JP2014128817A - Apparatus and method for support of cast organization, and computer program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cast organization support apparatus and method capable of achieving cast organization, considering connection difficulty between different steel types, and a computer program.SOLUTION: A cast organization support apparatus includes: calculating an adjacent frequency representing the frequency that the selected steel type is adjacent to other steel type when casting a steel type selected by a user, based on results that several kinds of steel types are cast consecutively (S205 and S210); furthermore, calculating connection difficulty representing the difficulty of connection between both steel types, based on the casting frequency between the adjacent frequency and the other steel type (S206 and S211); and displaying adjacent steel type information containing the calculated connection difficulty in an image display section (S213).

Description

  The present invention relates to a cast knitting support device for supporting cast knitting in continuous casting, a cast knitting support method, and a computer program for causing a computer to perform cast knitting support.

  In a continuous casting machine, a plurality of types of steel types are continuously cast to increase productivity. FIG. 7 is a diagram for explaining a process of continuous casting by a continuous casting machine. As shown in FIG. 7, in the steelmaking facility 200, the molten steel (charge) 211 is transferred from the converter 207 to the continuous casting machine 201 through a molten steel process. In the continuous casting machine 201, the molten steel 211 is stored in a container 202 called a ladle and poured into a kind of saucer 203 called a tundish, then passes through a mold 204 and hardens while gradually descending. 212 is finished. Then, the semi-finished product 212 is put into the soaking furnace 205 or the heating furnace 206 and rolled. Here, it is necessary to insert a jig called a sequence block (not shown) before and after charging with different steel types, and casting is interrupted during the preparation. In addition, when the number of consecutive charges increases to a certain degree or before or after casting a special steel type charge, it is necessary to replace the tundish 203 in terms of equipment and quality. Interrupt. Therefore, in order to improve the productivity of continuous casting, the casting order of charges is determined so as to minimize the number of insertions of the sequence block and the number of replacements of the tundish 203 while observing the restrictions on equipment and quality. There is a need.

  Generally, from the insertion of a sequence block to the next insertion, or from the tundish exchange to the next tundish exchange, the period from the start of casting to the interruption is regarded as one unit of continuous casting, and this is called casting. The determination of the casting order of the steel types and the number of charges in the cast is called cast knitting. This cast organization is accompanied by various constraints, and requires a wealth of experience and knowledge as well as advanced skills. Various techniques for supporting cast knitting have been proposed.

  For example, in Patent Document 1, an evaluation value is calculated from a constraint violation between charges across casts for the provisional casting order of charges, and an optimal solution of the evaluation value is obtained based on a simulated annealing method. A production plan creation method for obtaining the most preferable charge casting order is disclosed. According to this conventional technique, cast knitting can be performed automatically even in the case of high-mix / low-volume production where the constraints between charges across casts are severe.

JP 2004-348436 A

  In the case of the above-described prior art, the optimum solution finally obtained is an optimum value within the range of the explicitly given constraint condition, and therefore greatly depends on the constraint condition. Therefore, in this prior art, it is necessary to ensure the validity and reliability of the constraint condition given explicitly. However, it is difficult to accurately and comprehensively extract the constraint conditions in cast knitting, and it is extremely difficult to ensure the validity and reliability. In addition, the constraint conditions are not fixed and change depending on the operational status, quality, and the like. However, since the maintenance involves complicated work, it is difficult to ensure thorough maintenance. Under such circumstances, there is a problem that the conventional technology described above may not be able to withstand actual operation.

  The present invention has been made in view of such circumstances, and a main object of the present invention is to provide a cast composition support apparatus, a cast composition support method, and a computer program that can solve the above-described problems by utilizing the casting results. It is to provide.

  In order to solve the above-described problem, the cast knitting support device according to one aspect of the present invention is based on the result of continuous casting of a plurality of types of steel types, and in the case where one type of steel is cast, Based on the adjacent frequency indicating the frequency of adjacent to another steel type, the frequency calculating means for calculating the casting frequency indicating the frequency at which the other steel type is cast, the adjacent frequency and the casting frequency calculated by the frequency calculating means A connection difficulty level calculating means for calculating a connection difficulty level indicating difficulty in connection between the one steel type and the other steel type, and an output means for outputting the connection difficulty level calculated by the connection difficulty level calculating means. With.

