an actual product are efficiently handled by using a computer.

[0002]

2. Description of the Related Art Among steel products manufactured in an ironworks, for example, a product called a sheet product is a product having repeatability in which products of the same quality and the same material are relatively often ordered repeatedly. In order to deliver products on time even for such thin sheet product orders, the progress of each process in many manufacturing processes is managed in accordance with each order. Was. For this reason, conventionally, when there is an order in each season (early, middle, late) of a certain month, a management number is assigned to each order, and a management computer is assigned to each management number based on this management number. It was used to manage up to shipping. Therefore, on the computer of the system, each order is independent.For example, when it is necessary to require a hot coil in the steel making and hot rolling processes in the sheet metal processing, the computer is required to execute each order. Such a request was made. Also, even after entering the thin plate process, management of the progress of the process for each order has been performed.

[0003]

However, if the progress of the process and the like are managed for each order, for example, when the quantity of the actual product manufactured during the processing in the thin plate process fluctuates, However, the following problem occurs. For example,
If there is more than a predetermined amount of product for a certain process, and if it is managed on an order basis as in the past, it is necessary to transfer the surplus product to the product of another order after that In this case, the operator must give an instruction to that effect to the managed computer. If this instruction is not given, the surplus product will be stocked as surplus material. Conversely, if the actual product actually manufactured for that order becomes a rejected material during the manufacturing process and cannot be shipped, when using an existing product manufactured later, Must be instructed to the computer, increasing the burden on the operator,
In addition, when an existing stock is used, processing by an operator is required.

[0004] The present invention has been made based on the above circumstances, and even if the production in the manufacturing process fluctuates,
It is an object of the present invention to provide a product management system for a manufacturing process that can automatically absorb them and reduce the burden on the operator.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a manufacturing process having a process of producing an intermediate product, and a method for integrally managing a plurality of orders for products having the same specifications. A management number assigning means for assigning the same management number to the plurality of orders, and the order and the intermediate product and the final product corresponding to the order within the same management number, and the intermediate product or the final product in the manufacturing process. When a change occurs in the product, the order / product association means for re-associating the order with the intermediate product and the final product corresponding to the order, giving priority to the order with the highest priority, the management number assigning means and the Storage means for storing the processing result of the order / product association means.

According to the present invention, the same management number is assigned to a plurality of orders for a product having the same specification as described above, and product management in the manufacturing process is performed for the entire order given the management number. If a change occurs in the manufacturing situation, the order / product association means re-associates the order within the same control number as the order in which the change occurred, with the intermediate product and the final product corresponding to the order. This eliminates the need for the operator to instruct the computer to change the management content, improving work efficiency and
By managing a plurality of orders integrally by the management number, it is possible to reduce the generation of surplus material as compared with the case of managing each single order.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. First, with reference to FIG. 1, a procedure for manufacturing a thin plate product manufactured in an ironworks will be briefly described for each process. Here, the thin plate product refers to a thin plate product used for a container for soft drinks, a body of an automobile, and the like, for example, a stainless steel plate, a surface-treated steel plate, an electromagnetic steel plate, and the like.

[0008] Hot metal supplied from the blast furnace is converted into a converter (refining).
In step 10, the steel is made into steel having the quality and composition suitable for the application, and in continuous casting (solidification) step 11, it is hardened into a slab and cut. Converter process 10 and continuous casting process 1
Together with No. 1, it is generally called a steel making process. The steelmaking process
This is a common process not only for sheet products but also for steel products other than sheet products such as steel pipes and steel sheet piles. In order to manufacture a thin sheet product, the slab supplied from the continuous casting step 11 is roughly rolled (rough rolling step 12), and further subjected to a hot finish rolling mill (hot finish rolling step 13), so-called hot coil. To manufacture hot-rolled steel sheets called The hot coil thus obtained is sent to a thin plate process. The thin plate process is
For example, in addition to the pickling step 14, the cold rolling step 15, the CAPL step (continuous annealing / pressure adjusting step) 16, the refining step 17, and the like, dozens of steps are included depending on the product.

