JPH07290205A - Instrument for measuring interval between dam block in continuous caster - Google Patents

Abstract

PURPOSE:To prevent the development of a gap between a dam block and molten metal, to improve the cooling efficiency and to simplify devices, such as secondary cooling device, by setting an interval between the dam blocks to a interval considering the solidified shrinkage of the molten metal. CONSTITUTION:The interval measuring instrument 30 is inserted into a mold space and carried together with the dam blocks. The width of a main block 1 constituting the interval measuring instrument 30 is variable with an elastic body 2 during carrying. An interval sensor 3 arranged to the instrument 30 detects the interval between the dam blocks. A position sensor 4 detects the present position in the mold space. Each measured value detected with the interval sensor 3 and the position sensor 4 in inputted into a treating device 5 and treated, and the treated data are stored in a storage device 6. The data stored in this storage device 6 are optionally taken out and outputted in the form of the interval data to the position data and used as the check to the dam block interval already adjusted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for measuring the distance between dam blocks in a continuous casting machine capable of accurately measuring the distance between dam blocks.

[0002]

2. Description of the Related Art FIG. 5 is a schematic view showing a continuous rod rolling apparatus of the conti rod system using a twin belt casting machine. To explain this in the case of a copper wire, the copper melted in the shaft furnace 21 is poured into the tundish 23 through the holding furnace 22 and supplied from the tundish 23 to the twin belt casting machine 24 to be cast. Next cooler 25
It is hot-rolled through a multi-stage rolling mill 26, passed through a cleaning device 27, and taken up by a winding machine 28 as a predetermined copper wire.

The twin belt casting machine 24 is mainly composed of upper and lower drive belts 11 and 12 and left and right dam blocks 13 and 13, as shown in the enlarged view of FIG. From the tundish 23 to the molten copper 15 in the mold space surrounded by these
Is supplied and forcedly cooled, the vertical drive belt 11,
The cast bar is linearly manufactured by continuously cooling and solidifying by 12.

[0004]

By the way, when the upper and lower drive belts 11 and 12 continuously cool and solidify,
Since the molten copper 15 solidifies and shrinks, a gap is created between the molten copper 15 and the dam block 13. That is, the width of the outlet cast bar 16 of the casting machine is 0. Reduce by a few mm. Since this reduction width is delicate and is strictly performed, the spacing between the left and right dam blocks 13 is adjusted while the upper drive belt 11 is raised, and after the adjustment, the upper drive belt 11 is lowered. However, by lowering the upper drive belt 11, the dam block 13 is precisely adjusted in terms of the bending angle.
There is a possibility that a gap may occur between them.

If the distance between the dam blocks is set to be deviated from the distance in consideration of the solidification shrinkage of the molten metal, a gap is generated between the dam block and the molten metal, and this gap lowers the cooling efficiency, and the secondary cooler 25 It is necessary to add equipment such as. Therefore, it is required to measure the distance between the dam blocks while lowering the upper drive belt.

An object of the present invention is to solve the above-mentioned drawbacks of the prior art and to measure the distance between dam blocks in a continuous casting machine capable of accurately measuring the distance between dam blocks in a state close to actual operation. To provide a device.

[0007]

A device for measuring a space between dam blocks in a continuous casting machine according to the present invention drives a vertical drive belt by inserting it into a mold space surrounded by a drive belt on the upper and lower sides of the dam block. The main body block is conveyed together with the left and right dam blocks by the elastic body, the elastic body that applies the pressure to the left and right dam blocks by varying the width of the main body block in order to simulate the pressure on the left and right dam blocks by the molten metal, The distance sensor that detects the distance between the dam blocks under pressure, the position sensor that detects the position of the main body block in the mold space, and the distance between the dam blocks detected by the distance sensor and the position sensor and the measured value of the current position The processing means for processing and the storage means for storing the processed interval data and position data are provided.

[0008]

The gap measuring device between dam blocks is constructed by attaching dam blocks to the left and right of the lower drive belt, lowering the upper drive belt, and inserting the dam block into the adjusted mold space surrounded by these.

When the vertical drive belt is driven, the distance measuring device inserted in the mold space is sandwiched between the vertical drive belt and the dam block and conveyed together with the dam block. During transportation, the spacing sensor detects the spacing between dam blocks sandwiching the spacing measuring device. The position sensor detects the current position at the time of detection each time the interval sensor detects the interval between dam blocks.

The main body block constituting the interval measuring device is
The left and right widths are variable and the elastic bodies press the left and right dam blocks, so it is equivalent to actually pressing the dam blocks with molten metal. Therefore, the measured value between the dam blocks detected by the distance sensor is an accurate value close to the actual distance.

Each measurement value detected by the distance sensor and the position sensor is input to the processing device and processed, and the processed data is stored in the storage means. The data stored in this storage means is arbitrarily taken out and is output in the form of interval data with respect to the position data to contribute to checking the adjusted dam block interval.

Thus, the check of the dam block interval can be accurately performed in the adjusted mold space.
It is possible to set the interval between the dam blocks to an interval that takes into consideration the actual solidification shrinkage of the molten metal, prevent the occurrence of a gap between the dam blocks and the molten metal, and increase the cooling efficiency of the molten metal.

