KR101173288B1 - Metallic nozzle with built-in heaters for manufacturing metal plate - Google Patents

Metallic nozzle with built-in heaters for manufacturing metal plate Download PDF

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Publication number
KR101173288B1
KR101173288B1 KR1020100002822A KR20100002822A KR101173288B1 KR 101173288 B1 KR101173288 B1 KR 101173288B1 KR 1020100002822 A KR1020100002822 A KR 1020100002822A KR 20100002822 A KR20100002822 A KR 20100002822A KR 101173288 B1 KR101173288 B1 KR 101173288B1
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South Korea
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metal
heating means
nozzle body
metal nozzle
auxiliary
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KR1020100002822A
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Korean (ko)
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KR20110082890A (en
Inventor
남종일
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남종일
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Abstract

The present invention relates to a metal nozzle for producing a metal plate with a heating means, and more particularly, in the production of a metal plate by extruding a molten metal melted at a high temperature through a metal nozzle, embedded in the upper and lower outer surfaces of the metal nozzle body. The grooves are etched and installed by inserting a plurality of heating means, and forming auxiliary heating means insertion holes at both left and right sides of the metal nozzle body to embed auxiliary heating means, and to insulate the upper and lower outer surfaces of the metal nozzle body. After the configuration, the electric power is supplied to each of the heating means and the auxiliary heating means so that heat is generated from the heating means and the auxiliary heating means to be transferred to the metal nozzle body, thereby heating the upper and lower parts of the metal nozzle body and the entire left and right sides of the metal. The whole nozzle has the advantage of having an even heat distribution, and the metal nozzle body A high-temperature molten metal, the present invention relates to a metal nozzle for the production of heating the means is embedded metal sheet with the advantages of preventing the solidification and sticking phenomenon of the molten metal in advance arising from contact with a cold metal nozzle controlled to maintain.

Description

Metal nozzle for producing sheet metal with built-in heating means {METALLIC NOZZLE WITH BUILT-IN HEATERS FOR MANUFACTURING METAL PLATE}

The present invention relates to a metal nozzle for producing a metal plate material with a built-in heating means, and more particularly, in the production of a metal plate material by extruding a molten metal melted at a high temperature through a metal nozzle. It is built by installing a heat insulating means on the outer surface of the metal nozzle body and by supplying power to the heating means to generate heat, so that the metal nozzle body to maintain a temperature above a certain value, so that the hot metal melt The present invention relates to a metal nozzle for producing a metal sheet having a heating means for preventing solidification and sticking of the molten metal generated by contact with the metal nozzle.

In general, in order to produce a thin sheet metal sheet by dissolving metal, it is a nozzle apparatus for continuously extruding and scanning a certain thickness of metal sheet material by supplying a melting furnace and a metal molten metal which are largely dissolved into a high-temperature liquid metal molten metal from the melting furnace. The metal plate manufacturing apparatus which is comprised is used. Usually, in the apparatus for producing a metal sheet, a nozzle apparatus made of a metal having a very high melting point is used. The high temperature metal sheet produced by the metal sheet manufacturing apparatus is subjected to a post-treatment process such as rolling cooling or injecting into a mold to have a predetermined shape.

However, such a metal plate manufacturing apparatus using the metal nozzle is a high temperature molten metal melted in the melting furnace passes through the low temperature metal nozzle rapidly cooled and solidified, resulting in a decrease in fluidity causing continuous extrusion injection problem In addition, there is a problem in that the surface quality of the metal sheet produced by being partially stuck to the metal nozzle at all, and there is a hassle to disassemble and maintain the metal nozzle from time to time to remove the impurities stuck in the metal nozzle.

In order to solve the above problems, a means for heating the metal nozzle using a gas torch is used so that the metal nozzle has a temperature higher than a predetermined value, but the heating means using the gas torch has a gas injection device and an ignition device outside the metal nozzle. It takes a lot of cost and space by installing a separate device, etc. Also, the heating means is located on the upper or lower part of the metal nozzle to heat only one part of the upper and lower parts, thereby maintaining the entire metal nozzle at a constant temperature. there was.