In the present embodiment, the steps from the steel making process to the generation of the hot coil are referred to as a steel making / hot rolling process.
This corresponds to the upper step of the present invention. Further, the thin plate process corresponds to a lower process of the present invention. FIG. 2 is a block diagram illustrating an outline of a production management system for a thin plate product according to the present embodiment.
First, when an order for a sheet product is received from a customer in an ordering department at a head office or the like, the contents of the order are input to the system. The input content is stored in the storage unit 43.
Hereinafter, in the screening unit 21, the weekly production planning unit 22, the management number assigning unit 41, and the like, the storage unit 4
3 is read and processed, and the result is stored in the storage unit 43. The content of the order is, for example, “Deliver a 50-ton sheet product in a month and a week”. At the steel mill, after performing a predetermined order receiving process on this order, the screening unit 21 performs a screening process. In this screening process, quality design, design of a manufacturing method, and the like for an ordered product are performed. In other words, what kind of process is used to manufacture the product is determined, and the manufacturing specification is determined for each process that passes. The screening unit 21 also assigns various key items and the like necessary for management of the product in the steelworks.

The weekly production planning unit 22 determines the quantity of products to be manufactured in the week based on the result of the screening process stored in the storage unit 43, taking into account the load balance in all processes. For example, in the case of a steel mill that receives about 2,000 orders per week, those orders that can be processed at the factory in that week and those that cannot be processed are distinguished, and those that cannot be processed are processed in the next week. Processing such as carry over is performed. The processing result is stored in the storage unit 43.

[0011] The management number assigning section 41, based on the main items after the screening process of the screening section stored in the storage section 43, the order (repeat order) of the same product specification as the order previously made. , The same management number as the order made before (hereinafter, also referred to as a product aggregation number in the present embodiment) is given. This processing result is stored in the storage unit 43. The main items include the in-house specifications of the product, the order size, and the passing process.

The actual product design unit 23 performs actual product design of the hot coil with the optimum unit weight. In the present embodiment, the concepts of “actual product design” and “design actual product” are introduced. First, the concept of actual product design and design actual product will be described. Conventionally, when manufacturing a product from molten steel in a molten state, it has been controlled by custom weight. On the other hand, in the present embodiment, the concept of a hot coil design product is introduced, and order management is performed using the design product. The concept of the actual design at the hot coil stage is introduced for the following reasons. In the case of a thin sheet product, it is the hot coil that determines its basic properties. In the thin plate process, the hot coil is passed through each process in a substantially unchanged shape. One hot coil may become two in the course of the thin plate process, but this does not significantly affect the manufacturing scheduling. That is, if the weight and the number of the hot coils are controlled, no significant error occurs in the thin plate process. Further, the number and the weight of the hot coil and the slab correspond one to one. Therefore, by controlling the hot coil, it is possible to control the material in the steel making / hot rolling process. Further, it takes about 20 days for a long process from the steelmaking stage to the final process of the thin plate. For this reason, by performing the actual product design at the stage of the intermediate hot coil and performing the production design of the upper process and the lower process based on the actual product design, it is possible to perform the optimal production scheduling of the thin product.

In the present embodiment, the manufacturing schedule of the steel making / hot rolling process (upper process) and the thin plate process (lower process) is performed for each hot coil design product, so that the lead time is significantly higher than the conventional scheduling. (Long-term) scheduling can be performed. Also,
Since the scheduling is performed on an actual product basis, a lot formation at the same level as a work instruction according to the actual operation can be performed on a process basis, and accurate scheduling with extremely high execution accuracy can be performed as compared with the related art.