  In this aspect, the connection difficulty level calculating means may be configured to calculate the connection difficulty level based on a difference between the adjacent frequency and the casting frequency.

  Further, in this aspect, the frequency calculation means is configured to calculate the adjacent frequency with the one steel type and another steel type preceding the one steel type, and the connection difficulty degree calculation means includes the one steel type. It may be configured to calculate a connection difficulty level indicating difficulty in connection between the other steel types and the preceding other steel types.

  Further, in this aspect, the frequency calculating means is configured to calculate the adjacent frequency with the one steel type and another steel type subsequent to the one steel type, and the connection difficulty level calculating means It may be configured to calculate a connection difficulty level indicating difficulty in connection between the steel type and other subsequent steel types.

  Further, according to the cast formation support method of one aspect of the present invention, when one steel type is cast based on the results of continuous casting of a plurality of types of steel types, the one steel type and another steel type are adjacent to each other. The step of calculating the adjacent frequency indicating the frequency and the casting frequency indicating the frequency at which the other steel type is cast, and the connection between the one steel type and the other steel type based on the calculated adjacent frequency and casting frequency The method includes a step of calculating a connection difficulty level indicating difficulty, and a step of outputting the calculated connection difficulty level.

  Further, the computer program according to one aspect of the present invention, based on the results of continuous casting of a plurality of types of steel types, determines the frequency with which the one steel type and another steel type are adjacent when one steel type is cast. A step of calculating a casting frequency indicating the adjacent frequency to be shown and a frequency at which the other steel type is cast, and a connection between the one steel type and the other steel type based on the calculated adjacent frequency and casting frequency. This is for causing the computer to execute the step of calculating the connection difficulty indicating the difficulty and the step of outputting the calculated connection difficulty.

  According to the cast knitting support device, the cast knitting support method, and the computer program according to the present invention, it is possible to realize appropriate cast knitting based on the difficulty of connection between different steel types.

The block diagram which shows the structure of the cast composition assistance apparatus which concerns on embodiment of this invention. The schematic diagram which shows an example of the layout of a casting performance information database. The schematic diagram which shows an example of the layout of a casting frequency information database. The flowchart which shows the procedure of the casting frequency information registration process performed with the cast composition assistance apparatus which concerns on embodiment of this invention. The flowchart which shows the procedure of the adjacent steel type information output process performed with the cast composition assistance apparatus which concerns on embodiment of this invention. The figure which shows an example of the adjacent steel type information display screen which displays adjacent steel type information. The figure for demonstrating the process of the continuous casting by a continuous casting machine.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. In addition, each embodiment shown below illustrates the method and apparatus for actualizing the technical idea of this invention, Comprising: The technical idea of this invention is not necessarily limited to the following. Absent. The technical idea of the present invention can be variously modified within the technical scope described in the claims.

[Configuration of cast composition support device]
FIG. 1 is a block diagram showing a configuration of cast composition support apparatus 1 according to the present embodiment. The cast composition support apparatus 1 is realized by a computer 1a. As shown in FIG. 1, the computer 1 a includes a main body 11, an image display unit 12, and an input unit 13. The main body 11 includes a CPU 11a, ROM 11b, RAM 11c, hard disk 11d, reading device 11e, input / output interface 11f, communication interface 11g, and image output interface 11h. The CPU 11a, ROM 11b, RAM 11c, hard disk 11d, and reading device 11e. The input / output interface 11f, the communication interface 11g, and the image output interface 11h are connected by a bus 11j.

  The CPU 11a can execute a computer program loaded in the RAM 11c. When the CPU 11a executes the computer program 14a for the cast composition support device of the present embodiment, the computer 1a functions as the cast composition support device 1.

  The ROM 11b is configured by a mask ROM, a PROM (Programmable ROM), an EPROM (Erasable PROM), an EEPROM (Electrically Erasable PROM), or the like. .

  The RAM 11c is configured by SRAM, DRAM, or the like. The RAM 11c is used for reading various computer programs recorded on the hard disk 11d. The RAM 11c is used as a work area for the CPU 11a when the CPU 11a executes a computer program.

  The hard disk 11d is installed with various computer programs to be executed by the CPU 11a, such as an operating system and application programs, and data used for executing the computer programs. The computer program 14a for the cast composition support device of this embodiment is also installed in the hard disk 11d.

