JP5439288B2 - Steel design support system, steel design support method, and computer program - Google Patents

Description

  The present invention relates to a steel material design support system and a steel material design support method for providing information for supporting a steel material design work, and a computer program for causing a computer to provide information for supporting a steel material design work.

  In the design work of steel materials, it is important to select an appropriate steel type that satisfies specifications (quality requirements) given by customers. Especially for designers with little experience, it is not easy to select an appropriate steel grade according to the specifications, and there may be cases where a steel grade that satisfies the requirements but is of an excessively high quality or a grade that does not satisfy the requirements may be selected. is there. In order to support the design of such steel materials, in Patent Document 1, design knowledge determined using rules from manufacturing conditions is stored in a knowledge database, and manufacturing conditions determined by the designer are given to the knowledge database. In this case, a steel quality design support method for extracting related knowledge from a knowledge database and providing guidance to a designer is disclosed. In Patent Document 2, the past performance information of the mechanical test characteristics and manufacturing conditions of the steel type is stored in the database, and the steel type that matches the input required characteristic is searched from the database. When there is no information, the degree of similarity between the required characteristics and each steel type is obtained, and the actual information on the manufacturing conditions of the most similar steel type is set as the initial information of the manufacturing condition design for the new steel type, and the material is predicted by simulation. A steel plate quality design apparatus is disclosed.

JP 2007-264934 A JP-A-5-287342

  However, in the method described in Patent Document 1, the designer needs to determine the manufacturing conditions to be given to the knowledge database. The manufacturing conditions are included in the design of the steel material along with the selection of the steel type, and the designer needs to design the steel material himself without obtaining assistance from this method in order to prepare the data to be entered in the knowledge database. . This is particularly burdensome for inexperienced designers. Moreover, if the manufacturing conditions determined by the designer are not appropriate, appropriate related information cannot be extracted from the knowledge database, and as a result, it becomes difficult for the designer to select an appropriate steel type. In the apparatus described in Patent Document 2, the material prediction by the simulation is performed when there is no steel type information that perfectly matches the input required characteristics in the database, but it is appropriate if the prediction accuracy is low. Information for selecting a suitable steel grade cannot be provided to the designer.

  The present invention has been made in view of such circumstances, and a main object thereof is to provide a steel material design support system, a steel material design support method, and a computer program capable of solving the above-described problems.

In order to solve the above-described problem, the steel material design support system according to one aspect of the present invention stores a requirement specification from a customer in a steel material design performed in the past and a steel type applied to the requirement specification. The information storage unit, the steel type information storage unit that stores the characteristics of each steel type, the input unit that receives input of the required specifications from the customer including the characteristics of the steel types, and the required specifications that are the same and similar to the input required specifications Candidate determination means for determining a steel type as a candidate based on the steel type applied to the searched requirement specification, retrieved from the record information storage unit, and the candidate steel type stored in the steel type information storage unit but whether it shall comply with the characteristics included in the requirement specification inputted, or is intended to partially compatible and determining appropriateness determination means for determining in which incompatible, by the propriety determining means A steel grade determined to conform to the characteristics included in the required specifications, a steel grade determined to partially match the characteristics included in the required specifications, and a steel class determined not to conform to the characteristics included in the required specifications. And an output unit that outputs each of them in an identifiable manner .

  In this aspect, the candidate determination means includes an extraction means for extracting the steel type applied to the searched requirement specification from the record information storage unit, and a steel type extracted based on a predetermined condition. And obtaining means for obtaining steel types belonging to the same group as candidate steel types.

  Moreover, in the said aspect, the said acquisition means is comprised so that the steel type which belongs to the same group as the extracted steel type may be acquired as a candidate steel type on the said conditions that the use and main component of a steel type correspond at least. It is preferable that

  Further, in the above aspect, the candidate determination unit may use the same or similar requirement specification having the same or similar requirement specification as the same and similar requirement specification as the same result as the plurality of items included in the inputted requirement specification. It is preferable to be configured to search from the information storage unit.

  Further, in the above aspect, the candidate determining means searches the actual information storage unit for a requirement specification including at least the same or similar standard as the standard included in the input requirement specification as the same and similar requirement specification. It is preferable that it is comprised.

  Further, in the above aspect, the output unit includes a determination result of the suitability determination unit, and is configured to output a screen for selecting a steel type to be used for design from candidate steel types, and the input Is configured to accept selection of a steel type to be used for design from candidate steel types when the screen is output, and the steel material design support system is configured to input the required specification and the selected It is preferable to further include a writing means for storing the steel type in the record information storage unit.

In the above aspect, the steel design support system further includes a test result information storage unit that stores a test result related to the characteristics of each steel type, and the output unit includes the candidate steel type, and the steel type includes the request. Output together with selectable identification information for identifying whether it is suitable for a characteristic included in the specification, partially compatible or non-compliant, and the identification information is selected It is preferable that the test result related to the characteristics of the candidate steel types stored in the test result information storage unit is output so as to be comparable with the required specifications .

Further, the steel material design support method according to one aspect of the present invention includes a step of receiving input of a requirement specification including a characteristic of a steel type, a requirement specification from the customer in the steel material design performed in the past, and the requirement specification. From the record information storage unit that stores the steel grade applied to the requirement specification, a requirement specification identical and similar to the inputted requirement specification is searched, and based on the steel grade applied to the searched requirement specification, it becomes a candidate. The step of determining the steel type and the characteristics of the candidate steel type are read from the steel type information storage unit storing the characteristics of each steel type, and the candidate steel type conforms to the characteristics included in the inputted required specifications. or it is partially or is intended to fit, and determining whether those that do not fit, the required specification is determined to conform to the characteristics contained in the steel species, included in the required specifications That property partially compatible with the determined grades, and each of the determined grades as not compatible with the characteristics included in the requirements specification, and a step of outputting distinguishably.