The conventional management is “total management”.
"Total framework control" refers to the management of products of the same type, for example, products with common manufacturing methods and materials, based on the total weight of products to be manufactured within a certain period of time such as day, week, month, and period. Is the concept. At steel mills, products that can be actually manufactured even when making detailed daily plans for the supply and production of raw materials, changing orders on the customer side, and inputting the same amount of raw materials (actual actual products) Frequently fluctuates due to the processing (eg, yield drop) in the middle step.

The overall management of such fluctuations is as follows:
There is no need to make daily detailed production plans,
Even if unplanned work became necessary, the inventory could serve as a buffer to some extent. However,
For example, the detailed schedule of when a product corresponding to an order from a certain customer is to be delivered was short in schedule, and could only be known at most three days in advance. Further, even if the planned contents do not match the quantity of products manufactured according to the plan, it has been difficult to make a detailed evaluation of where the cause was. In addition, in the case of total management, surplus materials are likely to be generated,
Moreover, it was difficult to identify the cause.

On the other hand, in the present embodiment, order management is performed using the concept of a design actual product. For this,
First, the actual design of the hot coil is performed. The actual product design refers to designing at least the size, unit weight, and number of hot coils obtained as a result of the steel making / hot rolling process based on the result of the screening process stored in the storage unit 43. The product obtained as a result of actual product design is called a design actual product. However, even if it is referred to as "the actual item", the actual item at this stage is a fictitious item that has not been manufactured yet. (In particular,
For example, if the order from the customer is a thin sheet product of 100t, the product weight after the cold rolling process is required 110t, and the hot coil after the hot finish rolling process is 120t.
Required. Thus, the weight of the product increases as one goes to the upstream process. Then, in order to manufacture the hot coil of 120 t, for example, six hot coils of 10 t and 2
An actual product is designed for each hot coil such that three 0t hot coils are required. That is, the actual design of the hot coil is based on the total weight of the order, the unit weight of the product, the capacity of the equipment in each process (the maximum processing weight and the minimum processing weight may be determined by each equipment, etc.), and the like. Determine the unit weight and number of

The order / product associating unit 42 first associates each order with the designed actual product using the data stored in the storage unit 43 when the designed actual product is designed. Further, for each manufacturing process, the order is linked between the actual product (intermediate product) manufactured by the manufacturing process and the order, and further, the final product after the final process is linked to the order. In addition, when there is a change in the intermediate product or the final product based on the manufacturing status of each manufacturing process, the linking is performed again. The processing result is stored in the storage unit 43.

The weekly / daily scheduling unit 24 shown in FIG.
Then, scheduling of all order details of the thin plate process and the steel making / hot rolling process is performed daily. First, in the weekly / daily up-scheduling unit 25a, all the thin-plate processes (all order details, all processes) are scheduled based on the hot coil design products designed by the product design unit 23. This scheduling is performed in such a manner that the delivery process is taken into consideration so as to sequentially go upstream from the most downstream process. As a result of the scheduling, the demand for when the hot rolling is to be performed is completed for each actual design product. This request
It is passed to the weekly / daily scheduling section 26 of the steelmaking / hot rolling process, which is the upper process, in the form of “HC requirement”. Steel making
The weekly / daily scheduling unit 26 of the hot rolling process performs weekly / daily scheduling of the steel making / hot rolling process based on this request.

In the steel making / hot rolling process, since work is also performed on products other than thin sheets, it is not always possible to supply a hot coil on a schedule as required. For this reason, the weekly / daily scheduling unit 26 of the steel making / hot rolling process attempts to perform scheduling based on the request. And return to the sheet processing. This “HC supply schedule” is also returned in hot coil design actual product units. Then, the weekly / daily down scheduler 25b of the thin plate process is
Based on the "scheduled HC supply", the scheduling of the thin plate process is performed again. This scheduling is performed in such a manner as to sequentially descend from the upstream process to the downstream process. Here, for the first time, a weekly / daily schedule is completed in which the intentions of the thin sheet process and the intentions of the steel making and hot rolling processes are connected. That is, conventionally, the steel making / hot rolling process and the thin plate process were separated from each other in terms of schedule, but in the present embodiment, the integrated scheduling of the steel making / hot rolling process and the thin plate process can be performed. it can. The result of the production scheduling is displayed as a process management table on a large color graphic display that allows several operators to be commonly recognized in a "visible" manner. The contents of the process management table are time-series representations of which materials are processed in what process and how. Then, the result is supplied to the production control unit 28 which controls the actual operation in the factory.

