JP3540312B1 - Container and container manufacturing method - Google Patents

Abstract

An object of the present invention is to provide a portable container capable of supplying a stable molten metal.
A molten metal, such as a molten aluminum alloy, can be transported from a factory producing molten metal to a factory using the molten metal while containing the molten metal, and the molten metal can be supplied to a point of use by a pressure difference. The vessel includes a frame 1a, and a lining 2 provided inside the frame and at least a part of which is provided with a flow path 9 of molten metal surrounded by a pipe 34 for regulating gas flow. By adopting such a configuration, even if a crack or the like occurs in the lining 2 of the container, the flow of gas is blocked by the pipe 34, and the supply state of the molten metal is stabilized.
[Selection diagram] Fig. 1

Description

[0001]
[Prior art]
In a factory where aluminum is formed using a large number of die-casting machines, an aluminum material is often supplied not only inside the factory but also outside the factory. In this case, a container containing aluminum in a molten state is transported from a factory on the material supply side to a factory on the molding side, and the molten material is supplied to each die-casting machine ( For example, see Patent Document 1).
[0002]
[Patent Document 1]
Japanese Utility Model Laid-Open No. 3-31063 (FIG. 1).
[0003]
[Problems to be solved by the invention]
In a factory where aluminum is formed using a large number of die-casting machines, an aluminum material is often supplied not only inside the factory but also outside the factory. In this case, a container containing aluminum in a molten state is transported from a factory on the material supply side to a factory on the molding side, and the molten material is supplied to each die-casting machine ( For example, Reference 1: Japanese Utility Model Laid-Open No. 3-31063 (FIG. 1).
[0004]
The present inventors have proposed a technique for supplying a material from such a container to the die cast machine using a pressure difference. That is, in this technique, the inside of the container is pressurized and the molten metal material in the container is led out through a pipe introduced into the container.
[0005]
By the way, since such a container is required to have heat insulation and fire resistance, for example, a lining is provided inside an iron frame. The present inventor has developed a technique for improving the heat retention of the molten metal flowing through the flow path by providing a flow path for leading out the molten metal in the vessel to the outside in the lining. When the heat retaining property of the molten metal in the flow path is enhanced in this way, the molten metal is prevented from solidifying in the flow path, and there is an effect that the flow path is not clogged.
[0006]
However, the lining in the container causes cracks due to thermal expansion or mechanical shock, and when the cracks reach the flow path from the space of the container, the gas for pressurization directly flows into the flow path through the cracked portion, There is a problem that supply becomes unstable. In addition, there is a problem that the molten metal in a mixed gas state blows out from the pipe to the outside, and the high-temperature molten metal scatters around.
[0007]
A configuration is also conceivable in which the stalk is hung from the upper surface of the container to the molten metal reservoir, and the stalk is used as a flow path for the molten metal. However, this type of container requires heating (or preheating) before use, and a large heat load is applied to the stalk during this heating, so that there is a problem in durability such as the stalk is cracked immediately. If metal stalk is employed to avoid cracking, the metal is exposed to a high-temperature atmosphere due to heating, and there is a problem that holes are immediately opened due to oxidation.
[0008]
The present invention has been made to solve such a problem, and the pressurizing gas is dissolved.
It is an object of the present invention to provide a container and a method for manufacturing the container that do not leak into a flow path for flowing molten metal inside and outside. Another object of the present invention is to provide a container which is low in maintenance cost and easy to maintain.
[0009]
[Means for Solving the Problems]
In order to solve this problem, a container according to a main aspect of the present invention is a container capable of storing molten metal, and includes a frame, a flow path provided inside the frame, and through which molten metal flows inside and outside. And a pipe provided so as to surround at least a part of the flow path.
[0010]
A container according to another aspect of the present invention is a container capable of storing molten metal, and includes a frame and a flow path for molten metal provided inside the frame and surrounded by a member that regulates gas flow. And an inherent lining. Examples of such a regulating member include materials such as metals (including alloys) and ceramics. Further, it is preferable that the restricting member is composed of a thermodynamically uniform layer in macroscopic view. In the case of a mixture of materials having different physical properties (for example, casters), that is, when a macroscopically heterogeneous layer is formed, the linear expansion coefficient due to the periodically applied thermal load is reduced. This is because a gas is allowed to enter because a crack or a crack is apt to occur due to a difference or the like. The constituent material of the pipe may be a metal alloy or a homogenized product of a commercially available ceramic fired product.
[0011]
In the present invention, when the pipe is made of metal, it is preferable that a lining layer made of fire resistance is formed on the inner wall of the pipe. By providing such a lining layer, it is possible to prevent deterioration of the metal part due to heat. Also, by making the pipe made of metal, it is possible to prevent particularly sharp deterioration of the pipe. Conversely, if the pipe is made of metal, even if the pipe is deteriorated due to heat or impact, it will take a long time until it becomes a problem. If sufficient, the pipes can be replaced before a problem occurs within a certain predictable range.
[0012]
When the lining layer made of a refractory material is formed as described above, it is a preferable embodiment that a holding member for holding the refractory material is provided protrudingly on the inner surface of the pipe. This can prevent the refractory material from falling off the pipe.
[0013]
In addition, such a holding member is more preferably provided below the pipe. For example, even if a crack occurs in the middle of the lining layer, the lining layer is held below the pipe, so that the lining layer does not fall off.
[0014]
Further, in such a case, it is a preferable mode to provide a prohibited area where the provision of the holding member is prohibited, that is, to provide no holding member in this area, on the upper side inside the pipe. Since the coefficient of thermal expansion of the pipe and the coefficient of thermal expansion of the lining layer are different, when heat is applied to the pipe, the elongation of the two will be different. Therefore, if the upper and lower sides of the lining are held by the holding member, stress is generated in both of them, which causes cracking and deformation. Therefore, by providing the forbidden region as in the present invention, the elongation can be absorbed and the generation of stress can be suppressed.
[0015]
In the present invention, it is preferable to use a pipe made of ceramics or a pipe in which a refractory material is lined inside a metal pipe. As the metal, for example, SGP, STPT (carbon steel pipe for high-temperature piping) or STPG (carbon steel pipe for pressure piping) can be used.
[0016]
As the refractory material, for example, a refractory material for molten aluminum and molten magnesium (including a refractory caster, a heat insulating material, a heat insulating caster, and the like) can be used. Ceramics, carbon, and graphite may be mixed with these refractory materials. Thereby, the non-wettability of the molten metal to the pipe is improved, and the strength can also be improved. Further, maintenance becomes easy. More specifically, as a refractory material, TMU? 85 AEFN (Al ₂ O ₃ : 82% SiO ₂ : 13%) or SC made by the company? SAE85 (Al ₂ O ₃ : 8% SiC: 83% SiO ₂ : 7%). However, the invention is not limited to such materials.
[0017]
In the present invention, since the flow path is inherent in the lining, heat conduction from the molten metal reservoir to the flow path is high. For this reason, the heat retention of the molten metal flowing through the flow channel can be enhanced, the fluidity can be maintained, and the flow channel is not clogged. In addition, the pressurizing gas does not leak into the flow path because the flow path is surrounded by a member that regulates gas flow, for example, a metal pipe or a ceramic pipe. Therefore, stable supply of the molten metal can be performed. Further, the ceramics layer has a high thermal conductivity and is therefore useful for keeping the flow channel warm. As ceramics, for example, Si ₃ N ₄ , SiN, SiC, TiO ₂ , TiN, carbon and the like. More specifically, as the ceramic pipe, SCN (SiC: 74.8% Si ₃ N ₄ : 23.54%), KN? 101 (mainly Si ₃ N ₄ ), Kyocera Corporation SN? 220 (mainly Si ₃ N ₄ Sialon HCN manufactured by Hitachi Metals, Ltd.? 10 (mainly Si ₃ N ₄ ) And the like. These are formed by, for example, a CIP method (cold isostatic pressing method). The pressure in that case is 10,000 kgf / cm ² It is preferable that it is above. In general, ceramic pipes have high strength, but often cause cracks and the like in response to a heat load. However, in the present invention, since the ceramics pipe is embedded in the lining layer, the outside of the pipe is not directly exposed to a high temperature, such as during preheating of the container, and the life is very long. Further, even if the pipe is broken or cracked, the supply of the molten metal can be continued as long as the flow path is maintained. Therefore, it is possible to avoid a situation in which the supply of the molten metal cannot be performed suddenly at the supply destination and the container is brought back.
[0018]
Here, from the viewpoint of heat insulation of the flow path, it is preferable that the flow path is present in the lining from a position near the bottom in the container to the upper surface of the container. As an example of the arrangement of the flow path, a lining is formed on the inner surface of the frame so as to have a raised part that extends in the vertical direction and is convex inside the container, and the flow path is formed in the raised part in the extending direction of the raised part. Can be provided along the line.
[0019]
Further, by adopting a structure in which the flow path is surrounded by a pipe embedded in the lining, and by making this pipe a cartridge, the flow path can be replaced when the flow path is clogged. The pipe may be provided so as to surround a part of the flow path instead of the entire flow path. If the pipe is provided in a part of the lower part of the flow path, it may be difficult to replace the pipe.
[0020]
By employing a structure in which the inner surface of the pipe is covered with a fire-resistant member, the durability of the pipe can be increased, and leakage of the pressurizing gas to the flow path can be prevented for a long time. Preferably, the raised portion near the lower opening surface of the pipe has a tapered shape so that the inside of the container is widened. This improves the accessibility of the lower part of the pipe from the inside of the container during maintenance of the container. This configuration, together with the detachable structure of the large lid, improves the maintainability of the container and the reliability of the container.
[0021]
A method for manufacturing a container according to another aspect of the present invention is a container capable of storing molten metal, which includes a frame and a flow path provided inside the frame and for flowing the molten metal inside and outside. In a method of manufacturing a container having a lining and a pipe provided so as to surround at least a part of the flow path, the pipe is arranged in a hole for forming the flow path, and the pipe is arranged. A pipe holding member having fluidity is injected into a gap between the pipe and the hole, and the pipe holding member is cured. At this time, it is a preferable mode to inject the pipe holding member while holding the pipe so as not to contact the lining.
[0022]
In the present invention, it is preferable that the pipe holding member having fluidity has a lower strength than the lining after hardening. For example, as the pipe holding member, for example, a ceramic fiber or the like can be used. Curing may be performed by heating the container. Alternatively, a material having a lower density than the lining may be used. As such a member, for example, a material in which ceramic fibers are dispersed in a binder can be cited, but other materials may be used.
[0023]
The container according to another aspect of the present invention is a container capable of storing molten metal, a frame, and a lining provided inside the frame and having a flow path for flowing the molten metal inside and outside, and A pipe provided so as to surround at least a part of the flow path, a pipe holding layer interposed between a hole and a pipe for forming the flow path, and having a lower strength or density than the lining. It is characterized by doing. This pipe holding layer also functions as a layer for relieving stress caused by thermal deformation of the pipe.
