JP2002006905A - Production management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an effective management system that can obtain the production management information in real-time. SOLUTION: The system consists of a production information storage 8, a inventory information storage 20, a main material inventory information storage 3, and a sub-materials inventory information storage 6. The production information is put in the production information storage 8 in real-time, the input and output quantity of scrap to the inventory is put in the main material inventory information storage 3 in real-time, and the sub-materials inventory quantity is put in the sub-materials inventory information storage 6 in real-time. When the production information is put in the production information storage 8, this is acquired to the inventory information storage 20 in real-time, and the production is managed by referring the production information obtained by accessing the production information storage 8, the main material inventory information storage 3, and the sub materials inventory information storage 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a production management system, and more particularly, to the production management of a product manufactured through a plurality of production facilities, the production information (production history) of the product in the production facility in the previous process is recorded in the post-process. It is suitable for production management of a production system that greatly affects the quality and characteristics of products in production equipment.

[0002]

2. Description of the Related Art The types of products to which the present invention is applied are not limited. For example, the present invention is suitable for production management of products manufactured through a plurality of production facilities, such as steel products. Therefore, in order to facilitate understanding of the present invention, as an example, a method of manufacturing a shaped steel in a steel product is shown in FIG.
It will be described based on.

[0003] That is, an iron-containing main raw material (scrap) having a predetermined composition and auxiliary materials (desulfurizing agent, deoxidizing agent, etc.) are supplied to an electric furnace 21.
In a ladle refining furnace 22, a predetermined amount of molten metal (molten steel) is separated and refined, and the molten metal is continuously cast in a continuous casting facility 23, and the resulting semi-finished products such as a beam blank 24 and a bloom 25. Is heated to a predetermined temperature in a heating furnace 26, and then rolled to a predetermined shape in a rolling mill 27,
The shape is corrected by the roller straightening machine 28, and the shaped steel 29 can be obtained.

[0004] Broadly speaking, the shaped steel is made up of a steelmaking facility comprising an electric furnace 21, a ladle refining furnace 22, and a continuous casting facility (a facility for continuously casting molten metal to produce a solidified slab) 23, It is manufactured by rolling equipment including a furnace 26, a rolling mill 27, and a roller straightening machine 28. In the steelmaking equipment in the pre-process, a slab having an appropriate component and a predetermined size is manufactured from the molten metal, and in the rolling equipment in the post-process, the slab is rolled to form a shaped steel having a predetermined shape. The product is obtained. In the production of steel products, the role played by steelmaking equipment is extremely important. In the production management information of steelmaking equipment, in particular, component analysis values of molten metal in electric furnaces and slab cutting in continuous casting equipment Information (Slab cutting dimensions)
Is important.

[0005] This is because the components of the molten metal affect the castability during continuous casting, and factors (rolling force, rolling schedule, etc.) of the rolling operation in a rolling mill depend on the components of the slab obtained as a result of continuous casting. ) Is not properly adjusted, it is often impossible to roll well.

[0006] Also, the quality of the slab cutting dimension during continuous casting affects the product yield, and if the cutting length is not appropriate, the stock of the slab is unnecessarily increased. Therefore, the slab cutting operation will be described based on a schematic configuration diagram of a continuous casting facility, as shown in FIG.
A ladle 31 containing molten steel (molten metal) 30, followed by a tundish 32 which is an intermediate container lined with refractory material
The molten steel in the ladle 31 is stored in the ladle 31, and the molten steel is injected from the bottom of the tundish 32 into a casting mold (of a type which vibrates in the direction perpendicular to the paper surface in order to control the shape of the slab to be constant) 33. And a pair of subsequent pinch rolls 3
In 4, the slab 35 is drawn downward by a plurality of sets of spray devices 36 while pulling the slab 35 downward at a constant speed.
Is gradually solidified from the surface layer portion, and the solidified cast slab 35 is cut by a cutting device 37 installed in a portion where the entire cast slab 35 is completely solidified. The cutting length of the slab by the cutting device 37 corresponds to the above-described slab cutting dimension.

