JPH0620632B2 - Continuous casting machine Mold cooling device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Field of Industrial Application> The present invention relates to a cooling device for a continuous casting machine mold, particularly a cooling device capable of recovering heat from the cooling water of the mold as steam and having a long life of the heat-receiving metal plate of the mold. It is about.

<Prior Art> A conventional continuous casting machine mold cooling device is shown in FIG. Molten steel 3a injected from the tundish 1 into the mold 2 is
The heat receiving metal plate 31 wall surface of the mold 2 removes heat and cools and solidifies to form a solidified shell 3b. The inside of the mold 2 is cooled by cooling water, and the cooling water is pumped into the mold by the circulation pump 4 via the flow rate control valve 14. The heat from the molten steel transferred to the heat receiving metal plate (hereinafter abbreviated as a plate) of the mold is transferred to the mold cooling water and appears as a rise in the temperature of the cooling water. Therefore, in order to prevent the mold cooling ability from decreasing due to the rise in water temperature, the cooling water return pipe 12 of the cooling water circulation system is used.
A cooling tower 5 was provided at the end of b, the cooling water was cooled to a substantially constant temperature, and was circulated by the cooling water circulation pump 4 through the cooling water supply pipe 12a. Therefore, the sensible heat and the latent heat of solidification of the molten steel are dissipated to the atmosphere by the cooling tower via the cooling water, and the solidification shell 3b and the plate are changed by the change of the casting speed and the type and consumption rate of the lubricant between the mold and the slab. When the heat transfer conditions between the plate 31 and 31 change, the temperature of the plate rises or drops, and there is a drawback that the heat removal conditions are not constant. When the temperature of the mold rises, the heat resistance limit of the plate (for example, copper plate) is exceeded and thermal deformation occurs, or seizure occurs between the solidified shell and the plate, resulting in a constraint breakout. . On the contrary, if the temperature of the mold becomes too low, there is a problem that rapid nonuniform solidification shrinkage of the shell and breakage of the solidified shell due to transformation, that is, frequent occurrence of cracks on the surface of the slab occur.

Also, because the cooling of the hot water on the outlet side of the mold is a cooling method via a cooling tower, the temperature of the mold plate rises when the impurities in the atmosphere are taken into the cooling water and the heat load on the plate increases. However, in the case where cooling water boils on the plate water cooling surface, heat transfer will be further hindered by condensation and adhesion of impurities to the plate water cooling wall, leading to a further rise in plate temperature. There was also a defect. Therefore, a circulating cooling system that uses a cooling medium other than water and further heat-exchanges this cooling medium with water to generate steam is disclosed in JP-A-59-92153 and JP-A-59-192662. Therefore, molten salt or liquid alkali metal is used as a cooling medium. However, these methods have the following problems.

In other words, considering the application to an existing continuous casting machine that uses water as a cooling medium, facility remodeling is large-scale, and it takes time and energy (heat source) to manage the properties of molten salt and liquid alkali metal and maintain the molten state. Requires. In addition, the circulation system requires two systems of molten salt or liquid alkali metal and water, and the equipment cost and maintenance cost are high. Further, similarly to the cooling method using the circulating water system having the cooling tower, the variation of the plate temperature caused by the change of various casting conditions is large, which causes various problems.

<Problems to be Solved by the Invention> As described above, the conventional mold cooling device has the following problems.

That is, in circulating water cooling with a cooling tower, heat is dissipated to the atmosphere.

When molten salt or liquid alkali metal is used as the refrigerant, equipment costs and maintenance costs rise, and it is difficult to apply it to existing continuous casting machines.

When a molten salt or liquid alkali metal is used as the refrigerant, it is difficult to control the properties of these refrigerants and an auxiliary heat source is required to maintain the molten state.

In water cooling with a cooling tower, the amount of circulating water is increased or the plate temperature is increased.

 Increased plate temperature fluctuations.

 Due to the increase of plate thermal deformation.

 Frequent occurrence of slab surface cracking due to.

The present invention has been made to solve the above problems and to provide a cooling device for a continuous casting machine mold which has a simple structure and is inexpensive.