[0024]
In the present invention, by adopting a structure in which the pipe is embedded in the lining via a member having a lower strength (or a smaller density) than the lining, the pipe can be easily replaced, and the pipe cartridge can be easily replaced. Becomes possible. When replacing the pipe, a member having a lower strength or density than the lining or a brittle member is broken, the pipe is taken out of the lining, and the pipe holding member inside the hole is removed. After that, the pipe is arranged in the lining, and a member having a lower strength or density after curing than the lining or a brittle pipe holding member is poured into the gap to fix the pipe in the lining so that the pipe can be replaced. Because it becomes. The ability to replace pipes independently of the lining significantly reduced the cost of maintaining the vessel.
[0025]
A container according to another aspect of the present invention is a container capable of storing molten metal, and includes a frame, a hole provided inside the frame, and penetrating between a lower opening in the container and an upper surface of the container. A lining, a first pipe having a first flange on the upper surface side, inserted into the hole, and forming a flow path for flowing molten metal inside and outside, and protruding from an inner wall of the hole; A holding claw for holding the first pipe, and a pipe holding layer interposed between the hole and the first pipe. The holding claws may be formed of various steel materials such as a round bar. It is preferable to arrange a heat-insulating member such as a ceramic sheet between the holding claw and the first pipe to enhance the heat-insulating property.
[0026]
A container according to another aspect of the present invention is a container capable of storing molten metal, and includes a frame, a hole provided inside the frame, and penetrating between a lower opening in the container and an upper surface of the container. A lining, a first pipe inserted into the hole to form a flow path for flowing molten metal inside and outside, and the hole and the first pipe so that the first pipe does not contact the frame. A pipe holding layer interposed between the first pipe and the first pipe.
[0027]
In the present invention, heat is not diffused from the first pipe because the first pipe serving as a flow path of the molten metal is thermally separated from the frame. Therefore, clogging of the first pipe hardly occurs. In particular, the upper part of the first pipe, which is close to the outside of the frame, is susceptible to heat radiation, and is liable to decrease in temperature. For this reason, the fluidity of the molten metal is deteriorated or clogged. In the present invention, by adopting a structure in which the first pipe is thermally separated as far as possible from the flange receiving portion, the second flange, and the frame, it is possible to minimize the influence of heat radiation. Therefore, the fluidity of the molten metal can be maintained, and clogging of the piping can be prevented. It is preferable to arrange the upper part of the first pipe as vertically as possible. Normally, the liquid level at the time of containing the molten metal comes to the upper part of the vessel, but the molten metal in the first pipe also fluctuates due to shaking during transportation of the vessel. This is because if the pipe is arranged obliquely at this time, the molten metal tends to reach a wider area when the molten metal shakes, so that the molten metal is easily cooled. Therefore, if the portion above the liquid level of the molten metal in the first pipe is set upright as in the present invention, such cooling can be suppressed to a minimum and clogging of the pipe can be prevented. Can be.
[0028]
In the present invention, the upper surface portion of the container surrounds the first flange, and a flange receiving portion provided to have a flange receiving surface at a position higher than the height of the surface of the first flange. A second pipe fixed to the flange receiving portion, the second pipe being connected to the flow path, and interposed between the first flange surface and the second flange surface. A first packing having a first thickness, and a second packing having a second thickness smaller than the first thickness interposed between the flange receiving surface and the second flange surface More preferably. The flange receiving portion may have any shape as long as it can fix the second flange. For example, a flange similar to the second flange may be fixed on the frame. Here, the position higher than the height of the surface of the first flange means that the flange receiving surface is separated from the flange surface of the first flange by a predetermined distance. Then, a first packing is sandwiched between the first flange and the second flange of the first pipe, and a second packing is sandwiched between the first flange and the second flange. You. Therefore, as described above, the first packing on the inner peripheral side is thicker than the second packing on the outer peripheral side.
[0029]
A container according to another aspect of the present invention is a container capable of storing molten metal, and includes a frame, a hole provided inside the frame, and penetrating between a lower opening in the container and an upper surface of the container. Lining, a first pipe having a first flange on the upper surface side, inserted into the hole, and forming a flow path for flowing molten metal inside and outside, and a first pipe on the upper surface of the container. A flange receiving portion provided, surrounding the first flange, and having a flange receiving surface at a position higher than the height of the surface of the first flange; and a second flange fixed to the flange receiving portion. A second pipe communicating with the flow path, a first packing having a first thickness inserted between the first flange surface and the second flange surface, Between the flange receiving surface and the second flange surface Characterized by comprising a second packing having a thin second thickness less than the first thickness interposed.
[0030]
In the present invention, the first packing is thicker than the second packing, so that the first pipe held therethrough has some mechanical play. Therefore, deformation of the first pipe, particularly the first flange, due to the shaking or the like is less likely to occur, and it is possible to prevent such cracks and the like. At the same time, the stress caused by the periodically applied heat is also alleviated by this play, so that cracks, cracks and the like can be prevented. In addition, since the first flange of the first pipe is also thermally separated from the frame, heat does not diffuse from the first pipe. Therefore, clogging of the first pipe hardly occurs.
[0031]
In the present invention, it is more preferable that the apparatus further includes a heat insulating member inserted between the back surface of the first flange and the holding claw. Thus, since the first flange of the first pipe is further thermally separated from the frame, the first pipe is less likely to be clogged.
[0032]
A container according to another aspect of the present invention is a container capable of containing a molten metal and allowing the molten metal to flow to and from the outside using a pressure difference, wherein a first flange is provided at an opening. A frame having a lining having a flow path of the molten metal which is opened near the center of the opening, and a second connected to the first flange so as to be connected to the flow path at the opening. A second pipe having a flange, and a first pipe surrounding at least a part of the flow path in the frame and being embedded so that an end surface thereof is lower than an opening surface of an opening of the frame. It is characterized by having.
[0033]
If the inner diameter of the first flange is larger than the outer diameter of the first pipe, a space for filling the heat insulating layer between the flow path of the molten metal and the first pipe can be maintained. Further, it is preferable that the first pipe is arranged so as not to directly contact the first flange and the second flange. This is because when the first pipe is in direct contact with the first flange or the second flange, the temperature of the first pipe is easily lowered by cooling.
[0034]
The filling of the member serving as the pipe holding layer may be performed by providing a port near the lower side of the first flange of the frame and filling the port from this port. It is preferable that at least two ports are provided, whereby the piping holding member can be filled from one port and air can be released from the other port, so that the filling property is improved. It is also possible to know the completion of filling.
[0035]
A container according to another aspect of the present invention is a container capable of suctioning molten metal to the inside by a pressure difference or supplying the molten metal to the outside, and a frame, and is provided inside the frame, It is characterized by comprising a lining layer in which a flow path extending from below to above is present, and a pipe exchangeably inserted into the flow path of the lining layer. The exchangeability of the pipe is achieved by further providing a pipe holding layer having a smaller strength or a higher density (or a larger brittleness) than the pipe between the pipe inserted into the flow path and the lining layer. You. This pipe holding layer also functions as a layer for relieving stress caused by thermal deformation of the pipe.
[0036]
That is, the present invention is to prevent the gas from entering into the flow path of the molten metal (for example, molten aluminum alloy, molten magnesium alloy, etc.) in the frame due to cracks in the lining and the like (pressurized gas is likely to enter. ), Rigid pipes are adopted, and the method of fixing the pipes is replaced with a replaceable cartridge structure. In the first place, when trying to flow molten metal by a differential pressure, there is a problem that a pipe is easily clogged. In the present invention, when the above-mentioned raised portion is provided inside the lining in order to positively supply heat to the flow channel side from the molten metal storage portion in the container, and a hole that becomes a flow channel like a tunnel is provided in the raised portion. There is. However, in the case of such a structure, gas is likely to enter the flow path due to cracks of the casters and the like. Therefore, in the present invention, a rigid pipe is adopted in order to prevent gas from entering into the flow path of the molten metal in the frame, and a method of fixing the pipe is formed into a replaceable cartridge structure.
[0037]
If the piping is not made into a cartridge structure, it is necessary to rebuild almost the entire lining of the container every time the piping is replaced, resulting in a very high cost, but by making the piping into a cartridge structure as in the present invention, Thus, only the piping can be easily and inexpensively replaced.
[0038]
In addition, since the pipe holding layer has lower rigidity and strength than the frame lining caster and the pipe, the pipe holding layer also functions as a layer for relieving stress caused by thermal deformation of the pipe. In order to enhance this function, at least a part of the pipe holding layer may be impregnated with aluminum or a mixture of aluminum and aluminum oxide. The mixture of aluminum and aluminum oxide is not necessarily high in rigidity, but is tough and very strong. It also has the ability to follow deformation. Therefore, by impregnating the pipe holding layer, the stress relaxation ability can be improved.
[0039]
A container according to another aspect of the present invention is a container capable of storing a molten metal, and includes a frame and a raised portion provided inside the frame and protruding on the inner surface side of the container and extending in a vertical direction. A lining having a flow path for flowing molten metal inside and outside the ridge, and having an opening on the inner surface side of the container near the bottom surface of the container, which communicates with the flow path, A pipe inserted into the flow path, and a holding member for holding a lower end face of the pipe in order to maintain a gap between a bottom face of the container and a lower end face of the pipe. It is.
[0040]
In the present invention, the provision of the holding member for holding the pipe can prevent the pipe and the lining layer that may be formed inside the pipe from falling off. Also, in the manufacturing process of the container, there is an effect that a jig for fixing the position is not required when the pipe is inserted into and fixed to the flow path.
[0041]
Here, it is preferable that the holding member is provided integrally with the lining, for example, by forming the holding member by a stepped portion that protrudes into the flow path from the lining provided at the lower part of the flow path. The integration can be realized with a simple configuration.
[0042]
A container according to yet another aspect of the present invention is a container capable of storing molten metal, a frame, a lining provided inside the frame, and for flowing molten metal inside and outside. And a pipe arranged so as to be in contact with the lining along the flow direction of the molten metal.
[0043]
The pipe may be the above-mentioned metal pipe, or may be a ceramic pipe.
[0044]
Generally, preheating in the container is performed by opening a hatch provided substantially at the center of the upper surface of the container and inserting a gas burner into the container from there. In the present invention, since the pipe contacts the lining and is located farthest from the center of the vessel, the pipe is located farthest from the gas burner in the vessel. Therefore, the piping according to the present invention is hardly thermally affected by the gas burner. Further, the heat radiated from the gas burner to the pipe is conducted to the lining side in contact with the pipe, thereby preventing the pipe from being locally heated. Therefore, in the present invention, deterioration of the pipe due to preheating can be suppressed as much as possible.
[0045]
The container according to the present invention is, for example, mounted on a truck and transported on a public road. Therefore, the container is subject to considerable vibration. In the present invention, since the pipe is in contact with the lining, it is possible to prevent the pipe from vibrating due to such vibration and causing mechanical destruction.
