Method and apparatus for manufacturing steel materials

Abstract

To provide a steel material production method which allows a steel material to be subjected to intended heat treatment with reduced burden on a worker.SOLUTION: The steel material production method uses a batch type heat treatment furnace to simultaneously subject a plurality of steel materials to heat treatment and includes the steps of: adding identification marks distinguishing individual steel materials to be subjected to heat treatment, to the steel materials; selecting identification marks of a plurality of steel materials to be subjected to the same heat treatment and collecting them into an instruction and displaying a code on the instruction; reading the code to display the identification marks of the steel materials to be subjected to the same heat treatment, in a display screen and loading the steel materials with the displayed identification marks onto a wagon; reading the identification marks added to the steel materials loaded on the wagon by voice and taking voice data into a worker terminal and confirming coincidence between the voice data and the identification marks by a voice verification function; and causing layout of the steel materials displayed in the display screen to match actual layout.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a method and an apparatus for manufacturing steel materials.

Background Art

[0002] As a technique related to preventing mis-shipment of conventional steel products, for example, Patent Document 1 describes a product verification method in which, when shipping a product, the product number of the target product stored in the in-stock database is compared with the product number marked on the product. At the verification timing, after masking part or all of the product number related to the product displayed on the crane on the screen, the crane operator visually confirms the product number of the product and inputs the confirmed product number by voice or character input. A product verification method is described. And by such a product verification method, while displaying the product number on the database on the crane in-cab screen, when comparing the actual product number with the product number on the database, the displayed product number is masked, so that visual confirmation can be ensured and mis-shipment can be prevented at the time of product shipment.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present invention provides a method and an apparatus for manufacturing steel materials that can more accurately perform intended heat treatment on steel materials while reducing the burden on workers.

