Hot isostatic pressing forming equipment for manufacturing spacecraft control load shell

Abstract

The hot isostatic pressing forming equipment for manufacturing the spacecraft control load shell comprises a supporting frame and a high-pressure barrel vertically installed above the supporting frame, an upper sealing cover is connected to the upper portion of the high-pressure barrel, and a carrying assembly used for bearing a sheath and resealing a material injection opening of the sheath is arranged below the upper sealing cover; an upper sealing cover is placed in a high-pressure barrel, at the moment, the bottom of a carrying circular plate makes contact with the inner wall of the barrel firstly, then a long baffle makes contact with the inner wall of the barrel, a toothed plate above an open groove and a gear are in transmission to enable a second bidirectional threaded rod to rotate, two pairs of fixing blocks draw close to each other in a moving groove, and the two side edges of a carrying plate are limited and fixed; the descending distance of the connecting frame enables the sealing circular plate to press and seal the filling port of the sheath again, starting from the two points of limiting the material carrying plate and sealing and pressing the sheath again, the sheath is prevented from moving during hot isostatic pressing, inert gas is prevented from entering the sheath, and the manufacturing quality of the control load shell is jointly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of hot isostatic pressing forming, and more specifically, the present invention relates to a hot isostatic pressing forming device for manufacturing a spacecraft control payload housing. Background Art

[0002] Hot isostatic pressing can directly form powder. The powder is loaded into a cladding, and the cladding can be made of metal or ceramic. Then, nitrogen or argon is used as the pressure medium to directly heat and pressurize the powder for sintering and forming. Through powder metallurgy combined with HIP technology, the powder can be directly loaded into the cladding to form components with complex geometric shapes, or post-treatment can be carried out on precision castings, which is particularly suitable for spacecraft housings, such as components like spacecraft control payload housings that have complex structures and require high precision;

[0003] When the powder or powder compact is loaded into the welded cladding and undergoes forming and sintering under high temperature and high pressure, it mostly needs to be removed by mechanical or acid leaching methods to obtain the product. For metal products such as formed targets, when the cladding is made of metal and pickling is used, if not properly controlled, the product parts will be corroded while removing the cladding and bottom plate, so the production cost of hot isostatic pressing forming is very high. For example, in the patent document with the publication number CN113732284B, a method and device for hot isostatic pressing forming of a target material make the installation and disassembly of the cladding convenient through the mechanical seal connection of the loading plate, cladding, and compression connecting parts, avoid the use of pickling, avoid damage to the product, and reduce the enterprise cost;

[0004] However, in the above patent document, the loading plate is directly placed inside the high-pressure cylinder without limiting the loading plate. When the loading plate and the cladding both bear high pressure and high temperature, multiple groups of loading plates and claddings may be displaced due to uneven pressure or gas flow, resulting in uneven powder distribution or cladding deformation, affecting the density and shape accuracy of the final product. At the same time, the injection port of the cladding entering the high-pressure cylinder is not pressurized and sealed again to ensure that inert gas does not enter the cladding, improving the manufacturing quality of the control payload housing. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a hot isostatic pressing forming device for manufacturing a spacecraft control payload housing.

[0006] To achieve the above object, the present invention provides the following technical solution: A hot isostatic pressing forming device for manufacturing a spacecraft control payload housing, including a support frame and a high-pressure cylinder vertically installed above it. An upper sealing cover is connected above the high-pressure cylinder. Multiple threaded columns are arranged above the upper sealing cover. A loading component for carrying the cladding and re-sealing the injection port of the cladding is arranged below the upper sealing cover. A limiting component for limiting the cladding is arranged above the loading component;

[0007] The load-carrying component includes a load-carrying circular plate. Between multiple groups of the load-carrying circular plates, they are jointly connected by two connecting frames. Above the load-carrying circular plate, two sets of placement grooves are symmetrically opened. Inside the placement grooves, there are load-carrying plates, and above the load-carrying plates, there are sleeve covers connected.

[0008] Further, a bottom limit groove is opened below the load-carrying circular plate. Inside the bottom limit groove, there is a long baffle, and both ends of the long baffle are fixedly connected to the two connecting frames respectively.

[0009] Further, above the sleeve cover, there is a sealing member for re-sealing its filling port. The sealing member includes a connecting cylinder. Inside the connecting cylinder, there is a first threaded rod threadedly connected. Below the first threaded rod, there is a connecting column fixedly arranged, and at the bottom of the connecting column, there is a sealing circular plate.

[0010] Further, the topmost connecting cylinder is fixedly connected to the upper U-shaped frame, and the other connecting cylinders are fixedly connected to the long baffle.