[0046]
Furthermore, in the container according to the present invention, a certain amount of molten metal remains inside the container after the molten metal is drawn out from the container (remaining hot water). Such remaining hot water is discharged to the outside from the pipe by tilting the container. In the present invention, since the pipe is in contact with the lining and is located on the outermost side in the container, the displacement of the remaining hot water level when inclined is the largest. Therefore, the remaining hot water can be efficiently discharged to the outside with the minimum inclination.
[0047]
In a preferred embodiment of the present invention, the lining is provided with a depression along the flow direction of the molten metal in the pipe, and a part of the pipe is embedded in the depression. Thereby, the pipe can be firmly gripped. Further, the area where the pipe and the running contact each other can be increased, and the thermal conductivity from the pipe to the lining can be further increased.
[0048]
In a preferred embodiment of the present invention, the inner periphery of the lining has a cylindrical shape, and the periphery of the depression has a planar shape.
[0049]
A container according to another aspect of the present invention is a container capable of storing a molten metal, and includes a container main body having a first opening at an upper portion, and an external device through the first opening from inside the container main body. A pipe for flowing molten metal inside and outside, having a through hole through which the pipe penetrates, covering the first opening, and a state in which the pipe is disposed in the container body. And a lid detachably provided to the container main body so as to be detachable from the container main body.
[0050]
In a container for storing a molten metal, for example, molten aluminum, since slag (aluminum oxide) adheres particularly near a corner in the container, it is necessary to perform maintenance for removing such slag. In this case, for example, it is necessary to remove the lid attached to the upper opening of the container body. In the container according to the present invention, the pipe passes through the inside and outside of the container through the through hole of the lid, but the lid can be removed from the container main body in a state where the pipe is disposed in the container main body. As a result, the lid can be removed while the pipe remains on the container body side, and maintenance can be easily performed.
[0051]
In a preferred embodiment of the present invention, the container body has a frame and a lining provided inside the frame, and the pipe is provided so as to be in contact with the frame.
[0052]
Further, the container body has a frame and a raised portion provided on the inside of the frame and protruding on the inner surface side of the container so as to extend in a vertical direction, and a molten metal inside and outside the raised portion. A lining having a second opening on the inner surface side of the container that is provided near the bottom surface of the container and that is adjacent to the bottom surface of the container, wherein the pipe is inserted into the channel. This is also a preferred embodiment of the present invention.
[0053]
In this case, it is more preferable that the pipe is exposed to the inner surface side of the container at the second opening. The heat of the molten metal is transmitted from the exposed portion of the pipe to the entire pipe, so that clogging of the molten metal flowing through the pipe can be prevented.
[0054]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, in order to explain the present invention in more detail, embodiments of the present invention will be described with reference to the drawings.
[0055]
FIG. 1 is a sectional view of a container according to an embodiment of the present invention, and FIG. 2 is a plan view thereof.
The container 1 has a structure in which a lining 1b is formed inside a frame 1a, and the lining 1b has a flow path 9 for flowing molten metal between the inside and the outside of the container 1. This lining is composed of a plurality of layers, the innermost layer of which is made of a refractory caster, and the outer layer side of which is made of a heat insulating caster or a heat insulating board or a heat insulating sheet. In addition, the container 1 has a large lid 4 disposed in an upper opening 3 of a cylindrical body 2 having a bottom. Flanges 5 and 6 are provided on the outer periphery of the main body 2 and the large lid 3, respectively, and the main body 2 and the large lid 3 are fixed by tightening bolts 7 between these flanges.
[0056]
An opening 12 is provided substantially at the center of the large lid 4, and a hatch (child lid) 14 to which a handle 13 is attached is arranged in the opening 12. The hatch 14 is provided at a position slightly higher than the upper surface of the large lid 4. One portion of the outer periphery of the hatch 14 is attached to the large lid 4 via a hinge 15. Thereby, the hatch 14 can be opened and closed with respect to the opening 12 of the large lid 4. Further, bolts 16 with handles for fixing the hatch 14 to the large lid 4 are attached to two places on the outer periphery of the hatch 14 so as to face the position where the hinge 15 is attached. The hatch 14 is fixed to the large lid 4 by closing the opening 12 of the large lid 4 with the hatch 14 and rotating the bolt 16 with the handle. Further, the hatch 14 can be opened from the opening 12 of the large lid 4 by reversing the rotation of the bolt 16 with the handle to release the fastening. The maintenance of the inside of the container 1 and the insertion of the gas burner at the time of preheating are performed through the opening 12 with the hatch 14 opened.
[0057]
At the center of the hatch 14 or at a position slightly deviated from the center, a through hole 18 for adjusting the internal pressure for reducing and increasing the pressure in the container 1 is provided. A piping 19 for pressurization and decompression is connected to the through hole 18. The pipe 19 extends upward from the through hole 18, bends at a predetermined height, and extends horizontally therefrom. A thread is formed on the surface of the portion of the pipe 19 inserted into the through hole 18, and a thread is also formed on the through hole 18, whereby the pipe 19 is fixed to the through hole 18 by screwing. It is supposed to be. Alternatively, a plug may be embedded in the through-hole 18 and fixed to one end of the pipe 19 with a quick coupler structure that serves as a socket for the plug.
[0058]
A pressurizing or depressurizing pipe 20 is connectable to one of the pipes 19, and a tank or a pressurizing pump stored in a pressurized gas is connected to the pressurizing pipe. The pump for pressure reduction is connected to the piping for the pressure. Then, it is possible to introduce the molten aluminum of about 650 ° C. to about 730 ° C. into the vessel 1 through the pipe 8 and the flow path 9 using the pressure difference by the pressure reduction, and to use the pressure difference by the pressurization. Thus, the molten aluminum can be led out of the vessel 1 through the flow path 9 and the pipe 8. The use of an inert gas such as a nitrogen gas as the pressurized gas can more effectively prevent the oxidation of the molten aluminum during pressurization.
[0059]
At a position slightly deviated from the center of the hatch 14 and at a position facing the above-mentioned through-hole 18 for pressurizing and depressurizing, a through-hole 21 for releasing pressure is provided, and the through-hole 21 for releasing pressure is provided with a relief valve. (Not shown) can be attached. Thus, for example, when the pressure inside the container 1 becomes equal to or higher than a predetermined pressure, the inside of the container 1 is opened to the atmospheric pressure from the viewpoint of safety. This relief valve may be provided on the pressure / pressure reduction control system side opposite to the hose 20. This makes it unnecessary to provide a relief valve individually for each container.
[0060]
In the large lid 4, two through holes 23 for a liquid level sensor into which two electrodes 22 as a liquid level sensor are inserted are arranged at a predetermined interval. The electrodes 22 are inserted into these through holes 23, respectively. The electrodes 22 are arranged so as to face each other in the container 1, and the respective tips extend to, for example, a position substantially equal to the maximum liquid level of the molten metal in the container 1. By monitoring the state of conduction between the electrodes 22, the maximum liquid level of the molten metal in the container 1 can be detected, whereby the excessive supply of the molten metal to the container 1 can be more reliably prevented. It has become.
[0061]
On the bottom rear surface of the main body 2, for example, two legs 25 having a cross-sectional mouth shape into which a fork (not shown) of a forklift is inserted and having a predetermined length are arranged in parallel. Further, the bottom inside the main body 2 is entirely inclined so that the flow path side becomes lower. Thereby, when the molten aluminum is led to the outside through the flow path 9 and the pipe 8 by pressurization, the so-called remaining hot water is reduced. Further, for example, when the container 1 is tilted and the molten aluminum is led out through the flow path 9 and the pipe 8 during maintenance, the angle at which the container 1 is tilted can be made smaller, and safety and workability are improved. .
[0062]
Here, the flow path 9 is surrounded by a pipe 34 made of metal such as iron. The inner wall of the pipe 34 is covered with a refractory material 34b. Thereby, the heat resistance of the pipe 34 is improved. The pipe 34 is embedded in the lining 1b via the filler 10. The filler 10 has lower strength than the lining 1b. Here, the strength mainly refers to a bending strength against mechanical stress from the outside, and examples thereof include a material having a density lower than that of the lining. As the lining 1b, for example, a dense refractory ceramic material can be cited, and the filler 10 having a lower strength is made of, for example, a ceramic fiber and a binder (for example, alumina: silica = 2: 8). In this case, the bulk specific gravity is about 1.2, and more specifically, the joint sealer 13 (manufactured by Toshiba Monoflux), Fiber Excel (registered trademark), and the like can be given.
[0063]
The flow path 9 thus surrounded by the pipe 34 extends toward the upper part 9b on the outer periphery of the main body 2 via the opening 9a provided at a position near the container main body bottom 2a on the inner circumference of the main body 2. ing.
[0064]
For example, a pipe 8 is detachably connected to the upper portion 9b of the flow path 9 by fixing using, for example, bolts. The pipe 8 is made of, for example, iron, and may have an R shape. This is because the molten metal flows more smoothly. The inside diameter of the flow path 9 and the pipe 8 following the flow path 9 are substantially equal, and are preferably about 65 mm to 85 mm. Conventionally, the inside diameter of this type of piping has been about 50 mm. This is because if it is more than that, it is considered that a large pressure is required when the inside of the container is pressurized to draw out the molten metal from the pipe. On the other hand, the present inventors have set that the inner diameter of the flow path 9 and the pipe 8 following the flow path is preferably about 65 mm to 85 mm, which is much larger than 50 mm, more preferably about 70 mm to 80 mm, and still more preferably 70 mm. I found that. In other words, when the molten metal flows upward in the flow path or the pipe, two parameters, the weight of the molten metal itself present in the pipe and the viscous resistance of the inner wall of the pipe, have a great influence on the resistance obstructing the flow of the molten metal. It is thought that it is exerting. The inner diameter of the pipe can be specified regardless of the standard, but it is 80A, 100A, and 125A in the case of a JIS standard pipe that is normally distributed. JIS standard piping is easier to obtain, both in terms of price and delivery. The 125A piping is heavy and unsuitable due to weight considerations. Further, in the case of a 100 A pipe, the inner diameter is limited to about 70 mm to 80 mm (the limit in production and the minimum required lining thickness). In view of the above, the inventors have determined the inner diameter to be about 70 mm to about 80 mm in consideration of the physical effect, availability in the market, and competitiveness. Here, when the inner diameter is smaller than 65 mm, the molten metal flowing through the pipe is affected by both the weight of the molten metal itself and the viscous resistance of the inner wall at any position. , A region which is hardly affected by the viscous resistance of the inner wall starts to form, and the region gradually increases. The effect of this region is very large, and the resistance that hinders the flow of the molten metal begins to drop. When the molten metal is drawn out of the container, the inside of the container may be pressurized with a very small pressure. In other words, conventionally, the influence of such a region is not taken into account at all, and only the weight of the molten metal itself is considered as a variable factor of the resistance that hinders the flow of the molten metal. The inner diameter was about 50 mm. On the other hand, when the inner diameter exceeds 85 mm, the weight of the molten metal itself becomes very dominant as a resistance to hinder the flow of the molten metal, and the resistance to hinder the flow of the molten metal increases. According to the results of trial production by the present inventors, an inner diameter of about 70 mm to 80 mm may be sufficient to pressurize the pressure in the container with a very small pressure, and 70 mm is most preferable from the viewpoint of standardization and workability. That is, the pipe diameter is standardized in units of 50 mm, 60 mm, 70 mm, and 10 mm, and the smaller the pipe diameter, the easier the handling and the better the workability.
