Additive manufacturing high-temperature alloy powder recycling tool

Abstract

The invention belongs to the technical field of alloy powder recovery and powder metallurgy, and particularly relates to an additive manufacturing high-temperature alloy powder recovery tool which comprises a containing sleeve and a sleeve cover and further comprises a fixing mechanism arranged between the two sides of the containing sleeve and the two sides of the sleeve cover and used for connecting the containing sleeve and the sleeve cover in a fastening mode. And the heat conduction mechanism is arranged between the containing sleeve and the sleeve cover, and the heating efficiency of the powder in the containing sleeve can be improved through the heat conduction mechanism. Recycled powder can be uniformly heated during sintering through a multi-path heat transfer design, the powder purification and performance optimization effects are guaranteed, meanwhile, the powder can be accurately and uniformly pressed, the problem of untight pressing or excessive pressing is avoided, and when the powder is sintered, heated and expanded, through the dual effects of elastic buffering and active exhaust, the powder can be effectively purified. The internal pressure is effectively relieved, tool damage and powder cracking are prevented, the powder recycling quality and efficiency are improved, and efficient cyclic utilization of high-temperature alloy powder resources is achieved.

Description

Technical Field

[0001] This invention belongs to the fields of alloy powder recycling and powder metallurgy technology, and in particular relates to a tooling for recycling high-temperature alloy powder from additive manufacturing. Background Technology

[0002] With the widespread application of additive manufacturing technology in aerospace, high-end equipment and other fields, the amount of waste high-temperature alloy powder generated in the production process continues to increase. Due to the high cost of raw materials and the complexity of the preparation process, the direct disposal of such high-temperature alloy powder not only causes huge waste of resources, but also increases the pressure of industrial solid waste treatment. In the recycling process of waste high-temperature alloy powder, it is necessary to use tooling to compress the loose waste powder into a relatively dense blank to avoid powder scattering or uneven composition in subsequent processing. Then, the tooling containing the powder blank is placed into heating equipment (such as sintering furnace, vacuum heat treatment furnace) for sintering or high-temperature treatment, such as the additive manufacturing high-temperature alloy powder recycling tooling disclosed in announcement number CN222058827U.

[0003] However, existing waste high-temperature alloy powder recycling fixtures face the problem of pressure runaway caused by thermal expansion and contraction of powder during the "pressing-sintering" process. Due to the temperature changes of the heating equipment during the sintering stage, the high-temperature alloy powder will undergo significant thermal expansion and contraction. When heated, the powder particles increase in volume and the entire billet expands. Since the fixtures are mostly rigid structures, they cannot effectively release internal pressure, resulting in a sharp increase in the pressure of the powder inside the fixture. This may not only cause the fixture to deform and crack, affecting its service life, but may also cause the powder billet to collapse, exposing the powder to secondary pollution in the heating environment, and even causing safety hazards such as powder splashing. It is difficult to meet the actual needs of large-scale recycling.

[0004] To address this, a tooling for recycling high-temperature alloy powder from additive manufacturing is proposed. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a tooling for recycling high-temperature alloy powder from additive manufacturing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a tooling for recycling high-temperature alloy powder from additive manufacturing, comprising a holding sleeve and a sleeve cover, and further comprising:

[0007] A fixing mechanism is provided between the two sides of the holding sleeve and the two sides of the cylinder cover, for fastening the holding sleeve and the cylinder cover together.

[0008] A heat-conducting mechanism is disposed between the container sleeve and the cap, and the heat-conducting mechanism can improve the heating efficiency of the powder inside the container sleeve;

[0009] A pressing mechanism is arranged between the top and bottom of the barrel cover and is used to press the powder in the inner part of the containing sleeve;

[0010] An adaptive pressure adjusting mechanism is arranged at the bottom of the pressing mechanism and is capable of adjusting the pressure of the powder in the inner part of the containing sleeve after being heated.

[0011] Preferably, the fixing mechanism comprises fixing blocks fixedly arranged on the side wall of the containing sleeve and the side wall of the barrel cover, and a fixing bolt and a fixing nut are arranged between two adjacent fixing blocks.

[0012] Preferably, the heat conducting mechanism comprises heat conducting holes arranged in the middle part of the containing sleeve and the middle part of the barrel cover, a plurality of annularly distributed supporting blocks are fixedly arranged around the bottom of the containing sleeve, a plurality of uniformly distributed first heat conducting grooves are arranged around the bottom of the containing sleeve, a plurality of the first heat conducting grooves and a plurality of the supporting blocks are arranged in an interlaced manner, and a plurality of uniformly distributed second heat conducting grooves are arranged on the side wall of the heat conducting hole of the containing sleeve.

