Exhaust rod for casting fused alumina zirconia brick, preparation method of exhaust rod and sand mold

Abstract

The invention discloses an exhaust rod for casting fused alumina zirconia bricks, a preparation method of the exhaust rod and a sand mold, and relates to the technical field of corundum pool wall brick processing. After the pool wall brick is cast, the exhaust rod is clamped by a long iron clamp and is inserted into the internal feed liquid through the insertion opening, the upper surface of the exhaust rod is exposed by 3-5cm, the exhaust rod is in a high-temperature environment in the riser, and the curing agent component is quickly combusted, so that the exhaust rod is surrounded by the liquid state of the feed liquid; and the exhaust at the exhaust rod is still smooth, the feed liquid in the riser has sufficient time to feed the brick body, and the volume weight of the obtained pool wall brick is 0.04 higher than that of the national standard, so that the quality of the brick is improved, and the labor intensity is also reduced.

Description

Technical Field

[0001] The invention relates to the technical field of processing corundum pool wall bricks, in particular to an exhaust rod for casting zirconium corundum fused bricks and a preparation method and a sand mold. Background Art

[0002] Fused zirconium corundum pool wall bricks are the main material for glass kiln masonry. The production of zirconium corundum bricks is to melt the raw materials at high temperature in an electric arc furnace, and then cast them in a sand mold. After about ten days of insulation annealing, the blank bricks of electric fused bricks are obtained out of the box.

[0003] When casting pool wall bricks, in order to obtain bricks with higher density, a steel chisel is inserted into the riser after casting to vent the riser. The reason is that the casting temperature of fused bricks is about 1800℃. After casting, the top of the riser will solidify quickly at room temperature. After solidification, the internal part will be in a vacuum state. At this time, the liquid in the riser cannot quickly compensate for the shrinkage of the brick body, so a steel chisel is inserted into the riser to break the solidification layer. Only then can the liquid in the riser compensate for the shrinkage of the brick body. Each time a pool wall brick is cast, this operation must be repeated, which takes a long time and the effect is not ideal. The liquid in the riser dissipates heat quickly at room temperature. When the liquid solidifies, it can no longer compensate for shrinkage. The insufficient bulk density of fused bricks means that the quality is unqualified. Therefore, it is necessary to improve the riser venting method after casting pool wall bricks, so as to increase the bulk density of pool wall bricks. Summary of the invention

[0004] The object of the present invention is to provide an exhaust rod for casting zirconium corundum fused bricks and a preparation method thereof, so as to solve the problem of exhaust difficulty in the existing casting process.

[0005] In addition, the present invention also provides a sand mold to solve the problem of low brick capacity during the pouring process of existing zirconium corundum pool wall bricks.

[0006] In order to solve the above problems, the present invention adopts the following technical means: The utility model relates to an exhaust rod for casting zirconium corundum fused bricks, wherein the matrix is ​​composed of ceramic fibers, high-alumina hollow balls and water glass.

[0007] Preferably, the particle size of the high-aluminum hollow sphere is 3 mm to 5 mm, and the weight ratio of the ceramic fiber to the high-aluminum hollow sphere is 1:1.

[0008] At the same time, a sand mold for casting zirconium corundum fused bricks includes an insulation box, the insulation box is filled with insulation sand, a model cavity is constructed in the insulation sand, the inner wall of the model cavity is covered with a molding sand layer, and the top surface of the insulation box is constructed with an insertion port, and the aforementioned exhaust rod for casting zirconium corundum fused bricks is inserted into the insertion port.

[0009] Preferably, the exhaust rod has a length of 700-900 mm.

[0010] Furthermore, the exhaust rod extends out of the top of the mold cavity to a height of 300-500 mm.

[0011] Furthermore, the thermal insulation box is a steel structure, the inner wall of the thermal insulation box is configured with a cavity, and the cavity covers the side walls and the bottom wall of the thermal insulation box.

[0012] Furthermore, the cavity is located inside the bottom wall of the heat preservation box and is provided with a support column, the support column is vertically arranged, and both ends of the support column are fixedly abutted against the upper and lower surfaces of the cavity respectively.