Means for Solving the Problems

[0005] The present invention is as follows: (1) to (10). (1) A method for manufacturing steel materials in which a plurality of steel materials are simultaneously heat-treated using a batch-type heat treatment furnace, An identification symbol assigning step of issuing an identification symbol for distinguishing each of the steel materials to be heat-treated and attaching an identification means capable of visually recognizing the identification symbol to each of the steel materials; In order to heat-treat a plurality of the steel materials to be subjected to the same heat treatment in the same batch, select the identification symbols of each of the plurality of the steel materials to be subjected to the same heat treatment, compile them in one instruction sheet, issue a code for distinguishing each of the instruction sheets, and display it on each of the instruction sheets. An instruction sheet creation step; Read the code shown in the instruction sheet, and display on the display screen of the operator terminal the identification symbols of the plurality of the steel materials to be subjected to the same heat treatment in the same batch and the external view of each of those steel materials. A loading step of loading and arranging the steel materials with the identification means attached with the same identification symbol as the displayed identification symbol on a trolley; After activating the voice recognition function and voice verification function of the operator terminal, read out the identification symbol shown on the identification means attached to the plurality of the steel materials loaded on the trolley, and the voice information of the identification symbol generated by the reading is captured by the operator terminal as voice data by the voice recognition function, and the voice verification function is used to confirm that the voice data matches the identification symbol displayed on the display screen of the operator terminal. An identification symbol confirmation step; A layout creation step of matching the layout of the steel materials displayed on the display screen of the operator terminal with the layout of the steel materials on the actual trolley; A recording step of recording and storing as data the information of the identification symbol confirmed by the voice verification function in the identification symbol confirmation step and the information of the layout of the steel materials on the trolley created by the layout creation step; After performing the recording step, load the trolley loaded with the plurality of steel materials into a batch-type heat treatment furnace, and a heat treatment step of heat-treating the steel materials; A method for manufacturing steel materials, comprising: (2) In the loading process, the identification symbol of the steel material and the external view diagram displayed on the display screen of the operator terminal are associated with each other and can be moved simultaneously on the display screen. The manufacturing method of the steel material according to (1) above. (3) Issue shape information including the shape characteristics of the steel material, associate the shape information with the identification symbol, In the loading process, based on the shape information, the operator terminal causes the external view diagram of the shape indicating the characteristics of the steel material to be displayed on the display screen. The manufacturing method of the steel material according to (1) or (2) above. (4) In the loading process, on the display screen of the operator terminal, when loading a plurality of steel materials to be heat-treated in the same batch onto a trolley, a layout plan is displayed. The manufacturing method of the steel material according to any one of (1) to (3) above. (5) In the loading process, in order to load the steel materials onto the trolley in a layout different from the displayed layout plan, an operation of moving the external view diagram of each of the steel materials displayed on the display screen on the display screen to change the layout is included. The manufacturing method of the steel material according to (4) above. (6) A manufacturing apparatus for steel materials that simultaneously heat-treats a plurality of steel materials using a batch-type heat treatment furnace, An identification symbol issuing unit that issues an identification symbol for distinguishing each of the steel materials to be heat-treated, An identification symbol attaching unit that attaches an identification means capable of visually recognizing the identification symbol to each of the steel materials, In order to heat-treat a plurality of steel materials to be heat-treated in the same batch in the same batch, the identification symbols of each of the selected plurality of steel materials to be heat-treated are grouped in one instruction sheet, and a code for distinguishing each of the instruction sheets is issued and displayed on each of the instruction sheets. An instruction sheet creating unit, Based on the information of the code shown in the read instruction sheet, a processing target display unit that causes the identification symbols of a plurality of steel materials to be heat-treated in the same batch and the external view diagrams of each of those steel materials to be displayed on the display screen of the operator terminal. Loading means for loading and arranging the steel materials with the same identification symbols as those displayed on the display screen onto a trolley; The operator terminal has a voice recognition function and a voice verification function. When the identification symbols shown on the identification means attached to the plurality of steel materials loaded on the trolley are read out, the voice recognition function recognizes the voice information of the identification symbols, and the operator terminal captures it as voice data. The voice verification function is an identification symbol verification unit that verifies that the voice data matches the identification symbols displayed on the display screen of the operator terminal; A layout creation unit including a function of matching the layout of the steel materials displayed on the display screen of the operator terminal with the layout of the steel materials on the actual trolley; A recording unit that records and stores, as data, the information of the identification symbols verified by the voice verification function in the identification symbol verification unit and the information of the layout of the steel materials on the trolley created by the layout creation unit; A batch-type heat treatment furnace that loads the trolley loaded with the plurality of steel materials after the processing by the recording unit and performs heat treatment on the steel materials; A steel material manufacturing apparatus having the above. (7) The steel material manufacturing apparatus according to (6) above, wherein in the processing target display unit, the identification symbol of the steel material displayed on the display screen of the operator terminal is associated with the external view, and they can be moved simultaneously on the display screen. (8) Issue shape information including the characteristics of the shape of the steel material, associate the shape information with the identification symbol, The steel material manufacturing apparatus according to (6) or (7) above, wherein in the processing target display unit, based on the shape information, the operator terminal displays an external view of the shape indicating the characteristics of the steel material on the display screen. (9) The steel material manufacturing apparatus according to any one of (6) to (8) above, wherein in the processing target display unit, a layout plan for loading a plurality of steel materials to be subjected to the same heat treatment in the same batch onto a trolley is displayed on the display screen of the operator terminal. (10) In the processing target display unit, in order to stack the steel materials on the carriage in a layout different from the displayed layout plan, the external views of the respective steel materials displayed on the display screen can be moved on the display screen to change the layout. The steel material manufacturing apparatus according to (9) above.

Effect of the Invention

[0006] According to the present invention, it is possible to provide a steel material manufacturing method and a manufacturing apparatus capable of more accurately performing heat treatment intended for steel materials while reducing the burden on workers.

