Cylindrical ball riser and gating system using same

Abstract

The utility model discloses a cylindrical ball riser and a gating system using the same, the cylindrical ball riser comprises a spherical riser and a cylindrical riser neck, the riser neck and the spherical riser are integrally connected, the center of the spherical riser coincides with the axis of the riser neck, the spherical riser is provided with a first plane, and the first plane is provided with a second plane. A second plane is arranged on the riser neck; the pouring system comprises a casting and the cylindrical ball riser, the casting is connected with a vertical pouring gate, the upper end of the vertical pouring gate is connected with a pouring cup, the vertical pouring gate is connected with a transverse pouring gate, the transverse pouring gate is in butt joint with the second plane, and a hot spot dispersing part of the casting is connected with the first plane. According to the utility model, the process of wrapping heat insulation cotton on the riser is omitted, the casting can be effectively fed, the internal quality of the casting is ensured, and the requirements of customers are met; meanwhile, the labor intensity of workers is reduced, the use consumption of the heat preservation cotton is reduced, the production cost is reduced, and the harm of the heat preservation cotton to a human body is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of precision casting, in particular to a cylindrical ball riser and a pouring system using the ball riser. Background Art

[0002] Riser is a cavity in the mold used to store molten metal. It replenishes metal during the formation of the casting and has the function of preventing shrinkage, shrinkage, exhaust and slag collection. During the solidification process of the casting, if the volume lost during the liquid shrinkage and solidification shrinkage stages is not replenished, defects such as shrinkage, shrinkage and porosity will occur in the casting.

[0003] During casting, for castings with complex shapes and dispersed heat nodes, the riser is usually wrapped with insulation cotton to enhance the shrinkage compensation effect of the riser. The insulation cotton is not only very harmful to the human body, but also has an impact on the environment. At the same time, the use of insulation cotton is one-time, which consumes a lot and leads to high costs. For such castings, this application proposes a cylindrical ball riser and a pouring system using the ball riser to solve the above problems. Utility Model Content

[0004] The main purpose of the utility model is to provide a cylindrical ball riser and a pouring system using the ball riser, which can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a cylindrical spherical riser, which includes a spherical riser and a cylindrical riser neck, the riser neck is integrally connected to the spherical riser and the center of the spherical riser coincides with the axis of the riser neck, the spherical riser is provided with a first plane, and the riser neck is provided with a second plane.

[0006] Preferably, the junction between the spherical riser and the riser neck is an arc chamfered structure.

[0007] Preferably, a first connecting block is integrally connected to one side of the spherical riser, and a side surface of the first connecting block facing away from the spherical riser is a first plane.

[0008] Preferably, the shape of the first plane is a trapezoid.

[0009] Preferably, a slag collecting groove is provided on one side of the bottom surface of the first connecting block close to the first plane.

[0010] Preferably, the upper surface of the first connecting block is inclined downward.

[0011] Preferably, a second connecting block is integrally connected to the riser neck, and a side surface of the second connecting block facing away from the riser neck is a second plane.

[0012] Preferably, the ratio of the radius of the riser neck to the radius of the spherical riser is 1:2.

[0013] In addition, the utility model also provides a pouring system, which includes a casting and the above-mentioned cylindrical ball riser, the casting is connected to a vertical runner, the upper end of the vertical runner is connected to a pouring cup, the vertical runner is connected to a horizontal runner, the horizontal runner is connected to the second plane, and the heat node dispersion part of the casting is connected to the first plane.

[0014] Compared with the traditional technology, the beneficial effects produced by the utility model are as follows: the utility model adopts a spherical riser and a cylindrical riser neck combination to replace the original square riser, eliminating the process of wrapping the riser with insulation cotton, and can effectively compensate for the shrinkage of the casting, thereby ensuring the internal quality of the casting and meeting the requirements of customers; at the same time, it reduces the labor intensity of workers, saves the use and consumption of insulation cotton, reduces production costs, and also reduces the harm of insulation cotton to the human body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the cylindrical ball riser structure of the utility model;

[0016] Figure 2 for Figure 1 Front view of the diagram;

[0017] Figure 3 for Figure 1 Schematic side view of

[0018] Figure 4 This is a schematic diagram of the pouring system connection of the utility model;

[0019] Figure 5 for Figure 4 Cross-sectional view of the solidification simulation of the gating system in .

[0020] In the figure: 1. spherical riser; 2. riser neck; 3. arc chamfer structure; 4. first connecting block; 41. first plane; 42. slag collecting trough; 5. second connecting block; 51. second plane; 6. casting; 7. vertical runner; 8. pouring cup; 9. horizontal runner. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] Example 1

[0023] like Figure 1-3As shown, this embodiment provides a cylindrical spherical riser, which includes a spherical riser 1 and a cylindrical riser neck 2. The riser neck 2 is integrally connected to the spherical riser 1 and the center of the spherical riser 1 coincides with the axis of the riser neck 2. A first plane 41 is provided on the spherical riser 1, and a second plane 51 is provided on the riser neck 2. The first plane 41 is used to connect to the hot spot of the casting 6, and the second plane 51 is used to connect to the outer runner of the casting 6.

