Auxiliary tool for hot isostatic pressing treatment of target material
By designing an auxiliary tool for thermal isostatic pressing process, the problems of unstable stacking of ingots and air leakage in the degassing pipe are solved, and the stability and density of ingots and billets are improved.
Patent Information
- Application Number
- CN202421536007.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-07-01
AI Technical Summary
In the thermal isostatic pressing process, the stacked ingot billet is unstable. As the process temperature and pressure are applied, the ingot billet will shrink and decrease, resulting in the stacking instability, increasing the risk of bumps and leaks at the degassing pipe sealing and welding, resulting in the density of the ingot billet being unqualified and scrapped.
An auxiliary tool for thermal isostatic pressure treatment of target materials is designed, including an upper flat plate, a vertical plate and a lower flat plate. By placing it in the convex ring on the upper end surface of the ingot billet, the auxiliary tool can stack multiple ingots vertically, which will enhance stability, and reduce the risk of bumps by designing the degassing pipe and hanging lugs.
It improves the stability and reliability of the stacking of low ingots, reduces the risk of bumps and air leakage at the weld sealing port of the degassing pipe, increases the number and weight of the stacking of ingots, and increases the HIP furnace loading and pass rate.
Smart Images
Figure CN222830723U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of target material auxiliary tooling, and in particular to an auxiliary tooling for target material hot isostatic pressing. Background Art
[0002] Hot isostatic pressing (HIP) is a process technology that uses high temperature and high pressure to make metal or ceramic products undergo isotropic pressure, so that the products can be sintered and densified. Since the materials prepared by hot isostatic pressing have the advantages of high density, wider range of material composition ratio, fine and uniform grain structure, isotropic mechanical properties, low cost, and suitable for mass production, they are widely used in target material preparation. The main process flow of hot isostatic pressing target material is to put the mixed powder into a package of a certain shape and size, evacuate the package to a certain vacuum degree and then seal it, and then put it into the hot isostatic press to match the appropriate temperature and pressure to achieve powder densification and form a target material. Due to the need for degassing and sealing, a degassing tube is generally connected in the middle of the upper end face of the package. The height of the degassing tube is usually 5~15cm. After degassing, the degassing tube is sealed. The outer periphery of the upper end face of the package bulges upward to form a convex ring, and some convex rings are also provided with two symmetrical vertical ears. The ingot is composed of the cladding, degassing tube and the target material inside. Due to the different heights of the cladding, the targets formed by the HIP process in the same furnace may be tall or short. At present, in order to make full use of the space in the hot isostatic pressing furnace, increase the furnace loading capacity and reduce the HIP cost, the short ingots are often stacked. Figure 1 When stacking the ingots, the upper sleeve is placed in a misaligned manner relative to the lower degassing tube, and the upper sleeve also avoids the two lifting ears, and too many ingots cannot be stacked, in order to reduce the collision between the degassing tube seal and the weld on the upper end of the sleeve, and prevent the sleeve from leaking. First, the ingots stacked in this way are unstable. Secondly, with the application of HIP process temperature and pressure, the diameter and height of the ingots will shrink, and the stacked ingots will become more unstable, prone to uncontrollable azimuth movement, and increase the risk of collision and leakage at the degassing tube seal, which will result in unqualified density and scrapping of the ingots. Utility Model Content
[0003] In view of the fact that during the hot isostatic pressing process of manufacturing target materials, stacking multiple ingots poses a greater risk of instability and the risk of degassing tubes being easily bumped and causing leakage, the present application proposes auxiliary tooling for hot isostatic pressing of target materials, which can improve this situation.
[0004] An auxiliary tooling for hot isostatic pressing of a target material, the auxiliary tooling is used to assist in the stacking of ingots. The ingot has a cylindrical sheath and a degassing tube. The degassing tube is connected to the upper end face of the sheath. The outer circumference of the upper end face of the sheath bulges upward to form a convex ring. The auxiliary tooling includes an upper plate, a vertical plate and a lower plate. The upper and lower ends of the vertical plate are respectively connected to the upper plate and the lower plate. The upper plate is parallel to the lower plate. The lower plate is configured to be placed within the convex ring. The lower plate is also provided with a lower open notch for avoiding the degassing tube. The vertical plate avoids the degassing tube.
