KR20160089728A

KR20160089728A - Water spray apparatus and method for cooling a mold of a continuous casting device

Info

Publication number: KR20160089728A
Application number: KR1020150009308A
Authority: KR
Inventors: 손종하
Original assignee: 손종하
Priority date: 2015-01-20
Filing date: 2015-01-20
Publication date: 2016-07-28

Abstract

The present invention relates to a water spraying device for cooling a mold of a continuous casting device and a water spraying method and, more specifically, relates to a water spraying device for cooling a mold of a continuous casting device and a water spraying method capable of cooling the mold by preventing a water spray if a mold temperature is lower than a preset temperature (40) or if the mold is not actually placed at a position, spraying a preset water spray amount of water to the mold of which a temperature is a preset temperature or higher in accordance with a water spray model by setting the water spray amount based on a water spray amount recipe, which is inputted molten steel temperature () x inputted molten steel weight (kg) x 0.01 / reclamation sand temperature () = water spray amount (), and sensing the mold temperature and an existence of the mold at the mold position. The water spraying device for cooling the mold of the continuous casting device comprises: a temperature sensing unit; a mold sensing unit; a humidity sensor; a temperature sensor; and a control nozzle.

Description

[0001] The present invention relates to a continuous casting apparatus,

More particularly, the present invention relates to an apparatus and method for mold cooling of a continuous casting apparatus, and more particularly, to a casting recipe according to a casting model, that is, a molten metal injection temperature () x molten metal injection weight (kg) x 0.01 / The main quantity is set by the main quantity (), the mold temperature and whether or not the mold is actually located at the mold position is detected so that the mold temperature is not less than the set temperature 40 or the mold is not positioned at the mold position, And a mold cooling water injecting apparatus and method for a continuous casting apparatus characterized by spraying a main water according to a main water model to a mold having a set temperature or higher.

As a conventional technique, a method of controlling a cooling nozzle of a continuous casting facility for selecting a spraying method of nozzles according to the speed of casting is disclosed in Japanese Patent Laid-Open Publication No. 10-2014-0081471, and in JP-A No. 10-2012-0020508 In order to cool the strand, a technique of controlling the spray angle of the nozzle is known. However, in the prior art, excessive amount of main quantity is injected into the mold at a high temperature which is injected into the molten metal in the continuous casting apparatus and moved to the degassing apparatus, Or the main water supply is insufficient, so that the main cooling water is not properly cooled, resulting in generation of branches and fumes in the desorption process.

Therefore, an improved cooling water injection apparatus and method capable of spraying the calculated main water quantity by selecting only the mold injected with the molten metal are calculated for the cooling water of the high-temperature mold fed with the molten metal in the continuous casting apparatus .

In the present invention, a casting model is used to estimate the amount of molten metal according to the temperature of a molten metal in a high-temperature mold to which molten metal is injected in a continuous casting apparatus. The molten metal is detected only by the molten metal injection, And an object of the present invention is to provide an apparatus and a method.

In order to achieve the above object, the present invention provides a continuous casting apparatus including a molding machine, a melt injection unit, a drum degasser, and a sand treatment unit;

A temperature sensing unit 140 for sensing the temperature of the mold being moved by the conveyor after injection of the molten metal;

A mold sensing unit 150 for sensing whether or not the mold is present at the mold position on the conveyor;

A humidity sensor and a temperature sensor for detecting humidity and temperature of the recovered yarn after passing through the drum degasser;

When the mold temperature sensed by the temperature sensing unit 140 is less than the set temperature or the mold does not exist at the mold position on the conveyor by the mold sensing unit 150, And controls to spray the calculated main quantity only with respect to the mold having a temperature equal to or higher than the set temperature sensed by the temperature sensing unit 140 and the mold sensing unit 150. In addition, A control unit for controlling the main water quantity to be increased or decreased by the humidity and the temperature of the recovered yarn measured by the temperature sensor;

A plurality of nozzles 210 formed to spray the main water estimated by the control unit;

And a vibrating conveyor (220) configured to vibrate / convey the mold under the nozzle (210).

The present invention also provides a method for controlling a water injection system, comprising: turning on a water injection device;

Calculating the number of weeks by the mold model and the temperature of the molten metal according to the temperature of the molten metal, (x) the amount of molten metal injected (kg) x 0.01 / the temperature of the molten metal ()

The temperature sensing unit 140 senses the mold temperature and detects whether or not the mold is present at the mold position on the conveyor by the mold sensing unit 150 so that the mold temperature is lower than the set temperature or is not present at the mold position on the conveyor And spraying the calculated main quantity only with respect to the actual mold having a temperature equal to or higher than the set temperature;

And a step of increasing or decreasing the main water quantity by the humidity and the temperature of the recovered yarn measured by the humidity sensor and the temperature sensor after passing through the drum desalination part.

The present invention relates to a mold cooling water injecting apparatus and method in a conventional continuous casting apparatus provided with a vibrating conveyor and a spray nozzle installed before a drum degas.

In the present invention, while spraying on the vibrating conveyor, the mold water and the product are separated and mixed, and the calculated main water is sprayed uniformly and cooled.

In the present invention, the set temperature, which is a criterion for determining whether or not the molten metal is injected into the mold, is about 40, and it is possible to change the set temperature.

The present invention calculates the optimum number of weeks by the mold model and the temperature of the molten metal according to the temperature of the molten metal () x the molten metal injection weight (kg) x 0.01 / To prevent sand tangling and branching.