Further, the computer program according to one aspect of the present invention includes an input unit, an output unit, and performance information for storing a requirement specification from a customer in designing a steel material implemented in the past and a steel type applied to the requirement specification. A computer program for causing a computer comprising a storage unit and a steel type information storage unit for storing characteristics of each steel type to provide information for supporting the design of the steel material , wherein the input unit sets the characteristics of the steel type A step of receiving an input of a requirement specification from a customer, and searching for a requirement specification that is the same and similar to the input requirement specification from the record information storage unit, and based on the steel type applied to the retrieved requirement specification Te, determining the type of steel to be a candidate, reads steels characteristic to be the candidate from the steel type information storage unit, steel type to be the candidate, requested specifications entered Or it is intended to conform to the characteristics included in the determination whether intended to partially relevant, determining whether the one that does not fit, the output unit is compatible with the characteristics included in the required specifications Each of the determined steel types, the steel types determined to be partially compatible with the characteristics included in the required specifications, and the steel types determined not to be compatible with the characteristics included in the required specifications are output in an identifiable manner ; Is executed by the computer.

  According to the steel material design support system, the steel material design support method, and the computer program according to the present invention, information for selecting an appropriate steel type can be provided to the designer.

The schematic diagram which shows the whole structure of the steel material design support system which concerns on embodiment. The block diagram which shows the structure of the server apparatus with which the steel material design support system which concerns on embodiment is provided. The schematic diagram which shows an example of a past example database. The schematic diagram which shows an example of a steel type database. The schematic diagram which shows an example of a steel type group definition database. The schematic diagram which shows an example of a test results database. The block diagram which shows the structure of the client apparatus which concerns on embodiment. The schematic diagram which shows an example of a requirement specification. The flowchart which shows the procedure of the steel material design assistance process of the steel material design assistance system which concerns on embodiment (the first half). The flowchart which shows the procedure of the steel material design assistance process of the steel material design assistance system which concerns on embodiment (the second half). The flowchart which shows the procedure of a past case search process. The flowchart which shows the procedure of the same group steel type search process. The flowchart which shows the procedure of a component request | requirement conformity determination process. The schematic diagram which shows an example of the determination result of a component requirement conformity determination process. The flowchart which shows the procedure of a material characteristic request | requirement conformity determination process. Schematic diagram showing an example of the judgment result of the material property requirement conformity judgment process The schematic diagram which shows an example of a steel type search result screen.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

[Structure of steel design support system]
FIG. 1 is a schematic diagram showing an overall configuration of a steel material design support system according to the present embodiment. The steel material design support system 1 is a client server system that uses an information network such as the Internet or an intranet, and includes a server device 2 and a client device 3. The server device 2 and the client device 3 are connected by an information network 5 so that data communication is possible.

<Configuration of Server Device 2>
FIG. 2 is a block diagram illustrating a configuration of the server device 2. The server device 2 is realized by a computer 2a. As shown in FIG. 2, the computer 2 a includes a main body 21, an image display unit 22, and an input unit 23. The main body 21 is provided with a CPU 21a, ROM 21b, RAM 21c, hard disk 21d, reading device 21e, input / output interface 21f, communication interface 21g, and image output interface 21h. The output interface 21f, the communication interface 21g, and the image output interface 21h are connected by a bus 21j.

  The CPU 21a can execute a computer program loaded in the RAM 21c. And when the said CPU 21a runs the computer program 24a for servers of the steel material design support system 1, the computer 2a functions as the server apparatus 2. FIG.

  The ROM 21b is configured by a mask ROM, PROM, EPROM, EEPROM, or the like, and stores a computer program executed by the CPU 21a, data used for the same, and the like.

  The RAM 21c is configured by SRAM, DRAM, or the like. The RAM 21c is used for reading the computer program 24a recorded on the hard disk 21d. Further, when the CPU 21a executes a computer program, it is used as a work area for the CPU 21a.

  The hard disk 21d is installed with various computer programs to be executed by the CPU 21a, such as an operating system and application programs, and data used for executing the computer programs. A server computer program 24a is also installed in the hard disk 21d.

  The reading device 21e 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 24. The portable recording medium 24 stores a computer program 24a for causing the computer to function as the server device 2. The computer 2a reads the computer program 24a from the portable recording medium 24, and stores the computer program 24a. It can be installed on the hard disk 21d.

  The computer program 24a is not only provided by the portable recording medium 24, but also from an external device that is communicably connected to the computer 2a via an electric communication line (whether wired or wireless). It is also possible to provide through. For example, the computer program 24a is stored in the hard disk of a server computer on the Internet. The computer 2a can access the server computer, download the computer program, and install it on the hard disk 21d. is there.

  For example, a multitask operating system such as Windows (registered trademark) manufactured and sold by US Microsoft Corporation is installed in the hard disk 21d. In the following description, it is assumed that the computer program 24a according to the present embodiment operates on the operating system.

  The hard disk 21d is provided with a past case database 101, a steel type database 102, a steel type group definition database 103, and a test result database 104. FIG. 3 is a schematic diagram illustrating an example of the past case database 101. The past case database 101 is a table for storing past steel design result information, and the design result information includes information on steel specifications applied to the required specifications from the past customers and the required specifications, One design record information is stored in the past case database 101 as one record. The past case database 101 stores a field 101a for storing past case numbers, a field 101b for storing JIS standards for steel materials, and the size of a steel material, for example, the diameter of a cross-sectional circle in the case of a steel bar having a circular cross section. A field 101c for storing a customer code that is information for identifying a customer (customer), a field 101e for storing presence / absence of heat treatment such as quenching, annealing, and tempering, and a processing classification such as rolling, And a field 101p for storing the steel grade applied in the case.

