Device applied to large-size circular ring casting

Abstract

The utility model discloses a device applied to large-size circular ring casting, which comprises a smelting furnace capable of melting substances in the smelting furnace into a liquid state; the input end of the injection system extends into the smelting furnace and is located below the liquid level of the liquid substance, the output end of the injection system extends to one side of the smelting furnace and is connected with the nozzle, the cooling motion platform comprises a mold with a shaping space, the shaping space is located under the nozzle, and the cooling motion platform can drive the mold to rotate and lift; the pressure adjusting system can increase the air pressure in the smelting furnace, liquid substances enter the injection system from the input end and are finally injected into the shaping space through the nozzle, in the injection process, the cooling motion platform drives the mold to rotate and ascend and descend, the shaping space is filled with the liquid substances, cooling shaping is carried out in the shaping space, and a circular ring ingot is directly formed. The production cost is reduced, the grain structure problem and composition segregation in the forming process are solved by changing the substance form, and defective products caused by the process problem in the traditional forging process are avoided.

Description

Technical Field

[0001] The present disclosure relates to the technical field of metallurgical casting, and in particular to a device used for casting large-size rings. Background Art

[0002] The application scenarios of ring forging parts are very wide, involving energy, automobiles, aerospace, ships, marine engineering, metallurgy, chemical industry and other fields. Ring forging parts play a key role in various application scenarios.

[0003] At present, conventional large-sized round ring ingots are generally forged by round bars, which has high production costs and is prone to defective products due to process problems during the forging process. Therefore, we propose a device for large-sized round ring casting. Summary of the invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a device for casting large-sized rings.

[0005] In a first aspect, the present application provides a device for large-size ring casting, comprising:

[0006] A furnace, which is used to melt the substance placed inside into a liquid state;

[0007] an injection system, the injection system having an input end and an output end, the input end passing through the furnace and extending into the liquid substance, the output end being located outside the furnace and connected to a nozzle;

[0008] A cooling motion platform system, the cooling motion platform system comprising a mold, the mold having a shaping space located directly below the nozzle, and the cooling motion platform system is used to drive the mold to rotate and lift, and cool and shape the material entering the shaping space;

[0009] A pressure regulating system is connected to the furnace and is used to regulate the internal pressure of the furnace so that the liquid substance enters the injection system from the input end and is injected into the molding space of the mold through the nozzle.

[0010] According to the technical solution provided in the embodiment of the present application, the melting furnace includes a low-pressure melting and insulation furnace body, the low-pressure melting and insulation furnace body includes a furnace shell, the top of which is open, and the inner wall of which is provided with a thermal insulation layer, a heating body is provided on the side of the thermal insulation layer away from the furnace shell, a crucible is provided on the side of the heating body away from the thermal insulation layer, and the substance is provided in the crucible.

[0011] According to the technical solution provided in the embodiment of the present application, the furnace also includes a low-pressure insulation furnace cover, whose bottom is open and corresponds to the opening at the top of the furnace shell, a second flange is arranged on the low-pressure insulation furnace cover, and a first flange is arranged on the furnace shell, the first flange and the second flange are connected by a first connecting member, and the first flange and the second flange are sealed by a first sealing member.

[0012] According to the technical solution provided in the embodiment of the present application, a first connecting port is provided on the top of the low-pressure insulation furnace cover, a third flange is provided on the first connecting port, the injection system includes an insulation sleeve, the two ends of the insulation sleeve are respectively a first end and a second end, and a accommodating space connected to the first end and the second end is opened inside the insulation sleeve, a fourth flange is provided at the first end, the fourth flange and the third flange are connected by a second connecting member, and the fourth flange and the third flange are sealed by a second sealing member.

[0013] According to the technical solution provided in the embodiment of the present application, the second end extends to one side of the furnace shell, and the injection system also includes a liquid pipe, which is arranged in the accommodating space, and the two ends of the liquid pipe are respectively the input end and the output end, the input end sequentially passes through the first end and the first connecting port to extend to the inside of the crucible and is close to the bottom of the crucible, and the output end passes through the second end and is provided with a fifth flange.

