JP2020157322A - Display control unit, program and display control method - Google Patents

Abstract

To perform display capable of easily calculating a suitable cutting position by an operator.SOLUTION: A display control unit (21) comprises: a crop position calculation part (22) calculating the start position and end position of a crop in a slab present at the inside of a continuous casting machine (10) using a distance from a tip on a side in which cutting in the slab present at the inside of the continuous casting machine (10) is performed; and a display performance part (23) displaying the start position and end position of the crop calculated by the clop position calculation part (22) in a display device (20).SELECTED DRAWING: Figure 1

Description

The present invention relates to a display control device that controls the display of information to an operator who controls the cutting of cast slabs in continuous casting.

In continuous casting, it is necessary to produce slabs within a predetermined length range after cutting scraps called crops, which are parts of the cast slabs that have abnormal quality. Conventionally, for example, as disclosed in Patent Document 1, cutting of slabs is usually controlled by an automatic calculation by a process computer unless there are special circumstances.

Japanese Unexamined Patent Publication No. 11-285798 (published on October 19, 1999)

However, in the slab cutting control by the process computer, when an unplanned crop occurs or a large amount of crops occur, the calculation cannot be performed properly, and the appropriate cutting position cannot be calculated. In such cases, the operator controls the cutting of the slab.

The operator confirms the display showing the information of the slab in the continuous casting machine, and controls the cutting of the slab based on the information. However, in the conventional display, the position of the crop is displayed using the total casting length since the start of casting. Therefore, it takes time for the operator to calculate an appropriate cutting position, and there is a problem that appropriate cutting control cannot be performed.

One aspect of the present invention is to realize a display control device and a display control method for controlling display so that an operator can easily calculate an appropriate cutting position.

In order to solve the above problems, the display control device according to one aspect of the present invention is a display control device that controls the display of the display device of the continuous casting machine, and the display device controls the cutting of the slab. The control information related to the above is displayed, and the start position and the end position of the crop in the slab existing inside the continuous casting machine are set to the side where the cutting is performed in the slab existing inside the continuous casting machine. A crop position calculation unit that calculates using the distance from the tip, and a display execution unit that displays the start position and end position of the crop calculated by the crop position calculation unit on the display device as the control information. Be prepared.

Further, in the display control device according to one aspect of the present invention, the display device may be configured to display the length of the crop in the casting direction.

Further, in the display control device according to one aspect of the present invention, the display device may be configured to display the cause of the crop.

Further, in the display control device according to one aspect of the present invention, an image showing the continuous casting machine may be displayed on the display device, and the position of the crop may be displayed in the image.

The program according to one aspect of the present invention causes the computer to function as each part in the above-mentioned display control device.

In order to solve the above problems, the display control device according to one aspect of the present invention is a display control method for controlling the display of the display device connected to the control device of the continuous casting machine, and is a display control method of the continuous casting machine. The crop position calculation step of calculating the start position and the end position of the crop in the slab existing inside with reference to the tip of the slab on the side where the cutting is performed, and the crop position calculation step calculated in the crop position calculation step. The display execution step of displaying the start position and the end position of the crop on the display device is included.

According to one aspect of the invention, the operator can easily calculate the appropriate cutting position.

It is a block diagram of the continuous casting equipment which concerns on Embodiment 1 of this invention. It is a figure which shows an example of the image displayed by the display device provided in the said continuous casting facility. It is an enlarged view of one column of the display area displayed in the said image. It is a figure which shows the operation plan of the continuous casting which concerns on one Example of this invention, (b) is the figure which shows the planned cutting position calculated by the process computer. (A) is a diagram showing a slab on which an unplanned crop according to an embodiment of the present invention is formed, and (b) is a casting when the slab is cut at a position calculated by a process computer. It is a figure which shows the piece, (c) is a figure which shows the cutting position calculated by the operator when the continuous casting equipment of this invention is used.

[Embodiment 1]
Hereinafter, the continuous casting facility 1 according to the embodiment of the present invention will be described in detail.