[0005] By adopting the above technical solution, the auxiliary tooling can be placed inside the convex ring of the upper end face of the ingot, and another ingot can be placed on the upper plate, and so on. By placing the auxiliary tooling between each two adjacent upper and lower ingots, multiple ingots can be stacked vertically. The stacked composition has a stable shape, and can protect the degassing tube, reduce the collision of the degassing tube, and reduce the risk of leakage. It should be noted that since the degassing tube must be degassed first and then welded, the shape of the degassing tube can be changed during welding. For example, the degassing tube is bent to a height less than the vertical plate. When using this auxiliary tooling, the degassing tube is shielded in the tooling and will not interfere with the upper plate. Therefore, even if the upper plate does not have a clearance opening, and the height of the degassing tube before welding is greater than the height of the vertical plate, since the auxiliary tooling is placed after the degassing tube is welded, the interference between the degassing tube and the upper plate can be avoided by bending the degassing tube during the welding process. Therefore, this auxiliary tooling is still suitable for assisting the stacking of ingots and is not easy to become unstable.
[0006] A preferred structure of the auxiliary tooling for target hot isostatic pressing treatment is that the upper plate is provided with an upper open notch, the upper open notch and the lower open notch are aligned in vertical alignment, and the upper open notch is arranged to avoid the degassing tube.
[0007] By adopting the above technical solution, the three-dimensional space for avoiding the degassing pipe is increased, the safety factor is improved, and it is also convenient to observe the position and other conditions of the degassing pipe contained in the auxiliary tooling.
[0008] A preferred structure of the auxiliary tooling for target hot isostatic pressing treatment is that the upper open notch and the lower open notch are the same in shape and size.
[0009] By adopting the above technical solution, it is convenient to align the upper and lower parts to avoid the degassing pipe and observe the internal conditions of the tooling.
[0010] A preferred structure of the auxiliary tooling for target hot isostatic pressing is that two symmetrical vertical lifting ears are arranged on the convex ring of the ingot, and the distance between the upper plate and the lower plate is greater than the sum of the heights of the lifting ears and the convex ring.
[0011] By adopting the above technical solution, the auxiliary tooling avoids the lifting lugs and maintains the stability of the stacked ingots.
[0012] A preferred structure of the auxiliary tooling for target hot isostatic pressing is that the lower end of the vertical plate is connected to the inside of the lower flat plate, and the upper end of the vertical plate is connected to the inside of the upper flat plate.
[0013] By adopting the above technical solution, the vertical plate is not likely to collide or interfere with the convex ring, the ear, etc.
[0014] A preferred structure of the auxiliary tooling for target hot isostatic pressing treatment is that the sleeve is cylindrical and the convex ring is circular; the upper plate and the lower plate are both circular, and the diameter of the lower plate is 70-90% of the inner diameter of the convex ring.
[0015] By adopting the above technical solution, since the ingot including the convex ring shrinks to a certain extent after hot isostatic pressing, the maximum diameter of the above-mentioned lower plate is 90% of the inner diameter of the convex ring, which can prevent the lower plate from being stuck in the convex ring. The minimum diameter of the above-mentioned lower plate is 70% of the inner diameter of the convex ring, which can reduce the risk of large-scale sliding of the lower plate in the convex ring and improve stability.
[0016] A preferred structure of the auxiliary tooling for hot isostatic pressing of the target material is that the sleeve is in the shape of a square column, the convex ring is in the shape of a square; the upper plate and the lower plate are both in the shape of a square; the length of the lower plate is 70-90% of the inner length of the convex ring, and the width of the lower plate is 70-90% of the inner width of the convex ring.