  In addition, although the structure which provides the field which stores the steel material JIS specification in the past case database 101 mentioned above was described, it is not limited to this. The standard information stored in the past case database may be a public standard such as a national standard such as ASTM, or may be a proprietary standard defined in-house.

  FIG. 4 is a schematic diagram showing an example of the steel type database 102. The steel type database 102 is a table for storing information on steel types, a field 102a for storing steel types, fields 102b, 102c,... For storing component management value ranges, and a field for storing steel type codes assigned to each steel type. 102p. The component management value range is a range of the value of the contained component determined for each steel type, and is determined for each component such as carbon, silicone, and magnesium. For example, the carbon component management value range of steel type A has an upper limit of 0.17% and a lower limit of 0.19%. In the present embodiment, the steel type code is configured by combining a code indicating the use, a code indicating the main component, a code indicating the carbon content, and the like. For example, the steel type code of steel type A is “AABB... 18” in which a code “AA” indicating a use, a code “BB” indicating a main component, a code “18” indicating a carbon content, and the like are combined. Yes.

  FIG. 5 is a schematic diagram showing an example of the steel type group definition database 103. The steel type group definition database 103 is a database that stores information (definition flags) for defining the steel types of the same group, and is included in each code (usage code, main component code, carbon content code, etc.) included in the steel type code. Correspondingly, regions 103a, 103b,..., 103p are provided for storing definition flags indicating whether or not the codes are used for defining the steel types of the same group. For example, if the use code and the main component code are codes used for the definition of steel types in the same group, and the carbon content code is a code not used for the definition of steel types of the same group, the use code and main components code The definition flags of the regions 103a and 103b associated with the code are set to “1”, and the definition flag of the region 103p associated with the carbon content code is set to “0”. For example, when only the definition flag of the use code and the main component code is set to “1”, all steel types having the same use code and main component code are set to the same group. That is, in the example shown in FIG. 4, all of the steel types A to I having the same “AABB” in the steel type codes are in the same group.

  FIG. 6 is a schematic diagram illustrating an example of the test result database 104. The test result database is a table for storing results of tests such as quenching hardness performed in the past, a field 104a for storing test numbers, a field 104b for storing steel type names, and quenching. And a field 104p for storing test results such as hardness. Although FIG. 6 shows an example in which test results of 9 mm quenching hardness are stored, the test result database 104 also stores other test results such as tensile strength.

  The input / output interface 21f 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 23 composed of a keyboard and a mouse is connected to the input / output interface 21f, and the user can input data to the computer 2a by using the input unit 23.

  The communication interface 21g is an Ethernet (registered trademark) interface. The communication interface 21g is connected to the client device 3 via a LAN. The computer 2a can transmit and receive data to and from the client device 3 connected to the LAN using a predetermined communication protocol through the communication interface 21g. The communication interface 21g can receive the input of the information by receiving the information transmitted from the client device 3, and can output the information by transmitting the information to the client device 3. it can.

  The image output interface 21h is connected to an image display unit 22 composed of an LCD, a CRT or the like, and outputs a video signal corresponding to the image data given from the CPU 21a to the image display unit 22. The image display unit 22 displays an image (screen) according to the input video signal.

<Configuration of Client Device 3>
FIG. 7 is a block diagram showing a configuration of the client apparatus 3 according to the present embodiment. The client device 3 is realized by a computer 3a. As shown in FIG. 7, the computer 3 a includes a main body 31, an image display unit 32, and an input unit 33. The main body 31 includes a CPU 31a, ROM 31b, RAM 31c, hard disk 31d, reading device 31e, input / output interface 31f, communication interface 31g, and image output interface 31h. The CPU 31a, ROM 31b, RAM 31c, hard disk 31d, reading device 31e, input device 31e The output interface 31f, the communication interface 31g, and the image output interface 31h are connected by a bus 31j.

  The hard disk 31d is installed with various computer programs to be executed by the CPU 31a, such as an operating system and application programs, and data used for executing the computer programs. A client computer program 34a is also installed in the hard disk 31d.

  The reading device 31e 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 34. The portable recording medium 34 stores a computer program 34a for causing the computer to function as the client device 3. The computer 3a reads the computer program 34a from the portable recording medium 34, and stores the computer program 34a. It can be installed on the hard disk 31d.

  The computer program 34a is not only provided by the portable recording medium 34, but also from an external device that is communicably connected to the computer 3a by an electric communication line (whether wired or wireless). It is also possible to provide through. For example, the computer program 34a is stored in the hard disk of a server computer on the Internet. The computer 3a can access the server computer, download the computer program, and install it on the hard disk 31d. is there.

  The hard disk 31d 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 34a according to the present embodiment operates on the operating system.

  Since the other configuration of the client device 3 is the same as the configuration of the server device 2 described above, the description thereof is omitted.

[Operation of steel design support system]
Hereinafter, the operation of the steel material design support system 1 according to the present embodiment will be described.

  When starting the design work of the steel material, the required specification of the steel material from the customer (customer) is given. FIG. 8 is a schematic diagram showing an example of the required specification. As shown in FIG. 8, the required specifications include standards, steel material sizes, customer codes individually assigned to consumers, processing categories, component management value ranges, test value ranges, and the like. In this example, “X” is the required steel standard, the diameter of the cross-section circle of the round bar steel is 65 mm as the required steel size, “T0003” is the customer code, and “P” is the processing category. The lower limit value 0.17% and upper limit value 0.23% of the carbon content are specified as the component management value range, and the lower limit value 31 and upper limit value 36 of the 9 mm quenching hardness are specified as the test value range, respectively.