The production control unit 28 gives a daily instruction to each equipment 29 on the basis of the passed production scheduling result. However, once the schedule is created, the operation may fluctuate on the way. The causes of this change include a case where an order is changed from a customer and a case where surplus material of the actual product is generated. In order to absorb such fluctuations, the actual product design is re-executed based on the change in the order and the allocation of the surplus material that has occurred. The result of the redoing the actual product design is passed to the weekly / daily scheduling unit 24, and the rescheduling operation is performed daily for the thin plate process and the steelmaking hot rolling process. In the same system, it repeats it every day and always schedules with the latest information. If the plan is changed in the daily / execution scheduling units 27a and 27b, the result is reported daily to the production control unit 28.
And the production control unit 28 reflects the passed result of the manufacturing scheduling in the instruction to each facility 29. Such a scheduling operation is automatically performed by a computer. Then, the created schedule can be viewed by a human to confirm whether or not it is really acceptable, and if necessary, can be interactively modified as needed on a process management table displayed on a graphic display.
As a result of the operation in each facility 29, a product is produced and results are obtained. The result is passed again to the actual product design unit 23,
The weekly / daily scheduling unit 24 reflects this in the next day's manufacturing scheduling.

As described above, by performing scheduling on a hot coil design basis, product delivery time can be managed on a design basis, and conventionally, the steel making / hot rolling process and the thin plate process are separated. In contrast, in this embodiment, steelmaking and
The scheduling can be performed continuously from the beginning to the end in the hot rolling process and the thin plate process. In addition, since data on the actual product obtained based on the production schedule can be compared with data on the design actual product, the amount of surplus material is generated by comparing the quantity of the actual product with the actual product. Can be evaluated and analyzed with high accuracy, and can be used to improve necessary points.
The accuracy of evaluation and analysis is greatly improved, compared to the case where conventionally there were only actual products and there was no design actual product, so that sufficient evaluation and analysis could not be performed.

As an example, when a hot coil of 10 tons is supposed to be made at the stage of designing the actual product, but the final thin product is manufactured to be 11 tons, the cause analysis is to analyze the cause. This makes it possible to compare plans with actual results. This becomes basic data for elucidating the cause of the surplus material and improving necessary points. Since the hot coil and the slab correspond almost one-to-one, the surplus material of the hot coil and the surplus material of the slab also correspond almost one-to-one, and no surplus material is generated in the process from the slab to the hot coil. . It is considered that the cause of the surplus material is caused by fluctuations in actual results, equipment specifications, the way of receiving orders, and the like.
If it is found that there is surplus due to the way of receiving an order, it is possible to propose to the order receiving department an improvement in the way of receiving an order.

Next, the main part of this embodiment will be described. FIG. 3 is a diagram showing an outline of production management of a thin plate product in the present embodiment in comparison with a conventional example, in which the upper part shows the case of the related art and the lower part shows the case of the present embodiment. By the way, a thin plate product has a characteristic that it has repeatability of order. "Repeatable" means that orders of exactly the same product specifications are periodically repeated by a predetermined amount. For example,
The same sheet product used for the roof of a particular car model of an automobile company is ordered in relatively short periods of time, either weekly or seasonally. This is due to avoiding excess distribution inventory.