Next, a conventional steel production control system will be described with reference to FIG. In FIG. 4, a person in charge 41 inputs the amount of the iron-containing main raw material (scrap) of the charge to the terminal 42, and the production information of all the charges of the day input to the terminal 42 becomes the next day. Station 43 to production information storage device 45 of general-purpose machine 44
Had been transferred to. The components of each charge of the electric furnace are measured during melting in the electric furnace.
Of the analysis values delivered by the computer room staff 48 was input to the production information storage device 45 the next day. Also, the slab cutting information of the cutting device (37 in FIG. 3) of the continuous casting facility is:
The person in charge 51 of the computer room has input the cutting schedule 50 delivered by the night shift worker 49 on the previous day to the production information storage device 45 on the next day. A part of the information taken into the production information storage device 45 was also taken into the inventory information storage device 52. In addition, the person in charge of the material weighing station 53 input the amount of scrap (main raw material containing iron) into the main raw material inventory information storage device 54 the next day. Further, the amount of the various auxiliary materials supplied to the auxiliary material storage near the electric furnace (incoming amount) is determined by the number of floppy (registered trademark) disks 55 in which the auxiliary material supply amount is input by the person in charge of the material warehouse on the same day. At the end, the information was delivered to the computer room, and the information written on the floppy disk 55 was input to the auxiliary material stock information storage device 57 the next day by a person in charge of the computer room (not shown).

When it is desired to obtain information stored in the production information storage device 45, the stock information storage device 52, or the main raw material inventory information storage device 54, the person in charge 58 accesses each of these storage devices. I was able to get the information I needed. However, since the information stored in each of these storage devices is the information of the previous day and is not useful for the production management of the day, it is common practice to call the production site directly for inquiries about the production information. Had been done. In addition, the daily report 59 which took in the information of the previous day, the person in charge 60 of each site came to the computer room during the lunch break time.

[0009]

As described above, according to the conventional production management system, only the previous day's production management information can be extracted, and when the production management information is obtained, the product is not used until the final process. Normally, the process has been completed, and the production management information of the previous process cannot be effectively used for the production management of the subsequent process. Further, since the production management information of the process cannot be obtained in real time, the production management information cannot be used in a timely manner to improve the operation results of the process.

The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to provide an efficient production management system capable of obtaining production management information in real time. It is in.

[0011]

In order to achieve the above object, the present invention provides a production information processing means, a main raw material inventory information processing means, and a sub information processing means which input production information, main raw material inventory information and auxiliary material inventory information in real time. A production management system that can perform production while referring to information obtained by accessing the material inventory information processing means as necessary is adopted. Improve performance and control production under the best conditions.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS That is, the present invention comprises the following first to fourth inventions.

The gist of the production management system of the first invention is as follows.
A production information processing means, an inventory information processing means, a main raw material inventory information processing means, and a sub material inventory information processing means, and input production information to the production information processing means in real time;
The input and output of the main raw material is input to the main raw material inventory information processing means in real time, the input of the auxiliary material is input to the auxiliary material inventory information processing means in real time, and the production information input to the production information processing means is input. The present invention is characterized in that production is performed in real time by the stock information processing means, and production is performed with reference to information obtained by accessing the production information processing means, the main raw material stock information processing means, and the auxiliary material stock information processing means.

The gist of the second invention is that, in the first invention, the information taken in by the production information processing means, the stock information processing means, the main raw material stock information processing means and the auxiliary material stock information processing means at an arbitrary timing. The feature is that output is possible.

[0015] The gist of the third invention is that, in the first or second invention, the production information is related to steel making equipment, and the production information is based on the component analysis value of the electric furnace and the slab cutting of the continuous casting equipment. It is characterized by having rolling equipment as equipment following the steel making equipment, including information, and performing rolling while referring to production information of the steel making equipment at the time of rolling work.

The gist of the fourth invention is that, in the third invention, information automatically taken in from steel making equipment and its attached equipment is output, and production information is corrected based on the output information. Features.

According to the first invention, production management can be performed as follows. (Input of information) Production information is input to the production information processing means in real time, the incoming and outgoing quantities of main raw materials are input to the main raw material inventory information processing means in real time, and the incoming amounts of auxiliary materials are processed as auxiliary material inventory information. Input to the means in real time. (Output of information) Production is performed by selecting optimum operating conditions while referring to information obtained by accessing the production information processing means, main raw material inventory information processing means, and auxiliary material inventory information processing means as necessary. be able to.

According to the second invention, production management can be performed as follows.

Information taken in by the production information processing means, the stock information processing means, the main raw material stock information processing means and the auxiliary material stock information processing means is output at an arbitrary timing, and the operating conditions are appropriately corrected according to the information. As a result, it is possible to improve operational results such as quality, yield, productivity, and energy consumption.

According to the third invention, production management can be performed as follows.

