WO2012002630A1

WO2012002630A1 - Transfer apparatus for heating furnace

Info

Publication number: WO2012002630A1
Application number: PCT/KR2010/009417
Authority: WO
Inventors: 임갑수; 박영국; 조승한
Original assignee: 현대제철 주식회사
Priority date: 2010-06-29
Filing date: 2010-12-28
Publication date: 2012-01-05

Abstract

The present invention relates to a transfer apparatus for heating furnace. The transfer apparatus includes a skid pipe having a cooling passage in which cooling water is stored, a skid button unit coupled to the skid pipe to support an object to be worked, and a heat source supplying heat into the skid button unit. According to the present invention, since the skid button unit contacting the object to be worked does not drop below a predetermined temperature, a temperature variation between a portion of the object contacting the skid button unit and a portion of the object that does not contact the skid button unit may be reduced to improve the quality of the object.

Description

Furnace Feeding Equipment

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transfer apparatus for a furnace, and more particularly, to a transfer apparatus for a furnace that can prevent breakage due to high heat and suppress the temperature of a work object from being lowered.

General steel production consists of a steelmaking process to produce molten iron, a steelmaking process to remove impurities from molten iron, a regeneration process in which iron in a liquid state becomes a solid, and a rolling process in which iron is made of steel or wire.

The process of making pig iron, the first step in the process of making steel from iron ore, is called steelmaking, and the process of making steel from pig iron is called steelmaking.

The regeneration process is a process in which molten steel, which is a liquid ecology, is injected into a mold, and then passed through a continuous casting machine to be cooled and solidified to continuously form an intermediate material such as slab or bloom.

In this process, the bloom is converted into a billet (Billet) again through a rolling mill, and processed into a wire rod through a wire mill.

In addition, the slab is made of a hot rolled coil or a hot rolled steel sheet while being produced in a thick plate through a thick plate rolling mill or through a hot rolling device.

In order to perform a rolling process to the workpiece | work object of the intermediate | middle material to which the reproducing process was completed, the heating furnace which heats a workpiece | work object more than set temperature is provided.

The above technical configuration is a background art for helping understanding of the present invention, and does not mean a conventional technology well known in the art.

SUMMARY OF THE INVENTION An object of the present invention is to provide a conveying apparatus for a furnace that prevents damage due to high temperature and suppresses the temperature of a workpiece to be lowered.

The transfer apparatus for a furnace according to the present invention includes: a skid pipe unit having a cooling passage in which cooling water is stored; A skid button unit coupled to the skid pipe unit and supporting a work object; And a heat source unit for supplying heat to the skid button unit.

Preferably, the heat source portion is disposed between the skid pipe portion and the skid button portion.

More preferably, the heat source further comprises a heat insulating portion for suppressing the transfer of heat to the skid pipe portion, the heat insulating portion is disposed between the heat source portion and the skid pipe portion.

More preferably, it further comprises a fireproof material surrounding the outside of the skid pipe portion.

More preferably, the heat source portion, the heat wire portion for generating heat; And an insulating part surrounding the hot wire part.

According to the present invention, since the temperature of the skid button portion in contact with the workpiece is not lowered below a predetermined temperature, the temperature deviation from the portion not in contact with the portion in contact with the skid button portion can be reduced to improve the quality of the workpiece. .

In addition, according to the present invention, since the heat is transferred from the heat source portion to the skid pipe portion by the heat insulating portion, it is possible to improve the cooling efficiency of the skid pipe portion.

Further, according to the present invention, since the skid pipe part is surrounded by the refractory material, it is possible to prevent the skid pipe part from being deteriorated and damaged by external heat.

1 is a view schematically showing a conveying apparatus for a heating furnace according to an embodiment of the present invention.

2 is a cross-sectional view showing a transfer device for a heating furnace according to an embodiment of the present invention.

3 is an enlarged view of a portion of FIG. 2.

Figure 4 is a plan sectional view of the heat source portion of the transfer apparatus for a heating furnace according to an embodiment of the present invention.

5 is a view showing a state in which the heat source portion of the transfer apparatus for a heating furnace according to an embodiment of the present invention is stacked.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of a transfer apparatus for a heating furnace according to the present invention. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or custom. Therefore, the definitions of these terms should be made based on the contents throughout the specification.

1 is a view schematically showing a conveying apparatus for a furnace according to an embodiment of the present invention, Figure 2 is a cross-sectional view showing a conveying apparatus for a furnace according to an embodiment of the present invention, Figure 3 A part of 2 is enlarged. Figure 4 is a plan sectional view of the heat source portion of the transfer apparatus for a furnace according to an embodiment of the present invention, Figure 5 is a view showing a state in which the heat source portion of the transfer apparatus for a furnace according to the embodiment of the present invention is stacked.

1 to 5, the heating device for the conveying apparatus 1 according to an embodiment of the present invention is a skid pipe part 10, the skid button portion 20, the heat source portion 30, the heat insulating portion 40 ), Including the fireproof material (50).

If the work object S is supplied to a heating furnace (not shown) before performing a rolling process, the work object S is heated about 1200 degree | times, conveying the inside of a heating furnace by the conveying apparatus 1 for heating furnaces.

The heating apparatus conveying apparatus 1 comprises a fixed beam 2 and a conveying beam 3. The fixed beam 2 supports the workpiece S, and the transfer beam 3 is installed between the fixed beams 2 and transfers the workpiece S.

In the present embodiment, the fixed beam 2 having a relatively long contact time with the work object S will be described as an example of the transfer apparatus 1 for the heating furnace.