Brief Description of the Drawings

[0007]

Figure 1

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Figure 6

Embodiments for Carrying Out the Invention

[0008] The present invention will be described. The present invention relates to a method for manufacturing steel materials in which a plurality of steel materials are simultaneously heat-treated using a batch-type heat treatment furnace, comprising: an identification symbol assigning step of issuing an identification symbol for distinguishing each of the steel materials to be heat-treated and attaching an identification means capable of visually recognizing the identification symbol to each of the steel materials; a work order creating step of selecting the identification symbols of the plurality of steel materials to be subjected to the same heat treatment, collecting them in one work order, issuing a code for distinguishing each of the work orders, and displaying the code on each of the work orders; a loading step of reading the code shown on the work order, displaying the identification symbols of the plurality of steel materials to be subjected to the same heat treatment in a batch and the external views of each of the steel materials on a display screen of an operator terminal, and loading and arranging the steel materials with the identification means attached with the same identification symbol as the displayed identification symbol on a carriage; an identification symbol confirmation step of activating the voice recognition function and the voice verification function of the operator terminal, reading out the identification symbol shown on the identification means attached to the plurality of steel materials loaded on the carriage, capturing, by the voice recognition function, the voice information of the identification symbol generated by the reading as voice data by the operator terminal, and confirming, by the voice verification function, that the voice data matches the identification symbol displayed on the display screen of the operator terminal; a layout creating step of matching the layout of the steel materials displayed on the display screen of the operator terminal with the layout of the steel materials on the actual carriage; a recording step of recording and storing, as data, the information of the identification symbol confirmed by the voice verification function in the identification symbol confirmation step and the information of the layout of the steel materials on the carriage created in the layout creating step; and a heat treatment step of loading the carriage loaded with the plurality of steel materials into a batch-type heat treatment furnace after the recording step and performing a heat treatment on the steel materials. Such a method for manufacturing steel materials is also referred to as "the manufacturing method of the present invention" hereinafter.

[0009] The present invention also relates to a steel material manufacturing apparatus for simultaneously heat-treating a plurality of steel materials using a batch-type heat treatment furnace, comprising: an identification symbol issuing unit that issues an identification symbol for distinguishing each of the steel materials to be heat-treated; an identification symbol attaching unit that attaches an identification means capable of visually recognizing the identification symbol to each of the steel materials; an instruction sheet creating unit that summarizes the identification symbols of a plurality of the steel materials selected to be heat-treated with the same heat treatment in one instruction sheet, issues a code for distinguishing each of the instruction sheets, and displays the code on each of the instruction sheets; a processing target display unit that causes a display screen of an operator terminal to display the identification symbols of a plurality of the steel materials to be heat-treated with the same heat treatment in the same batch and external views of each of the steel materials based on the information of the code shown in the read instruction sheet; a loading means for loading and arranging the steel materials with the same identification symbol as the identification symbol displayed on the display screen onto a carriage; an identification symbol confirmation unit in which the voice recognition function of the operator terminal has a voice recognition function and a voice verification function, and when the identification symbol shown on the identification means attached to a plurality of the steel materials loaded on the carriage is read out, the voice recognition function recognizes the voice information of the identification symbol, the operator terminal captures it as voice data, and the voice verification function confirms that the voice data matches the identification symbol displayed on the display screen of the operator terminal; a layout creating unit including a function of matching the layout of the steel materials displayed on the display screen of the operator terminal with the layout of the steel materials on the actual carriage; a recording unit that records and stores, as data, the information of the identification symbol confirmed by the voice verification function in the identification symbol confirmation unit and the information of the layout of the steel materials on the carriage created by the layout creating unit; and a batch-type heat treatment furnace that loads the carriage on which a plurality of the steel materials have been loaded after the processing by the recording unit and heat-treats the steel materials. Such a steel material manufacturing apparatus is also referred to as the "manufacturing apparatus of the present invention" hereinafter.

[0010] It is preferable to perform the manufacturing method of the present invention using the manufacturing apparatus of the present invention.

[0011] When simply referred to as "the present invention" hereinafter, it shall mean both the manufacturing apparatus of the present invention and the manufacturing method of the present invention.