[0013] Furthermore, a liquid inlet pipe communicating with the cavity is installed on the upper part of the side wall of the thermal insulation box, and a liquid discharge pipe communicating with the cavity is provided on the bottom surface of the thermal insulation box.

[0014] In addition, a method for preparing the aforementioned exhaust rod for casting zirconium corundum fused bricks uses foam to prepare an exhaust rod mold, the exhaust rod mold has a diameter of 50~80mm and a length of 800~1000mm; ceramic fiber and high-alumina hollow balls are evenly mixed with water glass, and a curing agent is added; the mixed material is filled in the exhaust rod mold, cured for 30 minutes, the solidified material is taken out, and cured at room temperature for 24 hours.

[0015] Preferably, the curing agent is a mixture of ethylene glycol diacetate and ethylene glycol.

[0016] During use, the present invention has the following beneficial effects: After the pool wall bricks are cast, use long pliers to clamp the exhaust rod and insert it into the internal liquid through the insertion port, with three to five centimeters exposed above. The exhaust rod is in the high temperature environment in the riser, and the curing agent components burn quickly, ensuring that the exhaust rod is surrounded by liquid. When the liquid on the riser surface solidifies, the exhaust at the exhaust rod is still unobstructed, and the liquid in the riser has sufficient time to compensate for the shrinkage of the brick body. The resulting pool wall brick has a bulk density that is 0.04 higher than the national standard, which not only improves the quality of the bricks but also reduces labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the sand mold of the present invention.

[0018] Among them, 1-insulation box, 2-insulation sand, 3-model cavity, 4-molding sand layer, 5-insertion port, 6-exhaust rod, 7-cavity, 8-support column, 9-liquid inlet pipe, and 10-liquid discharge pipe. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Example 1 Please refer to Figure 1As shown, an exhaust rod for casting zirconium corundum fused bricks, the matrix of which is composed of ceramic fibers, high-alumina hollow balls and water glass.

[0026] Preferably, the particle size of the high-aluminum hollow sphere is 3 mm, and the weight ratio of the ceramic fiber to the high-aluminum hollow sphere is 1:1.

[0027] At the same time, a sand mold for casting zirconium corundum fused bricks includes an insulation box 1, the insulation box 1 is filled with insulation sand 2, a model cavity 3 is constructed in the insulation sand 2, the inner wall of the model cavity 3 is covered with a molding sand layer 4, and the top surface of the insulation box 1 is constructed with an insertion port 5, and the insertion port 5 is inserted with the aforementioned exhaust rod 6 for casting zirconium corundum fused bricks.

[0028] Preferably, the exhaust rod 6 has a length of 700 mm.

[0029] Furthermore, the exhaust rod 6 extends out of the top of the mold cavity 3 to a height of 300 mm.

[0030] Furthermore, the heat preservation box 1 is a steel structure, and the inner wall of the heat preservation box 1 is configured with a cavity 7 , and the cavity 7 covers the side walls and the bottom wall of the heat preservation box 1 .

[0031] Furthermore, the cavity 7 is located in the bottom wall of the heat preservation box 1 and is structured with a support column 8 , the support column 8 is vertically arranged, and both ends of the support column 8 are fixedly abutted against the upper and lower surfaces of the cavity 7 respectively.

[0032] Furthermore, a liquid inlet pipe 9 communicating with the cavity 7 is installed on the upper part of the side wall of the thermal insulation box 1 , and a liquid discharge pipe 10 communicating with the cavity 7 is provided on the bottom surface of the thermal insulation box 1 .

[0033] In addition, a preparation method of the aforementioned exhaust rod 6 for casting zirconium corundum fused bricks uses foam to prepare an exhaust rod 6 mold, the diameter of the exhaust rod 6 mold is 50 mm and the length is 800 mm; ceramic fiber and high-alumina hollow balls are mixed evenly with water glass, and a curing agent is added; the mixed material is filled in the exhaust rod 6 mold, cured for 30 minutes, the solidified material is taken out, and cured at room temperature for 24 hours.

[0034] Preferably, the curing agent is a mixture of ethylene glycol diacetate and ethylene glycol.

