Horizontal pouring device for special-shaped cylindrical steel castings

Abstract

The horizontal pouring device comprises a pouring device body, a pouring table, a pouring cavity and a dead head, the pouring device body is used for enabling pouring liquid to enter the pouring cavity through the pouring table, multiple pieces of pouring liquid enter the dead head through the pouring cavity, and the pouring cavity is horizontally arranged on the pouring table in the horizontal direction. The casting is horizontally poured, the stability in the pouring process is good, and the problem that the wall thickness size of the casting is out of tolerance or the defect of shrinkage cavity and shrinkage porosity of the casting is caused by contradiction and conflict between the stability of a loam core of a middle cavity in the mold closing and box matching pouring process and riser arrangement and feeding is effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of casting steel parts, in particular to a horizontal casting device for special-shaped cylindrical steel parts. Background Art

[0002] Vertical pouring is generally used for cylindrical steel castings. Vertical pouring: The casting is poured in an upright position, with a riser placed on the top to compensate for shrinkage, and the solidification sequence is from bottom to top.

[0003] For special-shaped steel castings with large cylinder taper and large difference in external dimensions between the large and small ends, if the vertical pouring process is adopted, the stability of the mud core forming the middle cavity during the mold and box pouring process will be inconsistent and conflicting with the riser setting and shrinkage compensation, resulting in excessive wall thickness of the casting or shrinkage defects in the casting. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a horizontal pouring device for special-shaped cylindrical steel castings.

[0005] The present invention provides a horizontal pouring device for special-shaped cylindrical steel castings, which adopts the following technical solution:

[0006] A horizontal pouring device for special-shaped cylindrical steel castings comprises a pouring device, a pouring platform, a pouring cavity and a riser. The pouring device is used to allow pouring liquid to enter the pouring cavity through the pouring platform. Multiple pouring liquids enter the riser through the pouring cavity. The pouring cavity is horizontally arranged on the pouring platform along the horizontal direction.

[0007] Optionally, the casting cavity includes a mud core, the central position of the mud core is hollow, and the mud core is arranged on the casting platform.

[0008] Optionally, the casting platform includes a transition gate, and the casting device allows the casting liquid to enter the casting cavity through the transition gate.

[0009] Optionally, the casting platform further comprises a bottom pouring reverse showering ingate, and the casting device allows the casting liquid to enter the casting cavity through the transition ingate and the bottom pouring reverse showering ingate in sequence.

[0010] Optionally, the riser includes an open riser, and the open riser is arranged at the top of the casting cavity.

[0011] Optionally, the longitudinal section formed between the transition gate and the bottom injection reverse rainout gate is T-shaped.

[0012] Optionally, the riser includes a blind seam riser, and the blind seam riser is arranged at the transition gate.

[0013] Optionally, the riser comprises a spherical blind riser, and the spherical blind riser is arranged on the outer contour of the casting cavity.

[0014] Optionally, the riser includes a spherical blind riser, the spherical blind riser is arranged on the outer contour of the casting cavity, and a filtering device is arranged between the straight runner and the cross runner.

[0015] Optionally, a formed chill is provided between the bottom of the casting cavity and the bottom pouring anti-rainfall ingate.

[0016] In summary, the present invention includes at least one of the following beneficial technical effects: the casting is poured horizontally, and the stability during the pouring process is good, which effectively avoids the contradiction and conflict between the stability of the mud core in the middle cavity during the mold and box pouring process and the riser setting and shrinkage compensation, resulting in the problem of excessive wall thickness of the casting or shrinkage defects in the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention.

[0019] Explanation of the accompanying drawings: 1. straight runner; 2. horizontal runner; 3. filtering device; 4. transition gate; 5. bottom injection anti-rainfall gate; 6. casting cavity; 7. open riser; 8. hidden seam hidden riser; 9. spherical hidden riser; 10. forming chill. DETAILED DESCRIPTION

[0020] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0021] The following is combined with Figure 1 The present invention is described in further detail.

[0022] The embodiment of the invention discloses a horizontal pouring device for special-shaped cylindrical steel castings.

[0023] Reference Figure 1A horizontal pouring device for special-shaped cylindrical steel castings includes a pouring device, a pouring platform, a pouring cavity 6 and a riser. The pouring device is used to allow pouring liquid to enter the pouring cavity 6 through the pouring platform, and multiple pouring liquids enter the riser through the pouring cavity 6. The pouring cavity 6 is horizontally arranged on the pouring platform. The casting is horizontally poured, and the stability during the pouring process is good, which effectively avoids the contradiction and conflict between the stability of the mud core in the middle cavity during the mold assembly and pouring process and the riser setting and shrinkage compensation, resulting in the problem of excessive wall thickness of the casting or shrinkage defects of the casting.