[0012] In the present invention, a batch-type heat treatment furnace is used to simultaneously perform heat treatment on a plurality of steel materials.

[0013] <Identification symbol assignment step, identification symbol issuing unit, identification symbol assigning unit> The identification symbol assignment step included in the manufacturing method of the present invention and the identification symbol issuing unit and the identification symbol assigning unit included in the manufacturing apparatus of the present invention will be described.

[0014] In the present invention, separate identification symbols for distinguishing them are issued to all the steel materials to be heat-treated in multiple batches. For example, as shown in FIG. 1, when there are 12 steel materials to be heat-treated in multiple batches, an identification symbol for distinguishing them is issued to each of the 12 steel materials. FIG. 1 is an example in which identification symbols with consecutive numbers from A100 to A111 are issued. As an identification symbol, a several-digit character string in which alphabets and numbers are mixed is exemplified. The identification symbol is not limited to alphabets and numbers, and may be a symbol or a code.

[0015] The identification symbol issuing unit included in the manufacturing apparatus of the present invention issues an identification symbol for distinguishing each of the steel materials to be heat-treated. Here, the issuance of the identification symbol shall mean recording the determined identification symbol as data in a computer. Therefore, the determination of the identification symbol may be performed by a human, or may be determined by a computer according to some rules. The rule for the entity determining the identification symbol to determine non-duplicate identification symbols for each steel material is not particularly limited. For example, consecutive identification symbols may be assigned to each steel material, random identification symbols may be assigned, or the symbols constituting the identification symbol may have some meaning, and the identification symbols determined based on this may be assigned to each steel material.

[0016] After the identification symbol is issued by the identification symbol issuing unit, in the identification symbol attaching unit of the manufacturing apparatus of the present invention, as illustrated in FIG. 2, identification means are attached to each steel material. The identification means is something that can visually recognize the identification symbol, and may be, for example, a stamp, a label, or a plate on which the identification symbol is shown. If it is a stamp, it may be directly attached to the steel material. If the identification means is a metal plate on which the identification symbol is shown, welding this to the surface of the steel material corresponds to attaching the identification means to the steel material.

[0017] The identification symbol attaching step included in the manufacturing method of the present invention is a step of issuing an identification symbol for distinguishing each of the steel materials to be heat-treated, and attaching identification means that can visually recognize the identification symbol to each of the steel materials, and can be performed, for example, by the identification symbol issuing unit and the identification symbol attaching unit of the manufacturing apparatus of the present invention as described above.

[0018] <Instruction sheet creation step, instruction sheet creation unit> The instruction sheet creation step included in the manufacturing method of the present invention and the instruction sheet creation unit of the manufacturing apparatus of the present invention will be described.

[0019] In the instruction sheet creation step included in the manufacturing method of the present invention, in order to heat-treat a plurality of the steel materials to be subjected to the same heat treatment in the same batch, the identification symbols of each of the plurality of steel materials to be subjected to the same heat treatment, such as the heating rate, the holding temperature during heating, and the cooling rate, are selected. The entity that selects is not limited and may be a human, or a computer may select based on some rules. For example, a database in which the heating rate, the holding temperature during heating, the cooling rate, etc. are associated with the identification symbol in advance is created, and based on that database, a human or a computer selects a predetermined number of identification symbols of the steel materials to be subjected to the same heat treatment.

[0020] In the instruction sheet creation process and the instruction sheet creation unit, the identification symbols of each of the plurality of steel materials to be subjected to the same heat treatment selected as described above are grouped together in one instruction sheet 1 as shown in FIG. 3, and a barcode 3 is issued as a code for distinguishing each instruction sheet 1 and displayed on each instruction sheet 1. In the example shown in FIG. 3, as identification symbols indicating steel materials to be subjected to the same heat treatment, A100, A102, A106, and A110 are shown in instruction sheet 1, and barcode 3 is shown in the upper right of instruction sheet 1.

[0021] The instruction sheet may be in paper form, or may be displayed on a display screen of a display device such as a tablet.