  The reading device 11e is configured by a flexible disk drive, a CD-ROM drive, a DVD-ROM drive, or the like, and can read a computer program or data recorded on the portable recording medium 14. The portable recording medium 14 stores a computer program 14a for causing a computer to function as the cast composition support device 1. The computer 1a reads the computer program 14a from the portable recording medium 14, and the computer program 14a Can be installed on the hard disk 11d.

  The computer program 14a is not only provided by the portable recording medium 14, but also from an external device that is communicably connected to the computer 1a via an electric communication line (whether wired or wireless), through the electric communication line. It is also possible to provide. For example, the computer program 14a is stored in the hard disk of a server computer on the Internet. The computer 1a can access this server computer, download the computer program 14a, and install it on the hard disk 11d. is there.

  The hard disk 11d is installed with a multitask operating system such as Windows (registered trademark) manufactured and sold by Microsoft Corporation. In the following description, it is assumed that the computer program 14a according to the present embodiment operates on the operating system.

  Further, in the hard disk 11d, a casting record information database (DB) 101 storing casting record information indicating the results of continuous casting, and a casting frequency information database storing casting frequency information indicating the frequency of casting each steel type ( DB) 102 is provided. Details of each database will be described later.

  The input / output interface 11f is, for example, a serial interface such as USB, IEEE1394, or RS-232C, a parallel interface such as SCSI, IDE, or IEEE1284, and an analog interface including a D / A converter, an A / D converter, and the like. It is configured. An input unit 13 composed of a keyboard and a mouse is connected to the input / output interface 11f, and the user can input data to the computer 1a by using the input unit 13.

  The communication interface 11g is an Ethernet (registered trademark) interface. The computer 1a communicates with an external device using a predetermined communication protocol via the communication interface 11g.

  The image output interface 11h is connected to the image display unit 12 constituted by an LCD, a CRT, or the like, and outputs a video signal corresponding to the image data given from the CPU 11a to the image display unit 12. The image display unit 12 displays an image (screen) according to the input video signal.

  Next, details of each database of the above-described casting performance information DB 101 and casting frequency information DB 102 will be described with reference to the drawings.

(A) Casting result information DB 101
The casting performance information DB 101 is a database for storing casting performance information indicating the performance of continuous casting for each cast. FIG. 2 is a schematic diagram showing an example of the layout of the casting record information DB 101. As shown in FIG. 2, the casting record information DB 101 stores a casting date field 101a for storing a casting date which is a date on which continuous casting is performed, and a number of steel types indicating the number of steel types being cast. It has a steel type field 101b, a crop amount field 101c for storing a crop amount generated in casting, and a casting order field 101d for storing casting order information indicating the casting order of each steel type. Here, the crop amount means a cut-off amount of the component mixing region caused by the component difference when different steel types are adjacent to each other. The casting order information is composed of casting steel type information expressed in the form of “steel type name: number of charges”, and the casting order of each steel type is represented by arranging the casting steel type information in the order of casting. . For example, in the record “FGH765: 1, XYZ456: 3, PQR111: 2” in the third row illustrated in FIG. It shows that the steel type PQR111 is two-charge cast. In addition, said casting performance information is newly registered into casting performance information DB101, whenever continuous casting is implemented. Thereby, the results of continuous casting are accumulated in the casting performance information DB 101.

(B) Casting frequency information DB102
The casting frequency information DB 102 is a database for storing casting frequency information indicating the frequency at which each steel type is cast. FIG. 3 is a schematic diagram showing an example of the layout of the casting frequency information DB 102. As shown in FIG. 3, the casting frequency information DB 102 includes a steel type name field 102 a for storing the steel type name of each steel type, and a casting number field 102 b for storing the number of castings indicating the number of times the steel type has been cast. And a casting frequency field 102c for storing a casting frequency indicating the frequency at which the steel type is cast. This casting frequency information is generated by a casting frequency information registration process described later, and is registered in the casting frequency information DB 102.