During the rolling operation of the rolling equipment, which is the equipment subsequent to the steel making equipment, the component analysis value of the slab is referred to, and the rolling conditions are appropriately corrected in accordance with the component value to maintain a good product shape. be able to.

According to the fourth invention, production management can be performed as follows.

By correcting the production information based on the information automatically taken in from the steel making equipment and its auxiliary equipment, accurate production information can be stored, and highly accurate production management can be performed.

[0024]

Embodiments of the present invention will be described below. Figure 1
1 is a schematic configuration diagram when the production management system of the present invention is applied to steelmaking equipment. In FIG. 1, reference numeral 1 denotes a person in charge of a material weighing station. The person 1 inputs a scrap purchase amount 2 to a main raw material inventory information storage device 3 in real time. In addition, the material warehouse staff 4 inputs the storage amount 5 of various auxiliary materials to the auxiliary material stock information storage device 6 in real time. Then, when the material clerk 7 in the electric furnace operation room inputs the amount of scrap (iron ore) (the amount of stock) put into the electric furnace 21 in FIG. The quantity 9 is input in real time to the main raw material inventory information storage device 3 in the production information storage device 8, and the outgoing quantity 10 of the auxiliary material is input in real time to the auxiliary material inventory information storage device 6 in the production information storage device 8. .

Then, the scrap and the auxiliary material are melted at a predetermined temperature in an electric furnace (21 in FIG. 2). During the melting, a part of the molten metal (molten steel) is sampled, and the chemical composition of the molten steel is analyzed. This component analysis value is sent from an analyzer (not shown) to the workstation 11.
Is automatically transferred to the production information storage device 8 via In addition to the component analysis values of the molten steel, various information automatically taken from the steelmaking equipment and its auxiliary equipment (for example, the discharge amount of auxiliary materials, the electric furnace electrolysis time, the electric furnace melting temperature, the electric furnace furnace pressure, The molten steel weight, power consumption, slab cutting dimensions, slab cutting time, etc.) are automatically transferred from the workstation 11 to the production information storage device 8 periodically (every three minutes). Then, the information of each equipment automatically transferred is periodically (every 5 minutes) from the production information storage device 8 to the terminal device 12 in the electric furnace operation room.
Has been transferred to. The person in charge of the electric furnace operation room 13
By referring to the information display screen of the terminal 12, it is possible to grasp the real-time component analysis value of the charge and numerical values related to productivity (ton / hr), yield, power consumption unit, and the like. If each of the operation indices deviates from the target, the electric furnace can be produced under the optimal operation conditions by appropriately modifying the operation conditions of the charge or the subsequent charge.

Further, since information on each facility is also displayed directly from the workstation 11 on the screen of the terminal device 14 in the electric furnace operating room, the person 13 in charge of the electric furnace operating room is displayed on the screen of the terminal device 12. The displayed information is compared with the information displayed on the screen of the terminal 14, and if the display information of the terminal 12 is different from the display information of the terminal 14, for example, if the component analysis value is different, 13 corrects the component analysis value taken into the production information storage device 8 based on the value displayed on the terminal 14. This is because when data is transferred via a repeater, the data is often dropped or the data is modified. Therefore, when the component analysis value is missing in the display information of the terminal 12, the component analysis value displayed on the terminal 14 is input to the production information storage device 8 by the person in charge 13.

A predetermined amount of the molten metal after melting is separated in a ladle refining furnace (No. 22 in FIG. 2), and the molten metal is continuously cast in a continuous casting facility (No. 23 in FIG. 2). The slab cutting information (the slab charge No., the slab cutting dimensions, etc.) of the cutting device (No. 37 in FIG. 3) during the continuous casting is also sent from the workstation 11 to the production information storage device 8.
The slab cutting information automatically transferred to the production information storage device 8 is transferred to the terminal device 15 in the torch chamber. The slab cutting information is stored in the workstation 11
Is displayed directly on the screen of the terminal 16 in the torch room, and the person in charge 17 determines that the display information of the terminal 15 is different from the display information of the terminal 16 for the above-described reason.
The slab cutting information taken into the production information storage device 8 is corrected based on the value displayed in 6.

Further, the person in charge of the continuous casting machine 18 refers to the information display screen of the terminal device 19 to obtain the real-time component analysis value, productivity (ton / hr), yield, energy consumption unit and the like of the slab. If these operation indices are out of the target, it is necessary to correct the operating conditions at the time of the casting or at the time of the subsequent casting as needed to perform continuous casting under the optimum operating conditions. Can be.