<Means for Solving the Problems> The present invention is a cooling device for a continuous casting machine mold, in which circulating hot water is supplied to a mold to evaporate and boil in the mold, and the cooling device is provided between the mold and a boiler drum. The steam-containing drainage return pipe, the steam pressure measuring means for measuring the steam pressure arranged at the top of the pipe or the boiler drum and outputting the pressure signal to the pressure adjusting device, and the target control pressure value of the secondary side pressure of the mold Appropriate pressure calculation setting means for outputting to a pressure adjusting device, a pressure adjusting device for inputting the pressure signal and a target control pressure value and outputting a pressure adjusting signal, steam discharging for adjusting the steam pressure in the boiler drum by the pressure adjusting signal A valve, a cooling device for a continuous casting machine mold consisting of a feed pipe and a boiler drum arranged between the mold and the boiler drum,
A mold cross-sectional dimension, effective mold height setting means, casting speed measuring means, and / or mold / castle lubricant consumption speed measuring means are provided, and the respective set values and measured values are input to the proper pressure setting means. In a cooling device for a continuous casting machine mold as described above, and a cooling water flow rate control valve provided in a cooling water supply pipe between the mold and the boiler drum, cooling water pressure detecting means and cooling on the primary side of the cooling water flow rate control valve. Opening detecting means for the water flow rate control valve, calculating means (A) for calculating the cooling water flow rate based on the input signals from these detecting means, and / or cooling water flow rate detection provided in the cooling water supply pipeline Means, a cooling water pressure detecting means on the primary side of this cooling water flow rate detecting means, and a calculating means (B) for calculating the cooling water flow rate based on the input signals from these detecting means, and the cooling water flow rate calculation value is set to an appropriate pressure. Input to calculation setting means In the cooling device for a continuous casting machine mold according to the item 1, one or a plurality of temperature measuring sensors or heat flux measuring sensors are provided on the heat receiving metal plate of the mold, and temperature calculating means for calculating temperature or heat flux from the measurement signal. Alternatively, the cooling device for a continuous casting machine mold according to the preceding paragraph, which is provided with heat flux calculation means and inputs the calculated value to the appropriate pressure calculation setting means.

<Operation> In the mold cooling device of the continuous casting machine according to claim 1 of the present invention, in the mold as a heat exchanger between the molten steel forming a part of the circulation system and the cooling water, the supply circulating hot water is supplied. The target output from the output signal of the pressure measuring means and the appropriate pressure calculation setting means provided on either the steam-containing heat drainage return piping path or the head of the boiler drum with a steam diffusion valve connected to the end of the steam The control pressure value is input to the pressure adjusting device, and this pressure adjusting device operates the atmospheric diffusion valve to control the pressure inside the boiler drum, in other words, to control the secondary side pressure of the mold to a constant value. The inner surface temperature is controlled to a constant boiling temperature determined by the secondary pressure of the mold, and the sensible heat and latent heat of solidification of the molten steel cast in the mold are recovered as steam by the boiler drum. Also, unlike the case of using a conventional cooling tower, hot water and steam are separated and hot water is circulated and supplied again to the mold, so that foreign matter in the atmosphere is mixed into the circulating water, and the circulating water piping system or mold is used. It is possible to prevent the cooling ability from being deteriorated by depositing and sticking to the inner cooling water passage.

The mold cooling device according to claim 2 of the present invention further comprises a mold cross-sectional dimension and mold height setting means, a casting speed measuring means, and / or a mold-castle circulating agent consumption speed measuring means, and a set value by these means. By inputting the measured value into the appropriate pressure calculation setting means, and changing the secondary side set pressure of the mold according to the casting speed and the effective mold internal area and / or the mold powder supply speed per unit peripheral length of the mold,
The boiling point of the cooling water on the plate cooling surface of the mold, that is, the plate temperature of the plate, changes according to the amount of heat received by the plate of the mold caused by changes in the transverse dimension of the slab and the casting speed and / or the consumption rate of the circulating agent between the mold and slab The temperature on the inner surface side can be changed to an appropriate constant value, thereby keeping the fluctuation of the plate temperature small, and in addition to the action and effect of claim 1, thermal deformation and restraint break of the plate due to the increase of fluctuation of the plate temperature. It is possible to prevent the occurrence of out and the occurrence of cracks in the slab shell.

A mold cooling device according to a third aspect of the present invention is, in addition to the cooling device according to the first aspect, a cooling water flow rate adjusting means having a cooling water flow rate detecting means and / or an opening degree detecting means in a cooling water supply path to the mold. Valves are provided, and the cooling water flow rate is calculated by the calculation means based on the output value of the pressure detection means provided on each primary side and the output value of the flow rate detection means and / or the flow control valve opening detection means. Since the set pressure on the secondary side of the mold is changed according to the cooling water flow rate, the boiling point of the cooling water on the plate cooling surface of the mold is changed according to the change of the cooling water flow rate per unit internal area of the mold supplied to the mold. That is, the temperature of the contact surface of the mold plate with the cooling water can be adjusted to an appropriate value, and the same action and effect as those of claim 2 can be expected.