[0065]
A first flange 34 a is provided at the upper end of the pipe 34, and a second flange 5 a that is in contact with the lower surface of the first flange 34 a is provided on the frame 1 a so as to surround the circumference of the pipe 34. Here, the outer diameter of the first flange 34a is smaller than the outer diameter of the second flange 5a. Thereby, the heat radiated from the pipe 34 can be further reduced, and the heat retaining effect of the flow path 9 can be enhanced. The flange 8a of the pipe 8 is fixed to the container 1 via a bolt (not shown). A packing for heat insulation is interposed between the flanges.
[0066]
FIG. 3 is a sectional view taken along line AA in FIG.
[0067]
As shown in FIG. 3, the lining 1b has a two-layer structure of a refractory layer 1c and a heat insulating layer 1d. The flow path 9 is provided in the refractory layer 1c. By employing such a configuration, heat from the inside of the container is easily transmitted to the flow path 9. On the other hand, the flow path 9 has a structure in which almost half of the flow path 9 is covered by the heat insulating layer 1d, and the heat retaining effect is enhanced. Examples of the refractory layer 1c include a dense refractory ceramic material. As the heat insulating layer 1d, a ceramic material having a lower density than that can be used.
[0068]
In the present embodiment, since the flow path 9 is surrounded by the pipe 34, even if a crack occurs in the lining 1b, the gas does not reach the flow path 9 from inside the container 1 and is led out of the pipe 8 to the outside. The gas is not mixed with the molten aluminum. Further, even if the flow path 9 becomes clogged, the clogging can be eliminated only by replacing the pipe 34. Furthermore, even if the piping is damaged, it can be easily replaced.
[0069]
Hereinafter, a method of replacing the pipe 34 will be described with reference to FIGS.
[0070]
First, as shown in FIG. 4, the pipe 34 is extracted with a mechanical force while breaking the filler 10 interposed between the lining 1b and the pipe 34. Since the filler 10 has lower strength and greater brittleness than the lining 1b, the filler 10 can be easily broken without adversely affecting the lining 1b. FIG. 5 shows a state where the pipe 34 is extracted. After removing the pipe 34, it is preferable to remove the filler layer 10, which is a pipe protection layer.
[0071]
Next, as shown in FIG. 6, a jig 36 for holding a new pipe 34 in a predetermined position in the container 1 and for preventing the loss of the filler is arranged, and the pipe 34 is inserted into the flow path 9. Then, the filler 10 in a state having fluidity is injected into the gap. Then, the filler 10 is solidified by drying and firing. Thereafter, the jig 36 is removed. After the curing of the filler 10, the bulk specific gravity becomes about 1.2 to about 0.6, and the filler 10 becomes porous without binder. Therefore, since the porosity is high, the strength of the filler is further reduced.
[0072]
Next, another embodiment of the present invention will be described with reference to FIGS.
The container 101 according to this embodiment is different from the above embodiment in the structure of the flow path. That is, a lining 101b having a convex portion 101c which is a protruding portion inward in the vertical direction is provided inside the frame 101a. The lining 101b preferably has a laminated structure of a refractory layer and a heat insulating layer, as in the above embodiment. These materials may be the same as in the above embodiment.
[0073]
A flow path 109 penetrating from a position near the inner bottom of the container 101 to an upper surface side of the container 101 is provided in the convex portion 101c.
[0074]
The flow path 109 is surrounded by a pipe 134 made of metal such as iron or ceramics. The inner wall of the pipe 134 is covered with a refractory material 134b. Thereby, the heat resistance of the pipe 134 is improved. The pipe 134 is embedded in the lining 101b via the filler 110. The filler 110 has lower strength than the lining 101b. These materials may be the same as in the above embodiment. When the pipe 134 is not used, a problem that a pressurized gas or the like intrudes into the flow channel through cracks or the like of the lining layer 101c easily occurs. According to the present invention, such a gas can be prevented from entering. Therefore, stable supply of the molten metal can be performed.
[0075]
For example, a pipe 108 is detachably connected to an upper portion of the flow path 109. The pipe 108 is made of, for example, iron (the inner wall is covered with a refractory material), and may have an R shape or a Τ shape. This is because the molten metal flows more smoothly. The inner diameter of the flow path 109 and the pipe 108 following the flow path 109 are substantially equal, and are preferably about 65 mm to 85 mm.
[0076]
A first flange 134a is provided at an upper end of the pipe 134, and a second flange 105a that is in contact with the lower surface of the first flange 134a is provided on the frame 101a so as to surround the pipe 134. Here, the outer diameter of the first flange 134a is smaller than the outer diameter of the second flange 105a. Thereby, the heat radiated from the pipe 134 can be further reduced, and the heat retaining effect of the flow path 109 can be enhanced. Of course, a structure as shown in FIG. 21 may be adopted. The flange 108a of the pipe 108 is fixed to the container 101 via a bolt (not shown). A packing is interposed between the flanges.
[0077]
In the present embodiment, in particular, since the flow path 109 penetrates through the inside of the convex portion 101c, which is a bulging portion of the lining, from a position near the bottom of the container 101 to the upper surface side of the container 101 like a tunnel, the flow path 109 is surrounded. The area of the inner wall of the container 101 is substantially increased, and the amount of heat transferred from the molten aluminum contacting the inner wall of the container 101 to the flow path 109 is increased. Therefore, the heat retention of the flow path 109 can be enhanced, and the fluidity of the molten metal can be maintained.
[0078]
As shown in FIGS. 10 and 11, even when the flow path 109 is not surrounded by the pipe, the same effect can be obtained in that the heat retaining property of the flow path 109 can be improved.
[0079]
FIG. 12 is a diagram showing an overall configuration of a metal supply system according to one embodiment of the present invention.
[0080]
As shown in the figure, the first factory 51 and the second factory 60 are provided at, for example, remote places via a public road 63.
[0081]
In the first factory 51, a plurality of die cast machines 52 as use points are arranged. Each die casting machine 52 is for molding a product having a desired shape by injection molding using molten aluminum as a raw material. Examples of such products include parts related to automobile engines. Further, as the molten metal, not only an aluminum alloy but also an alloy mainly composed of other metals such as magnesium and titanium may be used. Near each die cast machine 52, a holding furnace (hand holding furnace) 53 for temporarily storing the molten aluminum before the shot is arranged. A plurality of shots of molten aluminum are stored in the holding furnace 53, and the molten aluminum is injected from the holding furnace 53 into the die cast machine 52 through the ladle 54 or the pipe for each shot. It has become. Each holding furnace 53 has a liquid level detection sensor (not shown) for detecting the liquid level of the molten aluminum stored in the container and a temperature sensor (not shown) for detecting the temperature of the molten aluminum. Are located. The detection results of these sensors are transmitted to the control panel of each die cast machine 52 or the central control unit 56 of the first factory 51.
[0082]
In the receiving section of the first factory 51, a receiving table 57 for receiving the container 1 described later is arranged. The container 1 received by the receiving table 57 of the receiving section is delivered to a predetermined die cast machine 52 by a delivery vehicle 58, and molten aluminum is supplied from the container 1 to the holding furnace 53. The supplied container 1 is returned to the receiving table 57 of the receiving section by the delivery vehicle 58 again.
[0083]
The first factory 51 is provided with a first furnace 59 for melting aluminum and supplying the molten aluminum to the container 1. The container 1 supplied with molten aluminum by the first furnace 59 is also supplied to the delivery vehicle 58. Is delivered to a predetermined die cast machine 52.
[0084]
In the first factory 51, a display unit 55 is provided to display when addition of molten aluminum is necessary in each die casting machine 52. More specifically, for example, a unique number is assigned to each die cast machine 52, and the number is displayed on the display unit 55, which corresponds to the number of the die cast machine 52 for which addition of molten aluminum is necessary. The number on the display section 55 is turned on. The operator transports the container 1 to the die-casting machine 52 corresponding to the number using the delivery vehicle 58 based on the display on the display unit 55 and supplies the molten aluminum. The display on the display unit 55 is performed under the control of the central control unit 56 based on the detection result by the liquid level detection sensor.
[0085]
The second factory 60 is provided with a second furnace 61 for melting aluminum and supplying it to the container 1. A plurality of types of containers 1 having different capacities, pipe lengths, heights, widths, and the like are prepared. For example, there are a plurality of types having different capacities according to the capacity and the like of the holding furnace 53 in the die cast machine 52 in the first factory 51. However, it goes without saying that the container 1 may be unified into one type and standardized.
[0086]
The container 1 supplied with the molten aluminum by the second furnace 61 is placed on a transporting truck 64 by a forklift (not shown). The truck 64 carries the containers 1 through the public road 63 to the vicinity of the receiving table 57 of the receiving section in the first factory 51, and these containers 1 are received by the receiving table 57 by a forklift (not shown). . The empty container 1 in the receiving section is returned to the second factory 60 by the truck 64.
[0087]
In the second factory 60, a display unit 62 for displaying when the addition of molten aluminum is necessary in each die casting machine 52 in the first factory 51 is displayed. The configuration of the display unit 62 is substantially the same as that of the display unit 55 arranged in the first factory 51. The display on the display unit 62 is performed under the control of the central control unit 56 in the first factory 51 via the communication line 65, for example. In the display unit 62 in the second factory 60, it has been determined that the molten aluminum is supplied from the first furnace 59 in the first factory 51 among the die cast machines 52 requiring the supply of molten aluminum. The die cast machine 52 is displayed so as to be distinguished from the other die cast machines 52. For example, the number corresponding to the die cast machine 52 determined as such flashes. Thus, it is possible to prevent the second factory 60 from erroneously supplying the molten aluminum to the die cast machine 52 determined to be supplied with the molten aluminum from the first furnace 59. The display unit 62 also displays data transmitted from the central control unit 56 in addition to the above.
[0088]
Next, the operation of the metal supply system thus configured will be described.
