KR100321034B1 - Anchor for supporting castable and the method of manufacturing thereof - Google Patents

Abstract

PURPOSE: An anchor for supporting castable in which anchor does not cause cracking of castable even under the severe temperature changing environment so that castable is adhered onto the structure in the more stable state, and a manufacturing method of the anchor for supporting castable are provided. CONSTITUTION: In an anchor which is fixed to a structure by welding to support castable constructed on the structure, the anchor for supporting the castable comprises a vinyl coating layer that is coated on the outer surface of an anchor body with vinyl; and a castable coating layer that is coated on the outer surface of the vinyl coating layer with refractory powder. In an anchor which is fixed to a structure by welding to support castable constructed on the structure, the anchor for supporting the castable comprises a vinyl refractory layer that is coated on the outer surface of an anchor body with a mixture of vinyl and refractory powder. In a method for manufacturing an anchor(10,20) which is fixed to a structure by welding to support castable constructed on the structure, the manufacturing method of the anchor for supporting castable comprises a vinyl coating layer forming step of coating vinyl on the outer surface of an anchor body(12); and a castable coating layer forming step of coating castable powder(110) on the outer surface of the vinyl coating layer(14,16). In a method for manufacturing an anchor(10,20) which is fixed to a structure by welding to support castable constructed on the structure, the manufacturing method of the anchor for supporting castable comprises a vinyl refractory coating layer forming step of coating a mixture of vinyl and refractory powder(110) on the outer surface of the anchor body(12).

Description

Anchor for supporting castable and its method of manufacturing

The present invention relates to an anchor that is fixed to the structure to support it so that the amorphous refractory is firmly attached to the structure, and more particularly, when the amorphous refractory is used in a high temperature environment, the amorphous refractory and the anchor are mutually An amorphous refractory support anchor and a method for manufacturing the same which can be prevented from being broken by cracking in a refractory due to having a different coefficient of thermal expansion.

In general, amorphous refractory materials are widely used throughout the industry. In particular, castables exhibit excellent durability even in structures exposed to high temperature environments such as steelmaking, smelting, and rolling mills.

Typically, such amorphous refractory can take advantage of such benefits if it remains more fully attached to the structure, and thus, in the art, various types of anchors can be utilized to improve the adhesion of the amorphous refractory to the structure. Trying hard.

A conventional refractory support anchor used in the prior art, as shown in Figure 1, divided into a V-shape (see Figures 1a to 1d) and Y-shaped (see Figures 1e to 1h) by its approximate shape, forming an anchor The material is divided into round bar type (see FIGS. 1A, 1C, 1E, and 1G) and plate type (see FIGS. 1B, 1D, 1F, and 1H) according to whether the rod or plate is used. , 1b, 1e and 1f) and curved (see FIGS. 1C, 1D, 1G and 1H).

That is, the conventional anchor has tried to improve the adhesion by changing its shape in the direction of increasing the contact area with the amorphous refractory.

However, in such a conventional anchor, by changing the shape of the anchor to increase the contact area with the amorphous refractory, it is possible to improve the adhesion to each other to increase the bearing capacity to an appropriate level, but the refractory is poor in the alternating temperature and cooling When used in the environment, there is still a problem that cracks occur in the refractory portion in contact with the anchor due to the difference in thermal expansion coefficient between the amorphous refractory and the anchor fixed to the structure, and these cracks grow and eventually lose the refractory. It was.

To illustrate this problem in more detail, a cross-sectional view of fixing the anchor 2 to the surface of the structure 1 by welding or the like and constructing the refractory 3 in the state is shown in FIG. 2A. In this state, when the refractory material 3 is used in a severe temperature change environment, the anchor 2 made of steel usually has a physical property significantly higher than that of the refractory material 3, and thus the use of high temperature Under the conditions, the expansion length of the anchor 2 becomes larger than the expansion length of the surrounding refractory 3, so that the stress caused by the difference in expansion length is generated, so that such stress is in contact with the anchor 2, usually the tip of the rib. Cracks 4 are generated in the side refractory material 3 (see FIG. 2B), and these cracks 4 continue to grow to the outer surface of the refractory material 3 as shown in FIG. 2C during repeated heating and cooling processes. As a result, as shown in FIG. 2D, the anchor 2 is exposed to the outside and the high temperature oxidation proceeds rapidly. As a result, the anchor 2 loses the bearing capacity of the refractory 3 and is refractory to a small external force. This easy It is causing a serious problem of falling out.

The present invention is to solve such a conventional problem, the anchor, which is a medium for attaching the amorphous refractory to the structure does not cause cracks in the refractory even in a severe temperature change environment, so that the refractory is attached to the structure in a more stable state It is an object of the present invention to provide an amorphous refractory support anchor and a method of manufacturing the same.