[0024] Specifically, the intersection of the spherical riser 1 and the riser neck 2 is an arc chamfered structure 3 , and the chamfer radius is 2-10 cm, which is selected according to the actual radius of the riser neck 2 .

[0025] A first connecting block 4 is provided on one side of the spherical riser 1, and a side of the first connecting block 4 facing away from the spherical riser 1 is a first plane 41. The shape of the first plane 41 is a trapezoid, and it is an isosceles trapezoid, and the lower opening size is larger than the upper opening size. A slag collecting groove 42 is provided on the bottom surface of the first connecting block 4 near the first plane 41. When the molten metal of the external pouring channel flows into the casting 6, the precipitated debris in the molten metal is collected through the slag collecting groove 42, so as to improve the purity of the molten metal and further improve the internal quality of the casting 6. In addition, the upper surface of the first connecting block 4 is tilted downward.

[0026] The riser neck 2 is provided with a second connecting block 5 which is connected as a whole. The side of the second connecting block 5 which faces away from the riser neck 2 is a second plane 51 . The second connecting block 5 is a rectangular block and the plane size of the second plane 51 is consistent with the end face size of the runner 9 .

[0027] In this example, the ratio of the radius of the riser neck 2 to the radius of the spherical riser 1 is 1:2. In specific cases, other ratios such as 3:4 or 2:3 may be used.

[0028] Example 2

[0029] In this example, if Figure 4 As shown, a casting system is provided, which includes a casting 6 and the above-mentioned cylindrical ball riser, a vertical runner 7 is connected to the casting 6, a pouring cup 8 is connected to the upper end of the vertical runner 7, a horizontal runner 9 is connected to the vertical runner 7, the horizontal runner 9 is connected to the second plane 51, and the heat node dispersion part of the casting 6 is connected to the first plane 41.

[0030] With the help of MAGMA simulation software, the simulation results of the group tree are qualified. Figure 5 As shown, from the simulated temperature field, the gray part in the figure is the solid area; the green is the solidification area between the liquid and solid phase lines, where solidification is occurring; the white and yellow are liquid metals.

[0031] During production, after the mold is completely solidified after pouring, the cylindrical spherical riser is cut off, and the cylindrical spherical riser is dissected and analyzed to observe the shrinkage state of the liquid in the riser. From the shrinkage of the molten steel in the riser, the molten steel shrinks to the top of the sphere, and there is a safe distance between the riser and the contact point of the casting 6. The casting 6 is dense, so it is concluded that the size of the riser is sufficient to compensate for the shrinkage of the casting; due to the complex structure of the inner cavity of this casting and the uneven wall thickness, it is difficult to detect the internal quality by radiographic detection. Therefore, after the casting 6 is qualified, this part is dissected and subjected to penetration testing. From the test results, the internal organization of the casting 6 is dense and no defects are found.

[0032] The spherical riser 1 and the cylindrical riser neck 2 are combined to replace the original square riser, eliminating the process of wrapping the riser with insulation cotton, which can effectively compensate for the shrinkage of the casting 6, ensure the internal quality of the casting 6, and meet the requirements of customers; at the same time, the labor intensity of workers is reduced, the use and consumption of insulation cotton is saved, the production cost is reduced, and the harm of insulation cotton to the human body is reduced.

[0033] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above description is illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A cylindrical ball riser, characterized in that: It comprises a spherical riser and a cylindrical riser neck, wherein the riser neck is integrally connected with the spherical riser and the center of the spherical riser coincides with the axis of the riser neck, the spherical riser is provided with a first plane, and the riser neck is provided with a second plane.

2. A cylindrical ball riser according to claim 1, characterized in that: The junction between the spherical riser and the riser neck is an arc chamfered structure.

3. The cylindrical ball riser according to claim 1, characterized in that: A first connecting block is integrally connected to one side of the spherical riser, and a side surface of the first connecting block facing away from the spherical riser is a first plane.

4. A cylindrical ball riser according to claim 3, characterized in that: The first plane is in a trapezoidal shape.

5. The cylindrical ball riser according to claim 3, characterized in that: A slag collecting groove is provided on one side of the bottom surface of the first connecting block close to the first plane.

6. The cylindrical ball riser according to claim 3, characterized in that: The upper surface of the first connecting block is inclined downward.

7. The cylindrical ball riser according to claim 1, characterized in that: The riser neck is provided with a second connecting block which is connected as an integral body, and a side surface of the second connecting block which is away from the riser neck is a second plane.

8. The cylindrical ball riser according to claim 1, characterized in that: The ratio of the radius of the riser neck to the radius of the spherical riser is 1:

2.

9. A pouring system, characterized in that: The pouring system includes a casting and a cylindrical ball riser as described in any one of claims 1 to 8, wherein the casting is connected to a vertical runner, the upper end of the vertical runner is connected to a pouring cup, the vertical runner is connected to a horizontal runner, the horizontal runner is connected to the second plane, and the heat node dispersion part of the casting is connected to the first plane.

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