The information written in the production information storage device 8 is also taken in the semi-finished product inventory information storage device 20 in real time.

Thus, the continuous casting equipment (No. 2 in FIG. 2)
By the continuous casting according to 3), semi-finished products such as the beam blank 24 and the bloom 25 are obtained. The temperature of these semi-finished products is above about 500 ° C.
In some cases, depending on the application status of the ordered product and other reasons, the material may be stored in the storage 23a of the continuous casting facility shown in FIG. . The heating furnace 26 is heated to a predetermined temperature (approximately 900 to 1000 ° C.) regardless of whether the material directly sent from the continuous casting facility is heated at a high temperature or the cold material is heated. In this regard, in the case of a high-temperature direct-feed material, there is an advantage that energy required for heating can be reduced. Next, the beam blank 24 and the bloom 25 are rolled into a predetermined shape by the rolling mill 27. At the time of this rolling operation, the above-described production management information of the steelmaking equipment is considered. That is, the rolling mill 27 basically operates according to a predetermined control program, but the operator (not shown) of the rolling mill 27 analyzes the components of the beam blank 24 and the bloom 25 taken into the production information storage device 8. With reference to the values, the rolling conditions such as the rolling force and the rolling schedule (balance of the rolling amount between the stands of the rolling mill) are appropriately corrected in accordance with the component values, so that a good shape can be rolled. Thereafter, the shape is corrected by a roller straightening machine (No. 28 in FIG. 2), and a high-quality shaped steel (No. 29 in FIG. 2) can be obtained.

As described above, according to the present invention, production management information can be obtained in real time, but it is also possible to output the production management information as a daily report R at an arbitrary timing. By outputting the daily report, the operating conditions such as quality, yield, productivity, and energy consumption can be improved by appropriately modifying the operating conditions according to the information.

[0032]

Since the present invention is configured as described above, the following effects can be obtained. (1) According to the first aspect of the present invention, since the production management information can be obtained in real time, it is possible to carry out the production by selecting the optimal operating conditions. (2) According to the second aspect of the present invention, the information taken into the production information processing means, the inventory information processing means, the main raw material inventory information processing means and the auxiliary material inventory information processing means is output at an arbitrary timing. The operating conditions such as quality, yield, productivity, and energy consumption can be improved by appropriately modifying the operating conditions according to the information. (3) According to the third aspect of the present invention, the component analysis value of the slab is referred to at the time of the rolling operation of the rolling equipment which is the equipment subsequent to the steel making equipment, and the rolling conditions are appropriately corrected in accordance with the component value. By doing so, it is possible to maintain a good product shape. (4) According to the invention described in claim 4, by correcting the production information based on the information automatically taken from the steel making equipment and its attached equipment, accurate production information is stored,
Highly accurate production control can be performed.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram when a production management system of the present invention is applied to steelmaking equipment.

FIG. 2 is a schematic configuration diagram of a steel product manufacturing apparatus.

FIG. 3 is a schematic configuration diagram of a continuous casting facility.

FIG. 4 is a schematic configuration diagram of a conventional steelmaking equipment production management system.

[Explanation of symbols]

 3: Main raw material inventory information storage device 6: Secondary material inventory information storage device 8: Production information storage device 20: Inventory information storage device

Claims (4)

[Claims] 1. A production information processing means, a stock information processing means, a main raw material inventory information processing means, and a sub material inventory information processing means, wherein production information is inputted to the production information processing means in real time, Input and output of raw materials to the main raw material inventory information processing means in real time, input quantity of sub-materials is input to sub-material inventory information processing means in real time, and the production information input to the production information processing means is inventory information. A production management system characterized in that production is performed in real time by a processing means, and production is performed with reference to information obtained by accessing a production information processing means, a main raw material inventory information processing means, and an auxiliary material inventory information processing means. 2. The information fetched by the production information processing means, the stock information processing means, the main raw material stock information processing means and the auxiliary material stock information processing means can be output at an arbitrary timing. The production management system described. 3. The production information relates to a steel making facility, and the production information includes a component analysis value of an electric furnace and slab cutting information of a continuous casting facility, and has a rolling facility as a facility following the steel making facility. 3. The production management system according to claim 1, wherein the rolling is performed with reference to the production information of the steel making equipment during the rolling operation. 4. The production management system according to claim 3, wherein information automatically taken in from the steel making facility and its attached facilities is output, and the production information is corrected based on the outputted information.