In addition to the metal nozzle heating means using the gas torch as described above, a means for heating the metal nozzle using a high frequency current is also used. In other words, the coil is wound around the outside of the metal nozzle, and a separate high frequency current generator is mounted so that a high frequency current flows in the coil to react with the magnetic metal nozzle to generate heat. However, the metal nozzle heating means using the high frequency current can be expected to be effective only when the metal nozzle itself has ferromagnetic properties, so there is no limit to the material of the metal nozzle that can be used, and the thickness of the coil for the high frequency coil is very thick. Since the coil could not be wound tightly over the whole, heat transfer to the metal nozzle was difficult and there was a problem in that the entire portion of the metal nozzle could not be evenly heated.

The technical problem to be solved by the present invention, in the process of producing a metal sheet by extruding a high temperature liquid metal molten metal through a metal nozzle, a plurality of heating means and a metal nozzle body installed in the metal nozzle body is radiated heat to the outside The metal nozzle body is maintained at a predetermined temperature or more by using a heat insulating means that prevents the molten metal from being solidified by cooling while passing through the metal nozzle, thereby preventing fluidity from being lowered or sticking to the inside of the metal nozzle. The present invention provides a metal nozzle for producing a metal sheet, which has a heat distribution that can be distributed over all parts of the metal nozzle and has excellent heat transfer efficiency.

Metal nozzles for producing metal sheet material with a heating means for solving the above technical problem, the upper nozzle body and the lower nozzle body in which the internal groove formed by etching in a predetermined pattern as a whole formed on the outer surface is combined in the form of a nozzle A metal nozzle body having an inlet portion through which the metal sheet material is melted and introduced, and an outlet portion having a cross section formed to extrude the metal sheet material; Heating means having a shape corresponding to the built-in groove is inserted into the built-in groove installed; Heat insulating means covering the heating means and attached to an outer surface of the metal nozzle body; A power supply unit connected to the heating unit to supply power for heating; Auxiliary heating means insertion through-holes which are formed toward the front from the rear of the left and right sides of the metal nozzle body; Auxiliary heating means in the form of rod is installed in the auxiliary heating means insertion hole; And an auxiliary power supply for supplying power to the auxiliary heating means.

At this time, the heating means is composed of a thin plate-shaped heat transfer plate and the heat-conductive electrical insulator to seal the heat transfer plate, the heat transfer plate is preferably configured using a nickel-chromium alloy or iron-chromium alloy material, the built-in groove And the heating means may have a shape like a maze of a certain pattern to maximize the heat generating area and increase the thermal efficiency. In addition, the heat insulating means is in close contact with the metal nozzle body and the size and shape of the ceramic material having a size and shape completely covering the outer surface of the metal nozzle body, the size and shape of the heat insulating material and the metal nozzle together with the heat insulating material It may be composed of a fixing plate that is fastened to the outer surface of the main body with fasteners.

The power supply unit is a temperature sensor device for measuring the temperature of the metal nozzle body, the control means for receiving the temperature information from the temperature sensor device to control the supply of power delivered to the heating means and the opening and closing transmitted by the control means It may be configured to further include a temperature control unit configured to switch to receive the signal to open and close the supply of power.

On the other hand, the auxiliary heating means, it is preferable to use a cartridge heater consisting of a heat-transfer body made of nickel-chromium alloy or iron-chromium alloy and a thermally conductive electrical insulator surrounding the heat-transfer body.

In addition, the auxiliary power supply unit auxiliary temperature sensor device for measuring the temperature of the metal nozzle body, the auxiliary control means for receiving the temperature information from the auxiliary temperature sensor device to control the supply of power delivered to the auxiliary heating means and the The auxiliary temperature control unit may further include an auxiliary temperature control unit configured to receive an opening / closing signal transmitted by the auxiliary control unit and to open and close the supply of power.