[0022] Preferably, one barcode is issued for each instruction sheet. This barcode is preferably displayed within the instruction sheet. The barcode is of a type that can obtain the information shown in the instruction sheet by reading it. Here, the information shown in the instruction sheet includes at least the information of the identification symbol of each steel material. Preferably, the barcode is of a type that can be read by a generally used barcode reading device.

[0023] The instruction sheet creation process included in the manufacturing method of the present invention is preferably performed by, for example, the instruction sheet creation unit of the manufacturing apparatus of the present invention as described above.

[0024] <Loading process, processing target display unit, loading means> The loading process included in the manufacturing method of the present invention, the processing target display unit and the loading means of the manufacturing apparatus of the present invention will be described.

[0025] In the loading process included in the manufacturing method of the present invention, the barcode shown in the instruction sheet is read. The method and means for reading the barcode are not limited. For example, it is preferably read by a generally used barcode reading device.

[0026] In the loading process included in the manufacturing method of the present invention and the processing target display unit of the manufacturing apparatus of the present invention, as described above, based on the information of the barcode shown in the read instruction sheet, for example, as shown in FIG. 4, the identification symbols of the plurality of steel materials to be subjected to the same heat treatment in the same batch and the external views of each of those steel materials are displayed on the display screen 12 of the operator terminal 10. In the example shown in FIG. 4, the operator terminal 10 has a barcode reading unit 14. When the barcode 3 of the instruction sheet 1 is read using this, the identification symbol and the external view are configured to be shown on the display screen 12 based on the read information. The operator terminal is preferably a tablet terminal, and as illustrated in FIG. 4, it is preferable that the identification symbol and the external view are displayed on the display screen thereof.

[0027] Here, the external view of each steel material displayed on the display screen of the operator terminal is preferably a view showing the characteristics of the appearance of the steel material. Further, the external view preferably shows the characteristics of the actual shape of the steel material and can distinguish the shapes of the respective steel materials.

[0028] Also, it is preferable to issue in advance the shape information including the characteristics of the shape of each such steel material and associate the shape information with the identification symbol. For example, when issuing the identification symbol in the identification symbol assignment step included in the manufacturing method of the present invention and the identification symbol issuing unit and the identification symbol assigning unit of the manufacturing apparatus of the present invention, it is preferable to also issue the shape information including the characteristics of the shape of each steel material and associate the shape information with the identification symbol. And in the processing target display unit, based on such shape information, it is preferable to display on the display screen of an operator terminal such as a tablet the external view of the shape showing the characteristics of each steel material. In the example shown in FIG. 4, the external view of the steel material is shown on the display screen 12 of the operator terminal 10, and the identification symbol is shown in the external view. In this way, a state in which the operator or the like can surely recognize the set of the external view and the attached identification symbol on the display screen is a state in which the external view and the identification symbol are associated with each other.

[0029] In the processing target display unit, it is preferable that the external view of the steel material and the identification symbol displayed on the display screen 12 of the operator terminal 10 such as a tablet are associated with each other and can be moved simultaneously on the display screen 12 of the operator terminal 10. For example, in the example shown in FIG. 4, the external view of the steel material is shown on the display screen 12 of the operator terminal 10, and the identification symbol is shown in the external view. Then, when touching and moving the external view of each steel material on the display screen 12, the external view and the identification symbol move together. In addition, in the example shown in FIG. 4, the identification symbol is shown in the external view, but for example, the identification symbol may be shown outside the external view.

[0030] In the loading process or the processing target display unit, it is preferable to display on the display screen of the operator terminal a layout plan when loading a plurality of steel materials to be subjected to the same heat treatment in the same batch onto the carriage. In addition, in order to load the steel materials on the carriage in a layout different from the layout plan thus displayed, it is preferable that the external view of each steel material displayed on the display screen can be moved on the display screen to change the layout. The processing target display unit in such a preferred embodiment plays a role of supporting loading and arranging on the carriage the steel materials provided with the identification means of the same identification symbol as the identification symbol displayed on the display screen in the loading process and the loading means described below.