In the present invention, the mold temperature and the presence or absence of the mold are detected, the sprayed water is searched only for the mold injected with the molten metal, and the spray is cooled. The precooled material is transferred to the drum degas will be.

If the humidity is lower than the set value and the temperature is higher than the set value, the main water quantity is increased. On the contrary, when the humidity is high and the temperature is low, the main water quantity is increased So that the optimum humidity and temperature conditions are transferred to the post-treatment process.

The present invention has an effect of estimating the main water quantity in consideration of the mold model and the temperature of the molten metal and spraying the molten metal only to obtain a smooth demineralization by cooling water according to an appropriate main water quantity, It is possible to improve the quality of the main irradiation after the mixer operation by keeping the humidity before the mixer operation uniformly by controlling the temperature of the yarn irradiation uniformly.

1 is a view showing a cooling water syringe device of the present invention.
2 is a flow chart of the cooling water injection method of the present invention.
3 shows the configuration of the control unit of the present invention.

1 is a view showing a cooling water syringe device of the present invention in which a treated sand is supplied to a hopper 105 and a mold 120 formed in a molding machine 110 is moved by a conveyor, Injected and moved.

The mold temperature is sensed by the temperature sensing unit 140, the mold sensing unit 150 senses the presence of the mold, and then the cooling water injecting apparatus including the vibrating conveyor and the spray nozzle is inserted into the mold, It is sprayed through multiple nozzles on the separated / mixed state with the product.

The mold and the product pre-cooled while passing through the cooling water syringe device 200 enter the entrance of the drum degas part 300 and are separated into a sand and a product.

Figure 2 is a flow chart of the cooling watering method of the present invention, comprising the steps of turning on the watering device;

Calculating the main water quantity by the mold model and the molten metal injection temperature () x the molten metal injection weight (kg) x 0.01 / the recovery temperature () = the main quantity ();

The mold temperature is detected by the temperature sensing unit to determine whether the mold temperature is above or below the set temperature, and whether the mold is present at the conveyor mold position is sensed by the mold sensing unit. If the mold temperature is below the set temperature And a step of spraying the calculated main quantity to the actual mold having a temperature equal to or higher than the set temperature by controlling the mold so that the mold does not exist.

FIG. 3 is a block diagram of a control unit according to the present invention. In the MOLDING M / C panel, a molding model and a count signal for each mold are sent to a SPRAY panel. The temperature signal detected by the temperature measuring unit, Signal and the recovery temperature and moisture signal to the SPRAY panel. In the MOLDING M / C panel, the mold temperature sensor signal sent from the SPRAY panel and the mold presence / absence signal are received and the mold model and the melt temperature The calculated quantity of stock is sent to the SPRAY panel, and the SPRAY panel controls spraying the calculated quantity of stock to the mold.

In addition, the present invention is configured to increase / decrease the humidity and temperature of the recovered yarn passing through the drum degasser by feeding back the values sensed / measured by the humidity sensor and the temperature sensor.

When changing the model, calculate the number of cooling lines for the remaining number, and take the number of weeks before the model change. If the remaining quantity is 0, the week quantity is changed by the quantity of the recipes of the changed model.

You can display the set temperature and the target mold number on the HMI, the number of completed molds, and the number of remaining molds.

The present invention includes various embodiments that can be practiced in the ordinary skill in the art without being limited to the above embodiments.

A hopper 110, a molding machine 120, a mold 130, a molten metal inlet 140, a temperature sensing unit 200, a cooling water injector 210, a nozzle 220, a vibrating conveyor 300,

Claims

In a conventional continuous casting apparatus including a molding machine, a molten metal injection portion, a drum degasser portion, and a sand processing portion,

A temperature sensing unit 140 for sensing the temperature of the mold being moved by the conveyor after injection of the molten metal;

A mold sensing unit 150 for sensing whether or not the mold is present at the mold position on the conveyor;

A humidity sensor and a temperature sensor for detecting humidity and temperature of the recovered yarn after passing through the drum degasser;

When the mold temperature sensed by the temperature sensing unit 140 is less than the set temperature or the mold does not exist at the mold position on the conveyor by the mold sensing unit 150, And controls to spray the calculated main quantity only with respect to the mold having a temperature equal to or higher than the set temperature sensed by the temperature sensing unit 140 and the mold sensing unit 150. In addition, A control unit for controlling the main water quantity to be increased or decreased by the humidity and the temperature of the recovered yarn measured by the temperature sensor;

A plurality of nozzles 210 formed to spray the main water estimated by the control unit;

And a vibrating conveyor (220) configured to vibrate / convey the mold below the nozzle (210).

Turning the injector device on;

Calculating the number of weeks by the mold model and the temperature of the molten metal according to the temperature of the molten metal, (x) the amount of molten metal injected (kg) x 0.01 / the temperature of the molten metal ()

The temperature sensing unit 140 senses the mold temperature and detects whether or not the mold is present at the mold position on the conveyor by the mold sensing unit 150 so that the mold temperature is lower than the set temperature or is not present at the mold position on the conveyor And spraying the calculated main quantity only with respect to the actual mold having a temperature equal to or higher than the set temperature;

And increasing or decreasing the main water quantity by the humidity and the temperature of the recovered yarn measured by the humidity sensor and the temperature sensor after passing through the drum degasser.