[0014] According to the technical solution provided in the embodiment of the present application, the nozzle includes a nozzle shell, which is hollow inside and has a connecting portion on the top. A sixth flange is provided on the connecting portion. The fifth flange and the sixth flange are connected by a third connecting member, and the fifth flange and the sixth flange are sealed by a third sealing member. A plurality of injection portions connected to the interior of the nozzle shell are evenly arranged along a first direction at the bottom of the nozzle shell.

[0015] According to the technical solution provided in the embodiment of the present application, the cooling motion platform system includes a lifting component, a movable end capable of reciprocating in a second direction is arranged on the top of the lifting component, a rotating platform is arranged on the top of the movable end, a cooling platform is coaxially arranged on the top of the rotating platform, and the mold is coaxially arranged on the top of the cooling platform, and the mold is a circular ring structure, which includes an inner ring and an outer ring, and the shaping space is formed between the inner ring and the outer ring.

[0016] According to the technical solution provided in the embodiment of the present application, it also includes a distance detection device for detecting the distance between the top surface of the material and the injection part in the molding space, so that the movable end drives the mold to move along the second direction, so that the distance between the top surface of the material and the injection part is always a set distance.

[0017] According to the technical solution provided in the embodiment of the present application, a second connecting port is also provided on the top of the low-pressure insulation furnace cover, a seventh flange is provided on the second connecting port, the pressure regulating system includes a pressure control cabinet, a connecting pipe is provided on the pressure control cabinet, an eighth flange is provided on the end of the connecting pipe away from the pressure control cabinet, the first flange and the eighth flange are connected by a fourth connecting piece, and the first flange and the eighth flange are sealed by a fourth sealing piece.

[0018] In summary, the technical solution specifically discloses a device for large-size circular ring casting, including a furnace, which can melt the material placed inside into a liquid state; an injection system, which has an input end and an output end, the input end extends to the inside of the furnace and is located below the liquid surface of the liquid material, the output end extends to one side of the furnace and is connected to the nozzle, and a cooling motion platform is arranged on one side of the furnace, which includes a mold, the mold has a shaping space, the shaping space is located directly below the nozzle, and the cooling motion platform can drive the mold to rotate and rise and fall; a pressure regulating system, which is connected to the furnace and can regulate the internal air pressure of the furnace;

[0019] By increasing the internal air pressure of the furnace, the liquid material enters the injection system from the input end and enters the nozzle from the output end, and is finally ejected from the nozzle into the shaping space. During the injection process, the cooling motion platform drives the mold to rotate and lift, so that the liquid material fills the shaping space and can be cooled and shaped in the shaping space. Thus, the required round ring ingot is directly formed, reducing production costs. The molten material is cooled into the required solid round ring ingot, changing the material form, solving the grain structure problem and component segregation in the forming process, and avoiding the process problems in the traditional forging process that lead to defective products. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0021] Figure 1 The figure is a schematic diagram of the structure of a device used for casting large-size rings.

[0022] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0023] Figure 3 for Figure 1 Enlarged view of point B in the middle.

[0024] Figure 4 for Figure 1 Enlarged view of point C in the middle.

[0025] Figure 5 for Figure 1Enlarged view of point D in the middle.

[0026] Numbers in the figure: 1. Low-pressure melting furnace body; 11. Furnace shell; 12. Insulation layer; 13. Crucible; 14. Heating body; 15. Platform; 16. First flange; 2. Low-pressure insulation furnace cover; 21. Second flange; 22. Third flange; 23. Seventh flange; 3. Pressure regulating system; 31. Pressure control cabinet; 32. Connecting pipe; 33. Eighth flange; 4. Injection system; 41. Insulation sleeve; 42. Fourth flange; 43. Liquid pipe; 44 , fifth flange; 45, nozzle; 46, nozzle housing; 47, sixth flange; 5, cooling motion platform system; 51, inner ring; 52, outer ring; 53, cooling platform; 54, rotating platform; 55, lifting member; 6, material; 71, first connecting member; 72, first sealing member; 73, second connecting member; 74, second sealing member; 75, third connecting member; 76, third sealing member; 77, fourth connecting member; 78, fourth sealing member. DETAILED DESCRIPTION