FIG. 1 is a block diagram of the continuous casting facility 1 in the present embodiment. The continuous casting facility 1 in the present embodiment includes a continuous casting machine 10, a display device 20, and a process computer 30.

The continuous casting machine 10 includes a ladle 11, a tundish 12, a mold 13, and a cutting machine 14. In the continuous casting machine 10, the molten steel contained in the ladle 11 is cooled and cast between rolls (not shown) via the tundish 12 and the mold 13 to form a slab. Then, the formed slab is cut by the cutting machine 14 to obtain a slab having a desired length.

Cutting of slabs by the cutting machine 14 is usually controlled by the process computer 30 unless there are special circumstances. However, in continuous casting, unplanned crops may form on the slab. In such a case, the operator O controls the cutting of the slab.

The process computer 30 is a control device that controls continuous casting by the continuous casting machine 10.

The display device 20 is a display device that displays control information related to cutting control of the slab to the operator O who controls the cutting of the cast slab. The display device 20 is connected to the process computer 30. The operator O determines the cutting position of the slab based on the control information displayed on the display device 20. The display device 20 includes a display control unit 21 (display control device).

The display control unit 21 controls the image displayed by the display device 20. The display control unit 21 includes a crop position calculation unit 22 and a display execution unit 23.

The crop position calculation unit 22 calculates the crop position in the slab based on the information from the continuous casting machine 10 (the crop position calculation step as one step of the display control method). Here, the tundish 12 is provided with measuring devices such as a tundish weigh scale and a sliding nozzle opening degree control device. Further, the mold 13 is provided with measuring equipment such as a molten metal level meter, a mold width meter, and a slab surface thermometer. The crop position calculation unit 22 acquires data from each of the above-mentioned devices provided in the tundish 12 and the mold 13 online. Then, the crop position calculation unit 22 calculates the range in which the crop occurs in the total casting length after the start of continuous casting based on the acquired data.

Similarly to the crop position calculation unit 22, the process computer 30 also has a total casting length since the start of continuous casting based on the data from each of the above-mentioned devices provided in the tundish 12 and the mold 13. In, the range in which the crop occurred is calculated. Then, the process computer 30 controls the cutting of the slab based on the calculation result.

Further, the crop position calculation unit 22 acquires the cutting information of the cutting machine 14, and calculates the cumulative length of the slabs cut after starting continuous casting using the information. Then, the crop position calculation unit 22 subtracts the "cumulative length of the cut slabs" from the "cropping generation range in the total casting length since the start of continuous casting", so that the continuous casting machine 10 Calculate the range of cropping at the distance from the tip of the slab inside. In other words, the crop position calculation unit 22 sets the start position and the end position of the crop in the slab existing inside the continuous casting machine 10 with reference to the tip of the slab on the side where the cutting machine 14 cuts. calculate.

The display execution unit 23 starts cropping from the crop generation range (that is, the tip on the side where the slab is cut) at the distance from the tip of the slab in the continuous casting machine 10 calculated by the crop position calculation unit 22. The position and the end position) are displayed on the display device 20 as the control information (display execution step as one step of the display control method).

FIG. 2 is a diagram showing an example of an image I displayed by the display device 20. As shown in FIG. 2, the image I displays a display area A for displaying crops and information on crop positions in characters (text), and a display area B for displaying information on crop positions in images.
In the display area A, one column is displayed for each of the crops (displayed as scraps in FIG. 2). In FIG. 2, columns for four crops are displayed.

FIG. 3 is an enlarged view of one column of the display area A. Each column displayed in the display area A comprises displays A1 to A5.

The display A1 displays the crop number.

The display A2 displays the region where the crop is formed (the start position and the end position of the crop) by using the total casting length since the start of continuous casting.

The display A3 displays the region where the crop is formed (the start position and the end position of the crop) by using the distance from the tip of the slab in the continuous casting machine 10.