[0011] Further, the limiting component includes a slot opened above one of the connecting frames. The slot is located on the outer wall of the load-carrying circular plate inside, and a central groove is opened inside the load-carrying circular plate.

[0012] Further, on the outer walls of both sides of the load-carrying circular plate where the placement grooves are located, there are moving grooves. The moving grooves are communicated with the central groove, and a connecting shaft is rotatably arranged in the middle of the central groove.

[0013] Further, on both sides of the connecting shaft, there are second bidirectional threaded rods fixedly connected. One end of one second bidirectional threaded rod is rotatably connected to the central groove, and the end of the other second bidirectional threaded rod extends into the slot and is fixedly connected with a gear.

[0014] Further, a toothed plate is fixedly arranged inside the slot, and the toothed plate is in transmission cooperation with the gear.

[0015] Among them, the working steps of this hot isostatic pressing forming equipment are as follows:

[0016] S1: Place the sleeve cover: Put the upper sealing cover into the inside of the high-pressure cylinder body. First, the bottom of the load-carrying circular plate contacts the inner wall of the high-pressure cylinder body, and then the long baffle contacts the inner wall of the high-pressure cylinder body.

[0017] S2: Limit the sleeve cover: During the S process, the toothed plate above the slot cooperates with the gear, the second bidirectional threaded rod rotates, and the two pairs of fixed blocks approach each other to limit and fix the two side edges of the load-carrying plate.

[0018] S3: Apply pressure to reseal the sleeve: During step S, the sealing circular plate moves downward synchronously with the two connecting frames to apply pressure again to seal the injection port above the sleeve.

[0019] S4: Isostatic hot pressing, take out the part and disassemble.

[0020] The technical effects and advantages of the present invention:

[0021] 1. In the present invention, the loading plate carrying the sleeve is placed above the placement groove. Then, when the upper sealing cover is placed inside the high-pressure cylinder by an external transfer device, the bottom of the loading circular plate first contacts the inner wall of the high-pressure cylinder. As the upper sealing cover continues to descend, the long baffle also descends and contacts the inner wall of the high-pressure cylinder. At the same time, the toothed plate above the slot is in transmission cooperation with the gear, driving the rotation of the double-threaded rod two. When the two double-threaded rods two rotate, the two pairs of fixed blocks move closer to each other inside the moving groove to limit and fix the two side edges of the loading plate.

[0022] 2. In the present invention, the sealing circular plate moves downward synchronously with the two connecting frames, and the descending distance of the connecting frame just makes the sealing circular plate descend to apply pressure again to seal the injection port above the sleeve. Among them, by controlling the rotation of the connecting column, the threaded rod one is driven to rotate inside the connecting cylinder, and the horizontal height of the sealing circular plate in the vertical direction is adjusted, so as to achieve the purpose of applying pressure again to fix the injection port of the sleeve, ensuring that inert gas does not enter the sleeve and improving the manufacturing quality of the control load housing.

[0023] 3. In the present invention, by placing the upper sealing cover inside the high-pressure cylinder, at this time, the bottom of the loading circular plate first contacts the inner wall of the cylinder, and the long baffle contacts the inner wall later. Therefore, the toothed plate above the slot is in transmission with the gear to drive the rotation of the double-threaded rod two, and the two pairs of fixed blocks move closer to each other inside the moving groove to limit and fix the two side edges of the loading plate. In addition, the descending distance of the connecting frame makes the sealing circular plate apply pressure again to seal the injection port of the sleeve. Starting from the two points of limiting the loading plate and applying pressure again to seal the sleeve, it prevents the sleeve from moving during isostatic hot pressing and avoids inert gas from entering the sleeve, jointly improving the manufacturing quality of the control load housing. Description of the drawings

[0024] Figure 1 It is a three-dimensional external view of the overall structure in the present invention.

[0025] Figure 2 It is a three-dimensional external view of the loading component in the present invention.

[0026] Figure 3 It is a three-dimensional connection view of the long baffle and the bottom limit groove in the present invention.

[0027] Figure 4 It is a cross-sectional view of the internal structure of the loading circular plate in the present invention.

[0028] Figure 5 This is a three-dimensional view of the structure on the load-carrying circular plate in the present invention.

[0029] Figure 6 This is a front view of the internal structure of the seal in the present invention.

[0030] Figure 7 This is a front view of the overall structure in the present invention.