[0017] By adopting the above technical solution, since the ingot including the convex ring shrinks to a certain extent after hot isostatic pressing, the length and width of the above-mentioned lower plate are at most 90% of the convex ring, which can prevent the lower plate from being stuck in the convex ring. The length and width of the above-mentioned lower plate are at least 70% of the convex ring, which can reduce the risk of large-scale sliding of the lower plate in the convex ring and improve stability.
[0018] A preferred structure of the auxiliary tooling for target hot isostatic pressing treatment is that the distance between the upper plate and the lower plate is greater than the height of the degassing tube before sealing and welding.
[0019] By adopting the above technical solution, the upper flat plate and the degassing pipe before sealing and welding will not interfere with each other, which reduces the requirements for sealing and welding and improves the convenience of operation.
[0020] In summary, the auxiliary tooling for target hot isostatic pressing of the present application has the following beneficial effects:
[0021] By applying hot isostatic pressing auxiliary tooling, the stability and reliability of the stacking position of short ingots are improved, and the collision and leakage of the degassing tube sealing joint caused by shrinkage instability of the stacked ingots during the target material HIP (hot isostatic pressing) process is improved. The number and weight of the stacked ingots can also be increased, and the HIP furnace loading capacity can be increased. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is a diagram of the current ingot stacking method.
[0023] Figure 2 This is a structural diagram of the auxiliary tooling of this application.
[0024] Figure 3 This is a combined diagram of the auxiliary tooling of the present application placed on an ingot.
[0025] Figure 4 This is a combination diagram of using the auxiliary tooling of the present application to stack multiple ingots alternately vertically.
[0026] Reference numerals: auxiliary tooling 1; ingot 2; sleeve 21; degassing tube 22; upper end surface 211; convex ring 212; upper flat plate 11; vertical plate 12; lower flat plate 13; lower open notch 131; upper open notch 111; lifting lug 213. DETAILED DESCRIPTION
[0027] Some embodiments of the auxiliary tooling for target hot isostatic pressing of the present application are described in detail below with reference to the accompanying drawings.
[0028] Please refer to Figure 2 , an auxiliary tooling for target hot isostatic pressing treatment, the auxiliary tooling 1 is used to assist in the stacking of ingots 2.
[0029] Please refer to Figure 1 The ingot 2 has a cylindrical sheath 21 and a degassing tube 22, both of which are made of metal. The degassing tube 22 is connected to the upper end surface 211 of the sheath 21. The outer circumference of the upper end surface 211 of the sheath 21 bulges upward to form a convex ring 212. The sheath 21 can be cylindrical or square, and the corresponding convex ring 212 can be adapted to be circular or square.
[0030] Please refer to Figure 2 The auxiliary tooling 1 includes an upper plate 11, a vertical plate 12 and a lower plate 13. The upper plate 11, the vertical plate 12 and the lower plate 13 can all be made of stainless steel, and their thickness should be configured to have a good load-bearing capacity. The upper and lower ends of the vertical plate 12 are respectively connected to the upper plate 11 and the lower plate 13. The upper plate 11 is parallel to the lower plate 13. Please refer to Figure 3, the lower plate 13 is configured to be placed in the convex ring 212. The lower plate 13 is also provided with a lower open notch 131 for avoiding the degassing tube 22, and the notch may be in the shape of a strip, inwardly exceeding the center position of the lower plate 13. The vertical plate 12 avoids the degassing tube 22. For example, the vertical plate 12 is provided with an open ring around the degassing tube 22.