The present invention is installed by inserting a heating means into a plurality of internal grooves having a predetermined pattern etched on the upper and lower outer surface of the metal nozzle body to ensure that the heat generated from the heating means is transferred to the metal nozzle body is very excellent heat transfer efficiency, By using a thin plate heating means, it can be installed on any part of the metal nozzle body as well as the front end of the thin metal nozzle body, so that the entire metal nozzle can be heated without any leak. There is an advantage that can be minimized.

In addition, by inserting and installing the auxiliary heating means in the auxiliary heating means insertion hole formed from the rear to the front in the left and right both ends of the metal nozzle body by heating the left and right both ends separately, thereby minimizing the temperature deviation between the left and right sides of the metal nozzle. Another advantage is that the heat distribution is evenly distributed throughout the metal nozzle.

In addition, by receiving the temperature information measured from the temperature sensor device connected to the metal nozzle to automatically control the supply of power delivered to the heating means to control the heat generated from the heating means to ensure that the metal nozzle always maintain a constant temperature There is another advantage that can be.

1 is a perspective view of the metal nozzle for the production of metal plate built-in heating means according to the present invention.
Figure 2 is an exploded perspective view of a metal nozzle for producing a metal sheet material with a built-in heating means according to the present invention.
Figure 3 is an exploded rear view of the metal nozzle for producing a metal plate material is built-in heating means according to the present invention.
4 is a cross-sectional view of the heating means according to the invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

1 is a combined perspective view of a metal nozzle for producing metal plate material with a heating means according to the present invention, Figure 2 is an exploded perspective view of a metal nozzle for metal plate production with a heating means according to the present invention, Figure 3 An exploded rear view of a metal nozzle for producing a metal sheet having a heating means according to the invention.

1 and 2, the external configuration of the metal nozzle for producing a metal plate material with a heating means according to the present invention is the heating means 200 and the auxiliary heating means 300 is built in the hot molten metal molten metal The metal nozzle main body 100 which is supplied and extruded into a metal sheet and scanned and the heat insulating means 400 to block the external dissipation of heat, the power supply unit 500 for supplying current to the heating means and the auxiliary heating means and the auxiliary power supply ( 600).

On the other hand, although the power supply unit 500 and the auxiliary power supply unit 600 is not shown in the drawing, the temperature sensor device and the auxiliary temperature sensor device for measuring the temperature of the metal nozzle body 100, the temperature sensor device and the auxiliary temperature sensor Control means and auxiliary control means for receiving the information about the temperature from the device to regulate the supply of power delivered to the heating means 200 and the auxiliary heating means 300, and transmitted by the control means and the auxiliary control means It is preferable to add and configure the temperature control unit and the auxiliary temperature control unit comprising a switch for receiving the open and close signal to open and close the power supply and the auxiliary switch.

First, when the power supply unit and the auxiliary power supply unit are operated to supply power to the heating means 200 and the auxiliary heating means 300, the heat transfer plate 210 in the heating means heats up and down the metal nozzle body 100. The heating element in the auxiliary heating means heats the left and right side ends of the metal nozzle body 100. As the metal nozzle body 100 gradually heated as described above is prevented from dissipating heat to the outside by the heat insulating means 400, the temperature is gradually increased, and the metal nozzle body 100 reaches a constant temperature. It is detected by the temperature sensor device or the auxiliary temperature sensor device to provide temperature information to the control means or auxiliary control means to reduce the supply of power delivered to the heating means 200 or auxiliary heating means 300 or to control or auxiliary The control means transmits a signal to the switch or the auxiliary switch to stop the power supply to prevent the heating means 200 and the auxiliary heating means 300 from overheating, and if the temperature drops below a certain value, The auxiliary temperature sensor device detects and provides temperature information to the control means or auxiliary temperature sensor device and is transmitted to the heating means 200 or the auxiliary heating means 300. It is such that to increase the supply of the power, or by passing the signal from the control means and secondary control means to switch or auxiliary switch resumes the power supply kept in a certain variation of the temperature of the metallic nozzle body (100). Each of the heating means 200 and each of the auxiliary heating means 200 is individually powered by each of the power supply 500 and each of the auxiliary power supply 600 and the temperature is controlled. By controlling the temperature of the upper and lower left and right and left ends of the metal nozzle body 100 by such an operation, the entire metal nozzle body can be maintained evenly at a temperature higher than or equal to a predetermined value by the metal nozzle body 100 through the inlet 140. The molten metal of the high temperature liquid flowing in to prevent the cooling and solidification or sticking in advance and to maintain the surface quality of the metal sheet produced by being extruded from the outlet 150.

