A pouring system sprue assembly device for full mold casting and a method of using the same

Abstract

The present invention discloses a pouring system sprue assembly device for full-mold casting and a method for using the same, which belongs to the field of casting, and specifically relates to a pouring system sprue assembly device for lost foam full-mold casting and a method for using the same, comprising a sprue, a sprue seat, a base, a buffer protrusion, a coating layer and a corresponding method for using the same; the present application can ensure that the gap at the connection between the sprue and the sprue seat can be covered by the coating, and workers can use the device more conveniently and quickly; in terms of quality, the defect of sand flushing at the bottom of the sprue during the pouring process can be reduced; in terms of cost, the additional electric energy consumed by melting the impurities of the sprue when it is melted as a return material in the later stage can be reduced; in terms of operation, since the device is easy to operate, the production efficiency of the molder can be greatly improved.

Description

Technical Field

[0001] The invention belongs to the field of casting, and in particular relates to a pouring system sprue assembly device used in lost foam full-mold casting and a use method thereof. Background Art

[0002] Full-mold casting refers to a casting method in which a polystyrene foam plastic pattern is used instead of an ordinary pattern. After the pattern is made, molten metal is poured into it without removing the pattern. Under the action of the molten metal, the plastic pattern burns, vaporizes, and disappears. The molten metal replaces the space occupied by the original plastic mold. After cooling and solidifying, the desired casting is obtained.

[0003] In the full-mold casting production process, a pouring system needs to be designed to introduce liquid metal into the mold cavity. The current commonly used sprue process is to place the sprue vertically into the sand box and place the polystyrene foam block on the top of the sprue. The connection between the sprue and the polystyrene foam cannot be completely close, and needs to be sealed with transparent tape or hot melt adhesive. During the pouring process, the sprue is impacted downward by gravity, and the sand below the sprue is easily washed into the mold from the connection between the sprue and the polystyrene foam, resulting in sand washing defects on the bottom surface of the casting, and the presence of molding sand inside the solidified sprue, which increases the energy consumption when the sprue is melted as a return material in the later stage, and the operation process is also more cumbersome.

[0004] Therefore, there is an urgent need for a technical solution to the above problems in the prior art. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a pouring system sprue assembly device for full-mold casting, reduce the defect of sand flushing below the sprue during the pouring process, improve production efficiency and save production costs.

[0006] A pouring system sprue assembly device for full-mold casting, characterized by comprising a sprue, a sprue seat and a coating layer;

[0007] The sprue is a circular tube structure of high temperature refractory ceramics;

[0008] The sprue seat is an integrated design, including a base and a buffer protrusion;

[0009] The base body is in a rectangular parallelepiped shape, and the buffer protrusion is arranged on the base body;

[0010] The sprue is connected to the sprue seat, and the connection surface is opposite to the surface provided with the buffer protrusion;

[0011] A coating layer is provided on the outer wall of the connection between the sprue and the sprue seat;

[0012] The wall thickness of the sprue is 10 mm-15 mm, and the height of the sprue is 200 mm-300 mm. The coating layer is a graphite-based coating.

[0013] The sprue seat is a polystyrene foam block.

[0014] The height of the buffer protrusion is 30 mm, that is, the distance from the top of the buffer protrusion to the plane of the base body is 30 mm.

[0015] The number of the sprue and the sprue seat is more than one.

[0016] A method for using a pouring system sprue assembly device for full mold casting, characterized in that any one of the above-mentioned pouring system sprue assembly devices for full mold casting is used, characterized in that: the method comprises the following steps, and the following steps are performed in sequence

[0017] Step 1: During the box unloading operation, arrange the pouring system according to the process requirements;

[0018] Step 2, using a ceramic pipe of the same diameter to align and connect with the sprue of the present invention;

[0019] Step 3: Determine the connection position between the sprue seat and the runner in the pouring system, and mark it with a marker;

[0020] Step 4: Remove the coating layer in the marking frame to prevent the molten iron from being blocked or mixed with impurities;

[0021] Step 5: Use tape to glue and fix the connection between the ceramic tube and the sprue, and use hot melt adhesive to seal and glue the edge of the connection between the sprue seat and the cross runner, and then proceed with the subsequent casting process.

[0022] The beneficial effects of the present invention are as follows: the present application can ensure that the gap at the joint between the sprue and the sprue seat can be covered with paint, and workers can use the device more conveniently and quickly; in terms of quality, the defect of sand flushing at the bottom of the sprue during the pouring process is reduced; in terms of cost, the additional electric energy consumed in melting the impurities of the sprue when it is melted as return material in the later stage is reduced; in terms of operation, since the device is easy to operate, the production efficiency of the molder is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The present invention is a perspective view of the entirety of a pouring system sprue assembly device for full mold casting.

[0024] Figure 2 The present invention is a side view of a pouring system sprue assembly device for full mold casting.

[0025] Figure 3 for Figure 2 Middle AA section view.