The central control unit 56 monitors the amount of molten aluminum in each holding furnace 53 via a liquid level detection sensor provided in each holding furnace 53. Here, when the necessity of supplying molten aluminum occurs in a certain holding furnace 53, the central control unit 56 detects the “unique number” of the holding furnace 53 by a temperature sensor provided in the holding furnace 53. "Temperature data" of the holding furnace 53, "morphological data" relating to the form (described later) of the holding furnace 53, final "time data" when the molten aluminum disappears from the holding furnace 53, and "traffic" of the public road 63. The “data”, “amount data” and “temperature data” of the molten aluminum required in the holding furnace 53 are transmitted to the second factory 60 via the communication line 65. In the second factory 60, these data are displayed on the display unit 62. Based on these displayed data, the operator empirically determines that the container 1 reaches the holding furnace 53 immediately before the molten aluminum is exhausted from the holding furnace 53, and that the second molten aluminum is brought to a desired temperature. Of the container 1 from the factory 60 and the temperature at the time of sending the molten aluminum are determined. Alternatively, these data are taken into, for example, a personal computer (not shown), and the container 1 reaches the holding furnace 53 immediately before the molten aluminum runs out from the holding furnace 53 using predetermined software, and the molten aluminum at that time has a desired temperature. The time at which the container 1 is dispatched from the second factory 60 and the temperature at which the molten aluminum is dispatched may be estimated and the time and temperature may be displayed. Alternatively, the temperature of the second furnace 61 may be automatically controlled based on the estimated temperature. The amount of molten aluminum to be contained in the container 1 may also be determined based on the above “quantity data”.
[0089]
When the truck 64 carrying the container 1 departs at the shipping time and arrives at the first factory 51 via the public road 63, the container 1 is received from the truck 64 into the receiving table 57 of the receiving section.
[0090]
Thereafter, the received container 1 is delivered to a predetermined die-casting machine 52 by a delivery vehicle 58 together with a receiving table 57, and molten aluminum is supplied from the container 1 to a holding furnace 53.
[0091]
Next, a supply system from the second furnace 61 to the container 1 in the second factory 60 will be described with reference to FIG.
[0092]
As shown in FIG. 13, molten aluminum is stored in the second furnace 61. The second furnace 61 is provided with a supply unit 61a, and the suction tube 43 is inserted into the supply unit 61a. The suction pipe 43 is disposed such that one end thereof (the other end 43b of the suction pipe 43) protrudes from the liquid surface of the molten aluminum of the supply unit 61a. That is, one end 43a of the suction tube 43 extends to near the bottom of the second furnace 61, and the other end 43b of the suction tube 43 is led out from the supply unit 61a. The inclination angle is, for example, about 10 ° with respect to the perpendicular, and matches the inclination of the tip of the pipe 8 in the container 1. The distal end 43b of the suction pipe 43 is connected to the distal end of the pipe 8 in the container 1, and the distal end 43b of the suction pipe 43 and the distal end of the pipe 8 in the container 1 Connection with the unit becomes easy. Furthermore, there is also an effect of degassing hydrogen and the like dissolved in the molten metal, and the quality of the molten metal can be improved.
[0093]
Then, the pipe 20 connected to the pressure reducing pump 44 is connected to the pipe 19. Next, the pressure in the container 1 is reduced by operating the pump 44. Thereby, the molten aluminum stored in the second furnace 61 is introduced into the container 1 via the suction pipe 43 and the pipe 8.
[0094]
In the present embodiment, in particular, the molten aluminum stored in the second furnace 61 is introduced into the container 1 through the suction pipe 43 and the pipe 8, so that the molten aluminum is No contact with air. Therefore, no oxide is generated, and the quality of the molten aluminum supplied using the present system is very good. Further, the operation for removing the oxide from the inside of the container 1 becomes unnecessary, and the workability is improved.
[0095]
In the present embodiment, particularly, the introduction of the molten aluminum into the container 1 and the extraction of the molten aluminum from the container 1 can be performed using substantially two pipes, so that the system configuration is very simple. be able to. Further, since the chance that the molten aluminum comes into contact with the outside air is drastically reduced, generation of oxides can be substantially eliminated.
[0096]
As shown in FIG. 14, in this example, the high-pressure air is sent from the receiver tank 39 into the closed container 1, whereby the molten aluminum contained in the container 1 is discharged from the pipe 8 and enters the holding furnace 53. Is supplied. In FIG. 2, reference numeral 40 denotes a pressure valve, and 41 denotes a leak valve.
[0097]
Here, there are various types of height of the holding furnace 53, and the height of the pipe 8 can be adjusted by an elevating mechanism provided on the delivery vehicle 58 so that the tip of the pipe 8 is at an optimum position on the holding furnace 53. However, depending on the height of the holding furnace 53, there are cases where the lifting mechanism alone cannot cope with this. Therefore, in the present system, as the “form data” relating to the form of the holding furnace 53, data relating to the height of the holding furnace 53 and the distance to the holding furnace 53 and the like are sent to the second factory 60 in advance, and the second factory 60 On the side, the container 1 having the optimum form, for example, the optimum height is selected and delivered based on the data. In addition, you may select and deliver the container 1 of the optimal size according to the quantity to supply.
[0098]
FIG. 15 shows a manufacturing flow when the above system is applied to an automobile factory.
[0099]
First, as shown in FIG. 13, the molten aluminum stored in the second furnace 61 is introduced (hot water) into the container 1 via the suction pipe 43 and the pipe 8 (Step 151).
[0100]
Next, as shown in FIG. 12, the container 1 is transported from the second factory 60 to the first factory 51 by the truck 64 via the public road 63 (step 152).
[0101]
Next, in the first factory (use point) 10, the container 1 is delivered by the delivery vehicle 58 to the die casting machine 52 for manufacturing an automobile engine, and molten aluminum is supplied from the container 1 to the holding furnace 53 (step 153). ).
[0102]
Next, in the die cast machine 52, the molding of the automobile engine is performed using the molten aluminum stored in the holding furnace 53 (step 154).
[0103]
Then, the automobile is assembled using the automobile engine and other parts molded as described above, and the automobile is completed (step 155).
[0104]
In the present embodiment, as described above, since the engine of the vehicle is made of aluminum containing almost no oxide, it is possible to manufacture a vehicle having an engine with good performance and durability.
[0105]
FIG. 16 is a sectional view of a container according to another embodiment of the present invention.
[0106]
The container 201 has a structure in which a heat insulating material 72 and a refractory material 73 are laminated as a lining inside a frame 71. A board member 74 is interposed between the heat insulating material 72 and the refractory material 73 at a predetermined position. The refractory material 73 has a flow path 75 for flowing molten metal between the inside and the outside of the container. In the container 201, a large lid 78 is disposed in an upper opening 77 of a bottomed, cylindrical main body 76, and the main body 76 and the large lid 78 are fixed by tightening bolts between these flanges.
[0107]
Further, the hatch 80 can be opened from the opening 79 of the large lid 78 by reversing the rotation of the bolt with the handle to release the fastening. Then, with the hatch 80 opened, maintenance inside the container 201 and insertion of the gas burner at the time of preheating are performed through the opening 79.
[0108]
An opening 79 is provided substantially at the center of the large lid 78, and a hatch 80 that can be opened and closed is arranged in the opening 79. At the center of the hatch 80 or at a position slightly deviated from the center, a through hole 81 for adjusting the internal pressure for reducing and increasing the pressure in the container 201 is provided. A piping (not shown) for pressurization and decompression is connected to the through hole 81. At the end of the pipe, a tank for storing pressurized gas and a pump for pressurization are connected to the pipe for pressurization, and a pump for pressure reduction is connected to the pipe for pressure reduction. Then, it is possible to introduce the molten aluminum into the vessel 201 through the pipe by utilizing the pressure difference due to the pressure reduction, and to melt the aluminum out of the vessel 201 via the pipe by utilizing the pressure difference by applying the pressure. Derivation of aluminum is possible.
[0109]
At a position slightly deviated from the center of the hatch 80 and opposite to the pressurizing / depressurizing through-hole 81, a through-hole 82 for inserting an electrode rod (not shown) for detecting the liquid level is provided. .
[0110]
On the bottom rear surface of the main body 76, for example, two legs (not shown) having a cross-sectional opening shape into which a fork (not shown) of a forklift is inserted are arranged so as to be parallel, for example. Further, the bottom inside the main body 76 is entirely inclined so that the flow path side becomes lower. Thereby, when the molten aluminum is led out to the outside by pressurization, the so-called remaining hot water is reduced. Further, for example, when the container 201 is tilted and the molten aluminum is led out through the flow path 75 and the pipe 83 during maintenance, the angle at which the container 201 is tilted can be made smaller, and safety and workability are improved. .
[0111]
Here, the flow path 75 is surrounded by a pipe 83 made of a ceramic such as silicon nitride. The pipe 83 is embedded in the refractory material 73 via a filler 84. The filler 84 has lower strength than the refractory material 73. The piping 83 made of ceramics has good fire resistance, and there is no need to provide a fire-resistant material on the inner wall. Thereby, the heat resistance of the pipe 83 is improved. Here, the strength mainly refers to a bending strength against external mechanical stress, and the strength is relatively low when the bulk specific gravity is large. As the lining 72, for example, a dense refractory ceramic material can be cited, and the filler 84 having a lower strength is made of, for example, a ceramic fiber and a binder.
[0112]
The flow path 75 thus surrounded by the pipe 83 extends toward the upper part of the outer periphery of the main body 76 via an opening 85 provided at a position near the bottom of the container main body on the inner periphery of the main body 76. .
[0113]
An R-shaped pipe (not shown) made of, for example, iron (the inner wall is covered with a refractory material) is detachably connected to an upper portion of the flow path 75 by a bolt.
[0114]
A first flange 86 is provided at the upper end of the pipe 83, and a second flange 87 facing the lower surface of the first flange 86 is provided on the frame 71 so as to surround the circumference of the pipe 83. A flange member 88 for receiving and fixing a ceramic pipe 83 is interposed between the first flange 86 and the second flange 87. Reference numeral 89 denotes a hole into which the filler 84 is injected. This hole 89 is airtightly closed by a cap during normal times other than during maintenance.
[0115]
FIG. 17 is a sectional view showing another embodiment of the container.
In the present embodiment, a pipe 303 (Stoke) constituting the flow path 302 is vertically arranged in the container. Therefore, when there is a molten metal in the container 301, the pipe 302 comes into direct contact with the molten metal. The pipe 302 is made of ceramics such as silicon nitride. Thereby, fire resistance is enhanced and clogging of the piping is prevented. An R-shaped pipe (not shown) made of, for example, iron is connected to an upper portion of the flow path 302. In the present embodiment, the rotation of the omitted pipe is enabled. This facilitates handling in a narrow area. Reference numeral 304 indicates a member that holds the pipe 303 rotatably.
[0116]
The container 301 has a structure in which a heat insulating material 172 and a refractory material 173 are laminated as a lining inside a frame 171. A board material 174 is interposed between the heat insulating material 172 and the refractory material 173 at a predetermined position. In the container 301, a large lid 178 is disposed in an upper opening 177 of a bottomed cylindrical body 305, and the main body 305 and the large lid 178 are fixed by tightening bolts between these flanges.