[0013] Preferably, the pressing mechanism comprises two pressing rods symmetrically arranged on the barrel cover, a connecting rod is fixedly arranged at the upper end of the two pressing rods, a pressing ring is fixedly arranged at the lower end of the two pressing rods, the pressing ring is arranged in the inner part of the containing sleeve, a screw is threadedly arranged in the middle part of the rod wall of the connecting rod, a supporting seat is fixedly arranged in the inner part of the heat conducting hole of the barrel cover, the lower end of the screw is rotatably connected with the top of the supporting seat, and a knob is fixedly arranged at the upper end of the screw.

[0014] Preferably, scale lines are arranged on the rod wall of the two pressing rods along the length direction.

[0015] Preferably, the adaptive pressure adjusting mechanism comprises a pressure adjusting ring arranged in the inner part of the containing sleeve, the pressure adjusting ring is arranged below the pressing ring, a plurality of uniformly distributed telescopic rods are fixedly arranged between the pressure adjusting ring and the pressing ring, a spring is sleeved on the rod wall of each of the telescopic rods, and the two ends of the spring are fixedly connected with the pressure adjusting ring and the pressing ring, respectively.

[0016] Preferably, a sealing ring is fixedly arranged on the inner side wall and the outer side wall of the pressure adjusting ring, and the inner side wall and the outer side wall of the pressure adjusting ring are slidably connected with the inner side wall of the containing sleeve through the sealing ring.

[0017] Preferably, a plurality of uniformly distributed pressure relief grooves are arranged around the upper side of the inner wall of the containing sleeve, the lower end of each of the pressure relief grooves is arranged between the pressure adjusting ring and the pressing ring, and the upper end of each of the pressure relief grooves penetrates the upper surface of the barrel cover.

[0018] Compared with existing technologies, the advantages of this invention are as follows:

[0019] 1. Through the set heat conduction mechanism and pressure relief groove, the support block at the bottom of the sleeve can support the sleeve to form a bottom gap, so that the hot air flow in the vacuum heat treatment furnace can fully contact the first heat conduction groove. At the same time, the hot air flow can also enter the heat conduction hole and the second heat conduction groove on the inner wall. Combined with the hot air flow introduced by the pressure relief groove at the top of the sleeve, a multi-dimensional heat transfer path is constructed to ensure that the powder inside the sleeve is heated evenly from the surface to the core, avoiding sintering quality problems caused by local overheating or insufficient temperature.

[0020] 2. Through the set clamping mechanism and adaptive pressure adjustment mechanism, the operator turns the knob to drive the screw to rotate, converting the rotational motion into the vertical downward movement of the connecting rod and the clamping rod, which in turn pushes the clamping ring and the pressure adjustment ring to squeeze the powder; at the same time, the telescopic rod and spring of the adaptive pressure adjustment mechanism can play a buffering role during the pressing process, and adaptively adjust the pressure according to the fluffiness of the powder to prevent the instantaneous pressure concentration from causing the powder particles to break, and finally form a powder blank with uniform density and stable structure, which meets the process requirements of subsequent sintering.

[0021] 3. Through the adaptive pressure adjustment mechanism and pressure relief groove, when the powder expands due to heat during the sintering stage, it will push the pressure adjustment ring upward, causing the telescopic rod and spring to be further compressed. The elastic deformation absorbs the extrusion pressure generated by the expansion, avoiding the sudden increase in internal pressure of the sleeve, which may cause the sleeve to deform or the powder blank to crack. If the temperature rises sharply and causes the powder to expand excessively, the pressure adjustment ring will move upward past the lower end of the pressure relief groove, and the expanded gas can be discharged outside the sleeve through the pressure relief groove, completely avoiding the risk of powder damage due to excessive pressure, while protecting the integrity of the tooling structure. Attached Figure Description

[0022] Figure 1 This is a perspective view of an additive manufacturing high-temperature alloy powder recycling tool provided by the present invention, viewed from an oblique top.

[0023] Figure 2 This is a perspective view of an additive manufacturing high-temperature alloy powder recycling tool provided by the present invention, viewed from an oblique angle.