The skid pipe part 10 has a cooling passage 15 in which the cooling water W is stored. The upper surface of the skid pie portion 10 is provided with a pipe protrusion 11 protruding upward.

Skid button unit 20 is detachably coupled to the skid pipe unit 10, and supports the work object (S). The lower surface of the skid button unit 20 is provided with a button protrusion 21 protruding downward.

When the button protrusion 21 and the pipe protrusion 11 are arranged in a line, and the fixing pin 21 is inserted into and fixed to the through hole portions (not shown) formed therein, the skid button portion 20 and the skid pipe portion ( 10) are combined. On the contrary, when the skid button part 20 is to be separated from the skid pipe part 10, the fixing pin 21 may be removed.

Cooling water (W) circulated along the cooling passage (15) cools the skid pipe portion (10), but also lowers the temperature of the skid button portion (20) supporting the work object (S).

Therefore, when the temperature of the skid button portion 20 is lowered by the cooling water (W), the skid mark is generated on the work object (S). As a result, the quality of the work object S is deteriorated. In this embodiment, the heat source part 30 is configured to prevent the temperature decrease of the skid button part 20.

The heat source unit 30 supplies heat to the skid button unit 20 to suppress the skid button unit 20 from being lowered by the coolant W. Specifically, the heat source part 30 includes a heat wire part 31 that generates heat, and an insulation part 32 surrounding the heat wire part 31.

The hot wire unit 31 is connected to a power supply source and generates heat using power provided therefrom. The hot wire portion 31 may be nickel chromium hot wire.

The insulating part 32 transfers heat generated by the hot wire part 31 to the outside and cuts off an electrical connection between the hot wire part 31 and an external object. According to the present embodiment, the insulating part 32 is disposed to be in contact with the lower surface of the skid button part 20 to transfer heat generated by the hot wire part 31 to the skid button part 20. This insulation 32 may comprise mica and refractory fibers.

The plurality of heat source parts 30 may be stacked between the skid button part 20 and the heat insulating part 40. In addition, it may be made of a configuration connected to one, not a plurality.

The heat insulation part 40 suppresses the heat of the heat source part 30 to be transmitted to the skid pipe part 10. The heat source part 30 is disposed between the skid pipe part 10 and the skid button part 20. Therefore, the heat of the heat source unit 30 can be transmitted to the skid pipe unit 10 as well as the skid button unit 20, the heat insulating unit 40 blocks the heat transfer to the skid pipe unit 10.

According to the present embodiment, the heat insulating part 40 is disposed between the heat source part 30 and the skid pipe part 10 to block the heat of the heat source part 30 from being transferred to the skid pipe part 10. As a result, even though the heat source part 30 is provided, the skid pipe part 10 is sufficiently cooled by the cooling water W because heat is not transmitted.

The fireproof material 50 is formed to surround the outside of the skid pipe part 10. Thereby, the skid pipe part 10 can be prevented from being damaged by the heat inside a heating furnace. In addition, the heat transfer to the cooling water (W) can be blocked so that the skid pipe part 10 is cooled by the cooling water (W). The fireproof material 50 may be removed when the skid button unit 20 is to be separated from the skid pipe unit 10.

On the other hand, in order to reduce the cost for the transfer beam 3, which is not much in contact with the workpiece (S) relative to the fixed beam (2) the configuration of the heat source portion 30, the heat insulating portion 40 and the like mentioned above Can be omitted.

Looking at the operation of the transfer device for a heating furnace according to an embodiment of the present invention configured as described above are as follows.

Before the rolling process is started, a heating operation for heating the workpiece S to a target temperature is performed, whereby the workpiece S is heated to about 1200 degrees.

The workpiece S supplied into the heating furnace is supported by the fixed beam 2 and is transported in the exit direction of the heating furnace by the transfer beam 3 which is moved in the vertical and horizontal directions by the operation of the driving unit. .

At this time, since the skid pipe part 10 is provided with a cooling passage 15 through which the cooling water W is circulated, it is suppressed from being deformed or damaged by external heat.

In addition, since the heat is supplied to the skid button unit 20 by the heat source unit 30 while the work object S passes through the heating furnace, the skid button unit 20 of the fixed beam 2 or the transfer beam 3 is Cooling by the cooling water W can be blocked.

Therefore, since the temperature of the skid button portion 20 in contact with the work object (S) does not decrease below a predetermined temperature, the temperature deviation from the portion not in contact with the portion in contact with the skid button portion 20 is reduced, Can improve the quality.

Although the present invention has been described with reference to one embodiment shown in the drawings, this is merely exemplary, and various modifications and equivalent other embodiments are possible to those skilled in the art. Will understand.

In addition, the transfer apparatus for the furnace has been described as an example, but this is merely illustrative, the transfer apparatus of the present invention can be used in other products than the heating furnace.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

Claims

A skid pipe unit having a cooling passage in which cooling water is stored;

A skid button unit coupled to the skid pipe unit and supporting a work object; And

And a heat source unit for supplying heat to the skid button unit.
The method of claim 1,

And the heat source part is disposed between the skid pipe part and the skid button part.
The method of claim 2,

Further comprising a heat insulating portion for suppressing the heat of the heat source portion is transferred to the skid pipe portion,

The heat insulating unit is a transfer device for a heating furnace, characterized in that disposed between the heat source and the skid pipe.
The method of claim 3,

Transfer device for a furnace characterized in that it further comprises a refractory material surrounding the outside of the skid pipe portion.
The method of claim 2,

The heat source unit, a heat wire unit for generating heat; And

And an insulating part surrounding the hot wire part.