[Operation of cast composition support device]
Next, the operation of the cast composition support apparatus 1 configured as described above will be described with reference to a flowchart and the like. The main processes executed by the cast knitting support device 1 of the present embodiment include (1) casting frequency information registration processing for registering casting frequency information in the casting frequency information DB 102, and (2) cast knitting. There is an adjacent steel type information output process for presenting adjacent steel type information regarding adjacent different steel types to a user (hereinafter referred to as “cast knitting person”). Hereinafter, each of these processes will be described.

(1) Casting frequency information registration process FIG. 4 is a flowchart showing the procedure of the casting frequency information registration process executed by the cast composition support apparatus 1 according to the present embodiment. In the following, it is assumed that a steel type list showing the steel type names of all the steel types is stored in advance in the hard disk 11d. As shown in FIG. 4, the cast composition support device 1 first identifies one steel type from among the steel types in the steel type list, and sets that steel type as a processing target (S101). Next, the cast composition support device 1 searches the casting record information DB 101 using the steel type to be processed as a key, and counts the number of records in which the steel type has been cast in the past by counting the number of records in which the steel type is included. Obtain (S102). Thereafter, the cast knitting support device 1 calculates the casting frequency of the steel type by dividing the acquired number of castings by the total number of records in the casting record information DB 101 (S103).

  Next, the cast knitting support device 1 registers the number of castings acquired in step S102 and the casting frequency calculated in step S103 in the casting frequency information DB 101 in association with the steel type to be processed (S104). Thereafter, the cast composition support device 1 determines whether or not all the steel types in the steel type list have been processed (S105). If it is determined that there is a steel type that has not yet been processed (NO in S105), the cast composition support device 1 returns to step S101 to set a new steel type as the process target, and then performs steps S102 to S104. Run. Thereafter, steps S101 to S104 are repeatedly executed until it is determined in step S105 that all steel types have been processed. If it is determined in step S105 that all steel types have been processed (YES in S105), the cast composition support device 1 ends the process.

  By the above casting frequency information registration process, casting frequency information is accumulated in the casting frequency information DB 102. This casting frequency information registration process is executed every time continuous casting is performed, that is, whenever new casting performance information is registered in the casting performance information DB 101. Thereby, the latest casting performance is reflected in casting frequency information DB102. The following adjacent steel type information output processing is executed based on the contents of the casting frequency information DB 102 and the casting performance information DB 101 in which the casting frequency information is accumulated as described above.

(2) Adjacent steel type information output process The cast knitting person instructs the cast knitting support apparatus 1 to execute the adjacent steel type information output process in order to examine whether or not adjacent different steel types can be combined. The cast composition support device 1 that has received this instruction executes the following adjacent steel type information output process.

  FIG. 5 is a flowchart showing the procedure of the adjacent steel type information output process executed by the cast composition support device 1 according to the present embodiment. The cast composition support apparatus 1 that has received an instruction to execute processing from the cast composition person first displays a steel type list screen on the image display unit 12 as shown in FIG. 5 (S201). This steel type list screen is generated using the above-described steel type list, and is displayed in a state where each steel type can be selected on the screen.

  The person in charge of casting uses the input unit 13 to select the steel type to be cast from the steel types displayed on the steel type list screen. When the cast composition support device 1 accepts the selection (S202), one of the steel types other than the selected steel type (hereinafter referred to as “selected steel type”) is cast immediately before the selected steel type. It sets as a steel type (S203). Next, the cast composition support apparatus 1 calculates the crop amount when the preceding steel type and the selected steel type are adjacent to each other (S204). Note that the crop amount in this case is a theoretical value of the crop amount calculated based on the component difference between the preceding steel type and the selected steel type.

  Next, the cast knitting support device 1 indicates the frequency at which the preceding steel type and the selected steel type are cast in this order when the selected steel type is cast based on the results of casting the selected steel type next to the preceding steel type. The adjacent frequency is calculated (S205). More specifically, the cast composition support device 1 first searches the casting performance information DB 101 using the preceding steel type and the selected steel type as keys, and counts the number of records in which these preceding steel type and selected steel type are arranged in this order. Thus, the number of times that these preceding steel types and selected steel types are cast in this order is obtained. Then, the cast knitting support device 1 calculates the adjacent frequency by dividing the acquired number of times by the number of castings of the selected steel type stored in the number of castings field 102b of the casting frequency information DB 102. This adjacent frequency corresponds to the probability that an event occurs in which the preceding steel type and the selected steel type are cast in this order under the condition that the selected steel type is cast.