2 and 3, the metal nozzle for producing a metal plate material with a heating means according to the present invention is supplied with a metal molten metal of a high temperature liquid molten metal nozzle body 100 to be scanned and injected into the metal plate material and the metal nozzle It consists of a heating means 200 and auxiliary heating means 300 for transmitting heat to the main body 100, the heat insulating means 400 for blocking the external dissipation of heat. At this time, the metal nozzle body 100 is configured such that the upper nozzle body 110 and the lower nozzle body 120 can be separated from each other and coupled to each other, usually used in combination with each other and the metal nozzle body 100 as needed. After the maintenance, such as to remove the impurities in the interior by separating and to combine again to be able to reuse. When the upper nozzle body 110 and the lower nozzle body 120 are combined, the inlet 140 is formed at the rear end of the metal nozzle body 100 and the outlet 150 is formed at the front end. In addition, a plurality of internal grooves 130 having a predetermined depth are etched on the outer surfaces of the upper nozzle body 110 and the lower nozzle body 120. The heating means 200 is inserted into and installed in the plurality of built-in grooves 130 etched on the outer surfaces of the upper nozzle body 110 and the lower nozzle body 120, and each of the built-in grooves 130 and The heating means 200 preferably has a shape such as a maze of a predetermined pattern corresponding to each other. This is for maximizing the heat generating area delivered to the metal nozzle body 100 and increasing the thermal efficiency to even out the heat distribution over the entire metal nozzle body 100. The built-in groove 130 may consider the left and right lengths of the metal nozzle body 100 rather than integrally etching to be connected over the entire outer surface of each of the upper nozzle body 110 and the lower nozzle body 120. Each of the upper nozzle body 110 and the lower nozzle body 120 is separated into three or more portions to etch the internal grooves 130, and the heating means 200 is also arranged to be separated into three or more devices, each of the upper and lower portions, respectively. A separate power supply unit 500 is connected to each heating means 200 to supply power separately and to control the temperature of each part arbitrarily so that the entire portion of the metal nozzle body 100 maintains an even heat distribution. It is desirable to be able to.

The outer surface of the upper nozzle body 110 and the lower nozzle body 120, the heating means 200 is inserted into the built-in groove 130 is to be sealed by the heat insulating means 400, The heat insulating means 400 is composed of a heat insulating material 410 having a predetermined thickness and a fixing plate 420 for fixing the heat insulating material to the outer surface of the metal nozzle body 100. In this case, the heat insulator 410 may be manufactured in a thin plate shape and preferably uses a ceramic material having excellent heat insulating effect, so as to completely cover the entire outer surface of each of the upper nozzle body 110 and the lower nozzle body 120. It is good to make it in size and shape that you can. In addition, rather than directly fixing the heat insulating material 410 to the outer surface of the metal nozzle body 100 and directly exposed to the outside, the heat insulating material by the fixing plate 420 of the thin plate corresponding to the size and shape of the heat insulating material 410 The heat insulating means 400 is fastened to the metal nozzle body 100 in such a manner that the heat insulating material 410 and the fixing plate 420 are fastened together on the outer surface of the metal nozzle body 100 with a fastener such as a screw. Not only can it be firmly secured and protected by the heat insulator 410, but also the heat generated from the heating means 200 is transmitted only to the metal nozzle body 100 and prevents heat from dissipating to the outside. The heat loss can be minimized.