The display A4 displays a code indicating the cause (reason) of the cropping. A correspondence table is separately prepared for the code, and the operator O can confirm the cause of cropping by associating the code with the correspondence table.

Display A5 indicates the length of the crop in the casting direction. As a result, the amount of calculation of the operator O can be further reduced.

Further, in the display area A, a display A4 for displaying the cause of cropping is displayed. As a result, the operator O can grasp the cause of the cropping, and thus can determine a more preferable position when determining the cutting position of the slab. The cause of cropping is identified based on the data from each of the above-mentioned devices provided in the tundish 12 and the mold 13 by the process computer 30.

As shown in FIG. 2, crop information is displayed in the display area B using a diagram. Specifically, an image B1 showing the continuous casting machine 10 is displayed in the display area B. Image B1 is colored to distinguish the region (indicated by reference numeral B5) where the molten steel or slab is located inside the continuous casting machine 10 from the other regions. That is, the colored area indicates the molten steel or slab inside the continuous casting machine 10.

Further, in the display area B, an image B2 showing the position of the crop is displayed.

Further, in the display area B, an image B3 showing a region in which the width of the slab is changed (a region in which the width is narrowed) is displayed. Further, in the display area B, a line B4 indicating a cutting position calculated by the process computer 30 is displayed.

Depending on the continuous casting machine, for example, a completely vertical continuous casting machine, the length of the slab to be cut may be limited. Further, in order to produce high-quality slabs, the area to be cropped increases. In such a case, the automatic calculation by the process computer 30 cannot calculate an appropriate cutting position, and the operator controls the cutting position. However, in the conventional method, there is a problem that it takes time for the operator to calculate an appropriate cutting position, and it is not possible to perform appropriate cutting control.

On the other hand, in the continuous casting in the present embodiment, the display control unit 21 controls the display device 20 to display the position of the crop using the distance from the tip of the slab in the continuous casting machine 10 (that is,). , Display A3 is displayed). As a result, the operator O does not have to calculate the position of the crop in the continuous casting machine 10. As a result, the amount of calculation for setting the cutting position of the slab can be reduced, so that the operator O can easily calculate the appropriate cutting position. As a result, in the past, there were slabs that could not be calculated in time and were scrapped, but it is possible to prevent the slabs from being scrapped. As a result, the manufacturing cost can be reduced. In addition, since the cutting position can be set with a smaller amount of calculation than before, it is possible to prevent equipment troubles due to calculation errors and the like.

Further, on the display screen I, a display A5 indicating the length of the crop is displayed. As a result, the amount of calculation of the operator O can be further reduced.

Further, on the display screen I, an image B2 showing the position of the crop is displayed in the display area B. As a result, the operator O can intuitively grasp the position of the crop (the start position S and the end position E of the crop shown in FIG. 2) inside the continuous casting machine 10.

In one aspect of the present invention, the display control unit 21 displays characters (that is, the display shown in FIG. 3) indicating the position of the crop using the distance from the tip of the slab in the continuous casting machine 10 on the display screen I. The letters A3) and the length of the crop in the casting direction (ie, the indication A5 shown in FIG. 3) may be a more prominent color (eg, yellow) than the other letters. This makes it easier for the operator O to recognize the position and length of the crop. Further, the image B2 showing the position of the crop in the display area B may also have the same color. Further, when the color is changed to yellow, the burden on the eyes of the operator O can be reduced.

Next, an example using the continuous casting facility 1 of the present invention will be described.

FIG. 4A is a diagram showing an operation plan for continuous casting, and FIG. 4B is a diagram showing a planned cutting position calculated by the process computer 30.

In this embodiment, it is assumed that high quality slabs (hereinafter referred to as good slabs) must be continuously produced as shards having a thickness of at least 5000 mm and 8900 mm or less.

As shown in FIG. 4A, in this embodiment, an example of casting a slab of 22720 mm will be described. Further, it is assumed that a crop as a seam is planned to be formed at 1900 mm on the side of the slab near the molten metal surface (upper side in FIG. 4). As shown in FIG. 4B, the process computer 30 has a 7130 mm slab as the first slab, a 7130 mm slab as the second slab, and an 8460 mm slab as the third slab. The cutting position was determined so as to manufacture.