  When the required specification of the steel material as described above is given and the design of the steel material is started, the designer causes the steel material design support system 1 according to the present embodiment to execute the following steel material design support processing. FIG. 9A and FIG. 9B are flowcharts showing a steel material design support processing procedure of the steel material design support system 1 according to the present embodiment. The designer operates the input unit 33 of the client device 3 to input the given required specification to the client device 3. The CPU 31a of the client device 3 accepts the input of the required specification (Step S101), and transmits the data of the required specification to the server device 2 (Step S102).

  When the CPU 21a of the server apparatus 2 receives the required specification data, it executes a past case search process for searching the past case database 101 for design results information of past steel materials including the same and similar required specifications as the required specifications (step S103). ).

  FIG. 10 is a flowchart showing a procedure of past case search processing. First, the CPU 21a searches the past case database 101 for design result information including the same standard, customer code, and processing category as the input required specification (step 201). This process will be described using the example shown in FIG. In this case, design result information including the same standard, customer code, and machining category as the standard “X”, customer code “T0003”, and machining category “P” included in the required specifications is retrieved. In the example of FIG. 3, the design result information of the past case numbers 1 to 4 and 6 matches the above condition and is obtained as a search result.

  Next, the CPU 21a determines whether or not one or more design record information is obtained as a search result in step S201 (step S202). If one or more design record information is obtained (YES in step S202). Then, the process returns to the call address of the past case search process in the main routine. In the above example, since six pieces of design record information are obtained, the past case search process ends here. On the other hand, if no design result information is obtained as a result of the search (NO in step S202), the CPU 21a stores design result information including the same standard and processing category as the input required specifications in the past case database. Search from 101 (step 203).

  Next, the CPU 21a determines whether or not one or more design record information is obtained as a search result in step S203 (step S204). If one or more design record information is obtained (YES in step S204). ), The process returns to the call address of the past case search process in the main routine. If no design result information is obtained as a result of the search in step S203 (NO in step S204), the CPU 21a obtains design result information including the same standard as the input required specification from the past case database 101. Search is performed (step 205), and the process returns to the call address of the past case search process in the main routine. If no design result information is obtained even by the search in step S205, error information indicating that there is no past case is transmitted to the client device 3, and an error display is displayed on the image display unit 32 of the client device 3. Is done.

  Next, the CPU 21a selects one of the design results information searched in the past case search process (step S104). In the above-described example, design result information of past case numbers 1 to 4 and 6 is searched in the past case search process. Accordingly, in step S104, design result information of one of these past case numbers 1 to 4 and 6 is selected.

  CPU21a performs the same group steel type search process which searches the steel type of the same group as the steel type applied in the selected design performance information (step S105). FIG. 11 is a flowchart showing the procedure of the same group steel type search process. In the same group steel type search process, the CPU 21a specifies a steel type name included in the selected design performance information and acquires a steel type code from the steel type database 102 (step S301). In the example shown in FIG. 3, the steel type name “A” is the design result information of the past case numbers 1 and 2, the steel type name “C” is the design result information of the past case number 3, and the design of the past case numbers 4 and 6 is designed. The grade information “D” is included in the result information. Therefore, in the process of step S302, when the design result information of the past case numbers 1 and 2 is selected, the steel type code “AABB ... 18” of the steel type name “A” is acquired, and the design result of the past case number 3 is acquired. When the information is selected, the steel type code “AABB... 19” of the steel type name “C” is acquired, and when the design performance information of the past case numbers 4 and 6 is selected, the steel type code “D”. The steel type code “AABB... 20” is acquired (see FIG. 4).

  After the process of step S301, the CPU 21a refers to the steel type group definition database 103 and identifies a code used for defining the steel type of the same group among the codes included in the steel type code (step S302). Specifically, the code for which the definition flag is set to “1” in the steel type group definition database 103 is specified. Referring to the example shown in FIG. 5, it is the usage code and the principal component code that have the definition flag set to “1”. Therefore, the application code corresponding to the first to second digits in the steel type code and the main component code corresponding to the third to fourth digits in the steel type code are used to define the steel types of the same group. In the above example, the steel type codes “A”, “C”, “D” of the steel type codes “AABB ... 18”, “AABB ... 19”, “AABB ... 20” are the first to fourth digits. Both are “AABB”. Therefore, steel types having a steel type code whose first to fourth digit codes are “AABB” belong to the same group.

  After the processing in step S302, the CPU 21a searches the steel types registered in the steel type database 102 for a steel type in the same group as the steel type applied in the selected design performance information (step S303). In the above example, a steel type in which the first to fourth digits of the steel type code are “AABB” is searched. As a result, “A”, “C”, “D”, “E”, “F”, “G”, and “I” are searched (see FIG. 4). After the process of step S303, the CPU 21a returns the process to the calling address of the same group steel type search process in the main routine.

  Next, the CPU 21a determines whether or not all of the design performance information searched in the past case search process has been selected (step S106). If unselected design performance information remains (in step S106). NO), the process is moved to step S104, one of the unselected design record information is selected (step S104), and the same group steel type search process is executed for the design record information (step S105).

  On the other hand, when all the design performance information searched in the past case search process has already been selected (YES in step S106), the CPU 21a selects one of the steel types searched in the same group steel type search process. (Step S107), component requirement conformity determination processing for determining whether or not the selected steel type satisfies the component requirement specified in the required specification (Step S108), and the material characteristics in which the selected steel type is specified in the required specification The material characteristic requirement conformity determination process (step S109) for determining whether or not the requirement is satisfied is sequentially executed.