[0031] The auxiliary tooling 1 can be placed in the convex ring 212 of the upper end surface 211 of the ingot 2, and another ingot 2 can be placed on the upper plate 11. Figure 4 , and so on, by placing the auxiliary tooling 1 between each two adjacent upper and lower ingots 2, multiple ingots 2 can be stacked vertically, and can be stacked to the maximum height in the hot isostatic pressing furnace. The stacked composition has a stable shape, and can protect the degassing tube 22, reduce the collision of the degassing tube 22, and reduce the risk of leakage. It should be noted that since the degassing tube 22 must be degassed first and then welded, the shape of the degassing tube 22 can be changed during welding, for example, the degassing tube 22 is bent to a height less than the vertical plate 12. When using this auxiliary tooling 1, the degassing tube 22 is shielded in the tooling and will not interfere with the upper plate 11. Therefore, even if the upper plate 11 does not have a clearance opening and the height of the degassing tube 22 before welding is greater than the height of the vertical plate 12, since the auxiliary tool 1 is placed after the degassing tube 22 is welded, the degassing tube 22 can be bent during the welding process to avoid interference between the degassing tube 22 and the upper plate 11. Therefore, the auxiliary tool 1 is still suitable for assisting the stacking of ingots 2 and is not easy to become unstable.
[0032] The upper plate 11 may also be provided with an upper open notch 111, the upper open notch 111 and the lower open notch 131 are aligned in a vertical position, and the upper open notch 111 is configured to avoid the degassing pipe 22. This design increases the space for avoiding the degassing pipe 22, improves the safety factor, and is also convenient for observing the position and other conditions of the degassing pipe 22 contained in the auxiliary tooling 1.
[0033] Preferably, the upper open notch 111 and the lower open notch 131 are of the same shape and size, so as to facilitate upper and lower alignment to avoid the degassing pipe 22 and observe the internal conditions of the tooling.
[0034] Please refer to Figure 3 Since two symmetrical vertical ears 213 are set on the convex ring 212 of some ingots 2, the distance between the upper plate 11 and the lower plate 13 can be designed to be greater than the sum of the heights of the ears 213 and the convex ring 212. The auxiliary tooling 1 avoids the ears 213 and maintains the stability of the stacked ingots 2.
[0035] In order to reduce the collision between the vertical plate 12 and the ear 213, etc., the lower end of the vertical plate 12 can be designed to be connected to the inside of the lower flat plate 13, and the upper end of the vertical plate 12 can be connected to the inside of the upper flat plate 11, that is, the vertical plate 12 as a whole is within the outer periphery of the upper flat plate 11 and the lower flat plate 13, so that the vertical plate 12 is not easy to collide or interfere with the convex ring 212, the ear 213, etc.
[0036] Please refer to Figure 1 One shape of the ingot 2 is that the sleeve 21 is cylindrical and the convex ring 212 is circular. The upper plate 11 and the lower plate 13 are both circular, and the vertical plate 12 is arc-shaped and welded inside the upper plate 11 and the lower plate 13. The vertical plate 12 avoids the lower open notch 131 and the upper open notch 111. The diameter of the lower plate 13 is 70-90% of the inner diameter of the convex ring 212. Since the ingot 2 including the convex ring 212 shrinks to a certain extent after the hot isostatic pressing treatment, the maximum diameter of the lower plate 13 is 90% of the inner diameter of the convex ring 212, which can prevent the lower plate 13 from being stuck in the convex ring 212. The minimum diameter of the lower plate 13 is 70% of the inner diameter of the convex ring 212, which can reduce the risk of the lower plate 13 sliding in a large range in the convex ring 212 and improve stability.
[0037] Another shape of the ingot 2 is that the sleeve 21 is a square column (not shown), and the convex ring 212 is a square. The upper plate 11 and the lower plate 13 are both square. The length of the lower plate 13 is 70-90% of the inner length of the convex ring 212, and the width of the lower plate 13 is 70-90% of the inner width of the convex ring 212. Since the ingot 2 including the convex ring 212 shrinks to a certain extent after the hot isostatic pressing treatment, the length and width of the lower plate 13 are at most 90% of the convex ring 212, which can prevent the lower plate 13 from being stuck in the convex ring 212. The length and width of the lower plate 13 are at least 70% of the convex ring 212, which can reduce the risk of the lower plate 13 sliding in a large range in the convex ring 212 and improve stability.