1a to 1h is an external view showing a conventional conventional anchor

Figure 2a to 2d is a problem derived showing the broken state of the refractory supported by the anchor in the prior art

Figure 3a, 3b and 4 is a cross-sectional view showing an anchor for supporting a refractory in accordance with the present invention

Figure 5 is a cross-sectional view showing another embodiment of the amorphous refractory support anchor according to the present invention

6A to 6C are explanatory diagrams for explaining a method for manufacturing an amorphous refractory support anchor according to the present invention.

Explanation of symbols on the main parts of the drawings

10,20,30,40 ... anchor

14,24 ... vinyl coating layer

16,26 ... refractory coating layer

34 ... vinyl tape layer

44 ... vinyl refractory coating layer

The present invention as a technical configuration for achieving the above object, in the anchor is fixed to the structure by welding or the like to support the irregular refractory to be constructed on the structure, to form a vinyl coating layer coated with vinyl on the outer surface of the anchor body And, by providing a refractory support for anchors, characterized in that to form a refractory coating layer coated with a refractory powder on the outer surface of the vinyl coating layer.

In addition, the present invention is to provide an amorphous refractory support anchor, characterized in that to form a vinyl refractory layer coated on the outer surface of the anchor body mixed with vinyl and refractory powder.

In addition, the present invention is a method of manufacturing an anchor fixed to the structure by welding or the like to support the irregular refractory to be constructed on the structure, the vinyl coating layer forming step of coating the vinyl on the outer surface of the anchor body; and the vinyl coating layer By forming a refractory coating layer forming a refractory coating layer coating the refractory powder on the outer surface of the by providing a method for producing an anchor for the refractory support of the amorphous.

In another aspect, the present invention is to provide a method for producing an amorphous refractory support anchor characterized in that the vinyl refractory coating layer is formed by coating the outer surface of the anchor body in a mixed state of vinyl and refractory powder.

Hereinafter, the present invention will be described in more detail.

First, a structure of an anchor for supporting an indefinite refractory according to the present invention will be described with reference to FIGS. 3 to 5.

Anchor 10, 20 of the present invention shown in Figure 3 is a vinyl coating layer 14 coated with vinyl on the outer surface of any one anchor body 12, 22 of various shapes as shown in Figure 1 ) 24, and the refractory coating layers 16 and 26 coated with amorphous refractory powder are formed on the outer surfaces of the vinyl coating layers 14 and 24.

Vinyls forming the vinyl coating layers 14 and 24 may be polyethylene, polypropylene, and the like, which are commonly used, and remain at a solid state at room temperature before the temperature rises (of course, If the anchor is a material that can be oxidized, melted or shrunk at a very low temperature compared to the high temperature of the environment in which it is used, it is within the scope of the present invention.

It is preferable that the thickness of the vinyl coating layers 14 and 24 does not exceed the length of the maximum cross section of the anchor. When the thickness of the vinyl coating layer is excessively large, excessive oxidation of vinyl occurs at a high temperature, and thus the adhesion between the anchor and the refractory is increased. It is because it falls rapidly and is not preferable.

The refractory coating layers 16 and 26 belong to the scope of the present invention as long as they consist of conventionally used amorphous refractory powder, and more preferably, if the anchor is a material of the same component as the amorphous refractory used. That is, if the main component of the amorphous refractory base material is alumina (Al ₂ O ₃ ), the main component of the powder constituting the refractory coating layer is also composed of alumina. It is good to be made of magnesia.

It is preferable that the thickness of the refractory coating layers 16 and 26 does not exceed ½ of the maximum cross-sectional length of the anchor, which is not preferable when the refractory coating layer is dropped during the manufacture and transportation of the anchor when the thickness of the refractory coating layer is excessively large. This is because the phenomenon is not concerned.

In addition, the diameter of the refractory powder used to form the refractory coating layers 16 and 26 is preferably 100 mesh or less, and when the refractory powder becomes excessively large, the refractory coating layer is dropped. This is because problems can arise.

In addition, it is preferable that the vinyl coating layers 14 and 24 and the refractory coating layers 16 and 26 of the anchors 10 and 20 of the present invention are not formed at the welded portion of the structure. This is because when the anchor is welded to the structure, the vinyl coating layer and the refractory coating layer are mixed with the welding portion, causing problems such as deterioration of the mechanical strength of the welding portion.