  FIG. 12 is a flowchart showing the procedure of the component requirement conformity determination process. In the component requirement conformity determination process, the CPU 21a acquires the component management value range of the selected steel type from the steel type database 102 (step S401). For example, when steel type A is selected, the upper limit value 0.17% and the lower limit value 0.19% of the carbon content of steel type A are acquired.

  Next, the CPU 21a selects one of the component ranges included in the input required specification (step S402). For example, in the example of FIG. 8, the lower limit value 0.17% and the upper limit value 0.23% of the carbon content, or other content range (content range of silicone, magnesium, etc.) is selected.

  The CPU 21a determines whether or not the component management value range acquired in step S401 is included in the selected component range (step S403). For example, the component management value range of carbon of steel type A is 0.17 to 0.19%, which is included in the range of carbon content 0.17 to 0.23% shown in the required specifications. Therefore, in this case, in step S403, it is determined that the acquired component management value range is included in the selected component range. On the other hand, the component management value range of carbon of steel type G is 0.2 to 0.24%, which exceeds the range of carbon content indicated in the required specifications. In this case, in step S403, it is determined that the acquired component management value range is not included in the selected component range.

  In step S403, when the acquired component management value range is included in the selected component range (YES in step S403), the CPU 21a is selected in association with the selected component (for example, carbon). Information indicating that the steel type conforms to the component range required in the required specifications (hereinafter referred to as “component conformity information”) is stored in the RAM 21c as a determination result (step S404), and the process proceeds to step S408.

  On the other hand, if the acquired component management value range is not included in the selected component range in step S403 (NO in step S403), the CPU 21a determines the selected component range and the component management acquired in step S401. It is determined whether or not the value range overlaps (step S405). For example, the component management value range of carbon of steel type G is 0.17 to 0.24%, which overlaps with the range of carbon content 0.17 to 0.23% shown in the required specifications. Therefore, in this case, in step S405, it is determined that the selected component range and the acquired component management value range overlap. On the other hand, the component management value range of carbon of steel type I is 0.24 to 0.27%, and does not overlap with the range of the carbon content shown in the required specifications. In this case, in step S405, it is determined that the selected component range and the acquired component management value range do not overlap.

  In step S405, if the selected component range and the acquired component management value range overlap (YES in step S405), the CPU 21a selects the selected component range in association with the selected component (for example, carbon). Information indicating that the steel grade partially conforms to the component range required in the required specifications (hereinafter referred to as “component partial conformity information”) is stored in the RAM 21c as a determination result (step S406), and the process proceeds to step S408. Move.

  On the other hand, when the selected component range does not overlap with the acquired component management value range in step S405 (NO in step S405), the CPU 21a excludes the selected steel type from the candidate steel type group (step S407). . In this process, specifically, information indicating that the selected steel type is excluded from the candidates is stored in the RAM 21c. After the process of step S407, the CPU 21a moves the process to step S408.

  In step S408, the CPU 21a determines whether or not all of the component ranges included in the input required specifications have already been selected (step S408). If a component range that has not yet been selected remains among the component ranges included in the required specifications (NO in step S408), the CPU 21a returns the process to step S402, and selects one of the unselected component ranges. Is selected (step S402), and the processing after step S403 is executed. On the other hand, when all of the component ranges included in the required specifications have already been selected (YES in step S408), the CPU 21a returns the process to the calling address of the component request conformity determination process in the main routine.

  FIG. 13 is a schematic diagram illustrating a determination result when the above-described component requirement conformance determination process is executed in the examples illustrated in FIGS. 3 to 6 and 8. In this example, as shown in FIG. 12, it is determined that the steel types A, C, D, E, and F conform to the component requirements (indicated by “◯” in FIG. 13), and the steel type G Is determined to be partially compatible with the component requirement (indicated by “Δ” in FIG. 13). Steel grade I is determined not to meet the component requirements and is excluded from the candidate steel grade group.

  FIG. 14 is a flowchart showing the procedure of the material property requirement conformity determination process. In the material property requirement conformity determination processing, the CPU 21a acquires the test results of the selected steel type from the test results database 104 (step S501). For example, when steel type A is selected, all 9 mm quenching hardness test results “28”, “30”, “29”, “31”, “33” registered in the test result database 104 of steel type A are selected. "," 32 "," 29 "," 33 "are acquired. Moreover, when other test results are registered in the test result database 104 for the steel type A, the test results are also acquired.

  Next, the CPU 21a selects one of the test value ranges included in the input required specification (step S502). For example, in the example of FIG. 8, the lower limit value 31 and the upper limit value 36 of 9 mm quenching hardness or other test value ranges are selected.

  The CPU 21a determines whether or not N1% or more of the test results acquired in step S501 falls within the selected test value range (step S503). For example, 9 test results of 9 mm quenching hardness of steel grade F are “33”, “34”, “32”, “33”, “34”, “37”, “35”, “33”, “32”. Eight of them fall within the test value range 31 to 36 of 9 mm quenching hardness in the input required specifications. For this reason, for example, when N1 is 90, for steel type F, N1% or more of the test result falls within the test value range, that is, it is determined that the material characteristics are suitable. Here, when no corresponding test result is acquired from the test result database, information indicating that determination is impossible (hereinafter referred to as “determination impossible information”) is stored in the RAM 21c.