In FIG. 3, from the consumer, in late April,
Suppose that there are 100t, 50t, and 200t orders of the same product specifications every season, such as early May and mid-May. Conventionally, when there is an order in each season, order numbers U-1, U-2, U-3 are attached to each order,
On the basis of this order number, the management computer is made to perform management up to shipment after that for each order number. Therefore, on the computer of the system, each order is independent, and the computer requests the hot coil for the steel making and hot rolling process, transfer of surplus material,
Material correction was performed. For example, 100t in late April
If only 90t can be manufactured for some reason despite the order, the seasonal order is separate on the system, so if the product is not enough, just inform the operator that the product is not enough. is there. In order to deal with this, for example, if 10 tons of products manufactured in early May are to be allocated to orders in early April, the operator will instruct the system computer to that effect. Was needed.

On the other hand, in the present embodiment, if the ordered products have exactly the same specifications, after performing the screening process, the management number assigning unit 41 collects one product for the entire product. Numbers are assigned and the relationship between the two is stored in the storage unit 43, and a plurality of ordered products are managed integrally based on the product aggregation number. However, the number for each order is used as before, and the management of the delivery date and the like for each order is also separately performed.

In the example of FIG. 3, one product aggregation number S-1 is assigned to a total of 350 tons of product orders in late April, early May and mid-May. To determine if an order has the same product specifications as a previously placed order (repeat order)
The management number assigning unit 41 performs the process based on the main items after performing the screening process. Also, for example, if only 90t can be manufactured for an order of 100t in late April, the order / product association unit 42 obtains the information from the manufacturing process and automatically enters the order in early May. A process of allocating 10t of the manufactured product (order U-2) to the order in late April is performed. Therefore, there is no need for the operator to perform any special operation on the system. Here, it is assumed that the priority of each order is in the order of the input timing.

When a repeat order is made thereafter, a unique order number is added to the order, and the management number assigning unit 41 assigns the same product aggregation number S-1 to the product aggregation number. And the number of orders t under the product aggregation number increases. As described above, collectively managing repeat orders collectively based on the product aggregation number and managing them continuously can also be considered as an apparent increase in the number of ordered lots. In the above description, the case of dividing into early, middle, and late is described. However, this may be divided into the first week, the second week, the third week, and the fourth week of each month.

FIGS. 4 and 5 show a specific example of order and product management performed under the above product aggregation number. FIG. 4 shows a relationship between an order at a certain point in time and an actual product in process of manufacture (an intermediate product including a designed actual product) which is actually flowing on a thin plate process line, for a product belonging to one and the same product aggregation number. I have. In FIG. 4, each order is arranged in the order of higher priority, in this embodiment, earlier in the delivery date (upward, the earlier the delivery date). They are arranged in order from the closest one (the upper one is closer to the final process). The straight line connecting the right-hand order and the left-hand item indicates that they are linked by the order / product association unit 42. For example, the order 1 of the product 50t is linked to the actual products ZG1 and ZG2 in the process of manufacture of the 25t, and when these end products are satisfactorily finished, they are shipped as the products of the order 1. Order 2 is for ZG3 and ZG3
The order 3 is linked to the current products ZG5 and ZG6 that are being manufactured.

The linking in FIG. 4 shows the correspondence at the present time, and may change depending on the situation thereafter.
For example, in the state of FIG. 4, it is assumed that the actual ZG2 on the left, which is being manufactured, becomes a rejected material and cannot be shipped as a product. At that time, when the order / product association unit 42 receives the information to that effect, the order / product association unit 42 automatically releases the link between the order 1 and the ZG2, and as shown in FIG. The approaching actual product ZG3 is linked to order 1. At the same time, a new tying is performed by shifting the ties between the orders 2 and 3 and the actual products in the process of being manufactured one by one. As a result, there is a shortage of 25 tons of the actual product to be associated with the order 3, and the order / product association unit 42 sends information to that effect to the actual product design unit 23. Accordingly, the actual product design unit 23 requests the supply of a 25-t hot coil in the form of “material correction” to the hot rolling process. In this way, even if the operator does not perform any special operation, the order / product association unit 42 automatically changes the link between each order and the actual product being manufactured according to the priority order, and If necessary, a request for a hot coil having a required weight for the hot rolling process is automatically made, so that work efficiency is improved.