According to a fourth aspect of the present invention, in addition to the cooling apparatus according to the first aspect, a mold cooling device is provided with one or a plurality of temperature measuring sensors or heat flux measuring sensors on a plate of a mold, and a measurement signal thereof is used as a temperature or heat flow sensor. Fluctuations in the temperature or heat flux of the plate of the mold, which is converted to a temperature value or a heat flux value through the flux calculation means, and the appropriate pressure calculation setting means fluctuates the secondary side set pressure of the mold due to changes in various casting conditions. In response to the,
Since the change is made directly corresponding to the change of the temperature of the plate of the mold or the heat flux due to various factors, it corresponds to the boiling point of the cooling water in the mold, that is, the cooling water of the plate of the mold. The temperature of the contact surface of can be maintained at an appropriate value,
The same action and effect as the action and effect of claim 2 can be surely expected.

<Example> A specific configuration of the present invention will be described below.

A mold cooling device of a continuous casting machine according to claim 1 of the present invention will be described with reference to the flow sheet / measurement control circuit diagram shown in FIG. The boiler drum 6 is a plate of the mold 2.
It is provided at the end of the return pipe 12d for the steam-containing heat wastewater that has been vaporized by receiving the sensible heat and the latent heat of solidification of the molten metal 3a in the mold via 31, and is separated into steam and hot water here.

The steam is sent to a steam using facility (not shown) through the generated steam supply pipe 10, while hot water (canned water) stored at the bottom of the boiler drum is supplied by the hot water circulation pump 7. Plumbing 12
c, the water is again circulated through the cooling water flow rate control valve 14 to the mold 2. An output signal of a steam flow meter (not shown) provided in the pipe 10 or a boiler drum for replenishing can water in an amount equal to the amount of steam sent from the boiler drum through the generated steam feed pipe 10. Based on an output signal from an internal liquid level gauge (not shown), a boiler is supplied from a can water storage tank 8 to a can water replenishment pipe 12e by a can water replenishment pump 9 via a can water replenishment flow control valve 34. Can water is supplied to the drum 6.

Steam pressure measuring means 15 on the secondary side of the mold is provided in the middle of the steam-containing heat drainage return pipe 12d from the mold 2.
The output signal is input to a pressure adjusting device (for example, a PID pressure adjusting device) 11 and compared with a target control pressure value input from the appropriate pressure calculation setting means 16 to the pressure adjusting device. An operation signal is sent to the steam diffusion valve 13 attached to the boiler drum 6 to control the internal pressure of the boiler drum 6, that is, the secondary side pressure of the mold so as to reach the set target control pressure.

Next, an embodiment of the continuous casting machine mold cooling device according to claim 2 of the present invention will be described with reference to the flow chart and measurement control circuit diagram of FIG. The embodiment of FIG. 2 is different from the embodiment of FIG. 1 in that the pressure gauge 15 has a steam-containing heat drainage return pipe 12 from the mold 2.
not on d, but on the top of the boiler drum,
There are the following differences. That is, the celsine connected to one end of the rotary shaft of the pinch roll 18 for pulling out the slab 3c of the continuous casting machine.
The rotation of the pinch roll is detected by 19a, and the signal is sent to the casting speed calculation means 19b to calculate the casting speed from the rotation speed and the outer diameter of the pinch roll provided with Celsin. On the other hand, from the lower end of the storage hopper 20 of the mold powder 28, which is generally used as a lubricant between the mold slabs, to the mold 2 via the flexible tube 24 and the screw feeder 25.
The layer thickness of the mold powder to be supplied and removed on the surface of the molten steel inside, for example, the well-known eddy current type or electrode type in-mold molten metal surface detection device for detecting the molten metal height of the molten metal and the mold powder surface height are detected. Rotation of the variable speed motor 26 for driving the screw feeder so that the powder layer thickness in the mold is always set to an appropriate set value, which is measured by combination with a well-known ITV imaging image analysis type or microwave type powder surface height detection device. The speed is controlled, and the rotation speed of the variable speed motor is detected by the Celsin 27a,
The mold powder supply speed, that is, the consumption speed, is obtained by the mold powder supply speed calculation means 27b from the relational expression between this rotation speed, the rotation speed set in advance and the mold powder supply speed. The supply speed of the mold powder is 3 between the mold powder storage hopper support frame 23 and 3 to 4 brackets having the storage hopper 20 for the mold powder 28 fixed to the outer periphery of the storage hopper 20 symmetrically about the center of the hopper. It is also possible to support by ~ 4 load cells 21, add the output voltage signals of these load cells with an adder 22b, and then obtain the weight of mold powder in the hopper and the mold powder supply speed calculation means 22c.