[0026] In the figure: 1-sprue, 2-sprue seat, 201-base, 202-buffer protrusion, 3-coating layer. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0028] A pouring system sprue assembly device for full-mold casting, characterized by comprising a sprue 1, a sprue seat 2 and a coating layer 3;

[0029] The sprue 1 is a circular tube structure of high temperature refractory ceramics, and the sprue size is selected according to the process requirements during use;

[0030] The sprue seat 2 is an integrated design, including a base 201 and a buffer protrusion 202;

[0031] The base 201 is in a rectangular shape, and the buffer protrusion 202 is arranged on the base 201;

[0032] The sprue 1 is connected to the sprue seat 2, and the connection surface is opposite to the surface provided with the buffer protrusion 202;

[0033] A coating layer 3 is provided on the outer wall of the connection between the sprue 1 and the sprue seat 2;

[0034] The sprue seat 2 is made of polystyrene foam. The upper portion of the sprue seat 2 is vertically connected to the sprue 1 . An arc-shaped buffer groove 6 is provided directly below the lower portion of the sprue seat 2 corresponding to the sprue 1 .

[0035] The wall thickness of the sprue 1 is 10 mm-15 mm, and the height of the sprue 1 is 200 mm-300 mm.

[0036] The coating layer 3 is a graphite-based coating.

[0037] The sprue seat 2 is a polystyrene foam block.

[0038] The height of the buffer protrusion 202 is 30 mm, that is, the distance from the top of the buffer protrusion 202 to the plane of the base 201 is 30 mm.

[0039] The number of the sprue 1 and the number of the sprue seat 2 are both more than one.

[0040] In order to facilitate use in the production process, the device of the present invention can be mass-produced before production. During the installation of the casting system, the present invention can be directly arranged in the casting system, the coating layer 3 at the corresponding position of the connection between the straight runner seat 2 and the cross runner is removed, and then it is bonded to the cross runner. After it is firmly installed, the subsequent casting process can be carried out.

[0041] By providing a pouring system sprue assembly device for full-mold casting, the device of the present invention can be mass-produced before production, so that the gap between the sprue and the sprue seat can be covered with paint, and workers can use the device more conveniently and quickly. In terms of quality, the defect of sand flushing below the sprue during the pouring process is reduced; in terms of cost, the additional electric energy consumed by melting the impurities of the sprue as a return material in the later stage is reduced; in terms of operation, since the device is easy to operate, the production efficiency of the molder is greatly improved.

[0042] A method for using a pouring system sprue assembly device for full mold casting, characterized in that any one of the above-mentioned pouring system sprue assembly devices for full mold casting is used, characterized in that: the method comprises the following steps, and the following steps are performed in sequence

[0043] Step 1: During the box unloading operation, arrange the pouring system according to the process requirements;

[0044] Step 2: Use a ceramic pipe with the same diameter to align and connect with the sprue 1 of the present invention;

[0045] Step 3, determine the connection position between the sprue seat 2 and the cross runner in the pouring system, and mark it with a marker;

[0046] Step 4: Remove the coating layer 3 in the marking frame to prevent the molten iron from being blocked or mixed with impurities;

[0047] Step 5: Use adhesive tape to bond the connection between the ceramic tube and the sprue 1, and use hot melt adhesive to seal the edge where the sprue seat 2 and the cross runner are connected, and then carry out the subsequent casting process.

Claims

1. A pouring system sprue assembly device for full mold casting, characterized by: It comprises a sprue (1), a sprue seat (2) and a coating layer (3); The sprue (1) is a circular tube structure of high temperature refractory ceramics; The sprue seat (2) is an integrally formed design, comprising a base (201) and a buffer protrusion (202); The base (201) is in the shape of a rectangular parallelepiped, and the buffer protrusion (202) is arranged on the base (201); The sprue (1) is connected to the sprue seat (2), and the connection surface is opposite to the surface provided with the buffer protrusion (202); A coating layer (3) is provided on the outer wall of the connection between the sprue (1) and the sprue seat (2); The wall thickness of the sprue (1) is 10 mm to 15 mm, and the height of the sprue (1) is 200 mm to 300 mm; The coating layer (3) is a graphite-based coating; and the sprue seat (2) is a polystyrene foam block.

2. A pouring system sprue assembly device for full mold casting according to claim 1, characterized in that: The height of the buffer protrusion (202) is 30 mm, that is, the distance from the top of the buffer protrusion (202) to the plane of the base (201) is 30 mm.

3. A pouring system sprue assembly device for full mold casting according to claim 1, characterized in that: The number of the sprue (1) and the sprue seat (2) is more than one.

4. A method for using a pouring system sprue assembly device for full mold casting, using a pouring system sprue assembly device for full mold casting as claimed in any one of claims 1 to 3, characterized in that: The following steps are included, and the following steps are performed in sequence Step 1: During the box unloading operation, arrange the pouring system according to the process requirements; Step 2: Use a ceramic pipe with the same diameter to align and connect with the sprue (1); Step 3, determine the connection position between the sprue seat (2) and the cross runner in the pouring system, and mark it with a marker; Step 4: Remove the coating layer (3) in the marking frame to prevent the molten iron from being blocked or mixed with impurities; Step 5: The ceramic tube and the sprue (1) are fixed at their connection positions with adhesive tape, and the edges of the sprue seat (2) and the cross runner are sealed and bonded with hot melt adhesive, followed by subsequent casting process.

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