As another example, for example, if the order of a product is 50
At t, it is assumed that the unit of the hot coil to be flown in the thin plate process is 15 t each. In that case, in order to cover the order of 50 tons, four hot coils, a total of 60 tons, are required. In the conventional case where the management was performed on an order basis, 10 t of the above was left behind. On the other hand, in the case of the present embodiment, the 10t is automatically transferred to the next order managed under the same product aggregation number by the order / product associating unit 42. Surplus material generated when viewed in the entire process line is reduced. For this reason, in the present embodiment, not only is it unnecessary to process the generated surplus material, but also the cost is reduced.

Next, referring to FIG. 6 and FIG. 7, the actual data management in the storage unit of the system according to the present embodiment is associated with the designed actual product and the actual actual product on the actual thin plate process line. I will explain it. Here, FIG. 6 is a diagram schematically illustrating a file structure of order data belonging to a certain product aggregation number in the storage unit 43 of the system. FIG.
FIG. 7 is a diagram showing the state of work in progress within the same product aggregation number as in FIG. In addition, the rightmost side of FIG. 7 is a state in which a product is obtained.

In FIG. 6, the column indicated by reference numeral 30 includes:
A product aggregation number 2-2-50010 of the product and main items related to the product having the product aggregation number are described. Specifically, it describes that this product is a large cold-rolled outer panel for a vehicle type MII of a certain car maker T, the size of the product, and the like. Order data 31 shown in FIG.
Column, three orders are currently recorded, and these are managed under the same product aggregation number 2-2-50010. Each order is specified by the order numbers 01-1, 08-1, 16-1 described in the column of "order number", and detailed data on each order is described in the column of each order.

For example, for order number 01-1,
The “order quantity” is 100 t, the “input month” indicating the time when the order is input is the fourth week of January, the “manufacturing specification number” is 20-1, and the hot coil for the hot rolling process is The “hot-rolling billing number” indicating the billing number is 22-0010, the “order of order picking” indicating the priority of delivery date is No. 1, and the “order picking amount” indicating the weight of the finished product already completed. Is 60 t, the “unfinished quantity” indicating the unfinished production residue is 40 t, and the “completion category” indicating whether or not the production of all weights has been completed is incomplete.

As to the order collection order of each order, the order number 01-1 is the first, the order number 08-1 is the second, the order number 16-1 is the third, and the order is 01-1, 08-1. , 16-
It can be seen that the priority is higher in the order of 1. In addition, the order collection quantities of the order numbers 08-1 and 16-1 are both 0t, which indicates that no order is manufactured. Therefore, when viewed under the product aggregation number 2-2-50010, the total order quantity is 260t, the total order collection quantity is 60t, and the total order balance is 200t.

In the "Product" column on the far right of FIG.
There is "Packing 60t". This corresponds to the fact that the "order collection amount" of the order number 01-1 is 60t. To the right is the unfinished quantity of each order. On the left side of the column of the order data 31 shown in FIG. 6, there are three columns 32, 33, and 34 corresponding to the three orders.
The upper row 32a, 33a, 34a of each column indicates "hot rolling billing / manufacturing lot data".
Information on the hot coil requested for the hot rolling process is recorded. The hot-rolled claim number 22-0010-1 is described in the hot-rolled claim / manufacturing lot data 32a corresponding to the order number 01-1. The hot-rolling bill / production lot data 32
The correspondence between the actual product a and the hot coil requested in the hot rolling process can be understood. Further, the “billed amount” is 103 t, which is 3 t larger than the ordered amount of 100 t, but this is in consideration of the production yield. “Actual hot-rolling amount” indicates the weight of the actually manufactured hot coil, which is 103 tons, so that all the hot-coils of the amount requested for the hot-rolling process based on this order have already been manufactured. It can be seen that the sheet has been passed to the thin plate process. “Completion category” is described as “completed”, indicating that fact. The same contents are described in the hot rolling billing / manufacturing lot data 33a and 34a of other orders.