[0024] Figure 3 This is a three-dimensional view of a high-temperature alloy powder recycling tool for additive manufacturing provided by the present invention after being cut open;

[0025] Figure 4 This is a perspective view of the container sleeve in an additive manufacturing high-temperature alloy powder recycling tooling provided by the present invention, viewed from an oblique top view.

[0026] Figure 5 This is a perspective view of the cylinder cover, clamping mechanism, and adaptive pressure adjustment mechanism of an additive manufacturing high-temperature alloy powder recycling tooling provided by the present invention.

[0027] In the diagram: 1. Filling sleeve, 2. Cover, 3. Fixing mechanism, 31. Fixing block, 32. Fixing bolt, 33. Fixing nut, 4. Heat conduction mechanism, 41. Heat conduction hole, 42. Support block, 43. First heat conduction groove, 44. Second heat conduction groove, 5. Pressing mechanism, 51. Pressing rod, 52. Connecting rod, 53. Pressing ring, 54. Screw, 55. Support base, 56. Knob, 57. Scale line, 6. Adaptive pressure adjustment mechanism, 61. Pressure adjustment ring, 62. Telescopic rod, 63. Spring, 64. Sealing ring, 7. Pressure relief groove. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] like Figures 1-5 As shown, a tooling for recycling high-temperature alloy powder from additive manufacturing includes a holding sleeve 1 and a sleeve cover 2, and further includes:

[0030] The fixing mechanism 3 is located between the two sides of the holding sleeve 1 and the two sides of the cover 2, and is used to fasten the holding sleeve 1 and the cover 2. The fixing mechanism 3 includes fixing blocks 31 fixedly installed on the side walls of the holding sleeve 1 and the cover 2. There are fixing bolts 32 and fixing nuts 33 that cooperate with each other between two adjacent fixing blocks 31. The fixing bolts 32 and fixing nuts 33 make it easy to disassemble and assemble the cover 2 and the holding sleeve 1.

[0031] A heat-conducting mechanism 4 is disposed between the holding sleeve 1 and the cover 2, and the heat-conducting mechanism 4 can improve the heating efficiency of the powder inside the holding sleeve 1. The heat-conducting mechanism 4 includes heat-conducting holes 41 disposed in the middle of the holding sleeve 1 and the middle of the cover 2. Multiple annularly distributed support blocks 42 are fixedly disposed around the bottom of the holding sleeve 1. Multiple uniformly distributed first heat-conducting grooves 43 are opened around the bottom of the holding sleeve 1. The multiple first heat-conducting grooves 43 and the multiple support blocks 42 are arranged alternately. Multiple uniformly distributed second heat-conducting grooves 44 are opened on the side wall of the heat-conducting holes 41 of the holding sleeve 1. The support blocks 42 can raise the holding sleeve 1 and place it on the internal placement surface of the vacuum heat treatment furnace, ensuring that there is a gap at the bottom of the holding sleeve 1. The first heat-conducting grooves 43 can increase the contact area between the bottom of the holding sleeve 1 and the hot air flow. At the same time, the heat-conducting holes 41 and the second heat-conducting grooves 44 can also increase the contact area between the inner side wall of the holding sleeve 1 and the hot air flow.

[0032] The pressing mechanism 5 is arranged between the top and bottom of the cylinder cover 2, and is used to press the powder in the inner part of the containing sleeve 1. The pressing mechanism 5 comprises two pressing rods 51 symmetrically and slidingly arranged on the cylinder cover 2. The upper ends of the two pressing rods 51 are fixedly provided with a same connecting rod 52, and the lower ends of the two pressing rods 51 are fixedly provided with a same pressing ring 53 which is slidingly arranged in the inner part of the containing sleeve 1. A screw rod 54 is threadedly arranged in the middle of the rod wall of the connecting rod 52. A supporting seat 55 is fixedly arranged in the inner part of the heat-conducting hole 41 of the cylinder cover 2. The lower end of the screw rod 54 is rotationally connected with the top of the supporting seat 55, and the upper end of the screw rod 54 is fixedly provided with a knob 56. Rotating the knob 56 drives the screw rod 54 to rotate. Since the screw rod 54 is threadedly connected with the connecting rod 52, the rotating movement of the screw rod 54 is converted into the vertical downward movement of the connecting rod 52, thereby driving the two pressing rods 51 at both ends to move downward synchronously. During the downward movement of the pressing rod 51, the pressing ring 53 at the lower end thereof moves downward, so that the pressing ring 53 moves downward in the inner part of the containing sleeve 1. Scale lines 57 are arranged on the rod walls of the two pressing rods 51 along the length direction thereof. The scale lines 57 can be used to accurately control the downward movement distance of the pressing rod 51, so as to accurately control the pressing force on the powder.