  In step S503, when N1% or more of the acquired test results fall within the selected test value range (YES in step S503), the CPU 21a sets the selected test (for example, 9 mm quenching hardness). Correspondingly, information indicating that the selected steel type conforms to the test value range required in the required specifications (hereinafter referred to as “material property conforming information”) is stored in the RAM 21c as a determination result (step S504). Then, the process proceeds to step S508.

  On the other hand, in step S503, when N1% or more of the acquired test results do not fall within the selected test value range (NO in step S503), the CPU 21a determines that N2% of the acquired test results. It is determined whether or not the above is within the selected test value range (step S505). Here, N2 is a positive integer smaller than N1, and is set to 70, for example. In the examples of FIGS. 3 to 6 and 8, seven test results “35”, “37”, “38”, “36”, “35”, “32”, “36” of 9 mm quenching hardness of the steel type G are used. "5" falls in the test value range 31-36 of 9 mm quenching hardness in the input requirement specification. For this reason, for example, when N2 is 70, for steel type G, N2% or more of the test result falls within the test value range, that is, it is determined that the material characteristics are partially compatible.

  In step S505, when N2% or more of the acquired test results fall within the selected test value range (YES in step S505), the CPU 21a determines that the selected test (for example, 9 mm quenching hardness) is performed. Correspondingly, information indicating that the selected steel type partially matches the test value range required in the required specifications (hereinafter referred to as “material characteristic partial conformity information”) is stored in the RAM 21c as a determination result. (Step S506), the process proceeds to step S508.

  On the other hand, when N2% or more of the acquired test results do not fall within the selected test value range in step S505 (NO in step S505), the CPU 21a selects the selected test (for example, 9 mm quenching hardness). The information indicating that the selected steel type does not conform to the test value range required in the required specifications (hereinafter referred to as “material property nonconformity information”) is stored in the RAM 21c as a determination result ( In step S507), the process proceeds to step S508. For example, 4 out of 8 test results “28”, “30”, “29”, “31”, “33”, “32”, “29”, “33” of 9 mm quenching hardness of steel grade A The test results “28”, “30”, “29”, and “29” are out of the 9 mm quenching hardness test value ranges 31 to 36 in the input required specifications. Therefore, if N2 is 70 here, it will be determined that the material properties of steel type A are incompatible.

  In step S508, the CPU 21a determines whether or not all of the test value ranges included in the input required specifications have already been selected (step S508). If there is a test value range that has not yet been selected among the test value ranges included in the required specifications (NO in step S508), the CPU 21a returns the process to step S502, and among the unselected test value ranges. 1 is selected (step S502), and the processing after step S503 is executed. On the other hand, when all of the test value ranges included in the required specifications have already been selected (YES in step S508), the CPU 21a returns the process to the call address of the material property requirement conformity determination process in the main routine.

  FIG. 15 is a schematic diagram illustrating a determination result when the above-described material property requirement conformity determination process is executed in a case where N1 is 90 and N2 is 70 in the examples illustrated in FIGS. 3 to 6 and 8. In this example, as described above, it is determined that the material characteristics of the steel type A are incompatible (indicated by “x” in FIG. 15). For steel types C, D, and E, the 9 mm quenching hardness test results are not registered in the test result database 104, and thus cannot be determined (indicated by “-” in FIG. 15). Further, it is determined that the material characteristics of the steel type F are matched (indicated by “◯” in FIG. 15), and the material characteristics of the steel type G are partially matched (“Δ” in FIG. 15). It is determined as).

  When the material property requirement conformity determination process as described above is completed, the CPU 21a determines whether or not all of the steel types searched in the same group steel type search process have been selected (step S110), and an unselected steel type remains. If there is (NO in step S110), the process moves to step S107, and one of the unselected steel types is selected (step S107), and the component requirement conformity determination process (step S108) and material characteristics are selected for the steel type. A request conformity determination process (step S109) is executed.

  On the other hand, when all the steel types searched in the same group steel type search process have already been selected (YES in step S110), the CPU 21a shows the result of the steel type search and the conformity determination of the component request and the material property request. Steel type search result data is transmitted to the client device 3 (step S111).

  When receiving the steel type search result data, the CPU 31a of the client device 3 displays a steel type search result screen indicating the result of the steel type search and the conformity determination of the component request and the material property request on the image display unit 32 (step S112). FIG. 16 is a schematic diagram illustrating an example of a steel type search result screen. As shown in the figure, the steel type search result screen displays the results of the steel type search and the conformity determination of the component request and material property request in a table format. Each row of the table corresponds to the searched steel type, and the conformity determination result of the component request and the conformity determination result of the material property are shown for each steel type.