The lower columns 32b, 33b, and 34b of the three columns show "design / actual actual product data", in which hot coil design actual products that have not yet reached the final product are shown.
In addition, data on actual products that are flowing through the thin plate process are recorded. Among them, the design / actual actual product data 32b corresponding to the order number 01-1 includes the actual product number MG-1.
6 and MG-17 indicate that two actual products exist. The actual product means that the necessary hot-rolling of the coil for this order has already been completed and the thin-sheet process has started. Besides, the unit weight of these hot coils is 21t and 22t, respectively, for a total of 43t,
These are currently working on the CAPL process and CAP
It is recorded that the scheduled passing date of L is January 25. MG-16 and MG in the “CAPL” step of FIG.
-17 corresponds to the actual product in the design / actual actual data 32b.

The design / actual actual product data 33b corresponding to the order number 08-1 includes actual product numbers HG-89 and HG-9.
0, HG-91 and HG-92 indicate that there are actual hot coils of four hot coils. other,
The unit weight of these hot coils is 19t and 18 respectively.
t, 20t, 19t, a total of 76, which are now N
The PL (pickling) process is underway, and it is recorded that the scheduled NPL passing date is February 1st. HG-89, HG-90, HG-9 in the "pickling" step of FIG.
1, HG-92 corresponds to the actual hot coil actual product in the design / actual actual product data 33b.

The design / actual actual product data 34b corresponding to the order number 16-1 includes actual product numbers SG-36 and SG-3.
7, 5 represented by SG-38, SG-39, SG-40
It is shown that there is an actual hot coil design book. The design actual product means that these hot coils exist only as products whose production is designed in the office process, and do not actually exist. In addition, the unit weight of these hot coils is 20t, 20t, 2t, respectively.
0t, 20t, 14t, and a total of 94. These are currently CC (planned), and it is recorded that the scheduled rolling date of hot rolling is February 10. SG-36, SG-37, SG-38, SG-3 in the "planned" process of FIG.
9, SG-40 corresponds to the hot coil design actual product in the actual / design actual product data 34b.

The actual product number of each hot coil in each of the design / actual actual product data is, for example, SG
From HG to HG, from HG to MG, and so on, sequentially changing to codes corresponding to the respective steps. In the case of FIG. 7, there is no actual product in process in each of the steps of “steel making”, “hot rolling”, “cold rolling”, and “refining”. As described above, under the circumstances shown in FIGS. 6 and 7, the order / product association unit 42 performs integrated management of orders in units of product aggregation numbers. The link between the flowing time system and the delivery date when the order must be delivered is automatically performed in order from the earliest one. As a result, for example, if the actual MG-17 in the CAPL process corresponding to the order number 01-1 becomes unusable for some reason, the system proceeds to the pickling process corresponding to the order number 08-1.
Appropriate one of the actual books of the book is allocated to the order number 01-1. Similarly, as the actual product of the order number 08-1, the design actual product of the hot coil of the order number 16-1 at the stage of the previous design actual product is applied. As a result, the efficiency of the material is improved as a whole, and even if there is an excess or deficiency in each order, the material management as a whole becomes more efficient and waste is minimized.

According to the above-described embodiment, the order of products having the same specifications is managed for each order, and is managed by the product aggregation number. The order within the same product aggregation number (management number) as the order in which the change occurred and the intermediate product (including the actual design product) corresponding to the order and the final product are linked again according to the priority order, and the change is caused. And automatically managing a plurality of orders using a product aggregation number, it is possible to reduce the generation of surplus material.

It should be noted that the present invention is not limited to the above embodiment, and various changes can be made within the scope of the invention. For example, in the above-described embodiment, the case where the designed actual product is used has been described, but the designed actual product may not be used. Further, in the above embodiment, the manufacturing process of the steel sheet process has been described, but the present invention is not limited to this steel product, and can be applied to various manufacturing processes.