[0024] The casting cavity 6 includes a mud core, the center of which is hollow, and the mud core is set on the casting platform. Mud core structure: Mud core, also known as mold core, is an important part used to form the internal structure of the casting during casting. It is usually made of raw sand and binder to form core sand, and is made in a core box. The center of the mud core is hollow to accommodate the flow and solidification of the casting liquid during the casting process.

[0025] The mud core keeps a stable position during the pouring process to prevent displacement due to the impact of the pouring liquid, which will affect the dimensional accuracy and shape of the casting. The accuracy and fastening force during the mold matching process prevent the mud core from displacement or deformation during the pouring process. The mud core is set on the pouring table and cooperates with the pouring device to ensure that the pouring liquid can fill the mold smoothly and reduce oxidation and inclusions.

[0026] The casting platform includes a transition ingate 4, and the casting device allows the casting liquid to enter the casting cavity 6 through the transition ingate 4. In this embodiment, the casting platform is used to support and fix the casting cavity 6 during the casting process to ensure the smooth progress of the casting process. The transition ingate 4 connects the casting device and the casting cavity 6, and the casting liquid enters the cavity through the transition ingate 4 to achieve the molding of the casting.

[0027] The casting platform also includes a bottom pouring reverse shower gate 5, and the casting device sequentially passes the casting liquid through the transition gate 4 and the bottom pouring reverse shower gate 5 into the casting cavity 6. The reverse shower pouring gives full play to the slag blocking and collecting ability of the casting system, and effectively controls the slag inclusion and sand inclusion defects of the casting. The casting liquid is injected into the casting platform by the bottom pouring method, that is, from the bottom of the casting cavity, and enters the casting cavity 6 through the reverse shower gate before entering the casting cavity 6. The reverse shower design can give full play to the slag blocking and collecting ability of the casting system, and effectively control the slag inclusion and sand inclusion defects of the casting. The casting liquid flows smoothly, and inclusions and gases are easy to float and escape, thereby reducing casting defects.

[0028] The riser includes an open riser 7, which is arranged at the top of the casting cavity 6. The open riser 7 is a cavity for providing molten metal for shrinkage feeding castings, and has the functions of preventing shrinkage cavities, shrinkage, exhaust and slag collection. The open riser 7 is arranged at the top of the casting cavity 6 and communicates with the atmosphere, and has good exhaust and slag effects.

[0029] The longitudinal section formed between the transition ingates 4 and the bottom pouring anti-raining ingates 5 is T-shaped. The T-shaped longitudinal section design can ensure that the casting liquid can be smoothly diverted into the bottom pouring anti-raining ingates 5 after passing through the transition ingates 4. This smooth flow helps to reduce turbulence and eddy currents in the casting liquid, thereby reducing oxidation and the generation of inclusions. The bottom pouring anti-raining ingates 5 have the ability to block and collect slag. When forming a T-shaped connection with the transition ingates 4, the ability to block and collect slag is further enhanced. The inclusions and slag in the casting liquid are more easily blocked and collected near the ingates when passing through the T-shaped ingates, thereby reducing the inclusions entering the casting. The T-shaped ingates design also has a better shrinkage compensation effect. During the casting process, the casting liquid will shrink in volume during the cooling and solidification process. The T-shaped ingates can ensure that when the casting needs to be compensated for shrinkage, the casting liquid can be timely and fully replenished into the casting, thereby reducing the generation of defects such as shrinkage cavities and shrinkage porosity.

[0030] The riser includes a blind seam blind riser 8, and the blind seam blind riser 8 is arranged at the transition ingates 4. Specifically, the blind seam blind riser 8 is arranged on both sides of the transition ingates 4, and the blind seam blind riser 8 is arranged at the transition ingates 4. When the casting liquid passes through the transition ingates 4, it will partially enter the blind seam blind riser 8, providing shrinkage compensation and slag collection for the casting. Since the blind seam blind riser 8 is not connected to the atmosphere, the oxidation and air absorption of the casting liquid can be reduced, thereby improving the quality of the casting. In addition, the design of the blind seam can also make the casting liquid shrink more smoothly during the solidification process, reducing the generation of defects such as shrinkage cavities and shrinkage porosity.

[0031] The riser includes a spherical blind riser 9, which is arranged on the outer contour of the casting cavity 6, and the upper plane of the spherical blind riser 9 is located between the upper plane of the blind seam blind riser 8 and the upper plane of the bright riser 7. The shape of the spherical blind riser 9 is close to a sphere. The spherical blind riser 9 is connected to the outer surface of the casting, but is not directly connected to the atmosphere, which helps the spherical blind riser 9 to better play the role of shrinkage compensation and reduce the oxidation and air intake of the casting liquid. The spherical blind riser 9 has a large shrinkage compensation capacity and a good slag collection effect. Since it is not connected to the atmosphere, it can reduce the air intake phenomenon of the casting during the solidification process, thereby improving the quality of the casting. In addition, the spherical design also helps the casting liquid to more smoothly compensate for the shrinkage of the casting during the solidification process and reduce the occurrence of casting defects.