[0027] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0028] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0029] Embodiment 1

[0030] Please refer to Figure 1 A device for casting large-size rings includes a furnace with molten liquid material 6 arranged in the furnace, a pressure regulating system 3 and an injection system 4, one end of the injection system 4 extends below the liquid surface of the liquid material 6, and the other end is provided with a nozzle 45. The pressure regulating system 3 can regulate the internal air pressure of the furnace to push the liquid material 6 into the injection system 4 and spray it out from the nozzle 45. A cooling motion platform system 5 is arranged below the nozzle 45 for receiving the liquid material 6 sprayed from the nozzle 45 and cooling and shaping the liquid material 6.

[0031] The furnace includes a low-pressure melting furnace body 1, which includes a furnace shell 11. The furnace shell 11 is made of carbon steel welding. Considering that the furnace shell 11 needs to have pressure-maintaining capacity, all welding points need to be fully welded and leak detection is required. The top of the furnace shell 11 is open, and the circumferential inner wall thereof is provided with an insulation layer 12. The insulation layer 12 is pressed and formed with high-temperature resistant insulation cotton. It is necessary to ensure that the temperature of the furnace shell 11 is not higher than 60°C during use;

[0032] A crucible 13 is arranged on one side of the heat-insulating layer 12 away from the furnace shell 11. The crucible 13 is made of heat-resistant cast steel to ensure its performance under high temperature conditions. A heating body 14 is arranged between the crucible 13 and the heat-insulating layer 12. The heating body 14 is a spiral winding structure and is connected to an external control system to uniformly heat the entire crucible 13. The heating body 14 is made of a resistance band and mullite.

[0033] The material of the substance 6 is aluminum. An aluminum ingot is placed in the crucible 13. The heating body 14 is powered by an external power source to generate heat, so that the aluminum ingot can be melted into aluminum liquid.

[0034] Furthermore, a platform 15 is provided on the circumferential inner wall of the top of the furnace shell 11 , and an overlapping portion is provided on the circumferential outer wall of the top of the crucible 13 . When the crucible 13 is placed inside the furnace shell 11 , the overlapping portion can overlap the platform 15 .

[0035] The furnace further includes a low-pressure heat-insulating furnace cover 2, and the bottom is open, and the opening corresponds to the top opening of the furnace shell 11. The low-pressure heat-insulating furnace cover 2 is placed on the top of the furnace shell 11, and the two openings correspond to each other, thereby forming a furnace;

[0036] Furthermore, a first flange 16 is provided on the top circumferential outer wall of the furnace shell 11, and a second flange 21 is provided on the bottom circumferential outer wall of the low-pressure insulation furnace cover 2. The first flange 16 and the second flange 21 are connected by a first connecting member 71, and a first sealing member 72 is also provided between the first flange 16 and the second flange 21 for sealing the furnace; wherein the type of the first connecting member 71 is, for example, a fastening bolt; and the type of the first sealing member 72 is, for example, an O-ring.

[0037] A first connection port is provided at the top of the low-pressure insulation furnace cover 2, which is connected to the inside of the low-pressure insulation furnace cover 2, and a third flange 22 is provided on the circumferential outer wall of the top of the first connection port;

[0038] The injection system 4 includes an insulation sleeve 41, whose two ends are respectively a first end and a second end, and a receiving space connected to the first end and the second end is opened inside the insulation sleeve 41, and a fourth flange 42 is arranged on the circumferential outer wall of the first end, and the third flange 22 and the fourth flange 42 are connected by a second connecting member 73, and a second sealing member 74 is arranged between the third flange 22 and the fourth flange 42 to ensure the sealing of the connection; wherein the type of the second connecting member 73 is, for example, a fastening bolt; the type of the second sealing member 74 is, for example, an O-ring; the second end is located on one side of the low-pressure insulation furnace cover 2;