[0031] In the loading process in the manufacturing method of the present invention and the loading means in the manufacturing apparatus of the present invention, for example, as shown in FIG. 4, the steel materials provided with the identification means of the same identification symbol as the identification symbol displayed on the display screen 12 of the operator terminal 10 are loaded and arranged on the carriage 20 as illustrated in FIG. 5. When loading a plurality of steel materials on the carriage 20, it may be necessary to consider various circumstances and devise their arrangements. Therefore, it is preferable to load them so as to achieve an optimal arrangement based on the experience of the operator. As described above, when the display unit for the object to be processed in the preferred embodiment shows a layout plan, it can be referred to.

[0032] <Identification symbol confirmation step, identification symbol confirmation unit> The identification symbol confirmation step included in the manufacturing method of the present invention and the identification symbol confirmation unit included in the manufacturing apparatus of the present invention will be described.

[0033] In the identification symbol confirmation step included in the manufacturing method of the present invention, for example, after activating the voice recognition function and voice verification function of the operator terminal 10 as shown in FIG. 4, as shown in FIG. 5, the identification symbols shown on the identification means attached to the plurality of steel materials loaded on the carriage 20 are read out. The person who reads out is usually the operator who loaded the steel material on the carriage 20, but another operator may read it out.

[0034] When the identification symbol is read out in this way, the voice recognition function captures the voice information of the identification symbol generated by the reading as voice data into the operator terminal. The captured voice data may be stored in the operator terminal, or may be stored in another data storage device connected to the operator terminal by wire or wirelessly. Then, the voice verification function confirms that the captured voice data matches the identification symbol displayed on the display screen 12 of the operator terminal 10. And when they do not match, a means for notifying this to the operator or the like is activated. For example, when they do not match, the operator terminal 10 emits a sound, or an alert notifying this is displayed on the display screen 12. Of course, even when they match, it is preferable to notify this to the operator or the like.

[0035] Note that the operator terminal used in the identification symbol confirmation step and the operator terminal used in the above-described loading step may be separate bodies.

[0036] <Layout creation step, layout creation unit> The layout creation step included in the manufacturing method of the present invention and the layout creation unit included in the manufacturing apparatus of the present invention will be described.

[0037] Note that the layout creation process may be performed before the above-described identification symbol confirmation process. That is, after matching the layout of the steel materials displayed on the display screen of the operator's terminal with the layout of the steel materials on the actual trolley, the identification symbols shown on the identification means attached to the plurality of steel materials loaded on the trolley in the identification symbol confirmation process are read out, and it may be confirmed that they match the identification symbols displayed on the display screen of the operator's terminal. Also, the layout creation process may be performed during the identification symbol confirmation process.

[0038] In the layout creation process included in the manufacturing method of the present invention, for example, the layout of the steel materials displayed on the display screen 12 of the operator's terminal 10 shown in FIG. 4 is matched with the layout of the steel materials on the actual trolley 20 shown in FIG. 5. For example, in the example shown in FIG. 4, an external view of the steel material is shown on the display screen 12 of the operator's terminal 10, and since the external view of the steel material can be touched and moved on the display screen 12, the external view of the steel material is touched and moved on the display screen 12 so as to be the same as the layout of the steel materials on the actual trolley 20 shown in FIG. 5, and the arrangement of the steel materials on the display screen 12 is made as shown in FIG. 6, for example.

[0039] Here, it is preferable that the operator or the like can change the external view of the steel material on the display screen 12 of the operator's terminal 10 as needed.

[0040] As described above, the layout creation unit included in the manufacturing apparatus of the present invention includes a function of matching the layout of the steel materials displayed on the display screen 12 of the operator's terminal 10 with the layout of the steel materials on the actual trolley. For example, in the example shown in FIG. 4, an external view of a steel material is shown on the display screen 12 of the operator terminal 10, and an identification symbol is shown in the external view. When the external view of the steel material is touched and moved on the display screen 12, the identification symbol also moves along with the movement of the external view. Therefore, the external views of the respective steel materials (and the attached identification symbols) displayed on the display screen 12 of the operator terminal 10 can be moved on the display screen 12 and made to match the layout of the steel materials on the actual cart as shown in FIG. 6.