[0013]

EXAMPLES Examples of the present invention will be described below. FIG. 1 shows a plan view and a side view of a device for measuring a gap between dam blocks in a copper continuous casting machine according to this embodiment. This device is constructed in a portable size and includes a main body block 1, an elastic body 2,
The distance sensor 3, the position sensor 4, the processing device 5, and the storage device 6 are mainly configured.

The main body block 1 is composed of a pair of block pieces 8 and 9 which are arranged parallel to each other so as to face each other, and are separated so that the width of the left and right can be varied. The main body block 1 is inserted into a mold space surrounded by upper and lower drive belts and surrounded by dam blocks on the right and left sides, and is conveyed integrally with the dam blocks by driving the vertical drive belts. The overall shape of the main body block 1 has a rectangular cross-section with the same contour as a copper product cast by a continuous casting machine. Correspondingly, the pair of block pieces 8 and 9 also have a rectangular cross-section. ing. The pair of block pieces 8 and 9 may be made of any material having a high hardness, but may be made of stainless steel or the same graphite as that of the dam block.

The elastic body 2 connects the pair of block pieces 8 and 9 in the middle so that the left and right widths of the distance measuring device can be varied. The elastic body 2 applies an outward pressing force to the left and right dam blocks, and simulates the pressing force applied to the left and right dam blocks by the molten copper actually supplied to the mold space. Therefore, the resilience is set to a value close to the actual value. The elastic body 2 is made of, for example, a spring or rubber. A leaf spring or a spiral spring is preferable as the spring. Examples of the rubber include natural rubber and synthetic rubber.

The spacing sensor 3 detects the spacing between dam blocks. Specifically, it is composed of a non-contact photoelectric sensor. The inner wall of the dam block, which projects from the tip of one block piece 8 and contacts the other block piece 9, is irradiated with light,
By detecting the reflected light, the distance between the dam blocks can be accurately detected.

The position sensor 4 detects the current position of the main body block 1 being conveyed in the mold space. Specifically, it is composed of a non-contact infrared sensor. It is built in one block piece 8, emits infrared rays in a direction opposite to the traveling direction of the main body block 1, hits a reference surface (not shown) installed on the extension of the conveyance path outside the mold space, and the reflected light from this Is detected, the current position of the main body block 1 is detected. Unlike the case of the distance sensor 3, infrared rays are used to prevent erroneous detection because the outside of the mold space is bright.

The processing device 5 and the storage device 6 are built in one block piece 8. The processing device 5 processes the interval between the dam blocks detected by the interval sensor 3 and the position sensor 4, and the measured value of the current position. Interval sensor 3
The measured values of the distance between dam blocks and the current position detected by the position sensor 4 are input to the processing device 5 and digitally processed, and after processing, stored in the storage device 6 as distance data between dam blocks and current position data. Remembered.
These data stored in the storage device 6 are connected to the output device 51 to the processing device 5 as shown in FIG. It is possible to output. The processing device 5 can be configured by a CPU, and the storage device can be configured by a RAM. The output device is a printer, a display, or the like.

A power source 7 necessary for driving the apparatus is built in one block piece 8. The block circuit configuration of the sensor, CPU, and RAM described above is shown in FIG. 2. The interval sensor 3 and the position sensor 4 are connected to the processing device 5 via the A / D converter 52.

Now, how to use this apparatus will be described with reference to FIG. 3 showing a twin belt casting machine. 3A is an enlarged cross-sectional view of a main part, FIG. 3B is a plan view, and FIG. 3C is a front cross-sectional view.
The twin belt casting machine 24 includes a pair of pulleys 31, 31.
And the upper and lower endless drive belts 11 and 12 suspended between the upper endless drive belts 11 and 12 and the upper and lower endless drive belts 11 and 12 suspended between the upper and lower endless drive belts 11 and 12.
Left and right endless dam blocks 1 transported by driving 2
It is composed of 3 and 13. Although not shown, the upper and lower drive belts 11 and 12 are forcibly cooled. The mutual positions of the upper and lower endless drive belts 11 and 12 and the left and right endless dam blocks 13 and 13 are adjusted in advance,
The gap measuring device 30 described above is inserted into the inlet of the casting portion of the mold space 33 surrounded by the adjusted components. As mentioned above, the width w2 of the casting cast bar 16 of the casting machine is smaller than the width w1 of the casting cast bar 17 of the inlet.

When the upper and lower endless drive belts 11 and 12 are driven, the space measuring device 30 inserted in the mold space 33 is
Drive belts 11 and 12 on the top and bottom, dam block 1 on the left and right
It is sandwiched between 3 and 13 and is transported together with the dam blocks 13 and 13. During the transportation, the spacing sensor 3 attached to the tip of the spacing measuring device 30 detects the spacing between the dam blocks 13 in the transportation process by a photoelectric sensor in a non-contact manner. Further, the position sensor 4 detects the current position at the time of detection each time the distance sensor 3 detects the distance between the dam blocks 13 by an infrared sensor in a non-contact manner.