[0039] The injection system 4 also includes a liquid pipe 43, which is arranged in the accommodation space, and the two ends of the liquid pipe 43 are respectively an input end and an output end, wherein the input end penetrates the first end and the first connection port to extend to the inside of the low-pressure insulation furnace cover 2, and extends below the liquid surface of the liquid substance 6, and is close to the bottom of the crucible 13, the purpose of which is to completely absorb the liquid substance 6 in the crucible 13 as much as possible to avoid residue, and the output end penetrates the second end and extends to the outside of the insulation sleeve 41, and the output end is connected to the nozzle 45;

[0040] Specifically, a fifth flange 44 is provided on the circumferential outer wall of the output end, the nozzle 45 includes a nozzle housing 46, a connecting portion is provided on the top of the nozzle housing, a sixth flange 47 is provided on the connecting portion, the fifth flange 44 and the sixth flange 47 are connected by a third connecting member 75, and the fifth flange 44 and the sixth flange 47 are sealed by a third sealing member 76; wherein the type of the third connecting member 75 is, for example, a fastening bolt; the type of the third sealing member 76 is, for example, an O-ring;

[0041] Furthermore, a plurality of injection portions connected to the inside of the nozzle housing 46 are evenly arranged at the bottom of the nozzle housing 46 along a first direction; Figure 1 mid-horizontal direction;

[0042] Thus, the liquid substance 6 can enter the liquid pipe 43 from the input end and enter the nozzle housing 46 from the output end, and then the liquid substance 6 is sprayed out by the spray part; the purpose of the insulation sleeve 41 is to fix the liquid pipe 43 and to keep the liquid substance 6 warm when it is transmitted through the liquid pipe 43 to prevent it from solidifying.

[0043] The pressure regulating system 3 includes a pressure control cabinet 31, on which a connecting pipe 32 is provided, and an eighth flange 33 is provided on the circumferential outer wall of one end of the connecting pipe 32 away from the pressure control cabinet 31, and a second connecting port is also provided on the top of the low-pressure insulation furnace cover 2, and a seventh flange 23 is provided on the second connecting port, and the seventh flange 23 and the eighth flange 33 are connected by a fourth connecting member 77, and the seventh flange 23 and the eighth flange 33 are sealed by a fourth sealing member 78, so that the pressure regulating system 3 can adjust the internal gas pressure of the furnace; wherein the type of the fourth connecting member 77 is, for example, a fastening bolt; the type of the fourth sealing member 78 is, for example, an O-ring;

[0044] The gas pressure is adjusted by the pressure control cabinet 31 to increase the gas pressure in the furnace, so that the liquid substance 6 can enter the liquid pipe 43 from the input end and enter the nozzle 45 from the output end to be ejected by the ejection part.

[0045] The cooling motion platform system 5 includes a mold, which is a circular ring structure and has a first axis. The mold includes an inner ring 51 and an outer ring 52 that are coaxially arranged. A shaping space is formed between the inner ring 51 and the outer ring 52. The shaping space is located directly below the injection portion, and the first direction is perpendicular to the first axis direction, and the first direction is parallel to the radial direction of the mold.