The casting speed value and / or the mold powder supply speed measured as described above is set to the proper pressure calculation setting means 16
To enter. On the other hand, these values are input to the proper pressure calculation setting means 16 manually in advance through the mold inner surface cross-sectional dimensions (thickness and width) and the mold effective height input means 17 or from the process computer, and The area, that is, the area from the meniscus to the lower end of the mold to which heat is effectively transferred to the plate 12, is obtained as a product of constants determined by the above-described dimensions and casting conditions, and the inner circumferential length of the horizontal cross section of the mold is calculated. Proper target based on the relational expression or table obtained by experience from the casting speed value and the effective mold internal area (effective plate heat receiving area) and / or the mold powder supply speed per unit length of the inner peripheral surface of the horizontal section of the mold The control pressure is calculated by the calculation setting means 16, and the value is input to the pressure adjusting device 11. In this pressure adjusting device 11, the pressure gauge output signal at the top of the boiler drum is compared with the appropriate target control pressure, and the steam diffusion valve 13 is operated in accordance with the deviation thereof to operate the pressure inside the boiler drum, that is, the mold two. The secondary pressure is controlled to an appropriate target pressure.

Next, an embodiment of the mold cooling apparatus according to claim 3 of the present invention will be described with reference to the flow chart and measurement control circuit diagram shown in FIG. The embodiment shown in FIG. 3 is different from the embodiment shown in FIG. 1 in that a flow rate detecting means (an orifice type differential pressure detecting transmitter in the figure) is provided in the hot water supply pipe 12c from the boiler drum 6 to the mold 2. 29a) is provided, and the hot water flow rate is calculated from the output signal by the calculating means 29b. Further, the hot water flow rate measured value, since the pressure on the primary side of the flow rate detecting means changes according to the change of the pressure on the secondary side of the mold and the opening degree of the cooling water flow rate control valve 14, it was corrected according to the pressure. Is preferable. Therefore, it is desirable to obtain the pressure by the primary pressure gauge 29c of the flow rate detecting means and input the output value to the flow rate calculating means 29b. The flow rate value thus obtained is set to the appropriate pressure calculation setting means 16
To enter. On the other hand, instead of having the above-mentioned flow rate measuring means, the flow rate control valve 14 is provided with an opening degree detection means 30a, and the pressure gauge 30c is provided on the primary side of the flow rate control valve 14, and the flow rate control that has been previously measured and input is adjusted. A flow rate calculating means 30b for indirectly obtaining the cooling water flow rate from the valve opening signal primary side pressure value based on the characteristic curve of the opening degree of the valve 14, the primary side pressure and the flow rate is provided, and its output value is set to the proper pressure. Input to the calculation setting means 16. In this way, the proper target control pressure is obtained by the calculation setting means 16 based on the relational expression or table empirically obtained from the cooling water flow rate, and the pressure value is input to the pressure adjusting device 11, and thereafter, the above-mentioned first Also, as in the case of the second embodiment, the pressure in the boiler drum, that is, the mold secondary side pressure is controlled to a target value.

In the above embodiment, the cooling water flow rate is obtained through the flow rate calculation means 29b or 30b and the cooling water flow rate value is input to the proper pressure calculation setting means 16. However, the flow rate calculation means 29b or 30b is not used and the third As shown by the one-dot chain line in the figure, the flow rate detecting means 29
The output signal of b and the output value of the primary pressure gauge 29c of the flow rate detecting means are directly input to the proper pressure calculation setting means 16, or the output signal of the opening degree detecting means 30a of the flow rate adjusting valve 14 and the flow rate adjusting valve. The output value of the pressure gauge 30c on the primary side is directly input to the proper pressure calculation setting means 16, and the proper target control pressure is calculated by the calculation setting means 16 based on a relational expression or a table empirically obtained from these input values. You may ask.