[0035] Example 2 An exhaust rod 6 for casting zirconium corundum fused bricks, the matrix of which is composed of ceramic fibers, high-alumina hollow balls and water glass.

[0036] Preferably, the particle size of the high-aluminum hollow sphere is 5 mm, and the weight ratio of the ceramic fiber to the high-aluminum hollow sphere is 1:1.

[0037] At the same time, a sand mold for casting zirconium corundum fused bricks includes an insulation box 1, the insulation box 1 is filled with insulation sand 2, a model cavity 3 is constructed in the insulation sand 2, the inner wall of the model cavity 3 is covered with a molding sand layer 4, and the top surface of the insulation box 1 is constructed with an insertion port 5, and the insertion port 5 is inserted with the aforementioned exhaust rod 6 for casting zirconium corundum fused bricks.

[0038] Preferably, the exhaust rod 6 has a length of 900 mm.

[0039] Furthermore, the exhaust rod 6 extends out of the top of the mold cavity 3 to a height of 500 mm.

[0040] Furthermore, the heat preservation box 1 is a steel structure, and the inner wall of the heat preservation box 1 is configured with a cavity 7 , and the cavity 7 covers the side walls and the bottom wall of the heat preservation box 1 .

[0041] Furthermore, the cavity 7 is located in the bottom wall of the heat preservation box 1 and is structured with a support column 8 , the support column 8 is vertically arranged, and both ends of the support column 8 are fixedly abutted against the upper and lower surfaces of the cavity 7 respectively.

[0042] Furthermore, a liquid inlet pipe 9 communicating with the cavity 7 is installed on the upper part of the side wall of the thermal insulation box 1 , and a liquid discharge pipe 10 communicating with the cavity 7 is provided on the bottom surface of the thermal insulation box 1 .

[0043] In addition, a preparation method of the aforementioned exhaust rod 6 for casting zirconium corundum fused bricks, using foam to prepare the exhaust rod 6 mold, the diameter of the exhaust rod 6 mold is 80mm, and the length is 1000mm; after mixing the ceramic fiber and high-alumina hollow balls evenly with water glass, adding a curing agent; filling the mixed material into the exhaust rod 6 mold, curing for 30 minutes, taking out the solidified material, and curing at room temperature for 24 hours.

[0044] Preferably, the curing agent is a mixture of ethylene glycol diacetate and ethylene glycol.

[0045] Example 3 An exhaust rod 6 for casting zirconium corundum fused bricks, the matrix of which is composed of ceramic fibers, high-alumina hollow balls and water glass.

[0046] Preferably, the particle size of the high-aluminum hollow sphere is 4 mm, and the weight ratio of the ceramic fiber to the high-aluminum hollow sphere is 1:1.

[0047] At the same time, a sand mold for casting zirconium corundum fused bricks includes an insulation box 1, the insulation box 1 is filled with insulation sand 2, a model cavity 3 is constructed in the insulation sand 2, the inner wall of the model cavity 3 is covered with a molding sand layer 4, and the top surface of the insulation box 1 is constructed with an insertion port 5, and the insertion port 5 is inserted with the aforementioned exhaust rod 6 for casting zirconium corundum fused bricks.

[0048] Preferably, the exhaust rod 6 has a length of 800 mm.

[0049] Furthermore, the exhaust rod 6 extends out of the top of the mold cavity 3 to a height of 300 mm.

[0050] Furthermore, the heat preservation box 1 is a steel structure, and the inner wall of the heat preservation box 1 is configured with a cavity 7 , and the cavity 7 covers the side walls and the bottom wall of the heat preservation box 1 .

[0051] Furthermore, the cavity 7 is located in the bottom wall of the heat preservation box 1 and is structured with a support column 8 , the support column 8 is vertically arranged, and both ends of the support column 8 are fixedly abutted against the upper and lower surfaces of the cavity 7 respectively.

[0052] Furthermore, a liquid inlet pipe 9 communicating with the cavity 7 is installed on the upper part of the side wall of the thermal insulation box 1 , and a liquid discharge pipe 10 communicating with the cavity 7 is provided on the bottom surface of the thermal insulation box 1 .