[0032] By rationally arranging the open riser 7, the spherical hidden riser 9 and the gap hidden riser, the shrinkage holes and shrinkage defects in the thick and large parts of the casting are controlled, and the shrinkage holes and shrinkage defects in the thick and large parts of the casting are effectively solved.

[0033] A forming chill 10 is provided between the bottom of the casting cavity 6 and the bottom pouring anti-rain shower gate 5. The solidification sequence of the casting is achieved by the chilling effect of the chill. The forming chill 10 is a metal block with a specific shape and size, which is placed at the bottom of the casting cavity or near the gate. The metal block is utilized to absorb and take away a large amount of heat during the solidification process of the casting, thereby accelerating the solidification speed of the casting at this position, which helps the forming chill 10 to better exert its chilling effect and control the order in which the casting gradually solidifies from the bottom to the top. In addition, the forming chill 10 can also play the role of supporting the casting, preventing deformation and cracks. During the casting process, the cooling and solidification of the casting liquid will generate a shrinkage force, and the existence of the forming chill 10 can provide a certain support force to prevent the casting from being deformed or cracked during the solidification process.

[0034] In this embodiment, the pouring device includes a sprue 1 and a runner 2, and the pouring liquid enters the pouring cavity 6 through the sprue 1 and the runner 2. Specifically, during pouring, the pouring liquid flows through the sprue 1, the filter screen, the runner 2, the transition gate 4, and the anti-rain gate into the casting cavity.

[0035] A filter device 3 is provided between the sprue 1 and the runner 2. In the present embodiment, the filter device 3 adopts a filter mesh, and the filter device 3 provided between the sprue 1 and the runner 2 can effectively purify the casting liquid. Removing inclusions: The filter device 3 can capture and retain non-metallic inclusions, such as slag, refractory material flakes, etc., to prevent them from entering the interior of the device, and reducing secondary oxidation: By reducing the turbulence of the molten metal in the device, the filter device 3 helps to reduce secondary oxidation, thereby preventing the formation of oxides, and can increase the density of the casting, thereby improving its mechanical properties.

[0036] In this embodiment, the casting liquid is molten copper.

[0037] The invention obtains a casting with good intrinsic quality and an outer contour and size that meet technical requirements.

[0038] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core ideas. The above is only a preferred implementation method of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements, modifications or changes can be made, and the above technical features can be combined in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A horizontal pouring device for special-shaped cylindrical steel castings, characterized in that: It includes a pouring device, a pouring platform, a pouring cavity and a riser. The pouring device is used to allow pouring liquid to enter the pouring cavity through the pouring platform. Multiple pouring liquids enter the riser through the pouring cavity. The pouring cavity is horizontally arranged on the pouring platform along the horizontal direction.

2. The horizontal pouring device for special-shaped cylindrical steel castings according to claim 1, characterized in that: The casting cavity comprises a mud core, the central position of the mud core is hollow, and the mud core is arranged on a casting platform.

3. The horizontal pouring device for special-shaped cylindrical steel castings according to claim 1, characterized in that: The casting platform comprises a transition ingate, and the casting device allows the casting liquid to enter the casting cavity through the transition ingate.

4. The horizontal pouring device for special-shaped cylindrical steel castings according to claim 3 is characterized in that: The casting platform also includes a bottom pouring reverse rain shower gate, and the casting device allows the casting liquid to enter the casting cavity through the transition gate and the bottom pouring reverse rain shower gate in sequence.

5. The horizontal pouring device for special-shaped cylindrical steel castings according to claim 1, characterized in that: The riser comprises an open riser, and the open riser is arranged at the top of the casting cavity.

6. The horizontal pouring device for special-shaped cylindrical steel castings according to claim 5, characterized in that: The longitudinal section formed between the transition gate and the bottom pouring reverse rain gate is T-shaped.

7. The horizontal pouring device for special-shaped cylindrical steel castings according to claim 1, characterized in that: The riser comprises a blind seam blind riser, and the blind seam blind riser is arranged at the transition inner gate.

8. The horizontal pouring device for special-shaped cylindrical steel castings according to claim 1, characterized in that: The riser comprises a spherical blind riser, and the spherical blind riser is arranged on the outer contour of the casting cavity.

9. The horizontal pouring device for special-shaped cylindrical steel castings according to claim 1, characterized in that: The pouring device comprises a sprue and a runner, the pouring liquid enters the pouring cavity through the sprue and the runner, and a filtering device is arranged between the sprue and the runner.

10. The horizontal pouring device for special-shaped cylindrical steel castings according to claim 4, characterized in that: A forming chill is arranged between the bottom of the casting cavity and the bottom pouring anti-rainfall ingate.

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