The anchor 30 shown in FIG. 4 shows, as a variant, that the vinyl coating layers 14 and 24 shown in FIG. 3 are replaced with a vinyl tape layer 34 wound around a vinyl tape. It forms a vinyl tape layer 34 on the outer surface of the anchor body 32, the refractory coating layer 36 made of a refractory powder is formed on the outer surface of the vinyl tape layer 34. Of course, the vinyl tape layer 34 is melted through a heating furnace or the like before the refractory coating layer 36 is formed on its outer surface, and consequently has the same configuration as the vinyl coating layers 14 and 24 described above. .

Therefore, the detailed description of the components, thickness, size, etc. of the vinyl tape layer 34 and the refractory coating layer 36 is replaced with the description of the above-described anchors 10 and 20.

The anchor 40 shown in Figure 5 is made of a different structure than the above-described anchor, which is coated with a vinyl refractory coating layer 44 formed on the outer surface of the anchor body 42 in a mixture of vinyls and refractory powder It can be seen that.

Of course, the components and sizes of vinyls and refractory powders used in the construction of the anchor 40 are similar to those of the other anchors described above, but the thickness of the vinyl refractory coating layer 44 is not particularly limited, but as described above. Dropping from the anchor body 42 and set to more effectively perform the operation described later, it is natural that all these categories are included in the technical spirit of the present invention.

In the case of using the anchors 10, 20, 30, and 40 to construct the refractory to the structure, the anchor is fixed to the structure by welding as in the prior art, and then the refractory may be constructed. Since the refractory powder is fixed on the outer surface, the bonding is performed by chemical bonding by the binding material inside the fixed amorphous refractory material mixed with the anchor and water, so that the adhesion is remarkably improved, and thus the irregular refractory by the anchor It is possible to remarkably improve the bearing capacity irrespective of the shape of the anchor.

In addition, when the refractory material thus constructed is used in an environment where temperature changes are severe, vinyls absorb the thermal expansion of the anchor, thereby preventing stress from forming in the refractory by expansion of the anchor, so that the refractory does not generate cracks and the life is remarkable. Longer. That is, when used at high temperatures, the vinyl coating layers 14 and 26, the vinyl tape layer 34, or the vinyl refractory coating layer 44, which are formed of vinyls, are conducted through the moisture or micropores contained in the construction and the thermal energy conducted through the anchor body. It is oxidized or contracted by the microscopic spaces at the boundary between the outer surface of the anchor and the amorphous refractory. Therefore, this space is to provide an expansion space when the anchor is expanded by heat to prevent stressing the amorphous refractory even if the anchor is expanded. That is, the crack which arises in amorphous refractory by anchor expansion is prevented.

In addition, when the vinyl coating layers 14 and 26, the vinyl tape layer 34, or the vinyl refractory coating layer 44 are oxidized, some remain while forming a thin film on the outer surface of the anchor, resulting in anchors at high temperatures. It also has the effect of preventing oxidation.

Next, a method of manufacturing the amorphous refractory support anchor according to the present invention will be described with reference to FIG.

First, the manufacturing method of the anchors 10, 20, 30 shown in FIG. 3 and FIG. 4 is demonstrated, and the manufacturing method of the anchor 40 shown in FIG. 5 is mentioned later.

These anchors are manufactured by coating vinyl on the outer surface of the anchor body, and coating the refractory powder on the outer surface of the coated vinyl.

Coating the vinyl, as shown in Figure 6a, put the vinyl in the container 102, the tungsten filament 101 is embedded, and when heated to a certain temperature, the vinyl is melted into a highly viscous vinyl melt (103) In this state, when the anchors 10 and 20 are deposited and taken out, an outer surface of the anchors 10 and 20 is formed with a vinyl coating layer 14 and 16 having an appropriate thickness, and also shown in FIG. 6B. As described above, after the vinyl tape is wound around the surface of the anchor body 32 to prepare the vinyl tape layer 34, the tungsten filament 101 is embedded and passed through the heating body 106 maintained at a constant temperature. The vinyl tape layer 34 is melted to form a vinyl coating layer in the same form as the vinyl coating layers 14 and 24 of the anchors 10 and 20.

When the refractory powder delivered by hot air is projected on the outer surface of the vinyl coating layer at a suitable speed before the process of curing the primary vinyl coating layer in the air in the state where the vinyl coating layer is formed, the refractory powder is a vinyl coating layer. Refractory coating layer is formed to be coated in a suitable thickness. That is, as shown in FIG. 6C, after the air transfer pipe 108 having the tungsten filament 101 is built in the proper length in the longitudinal direction, the air transfer pipe 108 may be pressurized to transfer air to one side of the air transfer pipe 108. By installing the old blower 107, the heated air can be injected to the other side at an appropriate temperature, and also the refractory powder 110 at an appropriate portion of the air transfer pipe 108, preferably at a portion close to the blower 107 side. The hopper 120 accommodated) is connected to the powder input pipe 111 so that the refractory powder may be supplied to the air transfer pipe 108 by a predetermined amount. Therefore, the preheated air is mixed with the refractory powder to form a flow 109 along the air conveying pipe 108, and when such a flow 109 is discharged through the open end of the air conveying pipe 108, The anchor body coated with vinyl is positioned, whereby the refractory powder can be brought into contact with the outer surface of the vinyl coating layer which has not yet been cured, and the refractory powder layer thus formed is not easily detached from the anchor body.