[0031] The reference numerals in the drawings are: 1, support frame; 2, high-pressure cylinder; 3, upper seal cover; 4, load-carrying assembly; 41, upper U-shaped frame; 42, load-carrying circular plate; 43, connecting frame; 44, connecting cylinder; 45, first threaded rod; 46, connecting column; 47, sealing circular plate; 48, placement groove; 5, loading plate; 51, second bidirectional threaded rod; 52, fixed block; 53, connecting shaft; 54, slotted opening; 55, toothed plate; 56, gear; 57, central groove; 58, moving groove; 59, long baffle; 510, bottom limit groove; 6, sheath. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] Embodiment 1: Please refer to Figures 1-7 As shown, for the problem that in the prior art, the injection port of the sheath entering the high-pressure cylinder is not pressurized and sealed again to ensure that inert gas does not enter the sheath and improve the manufacturing quality of the control load housing, the following solutions can be adopted;

[0034] In this embodiment, a hot isostatic pressing forming device for manufacturing a spacecraft control load housing includes a support frame 1 and a high-pressure cylinder 2 vertically installed above it. An upper seal cover 3 is connected above the high-pressure cylinder 2. A plurality of threaded columns are provided above the upper seal cover 3. Below the upper seal cover 3, there is a load-carrying assembly 4 for carrying the sheath 6 and re-sealing the injection port of the sheath 6. Above the load-carrying assembly 4, there is a limiting assembly for limiting the sheath 6;

[0035] Here, it needs to be explained that:

[0036] A lower seal cover is also provided below the high-pressure cylinder 2. The upper seal cover 3, the high-pressure cylinder 2, and the lower seal cover enclose a high-pressure chamber. Inside the high-pressure chamber, there is a heating system for generating heat and a cooling system for cooling;

[0037] Moreover, the heating system includes a heat insulation member disposed in the high-pressure chamber and a heating member disposed between the jacket 6 and the heat insulation member for generating heat. The cooling system includes a cooling channel disposed in the high-pressure cylinder 2, a water pump, and a water tank. The water outlet end of the water pump is communicated with the water inlet end of the cooling channel, and both the water inlet end of the water pump and the water outlet end of the cooling channel are connected to the water tank;

[0038] The load-carrying assembly 4 includes a load-carrying circular plate 42. Multiple groups of load-carrying circular plates 42 are commonly connected by two connecting frames 43. Two sets of placement grooves 48 are symmetrically formed above the load-carrying circular plate 42. A loading plate 5 is disposed inside the placement groove 48, and a jacket 6 is connected above the loading plate 5;

[0039] It should be supplemented here that: the jacket 6 is connected to the loading plate 5. The jacket 6 and the loading plate 5 are used to load the powder for manufacturing the outer shell of the spacecraft control payload, and the loading plate 5 and the jacket 6 are connected by a pressing connection member;

[0040] A bottom limit groove 510 is formed below the load-carrying circular plate 42. A long baffle 59 is disposed inside the bottom limit groove 510, and both ends of the long baffle 59 are fixedly connected to the two connecting frames 43 respectively;

[0041] A seal member for resealing the charging port thereof is disposed above the jacket 6. The seal member includes a connecting cylinder 44. A first threaded rod 45 is threadedly connected inside the connecting cylinder 44. A connecting column 46 is fixedly disposed below the first threaded rod 45. A sealing circular plate 47 is disposed at the bottom of the connecting column 46. The uppermost connecting cylinder 44 is fixedly connected to the upper U-shaped frame 41, and the other connecting cylinders 44 are fixedly connected to the long baffle 59;

[0042] By controlling the rotation of the connecting column 46, driving the rotation of the first threaded rod 45 inside the connecting cylinder 44, and adjusting the horizontal height of the sealing circular plate 47 in the vertical direction, it is further adapted to seal the charging port above the jacket 6;

[0043] When the upper sealing cover 3 is placed inside the high-pressure cylinder 2, the bottom of the load-carrying circular plate 42 first contacts the high-pressure cylinder 2. As the upper sealing cover 3 continues to descend, the long baffle 59 also descends and contacts the inner wall of the high-pressure cylinder 2. The connecting frame 43 descends, enabling the toothed plate 55 above the slot 54 to be in driving cooperation with the gear 56, driving the rotation of the double-threaded rod two 51. When the two double-threaded rods two 51 rotate, the two pairs of fixing blocks 52 move closer to each other inside the moving groove 58 to limit and fix both sides of the loading plate 5;

[0044] Example Two: Please refer to Figures 1-4As shown in the figure, when the loading plate 5 is directly placed inside the high-pressure cylinder body 2 without limiting the loading plate 5, when both the loading plate 5 and the jacket 6 are under high pressure and high temperature, the problem that multiple groups of loading plates 5 and jackets 6 may displace due to uneven pressure or gas flow can be solved by the following solutions;