[0053] In addition, a method for preparing the exhaust rod 6 for casting zirconium corundum fused bricks mentioned above uses foam to prepare the exhaust rod 6 mold, the diameter of the exhaust rod 6 mold is 50 mm and the length is 900 mm; after mixing the ceramic fiber and high-alumina hollow balls evenly with water glass, a curing agent is added; the mixed material is filled in the exhaust rod 6 mold, cured for 30 minutes, the cured product is taken out, and cured at room temperature for 24 hours.

[0054] Preferably, the curing agent is a mixture of ethylene glycol diacetate and ethylene glycol.

[0055] In this way, after the pool wall bricks are cast, the exhaust rod 6 is clamped with a long iron pliers and inserted into the internal liquid through the insertion port 5, with three to five centimeters exposed above. The exhaust rod 6 is in the high temperature environment in the riser, and the curing agent components burn quickly, ensuring that the exhaust rod 6 is surrounded by liquid liquid. When the liquid on the riser surface solidifies, the exhaust at the exhaust rod 6 is still unobstructed, and the liquid in the riser has sufficient time to compensate for the shrinkage of the brick body. The obtained pool wall brick has a bulk density that is 0.04 higher than the national standard, which not only improves the quality of the bricks but also reduces labor intensity.

[0056] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An exhaust rod for casting zirconium corundum fused bricks, characterized in that: The matrix is ​​composed of ceramic fiber, high-aluminum hollow sphere and water glass.

2. The exhaust rod for casting zirconium corundum fused bricks according to claim 1, characterized in that: The particle size of the high-aluminum hollow sphere is 3mm-5mm, and the weight ratio of the ceramic fiber to the high-aluminum hollow sphere is 1:

1.

3. A sand mold for casting zirconium corundum fused bricks, characterized in that: The invention comprises an insulation box (1), wherein the insulation box (1) is filled with insulation sand (2), a mold cavity (3) is constructed in the insulation sand (2), the inner wall of the mold cavity (3) is covered with a molding sand layer (4), and the top surface of the insulation box (1) is constructed with an insertion port (5), and the exhaust rod (6) for casting zirconium corundum fused bricks according to claim 1 or 2 is inserted into the insertion port (5).

4. A sand mold for casting zirconium corundum fused bricks according to claim 3, characterized in that: The exhaust rod (6) has a length of 700-900 mm.

5. A sand mold for casting zirconium corundum fused bricks according to claim 3, characterized in that: The exhaust rod (6) extends out of the top of the model cavity (3) to a height of 300 to 500 mm.

6. A sand mold for casting zirconium corundum fused bricks according to claim 3, characterized in that: The heat preservation box (1) is a steel structure, and the inner wall of the heat preservation box (1) is provided with a cavity (7), and the cavity (7) covers the side wall and the bottom wall of the heat preservation box (1).

7. A sand mold for casting zirconium corundum fused bricks according to claim 6, characterized in that: The cavity (7) is located inside the bottom wall of the heat preservation box (1) and is provided with a support column (8), the support column (8) being arranged vertically, and the two ends of the support column (8) are respectively fixedly abutted against the upper and lower surfaces of the cavity (7).

8. A sand mold for casting zirconium corundum fused bricks according to claim 6, characterized in that: A liquid inlet pipe (9) communicating with the cavity (7) is installed on the upper part of the side wall of the thermal insulation box (1), and a liquid discharge pipe (10) communicating with the cavity (7) is provided on the bottom surface of the thermal insulation box (1).

9. A method for preparing an exhaust rod (6) for casting zirconium corundum fused bricks according to claim 1 or 2, characterized in that: A mold for an exhaust rod (6) is prepared using foam, wherein the diameter of the mold for the exhaust rod (6) is 50 to 80 mm and the length is 800 to 1000 mm; ceramic fibers and high-aluminum hollow balls are uniformly mixed using water glass, and a curing agent is added; the mixed material is filled into the mold for the exhaust rod (6), cured for 30 minutes, the cured product is taken out, and cured at room temperature for 24 hours.

10. The preparation method according to claim 8, characterized in that: The curing agent is a mixture of ethylene glycol diacetate and ethylene glycol.

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