[0041] <Recording process, recording unit> The recording process included in the manufacturing method of the present invention and the recording unit included in the manufacturing apparatus of the present invention will be described.

[0042] In the present invention, the information of the identification symbol confirmed by the voice verification function in the identification symbol confirmation process and the information of the layout of the steel materials on the cart created by the layout creation process are recorded and stored as data. The information of the identification symbol and the layout information can be recorded, for example, on a conventionally known recording medium.

[0043] <Heat treatment process, heat treatment furnace> The heat treatment process included in the manufacturing method of the present invention and the heat treatment furnace included in the manufacturing apparatus of the present invention will be described. In the heat treatment process included in the manufacturing method of the present invention, after performing the recording process, the cart loaded with a plurality of the steel materials is loaded into a batch-type heat treatment furnace, and the steel materials are heat-treated. In the heat treatment furnace included in the manufacturing apparatus of the present invention, the cart loaded with a plurality of the steel materials after the processing by the recording unit is loaded, and the steel materials are heat-treated.

[0044] The heat treatment furnace used here can be adjusted to any heating rate, heating holding temperature, and cooling rate, and is not particularly limited as long as it is a batch-type heat treatment furnace that can load a cart as shown in FIG. 5 and heat-treat the steel materials on the cart. For example, a conventionally known heat treatment furnace can be used.

[0045] The steel material after heat treatment is at a high temperature, and it is difficult to distinguish the identification symbol attached to it. However, in the manufacturing method and manufacturing apparatus of the present invention, for example, by checking the display screen, the identification symbol of the high-temperature steel material on the carriage can be recognized more accurately. Since there is no need to approach the high-temperature steel material, the burden on the operator is reduced. Also, since the identification symbol can be accurately recognized, as a result, the intended heat treatment can be applied to the steel material more accurately.

Explanation of Signs

[0046] 1 Instruction 3 Barcode 10 Operator terminal 12 Display screen 14 Barcode reading unit 20 Carriage

Claims

1. A method for manufacturing steel materials in which a plurality of steel materials are simultaneously heat-treated using a batch-type heat treatment furnace, comprising: an identification symbol assigning step of issuing an identification symbol for distinguishing each of the steel materials to be heat-treated and attaching an identification means capable of visually recognizing the identification symbol to each of the steel materials; an instruction sheet creating step of selecting the identification symbols of the plurality of steel materials to be subjected to the same heat treatment, compiling them in one instruction sheet, issuing a code for distinguishing each of the instruction sheets, and displaying the code on each of the instruction sheets; a loading step of reading the code shown in the instruction sheet, displaying the identification symbols of the plurality of steel materials to be subjected to the same heat treatment in a batch and the external views of each of the steel materials on a display screen of an operator terminal, and loading and arranging the steel materials with the identification means having the same identification symbol as the displayed identification symbol on a carriage; an identification symbol confirmation step of activating the voice recognition function and the voice verification function of the operator terminal, reading out the identification symbol shown on the identification means attached to the plurality of steel materials loaded on the carriage, capturing the voice information of the identification symbol generated by the reading as voice data by the voice recognition function by the operator terminal, and confirming by the voice verification function that the voice data matches the identification symbol displayed on the display screen of the operator terminal; a layout creation step of matching the layout of the steel materials displayed on the display screen of the operator terminal with the layout of the steel materials on the actual carriage; a recording step of recording and storing, as data, the information of the identification symbol confirmed by the voice verification function in the identification symbol confirmation step and the information of the layout of the steel materials on the carriage created by the layout creation step; a heat treatment step of loading the carriage loaded with the plurality of steel materials into a batch-type heat treatment furnace after performing the recording step and subjecting the steel materials to heat treatment; A method for manufacturing steel materials, comprising the above steps.