An embodiment of claim 4 of the present invention is shown in FIG. 4 which is a flow chart and measurement control circuit diagram. The difference between the embodiment shown in FIG. 4 and the first embodiment is that the mold 2 is used in addition to the first embodiment.
One or a plurality of temperature measuring sensors 32a such as thermocouples or heat flux measuring sensors 33a are provided on the surface of the plate 31 contacting with the hot water for cooling, and the output signal thereof is temperature calculating means 32b.
Alternatively, the temperature value or the heat flux value is input to the appropriate pressure calculation setting means 16 via the heat flux calculating means 33b. The appropriate pressure calculation setting means 16 obtains an appropriate target pressure according to the temperature value or the heat flux value based on a relational expression or a table obtained from past experience, and thereafter, the first to third embodiments. Similarly, the pressure in the boiler drum 6, that is, the secondary pressure of the mold is controlled to be a target value. When a plurality of temperature sensors or heat flux sensors are set, the appropriate target pressure may be appropriately selected from the average value, median value, maximum value, etc. of the measured values.

In each of the first to fourth embodiments, the hot water circulation pump 7 is used to forcibly circulate the hot water, but depending on the setting position of the boiler drum 6, natural circulation by gravity may be used. Is.

Next, specific examples of the present invention will be described below.

Casting low carbon steel slab with thickness: 260mm, width: 1000mm with circulating water volume of 200t / h, using degassed pure water of 100 ℃ as can water, using the cooling device with the equipment configuration shown in Fig. 4. Speed: 1.0
The mold was cooled while casting at m / min to 1.8 m / min. A copper plate having a thickness of 40 mm was used as the template plate.

At a casting speed of 1.0 m / min, the secondary pressure of the mold is 1.2 kg / c.
When set to m ² -G and cast, the mold copper plate temperature was controlled to 122 ° C. ± 1 ° C. in the vicinity of the cooling surface, and the steam generation amount was 5.8 t / h. Next, when the casting speed was increased to 1.2 m / min, the amount of steam generated increased to 6 t / h, and the temperature of the mold copper plate fluctuated ± 5 ° C, so the pressure was increased to 3 kg / cm ² -G. . As a result, the temperature fluctuation of the copper plate was suppressed to ± 1 ° C, and the plate temperature became stable at 144 ° C. At the casting speed of 1.8 m / min, the mold secondary side pressure set value is 7 kg / cm ² −
Steam of 7 t / h was generated at G. When the casting speed is reduced from 1.8 m / min to 1.2 m / min, the plate temperature is almost adjusted by adjusting the pressure inside the boiler drum so that the boiling point is 2 ° C lower than the copper plate temperature as the copper plate temperature decreases. There was no fluctuation (less than ± 1 ° C) and it decreased.

Further, after the 1200-charge casting was performed using the apparatus of the present invention, there was no deposit on the water-cooled surface side of the copper plate.

The data in the case of a cooling device using cooling or the like as shown in FIG. 5 as a comparative example is as follows. 1.0m /
Following casting at a rate of minutes, the steel plate temperature was 122 ° C ± 10 ° C. At 1.8 m / min, the plate temperature fluctuated greatly at 165 ± 15 ° C. The copper plate temperature is 0.13 as the casting charge increases.
℃ / charge will continue to rise, 1.8m after 650 charge /
It showed a temperature of 250 ° C. when minute casting was performed. The maximum distortion of the steel sheet at this point was 0.5 mm, and it became unusable after 650 charges. As a result of observing the cross section of the next copper plate with a microscope, impurities were attached to the cooling surface side in a thickness of about 500 μm.

As is clear from the above, according to the present invention, the sensible heat of the molten metal and the latent heat can be recovered as steam by simple equipment modification, the temperature fluctuation of the mold plate can be reduced, and the thermal deformation of the mold plate is small and the service life is reduced. I could make it longer.

<Effects of the Invention> The following excellent effects are obtained by using the mold cooling device of the continuous casting machine of the present invention.

Conventionally, a part of the sensible heat and latent heat of the molten metal in the mold, which has been diffused into the atmosphere through the cooling tower, can be effectively recovered as vapor.

Compared to the case of using molten salt or liquid alkali metal as the cooling heat medium, the cost of the existing continuous casting machine is small and the cost is low, and the application to the existing equipment is easy.

Facility maintenance and maintenance of heat medium properties are easier than when a molten salt or liquid alkali metal is used as the heat medium, and no auxiliary heat source is required.

Compared with circulating water cooling using a cooling tower, the amount of circulating water is small and the equipment becomes compact.

Since it is cooled by boiling, there is almost no fluctuation in the plate temperature of the mold, and there is little instantaneous fluctuation in the heat load on the mold.