FIG. 5A is a diagram showing a slab in which an unplanned crop is formed, and FIG. 5B is a diagram showing a slab when the slab is cut at a position calculated by the process computer 30. (C) is a diagram showing a cutting position calculated by the operator O when the continuous casting equipment of the present invention is used.

As shown in FIG. 5A, it is assumed that an unplanned crop is generated (formed) in the middle of the cast piece. In such a case, the operator O performs disconnection control. However, in the conventional continuous casting equipment, the position and length of the crop are not displayed on the display screen for the operator O. Therefore, it takes time for the operator O to calculate an appropriate cutting position, and it may not be possible to calculate an appropriate cutting position. In this case, the slab is cut at the position calculated by the process computer 30. As a result, as shown in FIG. 5B, the length of the good slab in the second slab is 4230 mm, which is less than 5000 mm. Therefore, the second slab is scrapped.

On the other hand, in the continuous casting equipment of the present invention, the position of the crop is displayed on the display device 20 using the distance from the tip of the slab in the continuous casting machine 10, and the length of the crop is also displayed. Has been done. As a result, the operator can instantly grasp the state of the slab inside the continuous casting machine 10. Therefore, the cutting position can be adjusted so as not to generate more waste than necessary. As a result, as shown in FIG. 5C, all three slabs to be cast can be made into good slabs.

[Example of realization by software]
The control block of the display device 20 (particularly, the display control unit 21 and the crop position calculation unit 22) may be realized by a logic circuit (hardware) formed in an integrated circuit (IC chip) or the like, or by software. You may.

In the latter case, the display device 20 includes a computer that executes instructions of a program that is software that realizes each function. The computer includes, for example, one or more processors and a computer-readable recording medium that stores the program. Then, in the computer, the processor reads the program from the recording medium and executes it, thereby achieving the object of the present invention. As the processor, for example, a CPU (Central Processing Unit) can be used. As the recording medium, in addition to a “non-temporary tangible medium” such as a ROM (Read Only Memory), a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, or the like can be used. Further, a RAM (Random Access Memory) for expanding the above program may be further provided. Further, the program may be supplied to the computer via an arbitrary transmission medium (communication network, broadcast wave, etc.) capable of transmitting the program. It should be noted that one aspect of the present invention can also be realized in the form of a data signal embedded in a carrier wave, in which the above program is embodied by electronic transmission.

The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims, and the embodiments obtained by appropriately combining the technical means disclosed in the different embodiments. Is also included in the technical scope of the present invention.

10 Continuous casting machine 20 Display device 21 Display control unit (display control device)
22 Crop position calculation unit 23 Display execution unit O Operator

Claims (6)

It is a display control device that controls the display of the display device connected to the control device of the continuous casting machine.
A crop position calculation unit that calculates the start position and end position of cropping in a slab existing inside the continuous casting machine with reference to the tip on the side where cutting is performed in the slab.
A display control device including a display execution unit for displaying the start position and end position of the crop calculated by the crop position calculation unit on the display device. The display control device according to claim 1, wherein the length of the crop in the casting direction is displayed on the display device. The display control device according to claim 1 or 2, wherein the cause of occurrence of the crop specified by the control device is displayed on the display device. An image showing the continuous casting machine is displayed on the display device.
The display control device according to any one of claims 1 to 3, wherein the position of the crop is displayed in the image. A program for causing a computer to function as each part in the display control device according to any one of claims 1 to 4. It is a display control method that controls the display of the display device connected to the control device of the continuous casting machine.
A crop position calculation step of calculating the start position and end position of cropping in a slab existing inside the continuous casting machine with reference to the tip on the side where cutting is performed in the slab.
A display control method comprising a display execution step of displaying the start position and end position of the crop calculated in the crop position calculation step on the display device.

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