  In the steel type search result screen, the symbols (“○”, “△”, “×”) of the conformity judgment result are links for calling up the reference screen for selecting the steel type, and the symbol can be changed by operating the mouse or keyboard. When selected, a reference screen corresponding to the selected symbol is displayed. More specifically, when a component requirement conformity determination result symbol is selected, reference information regarding the component in the steel type corresponding to the symbol is displayed, and when a material property requirement conformity determination result symbol is selected. Reference information regarding test results for the steel type corresponding to the symbol is displayed. For example, when “◯” in the component requirement conformity determination result of carbon of steel type A is selected, a frequency distribution graph G11 of test results of the carbon content of steel type A is displayed. In the frequency distribution graph G11, the horizontal axis indicates the component value (carbon content) and the vertical axis indicates the frequency, and the required range of the carbon content in the required specifications is shown. When “x” is selected as the material characteristic requirement conformity determination result of 9 mm quenching hardness of steel type A, a scatter diagram G21 of the test results of quenching hardness of steel type A is displayed. Similarly, when “○” is selected as the material property requirement conformity judgment result of 9 mm quenching hardness of steel type F, a scatter diagram G21 of quenching hardness test results of steel type F is displayed, and 9 mm quenching hardness of steel type G is displayed. When “Δ” is selected as the material characteristic requirement conformity determination result, a scatter diagram G21 of the test results of the quenching hardness of the steel type G is displayed. In these scatter diagrams G21 to G23, the horizontal axis is the quenching test position (distance from the end of the test piece to the quenching test position) in the test piece, and the vertical axis is the hardness. Moreover, as shown in FIG. 16, in the scatter diagrams G21 to G23, the test results of 9 mm quenching hardness of each steel type are displayed together with the test value range of 9 mm quenching hardness in the required specifications. That is, the CPU 31a selects the symbol of the conformity determination result while the steel type search result screen is displayed, and receives a reference information display instruction (YES in step S113), the test result necessary for displaying the reference information. Is requested to the server device 2 (step S114). When receiving the request data, the CPU 21a of the server device 2 refers to the test result database 104 and extracts the test result of the steel type corresponding to the selected symbol (step S115). For example, when “◯” is selected as the material property requirement conformity determination result of 9 mm quenching hardness of steel type F, the test result of 9 mm quenching hardness of steel type F is extracted from test result database 104. When the CPU 21a thus extracts the test results from the test result database 104, the CPU 21a transmits the test results to the client device 3 (step S116). When receiving the test result, the CPU 31a of the client device 3 creates the graph as described above and displays it on the image display unit 32 (step S117).

  The designer can design the steel material more appropriately by checking the reference information as described above. In other words, since the component requirement conformance judgment result and the material property requirement conformity judgment result are displayed on the steel type search result screen, if the designer looks at the steel type search result screen, each steel type conforms to the required component value. And whether it meets the required material properties. This is still useful for the steel type selection by the designer, but in the steel material design support system 1 according to the present embodiment, by providing the reference information described above, what component value the steel type has in the past examples. Or what material characteristic value it was. By referring to the graph, the designer can know how the component values or material property values in the past case are distributed over the required range, and use this to select the steel grade. Therefore, it is possible to select a steel type appropriately and easily.

  As shown in FIG. 16, each row of the table of the steel type search result screen is provided with a check box S for selection when adopted as a steel type used for design. The check box S is a selection graphical user interface object (control), and one of all the check boxes S displayed on the steel type search result screen can be selected by operating a mouse or a keyboard. When the designer determines the steel type to be selected with reference to the steel type search result screen and the above graph, the designer selects the selection box S corresponding to the steel type by operating the mouse or the keyboard. The steel type search result screen is provided with a registration button R for registering this steel type selection result in the database of the server device 2 as a past case. The registration button R is a control that can be selected by a mouse or keyboard operation. When the CPU 31a receives a steel type selection from the designer by the selection box S and a registration instruction to the database by the registration button R (step S118), the CPU 31a transmits registration instruction data including data indicating the selected steel type to the server device 2. (Step S119), and the process is terminated. When the server apparatus 2 receives the registration instruction data, the CPU 21a registers the steel type instructed in the registration instruction data and the input required specification in the past case database 101 (step S120), and ends the process. As a result, the design results of this steel material are accumulated in the database as past cases and used for future steel material design support.

  By configuring as described above, the steel material design support system 1 according to the present embodiment retrieves design result information including requirement specifications that are the same as or similar to the input requirement specifications from past cases, and based on the search results. The candidate steel grades are determined, whether each candidate steel grade satisfies the required specifications, and the judgment results are output as design support information, so the designer can easily select the appropriate steel grade from the judgment results. can do.

  Further, in the present embodiment, it is determined whether or not the steel type satisfies the required specifications for the component and material characteristics, and the determination result is displayed in three stages of “O”, “Δ”, and “X”. Therefore, the designer can easily grasp whether each steel type listed as a candidate satisfies the required specification, partially satisfies, or does not satisfy.

  Moreover, in order to enable selection of a more appropriate steel type, in the steel material design support system 1 according to the present embodiment, in addition to the above determination result, reference information regarding the test result of each steel type can be displayed. Yes. As a result, the designer can check the reference information and use it for selecting the steel grade when it is difficult to select the optimum steel grade based only on the component requirement conformity judgment result and the material property requirement conformity judgment result. it can. For example, in the case where both the component requirement conformity determination result and the material property requirement conformity determination result of a plurality of steel types are “◯”, it is difficult to select an optimum steel type only with these determination results. By confirming the reference information in such a case, the individual test results of each steel type can be confirmed, and a more appropriate steel type can be selected. Further, by displaying the reference information in a graph format such as a frequency distribution of test results and a scatter diagram, the designer can easily grasp the distribution of test results.

(Other embodiments)
In the above-described embodiment, past cases (design performance information) including the same or similar requirement specifications as the input requirement specifications are acquired from the past case database, and are the same as the steel types applied in these past cases. Although the structure which searches the steel grade of a group from a steel grade database and makes the steel grade obtained by this the candidate steel grade group selected was described, it is not limited to this. Steel types applied in past cases that include the same or similar requirement specifications as the input requirement specifications may be used as candidate steel type groups. However, the steel grades applied in the past cases are increased in terms of the number of steel grades to be evaluated for conformity judgment, increasing the degree of freedom in selecting steel grades, and making it possible to search for more suitable steel grades than those applied in past cases. It is preferable to search for the same group of steel types.

  In the embodiment described above, a past case (design performance information) including a requirement specification that is partially the same as the input requirement specification is used as a past case including a requirement specification that is the same and similar to the requirement specification. Although the configuration for searching from the database has been described, the present invention is not limited to this. Not only past cases that include the same requirement specifications as the input requirement specifications, but also past cases that include the requirement specifications that are partially similar to the input requirement specifications and past cases that include similar requirement specifications. It is good also as a structure searched from a past example database.