[0045] The limiting component includes a slot 54 opened above one of the connecting frames 43. The slot 54 is located on the outer wall of the load-carrying circular plate 42 inside. A central slot 57 is opened inside the load-carrying circular plate 42. Moving slots 58 are opened on the outer walls of the load-carrying circular plate 42 on both sides of the placement slot 48. The moving slots 58 communicate with the central slot 57. A connecting shaft 53 is rotatably arranged in the middle of the central slot 57. Two-way threaded rods two 51 are fixedly connected to both sides of the connecting shaft 53. The end of one two-way threaded rod two 51 is rotatably connected to the central slot 57, and the end of the other two-way threaded rod two 51 extends into the slot 54 and is fixedly connected with a gear 56. A toothed plate 55 is fixedly arranged inside the slot 54. The toothed plate 55 is in transmission cooperation with the gear 56;

[0046] The loading plate 5 carries the jacket 6 and is placed above the placement slot 48. Then, when the upper sealing cover 3 is placed inside the high-pressure cylinder body 2 through an external transfer device, the bottom of the load-carrying circular plate 42 first contacts the inner wall of the high-pressure cylinder body 2. As the upper sealing cover 3 continues to descend, the long baffle 59 also descends and contacts the inner wall of the high-pressure cylinder body 2. At the same time, the sealing circular plate 47 moves downward synchronously with the two connecting frames 43, and the distance that the connecting frame 43 descends just makes the sealing circular plate 47 descend to press and seal the injection port above the jacket 6 again, ensuring that inert gas does not enter the jacket 6 and improving the manufacturing quality of the control load housing;

[0047] Fixed blocks 52 are threadedly connected to both outer walls of the two-way threaded rod two 51. The fixed blocks 52 are slidably matched with the moving slots 58.

[0048] In this invention, combining Embodiment 1 and Embodiment 2, it can be known that when the upper sealing cover 3 is placed inside the high-pressure cylinder body 2, at this time, the bottom of the load-carrying circular plate 42 first contacts the inner wall of the cylinder body, and the long baffle 59 then contacts the inner wall. Therefore, the toothed plate 55 above the slot 54 is in transmission with the gear 56 to make the two-way threaded rod two 51 rotate. The two pairs of fixed blocks 52 approach each other in the moving slots 58 to limit and fix the two sides of the loading plate 5. In addition, the distance that the connecting frame 43 descends makes the sealing circular plate 47 press and seal the injection port of the jacket 6 again. Starting from the two points of limiting the loading plate 5 and re-sealing and pressing the jacket 6, it prevents the jacket 6 from moving during hot isostatic pressing and avoids inert gas from entering the jacket 6, jointly improving the manufacturing quality of the control load housing;

[0049] Working principle:

[0050] Step 1: Carry the loading plate 5 with the wrapper 6 above the placement groove 48. Then, when the upper sealing cover 3 is placed inside the high-pressure cylinder 2 through an external transfer device, the bottom of the load-carrying circular plate 42 first contacts the inner wall of the high-pressure cylinder 2. As the upper sealing cover 3 continues to descend, the sealing of the high-pressure cylinder 2 is completed. At this time, the long baffle 59 also descends and contacts the inner wall of the high-pressure cylinder 2. At the same time, the toothed plate 55 above the slot 54 is in transmission cooperation with the gear 56, driving the double-threaded rod two 51 to rotate. When the two double-threaded rods two 51 rotate, the two pairs of fixed blocks 52 move closer to each other inside the moving groove 58, limiting and fixing the two side edges of the loading plate 5;

[0051] Step 2: During the process of Step 1, the sealing circular plate 47 moves downward synchronously with the two connecting frames 43. The distance that the connecting frame 43 descends just makes the sealing circular plate 47 descend to press and seal the injection port above the wrapper 6 again, ensuring that inert gas does not enter the wrapper 6 and improving the manufacturing quality of the control load housing;

[0052] Step 3: During the process of Step 2, control the connecting column 46 to rotate, drive the threaded rod one 45 to rotate inside the connecting cylinder 44, and adjust the horizontal height of the sealing circular plate 47 in the vertical direction, so as to achieve the purpose of pressing and fixing the injection port of the wrapper 6 again;

[0053] Step 4:

[0054] Hot isostatic pressing: While heating, the pressure is increased at the same time. The temperature and pressure of the gas in the high-pressure chamber reach the peak values simultaneously. At this time, the temperature is 1230 °C ± 100 °C; the pressure is 130 - 150 MPa; then hold the pressure, and the pressure holding time is 65 - 75 min; finally, cool down and release the pressure;

[0055] Taking the part: Open the upper sealing cover 3, take out the loading plate 5 and the wrapper 6, and then disassemble them to complete the manufacturing of the spacecraft control load housing.