2. The method for manufacturing steel materials according to claim 1, wherein in the loading step, the identification symbol of the steel material displayed on the display screen of the operator terminal is associated with the external view, and they can be moved simultaneously on the display screen.

3. issuing shape information including the shape characteristics of the steel material, and associating the shape information with the identification symbol. The method for manufacturing a steel material according to claim 1 or 2, wherein in the loading step, based on the shape information, the external view of the shape indicating the characteristics of the steel material is displayed on the display screen of the operator terminal.

4. The method for manufacturing a steel material according to any one of claims 1 to 3, wherein in the loading step, a layout plan for loading a plurality of the steel materials to be subjected to the same heat treatment in the same batch onto a carriage is displayed on the display screen of the operator terminal.

5. The method for manufacturing a steel material according to claim 4, including an operation of moving the external views of the respective steel materials displayed on the display screen on the display screen to change the layout in order to load the steel materials onto the carriage in a layout different from the displayed layout plan.

6. A manufacturing apparatus for steel materials that simultaneously performs heat treatment on a plurality of steel materials using a batch-type heat treatment furnace, an identification symbol issuing unit that issues an identification symbol for distinguishing each of the steel materials to be heat-treated, an identification symbol attaching unit that attaches an identification means capable of visually recognizing the identification symbol to each of the steel materials, an instruction sheet creating unit that summarizes the identification symbols of a plurality of the steel materials to be subjected to the same heat treatment selected for heat-treating the plurality of steel materials to be subjected to the same heat treatment in the same batch in one instruction sheet, issues a code for distinguishing each of the instruction sheets, and displays the code on each of the instruction sheets, a processing target display unit that displays the identification symbols of a plurality of the steel materials to be subjected to the same heat treatment in the same batch and the external views of each of those steel materials on the display screen of the operator terminal based on the information of the code shown in the read instruction sheet, a loading unit for loading and arranging the steel materials with the identification means having the same identification symbol as the identification symbol displayed on the display screen onto a carriage, the operator terminal has a voice recognition function and a voice verification function, and when the identification symbol shown on the identification means attached to a plurality of the steel materials loaded on the carriage is read out, the voice recognition function recognizes the voice information of the identification symbol, the operator terminal captures it as voice data, and the voice verification function confirms that the voice data matches the identification symbol displayed on the display screen of the operator terminal. A layout creation unit including a function of matching the layout of the steel materials displayed on the display screen of the operator terminal with the layout of the steel materials on the actual cart; A recording unit that records and stores, as data, the information of the identification symbol confirmed by the voice verification function in the identification symbol confirmation unit and the information of the layout of the steel materials on the cart created by the layout creation unit; A batch-type heat treatment furnace that loads the cart loaded with a plurality of the steel materials after the processing by the recording unit and performs heat treatment on the steel materials; A steel material manufacturing apparatus having the above.

7. The steel material manufacturing apparatus according to claim 6, wherein in the processing target display unit, the identification symbol of the steel material displayed on the display screen of the operator terminal is associated with the external view, and they can be moved simultaneously on the display screen.

8. Issuing shape information including the characteristics of the shape of the steel material, and associating the shape information with the identification symbol; The steel material manufacturing apparatus according to claim 6 or 7, wherein in the processing target display unit, based on the shape information, an external view of a shape showing the characteristics of the steel material is displayed on the display screen of the operator terminal.

9. The steel material manufacturing apparatus according to any one of claims 6 to 8, wherein in the processing target display unit, a layout plan for loading a plurality of the steel materials to be subjected to the same heat treatment in the same batch onto the cart is displayed on the display screen of the operator terminal.

10. The steel material manufacturing apparatus according to claim 9, wherein in the processing target display unit, in order to load the steel materials onto the cart in a layout different from the displayed layout plan, the external views of the respective steel materials displayed on the display screen can be moved on the display screen to change the layout.

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