  Next, the cast knitting support device 1 obtains a difference between the adjacent frequency of the preceding steel type and the selected steel type calculated in step S205 and the casting frequency of the preceding steel type stored in the casting frequency field 102c of the casting frequency information DB 102. Thus, the connection difficulty level indicating the difficulty in connecting the preceding steel type and the selected steel type is calculated (S206). Hereinafter, the details of the connection difficulty will be described.

<Connection difficulty>
In the present embodiment, the connection difficulty F indicating the difficulty in connecting different steel types is defined by the following equation (1).
F = P (A → B | B) −P (A) (1)
Here, P (A → B | B) indicates the adjacent frequency when steel type A and steel type B are cast in this order, and P (A) indicates the casting frequency of steel type A. The adjacent frequency is a value calculated in step S205 described above, and the casting frequency is a value stored in the casting frequency field 102c of the casting frequency information DB 102.

  P (A → B | B) corresponds to the ratio of steel type A in the steel type cast immediately before steel type B. Therefore, P (A → B | B) = 1 when steel type A is always cast immediately before steel type B, and P (A → B | B) = 0 when steel type A has never been cast. Become. Here, when P (A → B | B) = 0, the steel type A and the steel type B cannot be connected, and if the value approaches 1, the steel type A may be considered preferable as the preceding steel type. Is possible. However, even in the case of P (A → B | B) = 0, the steel type A has never been cast, and the connection between the steel type A and the steel type B is not problematic in terms of composition. obtain. In other words, the fact that steel grades A and B have no track record of adjacency, that is, that there is no positive case (feasible case) adjacent to steel grades A and B is that the adjacency of steel grades A and B is a negative case (impossible It is possible that there is no such case, i.e., it merely indicates that the case is missing. Therefore, it is not appropriate to determine that the steel type A and the steel type B cannot be connected only by the fact that the steel types A and B are not adjacent to each other.

  On the other hand, when the casting frequency of the steel type A is high, it can be considered that the number of times that the steel type A and the steel type B are adjacent to each other is increased if the timings at which the steel types A and B are cast are determined independently. Therefore, when the casting frequency of the steel type A is high, it is appropriate to determine that the connection between the steel type A and the steel type B is difficult when the adjacent frequency of the steel types A and B is low.

From the above viewpoint, in the present embodiment, the following estimation can be performed based on the value of the connection difficulty F.
(A) If F is a positive value and larger than a predetermined threshold value, the steel type A and the steel type B are easily connected.
(B) If F is a negative value and smaller than a predetermined threshold value, it is difficult to connect steel grade A and steel grade B.
Here, as said threshold value, it can be set as the value determined suitably according to the number of the casting results, the number of types of steel grades, etc., for example.

  In addition to the above (a) and (b), particularly when P (A → B | B) = 0 and P (A)> α, it is estimated that the connection between the steel grade A and the steel grade B is impossible. . Here, the value of α is appropriately set according to the number of actual castings and the number of types of steel (for example, 0.1). In this case, the value calculated by the above equation (1) is not set as the connection difficulty F, and the predetermined maximum value is set as the connection difficulty F, so that both steel types cannot be connected. It may be.

  As described above, in the present embodiment, even when there is no track record in which the steel type A and the steel type B are adjacent to each other by using both values of P (A → B | B) and P (A). , Rather than just a negative case, it can be regarded as a lack of case. Therefore, even if only a positive case can be obtained as a result, connectivity between different steel types can be appropriately determined.

  Returning to FIG. 5, the cast composition support device 1 determines whether all the steel types other than the selected steel type have been set as the preceding steel types (S207). Here, when it is determined that there is a steel type that has not yet been set as the preceding steel type (NO in S207), the cast composition support device 1 returns to step S203, and sets the steel type that is not yet the preceding steel type as the preceding steel type. Thereafter, steps S204 to S206 are executed. Thereafter, steps S203 to S206 are repeatedly executed until it is determined in step S207 that all the steel types are set as the preceding steel types.