[0046] The bottom of the mold is coaxially fixedly connected with a cooling platform 53, and the bottom of the cooling platform 53 is coaxially fixedly connected with a rotating platform 54, which is used to drive the cooling platform 53 and the mold to rotate around the first axis. A lifting member 55 is provided at the bottom of the rotating platform 54, and a moving end capable of reciprocating along the second direction is provided at the top of the lifting member 55. The bottom of the rotating platform 54 and the moving end are fixedly connected. By starting the lifting member 55, the moving end reciprocates along the second direction, which can drive the rotating platform 54, the cooling platform 53 and the mold to move along the second direction. The second direction is Figure 1 a middle vertical direction, the second direction being perpendicular to the first direction;

[0047] Furthermore, it also includes a distance detection device, which is used to detect the distance between the top surface of the material 6 in the molding space and the injection part, and generate a numerical signal containing a distance value to transmit to the external control system. The external control system receives the numerical signal and compares the distance value with the set distance. If the distance value is less than the set distance, the external control system controls the lifting member 55 to drive the moving end to move downward in the second direction, so that the mold is away from the injection part; if the distance value is greater than the set distance, the external control system controls the lifting member 55 to drive the moving end to move upward in the second direction, so that the mold is close to the injection part; if the distance value is equal to the set distance, the external control system does not take any action.

[0048] It should be noted that a coolant is arranged inside the cooling platform 53 to complete the cooling of the liquid substance 6. By arranging a liquid inlet and outlet in the middle of the bottom of the cooling platform 53, a circulation path of the coolant is realized through the inlet and outlet pipes. The inlet and outlet pipes extend into the rotating platform 54, pass through the side wall of the rotating platform 54, and are connected to the external liquid supply equipment. The interior of the cooling platform 53 is sealed by a dynamic seal to prevent leakage of the coolant.

[0049] Working principle: First, release the connection between the first flange 16 and the second flange 21, separate the low-pressure insulation furnace cover 2 and the furnace shell 11, put the aluminum ingot into the crucible 13, and energize the heating body 14 through the external control system to generate heat, so as to melt the aluminum ingot, and perform temperature detection on the aluminum liquid. After the aluminum ingot is completely melted into aluminum liquid and reaches the predetermined process temperature, degas and slag the aluminum liquid to make it meet the process requirements, then install the low-pressure insulation furnace cover 2, the pressure regulating system 3 and the injection system 4, and check the connection sealing, and then check the cold The working condition of the cooling motion platform system 5 is determined to ensure that the cooling motion platform system 5 can be used normally, and the injection part is located inside the shaping space, and the distance from the bottom of the shaping space to the injection part is the set distance. The pressure inside the furnace is controlled by the pressure control cabinet 31, so that the aluminum liquid enters the liquid pipe 43 and is injected from the injection part into the shaping space. At this time, the cooling motion platform system 5 is started, and the rotating platform 54 drives the cooling platform 53 and the mold to rotate around the first axis. The aluminum liquid is located in the shaping space and is cooled and shaped by the cooling platform 53 to form a circular ring ingot.

[0050] The injection unit continuously sprays molten aluminum. During the injection process, the distance detection device continuously detects the distance from the top surface of the molten aluminum to the injection unit, and controls the lifting member 55 through the external control system to drive the movable end to move along the second direction until the thickness of the molten aluminum reaches the requirement or the remaining amount of the molten aluminum is insufficient, and then stops production. The pressure control cabinet 31 is controlled to stop regulating the pressure, and the molten aluminum no longer enters the liquid pipe, and the injection unit no longer sprays molten aluminum. Then the pressure in the furnace is discharged, and the device is cleaned to prepare for the next production.

[0051] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.

Claims

1. A device for casting large-size rings, characterized in that: include: A furnace for melting a substance (6) placed inside the furnace into a liquid state; an injection system (4), the injection system (4) having an input end and an output end, the input end penetrating the furnace and extending into the liquid substance (6), the output end being located outside the furnace and connected to a nozzle (45); A cooling motion platform system (5), the cooling motion platform system comprising a mold, the mold having a shaping space located directly below the nozzle (45), and the cooling motion platform system is used to drive the mold to rotate and rise and fall, and cool and shape the material (6) entering the shaping space; A pressure regulating system (3) is connected to the melting furnace and is used to regulate the internal pressure of the melting furnace so that the liquid substance enters the injection system from the input end and is injected into the molding space of the mold through the nozzle (45).