Therefore, the double coated anchor having a vinyl coating layer and a refractory coating layer by the above process can be produced.

Next, the method of manufacturing the anchor 40 forming the vinyl refractory coating layer 44 coated with a mixture of vinyls and refractory powders will be described. Put vinyl and refractory powder into a container with tungsten filament and heat it. More preferably, the container is equipped with a stirrer capable of stirring such vinyls and refractory powder, and thus, the vinyl solution can be maintained in the container mixed with the refractory powder, and the anchor body is in such a mixed solution. When the 42 is deposited and then taken out, the vinyl refractory coating layer 44 coated in a state in which vinyls and refractory powders are mixed may be formed on the outer surface of the anchor body 42 at an appropriate thickness.

As described above, according to the amorphous refractory support anchor according to the present invention and a method for manufacturing the same, a vinyl refractory layer is formed on the outer surface of the anchor body in a double or a vinyl refractory coating is coated with a mixture of vinyl and refractory powder When the coating layer is used to support the amorphous refractory material at a high temperature, the thermal expansion space of the anchor body is formed by forming a fine space between the anchor body and the refractory while the vinyl component is melted by the heat transferred through the anchor body. It provides a bar, which solves the problem that the anchor causes stresses in the amorphous refractory material as it expands due to thermal expansion, causing cracks, and thus the support state of the amorphous refractory material by the anchor can be always maintained in a stable state.

In addition, the vinyl is surrounded on the anchor body while melting on the outer surface of the anchor body, and also has an excellent effect of preventing the anchor body from being oxidized by high temperature.

Claims (8)

In the anchor fixed to the structure by welding or the like to support the irregular refractory to be constructed in the structure, An anchor for supporting a refractory as claimed in claim 1, wherein a vinyl coating layer coated with vinyl is formed on the outer surface of the anchor body, and a refractory coating layer coated with a refractory powder is formed on the outer surface of the vinyl coating layer. In the anchor fixed to the structure by welding or the like to support the irregular refractory to be constructed in the structure, An anchor for supporting an amorphous refractory, characterized in that to form a vinyl refractory layer coated with a mixture of vinyl and refractory powder on the outer surface of the anchor body. In the manufacturing method of the anchor fixed to the structure by welding or the like to support the irregular refractory to be constructed in the structure, Vinyl coating layer forming step of coating the vinyl on the outer surface of the anchor body; And, Forming a refractory coating layer for coating the refractory powder on the outer surface of the vinyl coating layer; manufacturing method of the amorphous refractory support anchor comprising a. The method of claim 3, wherein the vinyl coating layer forming step is characterized in that the vinyl is melted in a container equipped with tungsten filament to be heated to a predetermined temperature, by depositing the anchor body on the molten vinyl, and then taken out. Method for producing an amorphous refractory support anchor. The method of claim 3, wherein the vinyl coating layer forming step, the vinyl body is maintained for a predetermined time while the tape is made of vinyl-like wound on the outer surface of the heating body equipped with tungsten filament to be heated at a constant temperature Method for producing an amorphous refractory support anchor, characterized in that made by melting. The method of claim 3, wherein the refractory coating layer forming step, the anchor body is coated with a vinyl on the outlet side of the air transfer pipe equipped with a blower to be able to transfer the refractory powder at a suitable pressure in a state that the vinyl is not cured Method for producing an amorphous refractory support anchor, characterized in that made by exposure. In the manufacturing method of the anchor fixed to the structure by welding or the like to support the irregular refractory to be constructed in the structure, A method of manufacturing an amorphous refractory support anchor, characterized in that to form a vinyl refractory coating layer by coating the outer surface of the anchor body in a mixed state of vinyl and refractory powder. The method of claim 7, wherein the vinyl and the refractory powder is heated to a constant temperature in a container equipped with a tungsten filament to be heated to a constant temperature to melt the vinyl, and anchored to the mixed solution of the molten vinyl and refractory powder Method of producing an amorphous refractory support anchor characterized in that the vinyl refractory coating layer is made by depositing the body and then taking it out.

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