  Moreover, in embodiment mentioned above, although the steel material design support system 1 described the case where it comprised by the server apparatus 2 and the client apparatus 3, it is not limited to this. It is good also as a steel material design support system which mounts all the functions of the server apparatus 2 and the client apparatus 3 in one apparatus.

  In the above-described embodiment, the configuration in which all processing of the computer program 24a is executed by the single computer 2a has been described. However, the present invention is not limited to this, and processing similar to that of the computer program 24a described above is performed. It is also possible to make a distributed system in which a plurality of devices (computers) are executed in a distributed manner. The same applies to the computer 3a.

  A steel material design support system, a steel material design support method, and a computer program according to the present invention include a steel material design support system and a steel material design support method that provide information for supporting a steel material design operation, and information that supports a steel material design operation to a computer. It is useful as a computer program for providing

DESCRIPTION OF SYMBOLS 1 Steel design support system 2 Server apparatus 2a Computer 21a CPU
21b ROM
21c RAM
21d hard disk 21g communication interface 24a computer program 3 client device 3a computer 31a CPU
31b ROM
31c RAM
31d hard disk 32 image output unit 33 input unit 34a computer program

Claims (9)

A performance information storage unit for storing the required specifications from customers in the design of steel materials implemented in the past and the steel type applied to the required specifications;
Steel type information storage unit for storing the characteristics of each steel type,
An input unit that accepts input of required specifications from customers including the characteristics of steel grades;
Candidate determination means for searching for a requirement specification that is the same as and similar to the input requirement specification from the record information storage unit, and determining a candidate steel type based on the steel type applied to the searched requirement specification;
Whether the candidate steel type stored in the steel type information storage unit conforms to the characteristics included in the input requirement specifications , partially conforms or does not conform Suitability judging means for judging;
The steel grade determined to conform to the characteristics included in the required specifications by the suitability determining means , the steel type determined to partially match the characteristics included in the required specifications, and the characteristics included in the required specifications An output unit that outputs each of the steel types determined as identifiable ,
A steel material design support system. The candidate determining means includes
An extracting means for extracting the steel type applied to the searched requirement specification from the record information storage unit;
An acquisition means for acquiring a steel type belonging to the same group as the extracted steel type as a candidate steel type based on a predetermined condition;
Comprising
The steel material design support system according to claim 1. The acquisition means is configured to acquire a steel type belonging to the same group as the extracted steel type as a candidate steel type on the condition that the use and main components of the steel type at least match.
The steel material design support system according to claim 2. The candidate determination means searches the actual information storage unit for the same or similar requirement specifications as the same and similar requirement specifications, at least some of the plurality of items included in the inputted requirement specification. Configured to,
The steel material design support system according to any one of claims 1 to 3. The candidate determining means is configured to retrieve a requirement specification including at least the same or similar standard as the standard included in the inputted requirement specification as the same and similar requirement specification from the result information storage unit. ,
The steel material design support system according to claim 4. The output unit includes a determination result of the suitability determination unit, and is configured to output a screen for selecting a steel type to be used for design from candidate steel types,
The input unit is configured to accept selection of a steel type used for design from candidate steel types when the screen is output;
A writing means for storing the input required specification and the selected steel type in the record information storage unit;
The steel material design support system according to any one of claims 1 to 5. A test result information storage unit for storing test results relating to the characteristics of each steel type;
The output unit identifies the candidate steel type as to whether the steel type conforms to the characteristics included in the required specifications, partially conforms or does not conform. When the identification information is selected, the test result relating to the characteristics of the candidate steel type stored in the test result information storage unit is output so as to be comparable with the required specification. and it is configured to,
The steel material design support system according to any one of claims 1 to 6. A step of accepting input of required specifications from a customer including characteristics of steel types ;
Search and search for requirement specifications that are the same as and similar to the input requirement specifications from the record information storage unit that stores the customer's requirement specifications and the steel types applied to the requirement specifications in the past steel design. Determining a candidate steel grade based on the steel grade applied to the required specifications;
Read the characteristics of the candidate steel type from the steel type information storage unit that stores the characteristics of each steel type, and whether the candidate steel type conforms to the characteristics included in the input required specifications , or partially Determining whether it is conforming or not conforming ;
A steel grade determined to conform to the characteristics included in the required specifications, a steel grade determined to partially match the characteristics included in the required specifications, and a steel class determined not to conform to the characteristics included in the required specifications. Outputting each identifiably , and
A steel material design support method. An input section, an output section, a performance information storage section for storing the required specifications from customers in the design of steel products implemented in the past and the steel types applied to the required specifications, and steel type information for storing the characteristics of each steel type A computer program for causing a computer including a storage unit to provide information for supporting the design of a steel material,
The input unit accepts input of required specifications from a customer including characteristics of steel types ;
Searching for the same and similar requirement specifications as the input requirement specifications from the record information storage unit, and determining a steel type as a candidate based on the steel types applied to the retrieved requirement specifications;
Read out the characteristics of the candidate steel type from the steel type information storage unit, and whether the candidate steel type conforms to the characteristics included in the input required specifications or is partially compatible Determining whether it is incompatible ;
If the output unit does not conform to the steel grade determined to conform to the characteristics included in the required specifications, the steel grade determined to partially match the characteristics included in the required specifications, and the characteristics included in the required specifications Outputting each of the determined steel types in an identifiable manner ;
A computer program for causing the computer to execute.

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