  If it is determined in step S207 that all the steel types other than the selected steel type have been set as the preceding steel types (YES in S207), the cast knitting support device 1 selects one of the steel types other than the selected steel type immediately after the selected steel type. (S208). Thereafter, the cast knitting support device 1 calculates the crop amount between the selected steel type and the subsequent steel type in the same manner as in steps S204 and S205 described above (S209), and determines the frequency with which the selected steel type and the subsequent steel type are connected in this order. The adjacent frequency shown is calculated (S210). Then, the cast knitting support device 1 obtains the difference between the adjacent frequency of the selected steel type and the subsequent steel type calculated in step S210 and the casting frequency of the subsequent steel type stored in the casting frequency field 102c of the casting frequency information DB 102. Thus, the connection difficulty level indicating difficulty in connecting the selected steel type and the subsequent steel type is calculated (S211).

  Thereafter, the cast knitting support device 1 determines whether or not all steel types other than the selected steel type are set as the subsequent steel types (S212), and when it is determined that there is a steel type that has not been set yet (NO in S212), The process returns to step S208. Thereafter, steps S208 to S211 are repeatedly executed until it is determined in step S212 that all the steel types are set as the subsequent steel types (YES in S212).

  When it is determined in step S212 that all the steel types other than the selected steel type have been set as the subsequent steel types (YES in S212), the cast composition support device 1 determines that the preceding steel type and the selected steel type calculated in steps S204 to S206 are in this order. Crop amount when connected, adjoining frequency and connection difficulty, and adjacency including crop amount, adjoining frequency and connection difficulty when selected steel type and subsequent steel type calculated in steps S209 to S211 are connected in this order Steel type information is displayed on the image display part 12 (S213).

  FIG. 6 is a diagram illustrating an example of an adjacent steel type information display screen that displays adjacent steel type information. As shown in FIG. 6, on the adjacent steel type information display screen 111, a first display column 111a for displaying the selected steel type, a second display column 111b for displaying the adjacent steel type information related to the preceding steel type, and the subsequent A third display column 111c for displaying adjacent steel type information related to the steel type is provided. In the second display column 111b, the preceding steel types respectively stored in the crop amount field 101b and the casting frequency field 101c of the casting frequency information DB 102 and the crop amount and connection difficulty calculated in steps S204 and S206 described above, respectively. The number of castings and the casting frequency are displayed for each preceding steel type. Further, in the third display column 111c, the crop amount and connection difficulty calculated in steps S209 and S211 described above, and the number of castings and the casting frequency of the subsequent steel types are displayed for each subsequent steel type.

  The cast organizer confirms the connection difficulty value by referring to the adjacent steel type information display screen 111, and based on the value, considers which steel type for the selected steel type is set as the preceding steel type and / or the subsequent steel type. To do. Specifically, in connection with the estimation rules of (a) and (b) above, the steel grade that is estimated to be easily connected to the selected steel grade is adjacent and connected to the selected steel grade. Cast knitting is performed so that the steel grades that are difficult to perform are not adjacent. In addition, when the degree of difficulty of connection shows the maximum value, that is, when P (A → B | B) = 0 and P (A)> α, cast knitting is performed so that the steel types A and B are not adjacent to each other. Do. Thereby, the suitable cast organization which considered the connectivity between different steel types is realizable. Therefore, it becomes possible to cope with the steelmaking process of high-mix and low-volume production. Even when the connectivity is good, when the amount of crop is relatively large, it may be assumed that other steel types are adjacent to each other in order to reduce the amount of crop.

  In the case of the present embodiment, by using both the adjacent frequency and the casting frequency, not only the fact that there is no adjacent track record, but also the steel type and a specific steel type in spite of being a steel type cast at a high frequency. It is possible to determine whether or not there is a track record of adjoining, or whether there is no track record of adjoining because the steel type is not cast. In the former case, that is, when there is no track record adjacent to the steel type cast at a high frequency, it can be estimated that the connection cannot be made. In other words, it can be said that negative cases are created from positive cases. Therefore, even if only a positive case can be obtained as a casting record, it is impossible to realize the adjacency between different steel types that have no casting record because it is a negative case, or there is simply no case. Therefore, it is possible to appropriately determine whether it is feasible.

  Further, as described above, the adjacent steel type information display screen 111 shows information on both the preceding steel type and the subsequent steel type. Therefore, the cast organization person can efficiently examine which steel type should be arranged before and after the selected steel type, and whether the selected steel type should be arranged at the beginning or the end of the cast.