[0042]

As described above, according to the present invention,
The same control number is assigned to multiple orders for products with the same specifications, the order is related to the intermediate product and the final product corresponding to the order within the same control number, and when the manufacturing situation changes, Since the order of the higher priority is given priority and the order and the intermediate product and the final product corresponding to the order are redone, the operation of instructing the computer to change the management contents by the operator is unnecessary, and the work efficiency is improved. The product management system of the manufacturing process, which can reduce the generation of surplus material compared to the case of managing each single order by integrally managing a plurality of orders by the management number Can be provided.

[Brief description of the drawings]

FIG. 1 is a diagram for explaining a manufacturing procedure of a sheet product manufactured in an ironworks step by step.

FIG. 2 is a diagram showing an outline of an automatic scheduling system for sheet products according to the present embodiment.

FIG. 3 is a diagram showing an outline of production management of a thin plate product in comparison with a conventional case, wherein an upper stage shows a case of a conventional case and a lower stage shows a case of the present embodiment.

FIG. 4 is a diagram showing a specific example of order and product management performed under the same product aggregation number.

FIG. 5 is a diagram showing a specific example of order and product management performed under the same product aggregation number.

FIG. 6 is a diagram schematically illustrating a file structure of order data belonging to the same product aggregation number.

FIG. 7 is a diagram showing the in-process status of orders belonging to the same product aggregation number for each process, wherein the upper stage shows the manufacturing process and the lower stage shows the in-process status.

[Explanation of symbols]

10 Converter (refining) process 11 Continuous casting (solidification) process 12 Rough rolling process 13 Hot finishing rolling process 14 Pickling process 15 Cold rolling process 16 CAPL process 17 Refining process 21 Screening unit 22 Weekly production planning unit 23 Current product design Section 24 Weekly / Daily Scheduling Section 25a Weekly / Daily Up Scheduling Section (Sheet Sheet Process) 25b Weekly / Daily Down Scheduling Section (Sheet Sheet Process) 26 Weekly / Daily Scheduling Section (Steel Making / Hot Rolling Process) 27 Day / Execution scheduling unit 28 Production control unit 29 Each facility 30 Product aggregation number and related items description column 31 Order data 32a, 33a, 34a Hot rolling billing / manufacturing lot data 32b, 33b, 34b Design / actual actual data 41 Management number assigning unit 42 Order / product association section 43 Storage section

Continuation of front page (72) Inventor Kikuo Akamatsu 2-6-3 Otemachi, Chiyoda-ku, Tokyo New Nippon Steel Corporation

Claims (5)

[Claims] 1. A manufacturing process having a process of generating an intermediate product, and a management number assigning means for assigning the same management number to the plurality of orders in order to integrally manage a plurality of orders for products of the same specification. And relating the order and the intermediate product and the final product corresponding to the order within the same control number, and when there is a change in the intermediate product or the final product in the manufacturing process, the higher priority order is given priority. Order / product association means for re-associating an order and an intermediate product and a final product corresponding to the order; storage means for storing processing results by the management number assigning means and the order / product association means; A product management system for a manufacturing process, comprising: 2. The manufacturing method according to claim 1, wherein said manufacturing step includes an upper step of producing an intermediate product based on raw materials and a lower step of further processing said intermediate product. Product management system for the process. 3. An actual product design means for designing at least a size, a unit weight and a quantity of one of the intermediate products based on the order and obtaining a designed actual product of the intermediate product, 3. The product management system according to claim 2, wherein the product includes the actual product. 4. The product management system according to claim 2, wherein the product is a steel sheet product, and the intermediate product is a hot coil. 5. The method according to claim 1, wherein the priority is determined based on a delivery date of the order.
A product management system for the manufacturing process according to 3 or 4.