[0117]
An opening 179 is provided substantially at the center of the large lid 178, and a hatch 180 that can be opened and closed is arranged in the opening 179. At the center of the hatch 180 or at a position slightly deviated from the center, a through hole 181 for adjusting the internal pressure for reducing and increasing the pressure in the container 301 is provided. A piping (not shown) for pressurization and decompression is connected to the through hole 181. At the end of the pipe, a tank or pressurized pump stored in pressurized gas can be connected to the pressurized pipe, and a depressurized pump can be connected to the depressurized pipe. I have. Then, it is possible to introduce the molten aluminum into the container 301 by utilizing the pressure difference by reducing the pressure, and to lead the molten aluminum out of the container 301 by utilizing the pressure difference by applying the pressure.
[0118]
A pair of through-holes 182 into which electrode rods (not shown) for liquid level detection are inserted are provided at positions slightly deviated from the center of the hatch 180 and opposite to the through-holes 181 for pressurization and decompression. Have been.
[0119]
On the bottom rear surface of the main body 301, for example, two legs (not shown) having a mouth-shaped cross section into which a fork of a forklift (not shown) is inserted are arranged in parallel, for example.
[0120]
Here, the flow path 302 is surrounded by a pipe 303 made of a ceramic such as silicon nitride. The pipe 303 made of ceramics has good fire resistance, and it is not necessary to provide a fire-resistant material on the inner wall. Thereby, the heat resistance of the pipe 303 is improved.
[0121]
The flow path 302 thus surrounded by the pipe 303 extends toward the upper part of the outer periphery of the main body 305 via the opening 185 provided at a position near the bottom of the main body of the main body 305. .
[0122]
A first flange 186 is provided at the upper end of the pipe 303, and a second flange 187 facing the lower surface of the first flange 186 is provided on the frame 171 so as to surround the circumference of the pipe 303. A flange member 188 for fixing the ceramic pipe 303 is interposed between the first flange 186 and the second flange 187.
[0123]
FIG. 18 is a sectional view showing still another embodiment of the container.
[0124]
In this embodiment, the refractory material 402 has a convex portion 406 from the bottom toward the inside of the container as a lining (see, for example, FIG. 9). The convex portion 406 has a flow path 403 therein, and the flow path 403 is formed of silicon nitride. And the like. The pipe 404 is embedded in the refractory material 402 via the filler 405. The filler 405 has lower strength than the refractory 402. For example, a mixture of alumina and silica-based ceramic fibers and a binder material can be used. The piping 404 made of ceramics has good fire resistance, and there is no need to provide a fire-resistant material on the inner wall. Also in the present embodiment, an R-shaped pipe made of, for example, iron is connected to an upper portion of the flow path 403. Reference numeral 405b is a heat insulating material for keeping the flange portion of the pipe 404 warm, and is filled with, for example, ceramic fibers.
[0125]
The container 401 has a structure in which a heat insulating material 272 and a refractory material 273 are laminated as a lining inside a frame 271. A board material 274 is interposed between the heat insulating material 272 and the refractory material 273 at a predetermined position. In the container 401, a large lid 278 is disposed in an upper opening 277 of a bottomed and cylindrical main body 407, and the main body 407 and the large lid 278 are fixed by tightening bolts between these flanges.
[0126]
An opening 279 is provided substantially at the center of the large lid 278, and a hatch 280 that can be opened and closed is disposed in the opening 279. At the center of the hatch 280 or at a position slightly deviated from the center, a through hole 281 for adjusting the internal pressure for reducing and increasing the pressure in the container 401 is provided. A piping (not shown) for pressurization and decompression is connected to the through hole 281.
[0127]
A pair of through holes 282 into which electrode rods (not shown) for detecting a liquid level are inserted are provided at positions slightly deviated from the center of the hatch 280 and opposed to the through holes 281 for pressurizing and depressurizing. Have been.
[0128]
On the bottom rear surface of the main body 401, for example, two legs (not shown) having a mouth-shaped cross section into which a fork (not shown) of a forklift is inserted are arranged in parallel, for example.
[0129]
Here, the channel 403 is surrounded by a pipe 404 made of a ceramic such as silicon nitride. The pipe 404 is embedded in the refractory material 402 via the filler 405. The filler 405 has lower strength than the refractory 402. The piping 404 made of ceramics has good fire resistance, and there is no need to provide a fire-resistant material on the inner wall. Thereby, the heat resistance of the pipe 404 is improved. Here, the strength mainly refers to a bending strength against external mechanical stress, and the strength is relatively low when the bulk specific gravity is large. As the lining 272, for example, a dense refractory ceramic material can be cited, and the filler 405 having a lower strength is made of, for example, a ceramic fiber and a binder.
[0130]
The flow path 403 thus surrounded by the pipe 404 extends toward the upper part of the outer periphery of the main body 401 via the opening 285 provided at a position near the bottom of the main body of the main body 401. .
[0131]
In the present invention, in order to positively supply heat from the storage portion of the molten metal in the container to the pipe 286 side as the flow path, the above-mentioned raised portion 402 is provided inside the lining 273, and a tunnel is provided in the raised portion like a tunnel. A hole serving as a flow path is provided. Further, in the present invention, in order to prevent the gas caused by cracks in the lining, etc., from entering into the flow path of the molten metal (for example, molten aluminum alloy, molten magnesium alloy, etc.) in the frame (pressurized gas is likely to enter. ), A rigid pipe such as a ceramic pipe 286 is employed to prevent gas from entering, and a method of fixing the pipe 286 has a replaceable cartridge structure. By using a cartridge structure for the piping, it is necessary to rebuild almost the entire lining of the container every time the piping 286 is replaced, resulting in a very high cost. However, the piping is formed in a cartridge structure as in the present invention. This makes it possible to simply and inexpensively replace only the piping. Further, the pipe holding layer 405 has a lower rigidity and strength than a frame lining caster or a pipe, so that the pipe holding layer also functions as a layer for relieving stress caused by thermal deformation of the pipe.
[0132]
FIG. 21 is a cross-sectional view showing the structure of the upper end of the pipe 404, and FIG. 22 is a schematic plan view of the structure of the upper end of the pipe 404 of FIG.
[0133]
The pipe 404 is embedded in the lining layer including the layer made of the refractory material 402 via the filler 405 which is a pipe holding layer as described above. In other words, the pipe 404 is inserted into the hole 411 provided in the refractory material 402. A filler 405 is interposed between the hole 411 and the pipe 404 as a pipe holding layer.
[0134]
The pipe 404 has a flange 412 on the upper surface side of the container 401. For example, three holding claws 414 for holding the back surface 413 of the flange 412 project from the inner wall of the frame 271. This claw may be formed of a member such as a round bar of an iron alloy.
[0135]
A flange 415 is provided on the upper surface of the container 401 so as to surround the flange 412 as the first flange and to have a flange receiving surface at a position higher than the height of the surface of the flange 412. A flange 417 of a pipe 416 communicating with the flow path 403 is fixed to the flange 415 by, for example, a bolt or a clamp. In the pipe 416, a refractory material 416b is formed on the inner wall of the steel shell 416a. That is, the flange surface (lower surface) of the flange 417 (second flange) of the pipe 416 and the flange surface (upper surface) of the first flange are separated by the interval t1. If t1 is set to 1 mm to 5 mm, sufficient stress relaxation ability and heat insulation ability are exhibited. Further, since the pipe holding layer 405 has lower rigidity and strength than the caster of the lining of the frame and the pipe, the pipe holding layer also functions as a layer for relieving stress caused by thermal deformation of the pipe.
[0136]
A packing 418 having a first thickness t1 is interposed between the surface of the flange 412 and the surface of the flange 417, and the first thickness t1 is provided between the surface of the flange 415 and the surface of the flange 417. A packing 419 having a smaller second thickness t2 is interposed. These packings may be selected from those having heat resistance. Further, for example, a sheet-like heat insulating member 420 (for example, ceramic paper) is inserted between the back surface of the flange 412 and the holding claw 414. Thereby, the heat insulation between the claw portion 414 and the first pipe is improved.
[0137]
In the present embodiment, the pipe 404 is not in contact with the frame 271 having high thermal conductivity, particularly due to the above structure. In particular, the flange 412 is held by the holding claws 414. Therefore, since the heat held by the pipe 404 is not easily diffused, a decrease in the temperature of the pipe 404 can be suppressed. Therefore, clogging of the pipe 404 can be prevented. In this embodiment, the packing 418 between the surface of the flange 412 and the surface of the flange 417 is particularly thicker than the packing 419 between the surface of the flange 415 and the surface of the flange 417. The degree of freedom of the flange 412 is high. Therefore, cracks in the pipe 414, particularly near the flange 412, can be suppressed as much as possible. This can prevent gas from leaking from the inside of the container.
[0138]
Here, reference numeral 430 is a hole for injecting the filler 405, and reference numeral 431 is a hole for letting out gas when the filler 405 is injected from the hole 430. The holes 430 and 431 are closed by caps 432 and 433. Thus, it is preferable to provide at least two holes. This is because when the filler is injected through one hole, the gas is released through the other hole, and the completion of the filling can be known.
[0139]
FIG. 23 is a view showing another example of the container of the present invention. FIG. 23 is also an enlarged longitudinal sectional view of the flow path of the container and the pipe connected to the flow path, similarly to FIG.
[0140]
The vessel of this example also employs a rigid pipe made of ceramics such as SiN or SiC as the first pipe, and has a filler 405 as a pipe holding layer. A lower portion of the filler 405 is provided with an impregnated layer 405b in which the filler is impregnated with a mixture of aluminum oxide and aluminum. The mixture of aluminum and aluminum oxide is not necessarily high in rigidity, but is tough and very strong. It also has the ability to follow deformation. Therefore, if such an impregnated layer 405b is provided as a pipe holding layer, the stress relaxation ability can be further improved.
[0141]
Further, in this example, the outer diameter of the pipe 404 is straight (uniform except for the flange portion), but the inner diameter has a narrow upper portion and a wide taper structure at the lower portion. Thereby, the strength of the pipe 404 is improved. Even in such a case, the inner diameter is preferably about 60 mm to 85 mm as described above. In this example, w1 is set to 60 mm and w2 is set to 80 mm. When the supply is completed by increasing the diameter of the lower portion, even if the temperature drops at the lower portion of the container and a highly viscous molten metal remains, clogging or the like can be prevented from occurring.
[0142]
FIG. 19 is a sectional view showing still another embodiment of the container.
[0143]
In this embodiment, the main body 502 has a protrusion 503 that protrudes like a dew opening (a protrusion that gradually protrudes from the lower part to the upper part toward the outer peripheral side from the lower part of the cylindrical side surface). The protruding portion 503 has a flow path 504 therein, and the flow path 504 is covered with a pipe 505 made of ceramics such as silicon nitride. The pipe 505 is embedded in the refractory material 373 via the filler 506. The filler 506 has lower strength than the refractory 373. The ceramics pipe 505 has good fire resistance, so that it is not necessary to provide another fire-resistant material on the inner wall. Also in the present embodiment, an R-shaped pipe made of, for example, iron is connected to the upper part of the flow path 504.