2. The device for large-size ring casting according to claim 1, characterized in that: The melting furnace comprises a low-pressure melting furnace body (1), the low-pressure melting furnace body (1) comprises a furnace shell (11), the top of which is open, and the inner wall of which is provided with a heat-insulating layer (12), a heating body (14) is provided on the side of the heat-insulating layer (12) away from the furnace shell (11), a crucible (13) is provided on the side of the heating body (14) away from the heat-insulating layer (12), and the substance (6) is provided in the crucible (13).

3. The device for large-size ring casting according to claim 2, characterized in that: The melting furnace further comprises a low-pressure heat-insulating furnace cover (2), the bottom of which is open and corresponds to the top opening of the furnace shell (11); a second flange (21) is arranged on the low-pressure heat-insulating furnace cover (2); a first flange (16) is arranged on the furnace shell (11); the first flange (16) and the second flange (21) are connected via a first connecting member (71); and the first flange (16) and the second flange (21) are sealed via a first sealing member (72).

4. The device for casting large-size rings according to claim 3, characterized in that: The top of the low-pressure insulation furnace cover (2) is provided with a first connection port, and the first connection port is provided with a third flange (22). The injection system (4) includes an insulation sleeve (41), and the two ends of the insulation sleeve (41) are respectively a first end and a second end, and a receiving space connected to the first end and the second end is opened inside the insulation sleeve (41). The first end is provided with a fourth flange (42), and the fourth flange (42) and the third flange (22) are connected by a second connecting member (73), and the fourth flange (42) and the third flange (22) are sealed by a second sealing member (74).

5. The device for casting large-size rings according to claim 4, characterized in that: The second end extends to one side of the furnace shell (11), and the injection system (4) further comprises a liquid pipe (43), wherein the liquid pipe (43) is arranged in the accommodating space, and the two ends of the liquid pipe (43) are respectively the input end and the output end, the input end sequentially passes through the first end and the first connecting port and extends to the inside of the crucible (13) and is close to the bottom of the crucible (13), and the output end passes through the second end and is provided with a fifth flange (44).

6. The device for casting large-size rings according to claim 5, characterized in that: The nozzle (45) comprises a nozzle housing (46) which is hollow inside and has a connecting portion on the top. A sixth flange (47) is arranged on the connecting portion. The fifth flange (44) and the sixth flange (47) are connected via a third connecting member (75), and the fifth flange (44) and the sixth flange (47) are sealed via a third sealing member (76). A plurality of injection portions which are connected to the inside of the nozzle housing (46) are evenly arranged at the bottom of the nozzle housing (46) along a first direction.

7. The device for casting large-size rings according to claim 6, characterized in that: The cooling motion platform system (5) comprises a lifting member (55), the top of which is provided with a moving end capable of reciprocating along a second direction, the top of the moving end is provided with a rotating platform (54), the top of the rotating platform (54) is coaxially provided with a cooling platform (53), and the top of the cooling platform (53) is coaxially provided with the mold, the mold is a circular ring structure, which comprises an inner ring (51) and an outer ring (52), and the shaping space is formed between the inner ring (51) and the outer ring (52).

8. The device for casting large-size rings according to claim 7, characterized in that: It also includes a distance detection device for detecting the distance between the top surface of the substance (6) and the ejection part in the molding space, so that the movable end drives the mold to move along the second direction, thereby ensuring that the distance between the top surface of the substance (6) and the ejection part is always a set distance.

9. The device for casting large-size rings according to claim 4, characterized in that: The top of the low-pressure insulation furnace cover (2) is also provided with a second connection port, and the second connection port is provided with a seventh flange (23). The pressure regulating system (3) comprises a pressure control cabinet (31), and the pressure control cabinet (31) is provided with a connecting pipe (32). An eighth flange (33) is provided at one end of the connecting pipe (32) away from the pressure control cabinet (31). The first flange (16) and the eighth flange (33) are connected by a fourth connecting member (77), and the first flange (16) and the eighth flange (33) are sealed by a fourth sealing member (78).

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