Auxiliary heating means insertion through holes 310 are formed at both left and right sides of the metal nozzle body 100 from the rear to the front direction, respectively, and the auxiliary heating means are inserted into the auxiliary heating means insertion holes 310 at both left and right sides thereof. 300) built-in installation. In this case, the auxiliary heating means insertion hole 310 may be formed in either the upper nozzle body 110 or the lower nozzle body 120, but the heat is raised upward so that the lower nozzle body 120 is formed in consideration of the lower nozzle body 120. It is preferable. The auxiliary heating means 300 built in the left and right side ends of the metal nozzle body 100 is operated and controlled by a separate auxiliary power supply 600, the installed on the outer surface of the metal nozzle body 100 As a separate means from the heating means 200, only the left and right side ends of the metal nozzle main body 100 can minimize the temperature deviation between the left and right ends. The auxiliary heating means 300, it is preferable to use a device such as a rod-type cartridge heater that is widely used for mold heating in the industry, nickel-chromium alloy or iron-chromium alloy among the cartridge heater made of various materials Cartridge heaters using heat transfer elements and thermally conductive electrical insulators are suitable.

4 is a sectional view of a heating means according to the present invention.

Referring to Figure 4, the heating means according to the present invention is composed of a thin plate-shaped heat transfer plate 210 and the electrical insulator 220 of the thin film surrounding the heat transfer plate.

The heat transfer plate 210 is made of a conductor having a constant electrical resistance, the heat generated by the electrical resistance when the current flows, the maximum operating temperature of about 1200 ℃ nickel-chromium alloy or iron-chromium alloy It is preferable to produce using. In addition, the heat transfer plate 210 is preferably made of a very thin plate shape of 1mm or less in thickness, which is a built-in groove of the outer surface of the metal nozzle body 100 is inserted into the heating means 200 consisting of the heat transfer plate 210 The heating means is etched by minimizing the etching depth of 130 to etch the internal groove 130 without affecting the durability of the metal nozzle body 100 even at the front end of the metal nozzle body 100 having a relatively thin thickness. By allowing it to be installed, it is possible to heat the entire part from the front end to the rear end of the metal nozzle body 100.

The electrical insulator 220 is configured to completely enclose the entire upper, lower, left, and right sides of the heat transfer plate 210, and it is preferable to form a very thin film using a material having good thermal conductivity but having the properties of an electrical conductor. Of course, the heat transfer plate 210 and the power supply unit 500 should be separately connected to the heat transfer plate 210 by passing through the electric insulator 220 with lead wires. By using the electric insulator 220 of the thin film to seal the heat conduction plate 210 to configure the heating means 200, even when the electric power is supplied to the heating means 200 to heat only the heat conduction plate 210. The current flows in the metal nozzle main body 100 in which the heating means 200 is only flowed, and heat generated in the heat transfer plate 210 is very well in the metal nozzle main body through the electric insulator 220 which is a thermal conductive film. Will be delivered.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the scope of the present invention.

100-metal nozzle body 110-upper nozzle body
120-Lower Nozzle Body 130-Internal Groove
140-Inlet 150-Outlet
200-Heating means 210-Heating plate
220-electrical insulator 300-auxiliary heating means
310-Auxiliary heating means insertion hole 400-Insulation means
410-Insulation 420-Mounting Plate
500-Power Supply 600-Auxiliary Power Supply

Claims (7)