[0056] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific implementation manners. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the relevant art can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A hot isostatic pressing forming device for manufacturing the housing of a spacecraft control payload, comprising a support frame (1) and a high-pressure cylinder (2) vertically installed above it, characterized in that, Above the high-pressure cylinder body (2), an upper sealing cover (3) is connected. Above the upper sealing cover (3), multiple groups of threaded columns are provided. Below the upper sealing cover (3), a loading component (4) is provided for carrying the jacket (6) and re-sealing the feeding port of the jacket (6). Above the loading component (4), a limiting component for limiting the jacket (6) is provided. The loading component (4) includes a loading circular plate (42). Between multiple groups of the loading circular plates (42), they are jointly connected by two connecting frames (43). Above the loading circular plate (42), two groups of placing grooves (48) are symmetrically opened. Inside the placing grooves (48), a loading plate (5) is arranged. Above the loading plate (5), a jacket (6) is connected.

2. The hot isostatic pressing forming equipment for manufacturing the control payload housing of a spacecraft according to claim 1, characterized in that: Below the loading circular plate (42), a bottom limiting groove (510) is opened. Inside the bottom limiting groove (510), a long baffle (59) is arranged. The two ends of the long baffle (59) are respectively fixedly connected to the two connecting frames (43).

3. The hot isostatic pressing forming equipment for manufacturing the control payload housing of a spacecraft according to claim 2, wherein: Above the jacket (6), a sealing member for re-sealing its feeding port is provided. The sealing member includes a connecting cylinder (44). Inside the connecting cylinder (44), a first threaded rod (45) is threadedly connected. Below the first threaded rod (45), a connecting column (46) is fixedly arranged. At the bottom of the connecting column (46), a sealing circular plate (47) is arranged.

4. The hot isostatic pressing forming equipment for manufacturing the spacecraft control payload housing according to claim 3, characterized in that: The uppermost connecting cylinder (44) is fixedly connected to the upper U-shaped frame (41), and the other connecting cylinders (44) are fixedly connected to the long baffle (59).

5. The hot isostatic pressing forming equipment for manufacturing the spacecraft control payload housing according to claim 1, wherein: The limiting component includes a slot (54) opened above one of the connecting frames (43). The slot (54) is located on the outer wall of the loading circular plate (42) inside. Inside the loading circular plate (42), a central slot (57) is opened.

6. The hot isostatic pressing forming equipment for manufacturing the spacecraft control payload housing according to claim 5, characterized in that: On the outer walls of the loading circular plate (42) on both sides of the placing groove (48), moving grooves (58) are opened. The moving grooves (58) are communicated with the central slot (57). In the middle of the central slot (57), a connecting shaft (53) is rotatably arranged.

7. The hot isostatic pressing forming equipment for manufacturing the spacecraft control payload housing according to claim 6, characterized in that: On both sides of the connecting shaft (53), second double-threaded rods (51) are fixedly connected. The end of one second double-threaded rod (51) is rotatably connected to the central slot (57), and the end of the other second double-threaded rod (51) extends into the slot (54) and is fixedly connected to a gear (56).

8. The hot isostatic pressing forming equipment for manufacturing the spacecraft control payload housing according to claim 7, wherein: Inside the slot (54), a toothed plate (55) is fixedly arranged. The toothed plate (55) is in transmission cooperation with the gear (56).

9. A hot isostatic pressing forming device for manufacturing a spacecraft control payload housing according to any one of claims 1-8, characterized in that: The working steps of this hot isostatic pressing forming equipment are as follows: S1: Placing the jacket (6): Put the upper sealing cover (3) into the high-pressure cylinder body (2). First, the bottom of the loading circular plate (42) contacts the inner wall of the high-pressure cylinder body (2), and then the long baffle (59) contacts the inner wall of the high-pressure cylinder body (2). S2: Limiting the jacket (6): During the process of S1, the toothed plate (55) above the slot (54) cooperates with the gear (56), the second double-threaded rod (51) rotates, and the two pairs of fixing blocks (52) approach each other to limit and fix the two side edges of the loading plate (5). S3: Apply pressure to reseal the sleeve (6): During S1, the sealing circular plate (47) moves downward synchronously with the two connecting frames (43) to apply pressure again to seal the injection port above the sleeve (6). S4: Isostatic hot pressing, take the part and disassemble.

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