Since circulating water does not come into contact with the atmosphere and pure water or soft water is used, the circulating water contains few impurities. Therefore, impurities do not adhere to the cooling surface of the mold, and the temperature rise and thermal deformation of the plate due to heat transfer inhibition are small. As a result, the life of the mold plate is greatly extended.

[Brief description of drawings]

1 to 4 are flow charts and measurement control circuit diagrams respectively showing the first to fourth embodiments of the present invention, and FIG. 5 is a general cooling device for a conventional continuous casting mold (example). FIG. 1 ... Tundish, 2 ... Mold, 3a ... Molten metal, 3b ... Solidified shell, 3c ... Cast piece, 4 ... Cooling water circulation pump, 5 ... Cooling tower, 6 ... Boiler drum, 7 ... … Hot water circulation pump, 8 …… Can water storage tank, 9 …… Can water supply pump, 10 …… Generated steam feed pipe, 11 …… Pressure adjusting device, 12a …… Cooling water feed pipe, 12b …… Cooling water return pipe, 12c …… Hot water supply pipe, 12d …… Steam-containing heat drainage return pipe, 12e …… Can water supply pipe, 13 …… Steam diffusion valve, 14 …… Cooling water flow control valve, 15… ... Steam pressure measuring means, 16 ... Proper pressure calculation setting means, 17 ... Mold cross-sectional dimension and effective mold height setting means, 18 ... Pinch roll, 19a ... Celsin, 19b ... Casting speed calculation means, 20 ...... Mold powder storage hopper, 21 …… Support bracket, 22a …… Load cell, 22b …… Adder, 22c …… Mold powder weight in hopper and supply speed calculation means, 23 …… Hopper stand, 24 …… Flexible tube, 25 …… Screw feeder, 26 …… Variable speed geared motor for driving screw feeder, 27a …… Celsin, 27b …… Mold powder supply speed calculation means, 28a …… Mold powder, 28b …… Mold powder in mold, 29a …… Cooling water flow rate detection means, 29b …… Cooling water flow rate calculation means (B), 29c …… Cooling water pressure detecting means, 30a ... Cooling water flow rate adjusting valve opening detecting means, 30b ... Cooling water flow rate calculating means (A), 30c ... Cooling water pressure detecting means, 31 ... Heat receiving metal plate, 32a ... Temperature measuring sensor, 32b ... Temperature calculating means, 33a ... Heat flux measuring sensor, 33b ... Heat flux calculating means, 34 ... Can water replenishment flow rate control valve.

Claims (4)

[Claims] 1. A continuous casting machine mold cooling device for supplying circulating hot water to a mold to evaporate and boil in the mold, comprising a steam-containing drainage return pipe arranged between the mold and a boiler drum. Steam pressure measuring means disposed on the pipe or on the top of the boiler drum to measure the steam pressure and output a pressure signal to the pressure adjusting device, and a proper pressure calculation to output the target control pressure value of the secondary side pressure of the mold to the pressure adjusting device. Setting means, a pressure adjusting device for inputting the measured pressure signal and the target control pressure value and outputting a pressure adjusting signal, a steam diffusion valve for adjusting the steam pressure in the boiler drum by the pressure adjusting signal, a mold and a boiler drum A continuous casting machine mold cooling device comprising a feed pipe and a boiler drum arranged between the two. 2. A means for setting a mold cross-sectional dimension and an effective mold height,
2. A cooling device for a continuous casting machine mold according to claim 1, further comprising casting speed measuring means and / or means for measuring the lubricant consumption rate between the mold and the slab, and inputting respective set values and measured values to the proper pressure calculation setting means. . 3. A cooling water flow control valve provided in a cooling water supply pipe between a mold and a boiler drum, a cooling water pressure detecting means on the primary side of the cooling water flow control valve, and an opening degree of the cooling water flow control valve. The detecting means and / or the calculating means (A) for calculating the cooling water flow rate based on the input signals from these detecting means are the cooling water flow rate detecting means provided in the cooling water supply pipe and the cooling water flow rate detecting means. A means for detecting the cooling water pressure on the primary side of the means, a calculating means (B) for calculating the cooling water flow rate based on the input signals from these detecting means, and inputting the cooling water flow rate and the calculated value to the appropriate pressure calculation setting means. The continuous casting machine mold cooling device according to 1. 4. A heat receiving metal plate of a mold is provided with one or more temperature measuring sensors or heat flux measuring sensors, and temperature calculating means or heat flux calculating means for calculating temperature or heat flux from the measurement signal is provided. The cooling device for a continuous casting machine mold according to claim 1, wherein the calculated value is input to an appropriate pressure calculation setting means.