The elastic body 2 for varying the width of the main body block 1 constituting the space measuring device 30 is actually the mold space 3
It is imitated by the molten copper supplied to the inside of 3, and the elastic force is set so that the molten copper becomes equivalent to the force pressing the dam blocks 13, 13. Therefore, during measurement, the elastic body 2
Therefore, the force pressing the left and right dam blocks 13, 13 becomes a value close to that of the actual molten metal.
The measured value between the dam blocks detected by is an accurate value close to the actual distance. The width of the distance measuring device 30 is variable to W1 + ΔW.

While the casting machine is operating, the distance between the dam blocks is detected by the distance sensor 3 and the current position is detected by the position sensor 4. The detected values are detected by the processor 5.
Is digitally processed, and the processed data is stored in the storage device 6 as needed. In this way, over the cooling process of the twin belt casting machine, the distance data of the dam blocks 13, 13 with respect to the process position is measured under the same conditions as in reality, that is, with the upper drive belt 11 lowered,
Remembered.

The interval measuring device 3 for which measurement and storage have been completed is taken out from the mold space 33 and stored in the storage device 6 by connecting the output device 51 to the processing device 5 from the outside in order to analyze the measurement data. Retrieve the data. For example, if the output device is a printer, it can be printed out in the form of interval data for position data.
This printed out data contributes to the inspection of the adjusted dam block spacing. If the inspection result is defective, the dam block interval is adjusted again, and the inspection is repeated until it passes.

As described above, the gap measuring device having the main body block of which width is variable is used to inspect the dam block gap while the upper drive belt is lowered. It is possible to set the interval in consideration of shrinkage, to effectively prevent a gap from being generated between the dam blocks and the molten metal, and to increase the cooling efficiency of the molten metal.

Further, since the distance measuring device is portable, it is convenient to handle, and since the sensor, the circuit, the power source and the like are attached to only one block piece, the maintenance is easy.

In the above embodiment, the measured data is stored in the storage device 6 such as the RAM.
It is also possible to attach a telemeter for transmitting and recording data at any time, as shown in FIG. That is, a transmitter 41 that wirelessly transmits data is provided outside the storage device on the side of the interval measuring device 30, and a receiver 42 that receives the data transmitted from the transmitter 41 and the received data are recorded. And a recorder 43. By doing so, the measurement and analysis time can be shortened.

If the principle of the present gap measuring device is used as it is, and if it is vertically rotated by 90 ° about the axis, the gap between the vertical drive belts 11 and 12 can also be measured in principle. . When molten copper solidifies and shrinks, dam block 1
Since a gap is generated not only with the gap 3 but also with the belt, cooling efficiency can be further improved by measuring the gap between the belts in addition to the gap between the dam blocks.

[0029]

According to the present invention, the following effects are exhibited.

(1) Since the interval between dam blocks can be measured in a state close to actual operation, the interval between dam blocks can be set to an interval considering the solidification shrinkage of the molten metal, and the cooling efficiency can be improved.

(2) The cooling water can be reduced by improving the cooling efficiency.

(3) Secondary cooling equipment can be reduced by improving cooling efficiency.

[Brief description of drawings]

FIG. 1 is a view for explaining an embodiment of a gap measuring device between dam blocks in a continuous casting machine of the present invention,
(A) is a plan view and (b) is a side view.

FIG. 2 is a circuit configuration diagram of a device for measuring an interval between dam blocks according to the present embodiment.

3A and 3B are explanatory views of a twin belt casting machine to which the present embodiment is applied, in which FIG. 3A is a sectional view of a main part, FIG.
(C) is a front sectional view.

FIG. 4 is an explanatory view of a twin belt casting machine to which another embodiment of the present invention is applied.

FIG. 5 is a schematic explanatory diagram of a continuous rod continuous casting and rolling facility common to the present invention and the conventional one.

[Explanation of symbols]

 1 Main body block 2 Elastic body 3 Interval sensor 4 Position sensor 5 Processing device 6 Memory device 7 Power supply 8 Block piece 9 Block piece 30 Interval measuring device

Claims (2)

[Claims] 1. A main body block which is inserted into a mold space surrounded by a driving belt on the upper and lower sides by a dam block and is conveyed by the driving of the upper and lower driving belts with the left and right dam blocks, and on the left and right dam blocks by molten metal In order to simulate the pressing force, the left and right widths of the main body block are changed to apply an elastic force to the left and right dam blocks, an interval sensor that detects the interval between the dam blocks that apply the pressing force, and the main body block A position sensor for detecting a position in the mold space; a processing means for processing a distance sensor and a measurement value of the distance and the position detected by the position sensor; and a storage means for storing the processed distance data and the position data. A device for measuring the distance between dam blocks in a characteristic continuous casting machine. 2. A receiver for transmitting the data between the processed dam blocks and the position data between the dam blocks, in place of the storage means, a receiver for receiving the data transmitted from the transmitter, and the received data. The distance measuring device between the dam blocks in the continuous casting machine according to claim 1, further comprising: an output unit for outputting.