The upper nozzle body and the lower nozzle body, which are formed on the outer surface of the internal grooves formed by etching in a predetermined pattern, are combined in the form of nozzles, so that the inlet portion through which the metal sheet material is melted and the metal sheet member are extruded. A metal nozzle body having an outlet portion formed therein;
A heating means formed of a thin plate-type heat transfer plate made of nickel-chromium alloy or iron-chromium alloy and a heat-conductive electric heating element which seals the heat transfer plate, and has a shape corresponding to the internal groove and is inserted into and installed in the internal groove;
Heat insulating means covering the heating means and attached to an outer surface of the metal nozzle body;
A power supply unit connected to the heating unit to supply power for heating;
Auxiliary heating means insertion through-holes which are formed toward the front from the rear of the left and right sides of the metal nozzle body;
Auxiliary heating means in the form of rod is installed in the auxiliary heating means insertion hole; And
Metal nozzle for producing a metal plate material with a heating means, characterized in that it comprises a secondary power supply for supplying power to the auxiliary heating means. delete The method of claim 1,
The heat insulating means is in close contact with the metal nozzle body and has a size and shape of a ceramic material that completely covers the outer surface of the metal nozzle body, the size and shape of the heat insulating material and the heat insulating material together with the heat insulating material of the metal nozzle body Metal nozzle for producing a metal plate material with a heating means, characterized in that consisting of a fixed plate which is fastened to the fastener on the outer surface. The method of claim 1,
The power supply unit is a temperature sensor device for measuring the temperature of the metal nozzle body, the control means for receiving the temperature information from the temperature sensor device to control the supply of power delivered to the heating means and the opening and closing transmitted by the control means Metal nozzle for producing a metal plate material with a heating means, characterized in that it further comprises a temperature control unit consisting of a switch for receiving a signal to open and close the supply of power. delete The method of claim 1,
The auxiliary heating means is a metal heater for producing a metal plate with a built-in heating means, characterized in that the cartridge heater consisting of a heat-conducting material of nickel-chromium alloy or iron-chromium alloy and a thermally conductive electrical insulator surrounding the heat-transfer body. Nozzle. The method of claim 1,
The auxiliary power supply unit is an auxiliary temperature sensor device for measuring the temperature of the metal nozzle body, the auxiliary control means for receiving the temperature information from the auxiliary temperature sensor device to control the supply of power delivered to the auxiliary heating means and the auxiliary control A metal nozzle for producing metal sheet material with a built-in heating means, further comprising an auxiliary temperature control unit configured to receive an open / close signal transmitted by the means and to open and close the supply of power.
KR1020100002822A 2010-01-12 2010-01-12 Metallic nozzle with built-in heaters for manufacturing metal plate KR101173288B1 (en)

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KR1020100002822A KR101173288B1 (en) 2010-01-12 2010-01-12 Metallic nozzle with built-in heaters for manufacturing metal plate

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KR101173288B1 true KR101173288B1 (en) 2012-08-13

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2543598A (en) * 2015-10-20 2017-04-26 Pyrotek Eng Mat Ltd Caster tip for a continuous casting process

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101243019B1 (en) * 2010-11-16 2013-03-12 주식회사 포스코 Nozzle Apparatus for Molten Steel
EP3415252B1 (en) * 2017-06-14 2020-02-19 Hydro Aluminium Rolled Products GmbH Caster tip arrangement for a continuous caster

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004528677A (en) * 2000-11-29 2004-09-16 サーモセラミックス インコーポレイテッド Resistance heater and its use
JP2006297476A (en) * 2004-11-24 2006-11-02 Nippon Steel Corp Heating device for pouring nozzle of molten metal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004528677A (en) * 2000-11-29 2004-09-16 サーモセラミックス インコーポレイテッド Resistance heater and its use
JP2006297476A (en) * 2004-11-24 2006-11-02 Nippon Steel Corp Heating device for pouring nozzle of molten metal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2543598A (en) * 2015-10-20 2017-04-26 Pyrotek Eng Mat Ltd Caster tip for a continuous casting process
GB2543517A (en) * 2015-10-20 2017-04-26 Pyrotek Eng Mat Ltd Caster tip for a continuous casting process
EP3159074A1 (en) * 2015-10-20 2017-04-26 Pyrotek Engineering Materials Limited Nozzle tip for a continuous strip caster

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