  Further, in the case of the present embodiment, since the connection difficulty level between different steel types is calculated based on the results of continuous casting performed one after another, this connection difficulty level is automatically appropriate depending on the casting performance. A value will be required. Therefore, in the present embodiment, it is not necessary to perform maintenance work or the like for the constraint conditions of cast knitting, which is necessary in the prior art.

(Other embodiments)
In the above-described embodiment, the adjacent steel type information including the connection difficulty level between different steel types is presented to the cast knitting person, and the cast knitting person examines the determination of the steel type to be adjacent based on the adjacent steel type information. However, the cast composition support device 1 may perform the determination up to the steel type to be adjacent. For example, the cast knitting support device 1 extracts a plurality of preceding steel grades and / or succeeding steel grades whose connection difficulty and crop amount values are smaller than predetermined values, and presents them to the cast knitting personnel as candidates for the steel grades adjacent to them. You may make it do.

  In the above-described embodiment, the configuration in which all processing of the computer program 14a is executed by the single computer 1a has been described. However, the present invention is not limited to this, and the computer program 14a and It is also possible to provide a distributed system in which similar processing is executed by a plurality of devices (computers). More specifically, the cast composition support is performed by a client server system in which a client operated by a cast organizer and a server having a casting performance information DB perform data communication to perform the same processing as the computer program 14a. An apparatus may be realized.

  A cast knitting support device, a cast knitting support method, and a computer program according to the present invention include a cast knitting support device and a cast knitting support method for supporting cast knitting when different steel types are continuously cast, and a cast knitting support for a computer. It is useful as a computer program for performing

DESCRIPTION OF SYMBOLS 1 Cast organization support apparatus 1a Computer 11 Main body 11a CPU
11b ROM
11c RAM
11d hard disk 11e reading device 11f input / output interface 11g communication interface 11h image output interface 11j bus 12 image display unit 13 input unit 14 portable recording medium 14a computer program 101 casting performance information database 102 casting frequency information database 111 adjacent steel type information display screen

Claims (6)

Based on the results of continuous casting of multiple types of steel types, when one steel type is cast, the adjacent frequency indicating the frequency with which the one steel type and the other steel type are adjacent, and the other steel type is cast. A frequency calculating means for calculating a casting frequency indicating the frequency;
Based on the adjacent frequency and casting frequency calculated by the frequency calculation means, a connection difficulty level calculation means for calculating a connection difficulty level indicating difficulty in connection between the one steel type and the other steel type, and
A cast composition support apparatus comprising: output means for outputting the connection difficulty calculated by the connection difficulty calculation means. The connection difficulty level calculating means is configured to calculate the connection difficulty level based on a difference between the adjacent frequency and the casting frequency.
The cast composition support apparatus according to claim 1. The frequency calculating means is configured to calculate the adjacent frequency with the one steel type and another steel type preceding the one steel type,
The connection difficulty level calculating means is configured to calculate a connection difficulty level indicating difficulty in connection between the one steel type and the preceding other steel type.
The cast composition support device according to claim 1 or 2. The frequency calculating means is configured to calculate the adjacent frequency with the one steel type and another steel type following the one steel type,
The connection difficulty level calculating means is configured to calculate a connection difficulty level indicating difficulty in connection between the one steel type and the subsequent other steel types.
The cast organization support apparatus according to any one of claims 1 to 3. Based on the results of continuous casting of multiple types of steel types, when one steel type is cast, the adjacent frequency indicating the frequency with which the one steel type and the other steel type are adjacent, and the other steel type is cast. Calculating a casting frequency indicating the frequency;
Based on the calculated adjacent frequency and casting frequency, calculating a connection difficulty level indicating difficulty in connection between the one steel type and the other steel type;
And a step of outputting the calculated connection difficulty level. Based on the results of continuous casting of multiple types of steel types, when one steel type is cast, the adjacent frequency indicating the frequency with which the one steel type and the other steel type are adjacent, and the other steel type is cast. Calculating a casting frequency indicating the frequency;
Based on the calculated adjacent frequency and casting frequency, calculating a connection difficulty level indicating difficulty in connection between the one steel type and the other steel type;
A computer program for causing a computer to execute a step of outputting the calculated connection difficulty level.

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