[0144]
In the container 501, a large lid 378 is disposed in an upper opening 377 of a bottomed and cylindrical main body 502, and the main body 502 and the large lid 378 are fixed by tightening bolts between these flanges.
[0145]
The hatch 380 can be opened from the opening 379 of the large lid 378 by reversing the rotation of the bolt with the handle to release the fastening. Then, with the hatch 380 opened, maintenance inside the container 501 and insertion of the gas burner during preheating are performed through the opening 379.
[0146]
An opening 379 is provided substantially at the center of the large lid 378, and a hatch 380 that can be opened and closed is disposed in the opening 379. At the center of the hatch 380 or at a position slightly deviated from the center, a through hole 381 for adjusting the internal pressure for reducing and increasing the pressure in the container 501 is provided. A piping (not shown) for pressurization and decompression is connected to the through hole 381. At the end of the pipe, a tank for storing pressurized gas and a pump for pressurization are connected to the pipe for pressurization, and a pump for pressure reduction is connected to the pipe for pressure reduction.
[0147]
A portion of the large lid 378 adjacent to the hatch 380 is provided with a through hole 382 for releasing pressure. A relief valve (not shown) is attached to the pressure release through hole 382. Thereby, for example, when the pressure inside the container 501 becomes equal to or higher than a predetermined pressure, the inside of the container 501 is opened to the atmospheric pressure from the viewpoint of safety.
[0148]
The large lid 378 may be provided with a through hole (not shown) for a liquid level sensor into which an electrode as a liquid level sensor is inserted. Then, by monitoring the conduction state between the electrodes, it is possible to detect the maximum liquid level of the molten metal in the container 501, so that the excessive supply of the molten metal to the container 501 can be more reliably prevented. Has become.
[0149]
On the bottom rear surface of the main body 502, for example, two legs (not shown) each having a mouth-shaped cross section into which a fork (not shown) of a forklift is inserted are arranged so as to be parallel, for example.
[0150]
The flow path 504 thus surrounded by the pipe 505 extends toward the upper part of the outer periphery of the main body 502 via the opening 385 provided at a position near the bottom of the main body of the main body 502. .
[0151]
A first flange 386 is provided at an upper end portion of the pipe 505, and a second flange 387 facing the lower surface of the first flange 386 is provided on the frame 371 so as to surround the pipe 505. A flange member 388 for fixing the ceramic pipe 505 is interposed between the first flange 386 and the second flange 387. Reference numeral 389 is a hole for injecting the filler 506.
[0152]
In FIG. 19, the lower end of the pipe 505 is also in contact with the inner wall of the container, but these may be separated from each other.
[0153]
FIG. 20 is a sectional view showing another embodiment of the container.
[0154]
In the present embodiment, the outer periphery of the main body 601 has a protruding portion 602 that protrudes like a dew opening (a protruding portion that gradually protrudes upward from the lower opening 607 on the side surface of the cylinder toward the upper side). The channel 603 is provided inside the protruding portion 602. A pipe 604 is embedded in and fixed to a part of the flow path 603 (here, at the bottom). The portion of the flow path 603 in which the pipe is embedded is a place where a crack may occur in the refractory material 402 or the lining 403 (for example, a portion denoted by reference numeral 605), and the pressurized gas flows from the crack due to the presence of the pipe. Can be prevented. The pipe 604 is preferably embedded in the refractory material 402 or the lining 403 when the container 601 is molded. Also in the present embodiment, for example, iron Τ-shaped or R-shaped piping, not shown, and a piping having a reducer are connected to the upper portion of the flow path 603. Also in this connection, connection may be made by bolting between flanges via packing. This pipe may be rotatable. As a rotatable mechanism, for example, one point of a flange at a connection portion of the pipe with the container is rotatably connected to a flange on the container side, and the flange of the pipe and the flange on the container side are fixed by a clamp mechanism. You may. This makes it possible to form a container having a small turning radius and good handling. In addition, by making the pipe rotatable in this way, maintenance of the flow path on the container side can be easily performed. On the container side, a holding member for holding the pipe that has been rotated and bent may be provided. At this time, the holding member may be provided with a means for fixing the pipe.
[0155]
In the container 601, a large lid 408 is arranged in an upper opening 407 of a bottomed, cylindrical main body 606, and the main body 606 and the large lid 408 are fixed by tightening bolts between these flanges.
[0156]
The hatch 410 can be opened from the opening 409 of the large lid 408 by rotating the bolt with the handle in the reverse direction to release the fastening. Then, maintenance of the inside of the container 601 and insertion of the gas burner at the time of preheating are performed through the opening 409 with the hatch 410 opened.
[0157]
An opening 409 is provided substantially at the center of the large lid 408, and a hatch 410 that can be opened and closed is disposed in the opening 409. At the center of the hatch 410 or at a position slightly deviated from the center, a through hole 404 for adjusting the internal pressure for reducing and increasing the pressure in the container 501 is provided. A piping (not shown) for pressurization and decompression is connected to the through hole 404.
[0158]
A portion of the large lid 408 adjacent to the hatch 410 is provided with a through hole 412 for releasing pressure. A relief valve (not shown) is attached to the through-hole 412 for releasing pressure. Thereby, for example, when the pressure inside the container 601 becomes equal to or higher than a predetermined pressure, the inside of the container 601 is opened to the atmospheric pressure from the viewpoint of safety.
[0159]
Further, a through hole for a liquid level sensor into which an electrode serving as a liquid level sensor is inserted may be arranged on the large lid 408 (both are not shown). By monitoring the conduction state between the electrodes, it is possible to detect the maximum liquid level of the molten metal in the container 601 so that the excessive supply of the molten metal to the container 601 can be more reliably prevented. Has become.
[0160]
On the bottom rear surface of the main body 602, for example, two legs (not shown) having a mouth-shaped cross section into which a fork (not shown) of a forklift is inserted are arranged so as to be parallel, for example.
[0161]
Next, still another embodiment of the present invention will be described.
[0162]
24 and 25 are diagrams showing the configuration of a pipe inserted into the flow channel according to this embodiment. FIG. 24 is a cross-sectional view as viewed from the front, and FIG. 25 is a cross-sectional view as viewed from above. Although the pipe according to this embodiment is assumed to be used as the pipe 134 of the container 101 shown in FIGS. 7 to 9, it is needless to say that the pipe can be used for another type of container.
[0163]
The pipe 134 is made of, for example, iron, and a lining layer 701 made of a refractory material is formed inside the pipe 134. Inside the lining layer 701, a flow path 702 of molten metal, for example, molten aluminum is formed. A preferable value of the diameter of the flow path 702 is, for example, about 65 mm to 80 mm. The materials of the pipe 134 and the lining layer 702 are, for example, as already disclosed. In the pipe 134 according to this embodiment, a holding member 703 for holding the refractory material as the lining layer 702 is provided protruding inside the pipe 134. The holding member 703 is configured by, for example, connecting an iron bar to the inner wall of the pipe 134 by welding so as to form a V-shape. For example, V-shaped iron bars are provided at four locations at 90 ° intervals. Further, the holding member 703 is provided at a lower side of the pipe 134, more preferably at a position near the lower end of the pipe 134, and at other positions, for example, at an upper side inside the pipe, the holding member 703 may be provided. A prohibited area 704 is prohibited.
[0164]
In the present embodiment, it is possible to prevent the refractory material, which is the lining layer 702, from falling off from the pipe 134. Further, since such a holding member 703 is provided below the pipe 134, for example, at a position near the lower end of the pipe 134, even if the lining layer 702 above it is cracked, the lining layer 702 can be used. It will not fall off. By providing the holding member 703 at a position near the lower end of the pipe 134, the area for preventing falling off can be widened, and welding work of the holding member 703 can be facilitated. Further, the upper side inside the pipe 134 provided with the holding member 703 is provided with a forbidden region 704 where the holding member is prohibited, thereby causing a difference in thermal expansion coefficient between the pipe 134 and the lining layer 702. It is possible to prevent cracking and deformation of these members.
[0165]
Next, another embodiment of the present invention will be described.
FIG. 26 and FIG. 27 are views showing the configuration of the container according to this embodiment. FIG. 26 is a sectional view seen from the front, and FIG. 27 is a partial sectional view seen from the plane. In this container 800, the same components as those shown in FIGS. 7 to 9 are denoted by the same reference numerals.
[0166]
That is, this container 800 is provided with a lining 101b having a convex portion 101c which is a protruding portion inward along the vertical direction inside the frame 101a. The lining 101b preferably has a laminated structure of a refractory layer and a heat insulating layer. These materials may be the same as in the above embodiment.
[0167]
A flow path 109 penetrating from a position near the inner bottom of the container 800 to the upper surface side of the container 101 is provided in the convex portion 101c. The flow path 109 is surrounded by, for example, the pipe 134 shown in FIGS. For example, a pipe 108 is detachably connected to an upper portion of the flow path 109 by, for example, bolting. The pipe 108 is made of, for example, iron, and has a Τ shape, for example.
[0168]
Here, as shown in FIG. 27 in particular, the flow path 109 extends to the lining 101b beyond the convex part 101c which is a protruding part, but the opening 801 which opens to the inside of the container connected to the flow path 109. The portion (provided near the container bottom) does not have such a portion extending to the lining 101b, and as a result, this portion is provided with a stepped portion 802 protruding from the lining 101b. Has become. This stepped portion 802 holds the lower end surface of the pipe 134 in order to maintain a gap (e.g., equivalent to the height of the opening 801) between the bottom surface of the container and the lower end surface of the pipe 134. This constitutes a member (provided integrally with the lining).
[0169]
In the present embodiment, the provision of the stepped portion 802 as a holding member for holding the pipe 134 can prevent the pipe 134 and the lining layer that may be formed inside the pipe from falling off. Also, in the manufacturing process of the container, there is an effect that a jig for fixing the position is not required when the pipe 134 is inserted into the channel 109 and fixed.
[0170]
In this embodiment, the stepped portion 802 is realized by changing the shape of the lining 101b. However, a special holding member may be provided separately from the lining.
[0171]
Next, another embodiment of the present invention will be described.
FIG. 28 is a front sectional view showing the configuration of the container according to this embodiment, and FIG. 29 is a plan view of the container with the lid removed.
[0172]
The container 1001 according to this embodiment has basically the same configuration as the container 301 shown in FIG. 17, except that the pipe 1002 is in contact with a refractory material 173 as a lining. The pipe 1002 is disposed so as to be in contact with the refractory material 173 as a lining along the flow direction of the molten metal in the pipe 1002. The pipe 1002 is made of, for example, metal or ceramics.