[0038] The auxiliary tooling 1 of the present application can also set the distance between the upper plate 11 and the lower plate 13 to be greater than the height of the degassing tube 22 before sealing and welding, so that the upper plate 11 and the degassing tube 22 before sealing and welding do not interfere with each other, reducing the requirements for sealing and welding and improving the convenience of operation. After using this tooling, the short ingots 2 are more stable after being stacked before and during HIP, and there is basically no instability of the ingots 2 and collision of the sealing port of the degassing tube 22, which can increase the HIP furnace loading capacity and qualified rate.
[0039] In summary, the auxiliary tooling for hot isostatic pressing of the target material of the present application improves the stability and reliability of the stacking position of the short ingots 2 by applying the auxiliary tooling 1 for hot isostatic pressing, improves the collision and leakage of the sealing joint of the degassing tube 22 caused by shrinkage instability during the stacking of the ingots 2 in the target material HIP (hot isostatic pressing) process, and can also increase the number and weight of the stacked ingots 2 and increase the HIP furnace loading capacity.
[0040] The above are only some embodiments of the present application, and the protection scope of the present application is not limited to the above embodiments. For ordinary technicians in this technical field, some improvements and modifications without departing from the creative design of the present application should also fall within the protection scope of the present application.
Claims
1. An auxiliary tooling for target hot isostatic pressing, characterized in that: The auxiliary tooling (1) is used to assist in stacking ingots (2); the ingots (2) have a cylindrical sheath (21) and a degassing tube (22); the degassing tube (22) is connected to the upper end surface (211) of the sheath (21); the outer circumference of the upper end surface (211) of the sheath (21) protrudes upward to form a protruding ring (212); The auxiliary tooling (1) comprises an upper plate (11), a vertical plate (12) and a lower plate (13); the upper and lower ends of the vertical plate (12) are respectively connected to the upper plate (11) and the lower plate (13); the upper plate (11) is parallel to the lower plate (13); the lower plate (13) is configured to be placed in the convex ring (212); the lower plate (13) is further provided with a lower open notch (131) for avoiding the degassing pipe (22); the vertical plate (12) avoids the degassing pipe (22).
2. The auxiliary tooling for target hot isostatic pressing according to claim 1, characterized in that: The upper plate (11) is provided with an upper open notch (111), the upper open notch (111) and the lower open notch (131) are in a vertically aligned position, and the upper open notch (111) is arranged to avoid the degassing tube (22).
3. The auxiliary tooling for target hot isostatic pressing according to claim 2, characterized in that: The upper open notch (111) and the lower open notch (131) are of the same shape and size.
4. The auxiliary tooling for target hot isostatic pressing according to claim 1, characterized in that: Two symmetrical vertical lifting ears (213) are arranged on the convex ring (212) of the ingot (2); the distance between the upper plate (11) and the lower plate (13) is greater than the sum of the heights of the lifting ears (213) and the convex ring (212).
5. The auxiliary tooling for target hot isostatic pressing according to claim 1 or 4, characterized in that: The lower end of the vertical plate (12) is connected to the inside of the lower flat plate (13); and the upper end of the vertical plate (12) is connected to the inside of the upper flat plate (11).
6. The auxiliary tooling for target hot isostatic pressing according to claim 1, characterized in that: The sleeve (21) is cylindrical, and the convex ring (212) is circular; the upper plate (11) and the lower plate (13) are both circular, and the diameter of the lower plate (13) is 70% to 90% of the inner diameter of the convex ring (212).
7. The auxiliary tooling for target hot isostatic pressing according to claim 1, characterized in that: The sleeve (21) is in the shape of a square column, and the convex ring (212) is in the shape of a square; the upper plate (11) and the lower plate (13) are both in the shape of a square; the length of the lower plate (13) is 70% to 90% of the inner length of the convex ring (212), and the width of the lower plate (13) is 70% to 90% of the inner width of the convex ring (212).
8. The auxiliary tooling for target hot isostatic pressing according to claim 1, characterized in that: The distance between the upper plate (11) and the lower plate (13) is greater than the height of the degassing tube (22) before sealing and welding.