[0173]
As described above, in the container 1001 according to the present embodiment, the pipe 1002 is configured to be in contact with the refractory material 173 as the lining, so that the pipe 1002 is located farthest from the gas burner inserted by opening the hatch 180 at the time of preheating. And is less susceptible to thermal influences from the gas burner. Further, since the pipe 1002 is in contact with the refractory material 173 as the lining, it is possible to prevent the pipe from swinging due to, for example, vibration during transportation and leading to mechanical destruction. Furthermore, the remaining hot water in the container 1001 can be efficiently discharged to the outside with the minimum inclination.
[0174]
Next, another embodiment of the present invention will be described.
FIG. 30 is a sectional view of the configuration of the container according to this embodiment as viewed from the front, and FIG. 31 is a plan view of the container with the lid removed.
The container 2001 according to this embodiment has basically the same configuration as the container 1001 shown in FIGS. 28 to 29, but differs in the following points.
[0175]
The large lid 178 in the container 2001 is detachably provided to the container body 2004 so that the pipe 2003 for flowing molten aluminum inside and outside can be removed from the container body 2004 in a state where the pipe 2003 is disposed inside the container body 2004. Have been.
[0176]
Specifically, the pipe 2003 has a flange portion 2002 at a position at the same height as the upper opening plane of the container main body 2004 for holding the pipe 2003 by the upper opening plane of the container main body 2004. The large lid 178 has a through hole 2005 through which the pipe 2003 penetrates. The pipe 2003 is connected to, for example, an R-shaped pipe (not shown, for example, see reference numeral 8 in FIG. 1 and may have a Τ shape), which is not shown, through the through hole 2005. The large lid 178 is detachably provided to the container main body 2004 by fixing the flange on the outer periphery of the large lid 178 and the peripheral flange of the container main body 2004 with bolts.
[0177]
That is, in the container 1001 shown in FIGS. 28 to 29, when the large lid 178 is to be removed from the container main body 305, the pipe 1002 is integrated with the large lid 178 as shown in FIG. As such, removal of the large lid 178 is a daunting task. On the other hand, in the container 2001 according to this embodiment, as shown in FIG. 33, the large lid 178 can be removed with the pipe 2003 left on the container body 2004 side. Therefore, the large lid 178 can be easily removed, and maintenance can be easily performed. This maintenance is, for example, an operation of removing the large lid 178 from the container 2001 and removing slime (aluminum oxide) attached to the inside of the container main body 2004.
[0178]
In addition, in the container 2001 according to this embodiment, as shown in FIG. 31 in particular, the inner periphery of the lining 2006 is formed in a cylindrical shape, but the position where the pipe 2003 contacts is provided with a flat portion 2007 having a flat shape. Have been. The flat portion 2007 is provided with a depression 2008. The recess 2008 has a size substantially equal to the radius of the pipe 2003, and almost half of the pipe 2003 is fitted on the lining 2006 side. As a result, the pipe 2003 is more firmly attached to the lining 2006, and the contact area between the pipe 2003 and the lining 2006 becomes larger.
Note that the pipe 2003 is preferably made of metal or ceramics.
[0179]
Next, still another embodiment of the present invention will be described.
FIG. 34 is a cross-sectional view of the configuration of the container according to this embodiment as viewed from the front, and FIG. 35 is a plan view of the container with the lid removed.
The container 3001 according to this embodiment has basically the same configuration as the container 2001 shown in FIGS. 30 to 31, but differs in the following points.
[0180]
A refractory material 3002 as a lining is provided inside the frame 171. On the inner surface side of the refractory material 3002, a protruding protruding portion 3003 extends in the vertical direction, and inside the protruding portion 3003, there is a flow path 3004 for flowing molten metal inside and outside. In the vicinity of the bottom surface of the container 3001, there is provided an opening 3005 to the inner surface side of the container 3001 communicating with the flow path 3004. The pipe 3006 is inserted into the flow path 3004. The pipe 3006 is exposed to the inside of the container 3001 at the opening 3005. The raised portion near the lower opening surface of the pipe has a tapered shape so that the inside of the container is widened. This improves the accessibility of the lower part of the pipe from the inside of the container during maintenance of the container. Thereby, the heat of the molten aluminum in the container 3001 is conducted from the exposed portion of the pipe to the entire pipe 3006, and the clogging of the molten aluminum flowing through the pipe 3006 can be prevented.
[0181]
Also in the container 3001 according to the present embodiment, as shown in FIG. 36, the large lid 178 can be removed with the pipe 3006 left on the container main body 3007 side. Therefore, the large lid 178 can be easily removed, and maintenance can be easily performed.
Note that the pipe 3006 is preferably made of metal or ceramics.
[0182]
【The invention's effect】
As described above, according to the present invention, the gas for pressurization does not leak into the flow path for flowing the molten metal inside and outside. Therefore, safe and stable supply of the molten metal can be performed. Further, the quantitativeness of the supply of the molten metal can be improved. Further, according to the present invention, since the pipe can be replaced with respect to the container, the maintenance cost of the container can be significantly reduced.
[Brief description of the drawings]
FIG. 1 is a sectional view of a container according to an embodiment of the present invention.
FIG. 2 is a plan view of FIG.
FIG. 3 is a partial sectional view of FIG.
FIG. 4 is a sectional view of a container according to an embodiment of the present invention.
FIG. 5 is a sectional view of a container according to an embodiment of the present invention.
FIG. 6 is a sectional view of a container according to an embodiment of the present invention.
FIG. 7 is a sectional view of a container according to an embodiment of the present invention.
FIG. 8 is a sectional view of a container according to an embodiment of the present invention.
FIG. 9 is a sectional view of a container according to an embodiment of the present invention.
FIG. 10 is a sectional view of a container according to an embodiment of the present invention.
FIG. 11 is a sectional view of a container according to an embodiment of the present invention.
FIG. 12 is a schematic diagram illustrating a configuration of a metal supply system according to an embodiment of the present invention.
FIG. 13 is a diagram schematically showing an example of a container and a melting furnace of the present invention.
FIG. 14 is a view for explaining an example of a metal delivery model using a supply device and a container according to the present invention.
FIG. 15 is a flowchart showing a method of manufacturing a vehicle using the system of the present invention.
FIG. 16 is a sectional view of a container according to an embodiment of the present invention.
FIG. 17 is a sectional view of a container according to an embodiment of the present invention.
FIG. 18 is a sectional view of a container according to an embodiment of the present invention.
FIG. 19 is a sectional view of a container according to an embodiment of the present invention.
FIG. 20 is a sectional view of a container according to an embodiment of the present invention.
21 is a partially enlarged sectional view of the container shown in FIG.
FIG. 22 is a schematic plan view of the structure of the upper end of the pipe of FIG. 21 as viewed from above.
FIG. 23 is a partially enlarged sectional view of a container according to an embodiment of the present invention.
FIG. 24 is a sectional view of a pipe according to another embodiment of the present invention as viewed from the front.
FIG. 25 is a sectional view of the pipe shown in FIG.
FIG. 26 is a front sectional view of a container according to still another embodiment of the present invention.
FIG. 27 is a partial sectional view of the container shown in FIG. 26 as viewed from above.
FIG. 28 is a front sectional view of a container according to another embodiment of the present invention.
FIG. 29 is a plan view showing a state where a lid is removed from the container shown in FIG. 28.
FIG. 30 is a front sectional view of a container according to still another embodiment of the present invention.
FIG. 31 is a plan view showing a state where a lid is removed from the container shown in FIG. 30;
32 is a view showing a state in which the container body and the lid are separated from each other in the container shown in FIG. 28.
FIG. 33 is a view showing a state where the container body and the lid are separated from each other in the container shown in FIG. 30;
FIG. 34 is a cross-sectional view of a container according to still another embodiment of the present invention as viewed from the front.
FIG. 35 is a plan view showing a state where a lid is removed from the container shown in FIG. 34;
36 is a view showing a state in which the container main body and the lid are separated from each other in the container shown in FIG. 34.
[Explanation of symbols]
1, 201, 301, 401, 501, 601 container
1a, 71, 101a, 171, 271, 371, 401 frames
2,72,101b, 172,272,372,403 Lining
5a, 87, 105a, 187, 287, 387, 417 Second flange
9, 75, 109, 302, 403, 504, 603
10, 84, 110, 405, 506 Filler
18, 81, 181, 281, 381, 404 Through-hole
34, 83, 134, 303, 404, 505, 604 Piping
34a, 86, 134b, 186, 286, 386, 418 First flange
34b, 134b, 373, 402 Refractory
101c, 406 convex part in container

Claims (6)

The molten aluminum can be stored, the molten aluminum can be circulated to and from the outside by utilizing a pressure difference, and the molten aluminum is transported to a use point where the molten aluminum is supplied by being mounted on a transportation vehicle and the use is carried out. It is a container independent of points,
Frame and
A lining provided inside the frame and having a flow path for flowing molten aluminum inside and outside,
A pipe made of ceramics provided so as to surround at least a part of the flow path of the molten aluminum ,
A container comprising: The molten aluminum can be stored, the molten aluminum can be circulated to / from the outside by utilizing a pressure difference, and the molten aluminum is transported to a use point where the molten aluminum is supplied by being mounted on a transport vehicle and the use is carried out. It is a container independent of points,
Frame and
A lining provided inside the frame and having a flow path for flowing molten aluminum inside and outside,
A pipe provided so as to surround at least a part of the flow path of the molten aluminum,
With
The container, wherein the pipe is made of metal, and a lining layer made of a refractory material is formed inside the pipe. The molten aluminum can be stored, the molten aluminum can be circulated to / from the outside by utilizing a pressure difference, and the molten aluminum is transported to a use point where the molten aluminum is supplied by being mounted on a transport vehicle and the use is carried out. It is a container independent of points,
Frame and
A lining provided inside the frame and having a flow path for flowing molten aluminum inside and outside,
A pipe provided so as to surround at least a part of the flow path of the molten aluminum,
With
The _{pipe, Si 3 N 4, SiN,} SiC, container, characterized in that it consists of TiO 2, TiN and at least one of which one of the main components ceramics selected from the group consisting of carbon. The flow path internal to the lining has an opening near the bottom in the container, and faces the storage area of the molten aluminum provided inside the lining from the opening toward the upper part of the container. The container according to any one of claims 1 to 3, wherein the container is configured to conduct heat from the storage region. The frame further includes a flange receiving portion such that the upper opening of the flow path of the molten aluminum is near the center thereof, and the inner diameter of the flange receiving portion is larger than the outer diameter of the pipe, and the flange of the pipe has a flange. The container according to any one of claims 1 to 4, further comprising a heat insulating member provided between an outer periphery and the frame. The pipe is any one of the claims 1 to 5, characterized in that the lower end is a single continuous structure where the extended to the opening portion of the storage area side of the molten aluminum of the flow path A container according to claim 1.

Images