[0033] The adaptive pressure adjusting mechanism 6 is arranged at the bottom of the pressing mechanism 5, and can adjust the pressure of the powder in the inner part of the containing sleeve 1 after being heated. The adaptive pressure adjusting mechanism 6 comprises a pressure adjusting ring 61 which is slidingly arranged in the inner part of the containing sleeve 1. The pressure adjusting ring 61 is located below the pressing ring 53, and a plurality of uniformly distributed expansion rods 62 are fixedly arranged between the pressure adjusting ring 61 and the pressing ring 53. A spring 63 is sleeved on the rod wall of each expansion rod 62, and the two ends of the spring 63 are fixedly connected with the pressure adjusting ring 61 and the pressing ring 53, respectively. Sealing rings 64 are fixedly arranged on the inner side wall and the outer side wall of the pressure adjusting ring 61, and the inner side wall and the outer side wall of the pressure adjusting ring 61 are slidingly connected with the inner side wall of the containing sleeve 1 through the sealing rings 64. The sealing rings 64 can increase the sliding sealing property between the pressure adjusting ring 61 and the inner side wall of the containing sleeve 1, so as to avoid the phenomenon of air leakage.

[0034] A plurality of uniformly distributed pressure relief grooves 7 are arranged on the inner wall of the containing sleeve 1. The lower ends of the pressure relief grooves 7 are located between the pressure adjusting ring 61 and the pressing ring 53, and the upper ends of the pressure relief grooves 7 penetrate through the upper surface of the cylinder cover 2. When the pressure adjusting ring 61 moves upward to pass the lower end openings of the pressure relief grooves 7, the gas generated by the expansion of the powder in the inner part of the containing sleeve 1 will be quickly discharged through the channels of the pressure relief grooves 7, and finally released into the vacuum heat treatment furnace through the exhaust port at the top of the cylinder cover 2.

[0035] The operating principle of the application is described as follows: first, the worker pre-treats the recycled additive manufacturing high-temperature alloy powder (such as screening to remove impurities, drying to remove moisture), ensures that the powder state meets the pressing requirements, then uniformly weighs the powder into multiple portions through a high-precision measuring scale, and precisely controls each portion to be 4.25 kg. This weight not only adapts to the maximum capacity of 4.5 kg of the containing sleeve 1 (a small amount of loading margin is reserved to avoid powder overflow), but also reserves a reasonable expansion space for subsequent compaction;

[0036] After preparation, the worker loosens the fixing bolts 32 and the matching fixing nuts 33 at the connection between the containing sleeve 1 and the cylinder cover 2 using a wrench, removes the cylinder cover 2 and places it on a clean operation table (to avoid contamination of the inner surface of the cylinder cover 2, which affects subsequent sealing), then slowly pours the 4.25 kg of high-temperature alloy powder into the containing sleeve 1, taps the side wall of the containing sleeve 1 during the pouring process to make the powder naturally flatten and reduce internal voids, preventing local accumulation that leads to uneven compaction later, after the powder is filled, the worker fastens the cylinder cover 2 on the top of the containing sleeve 1 to ensure that the sealing surface of the cylinder cover 2 is completely aligned with the sleeve, then tightens the fixing bolts 32 and the fixing nuts 33 on both sides in turn to achieve a tight seal between the cylinder cover 2 and the containing sleeve 1, preventing powder leakage or impurities from entering during subsequent pressing and heating;

[0037] After the cylinder cover 2 is installed stably, the worker operates the knob 56 and rotates it clockwise. The rotation of the knob 56 synchronously drives the rotation of the screw rod 54. Since the screw rod 54 and the connecting rod 52 are threadedly connected, the rotational movement of the screw rod 54 is converted into the vertical downward movement of the connecting rod 52, which in turn drives the synchronous downward movement of the two compression rods 51. During the downward movement of the compression rod 51, the compression ring 53 at the lower end moves downward, causing the compression ring 53 to move downward inside the containing sleeve 1. Since the bottom of the compression ring 53 is connected to the pressure adjusting ring 61 through the extension rod 62 and the spring 63, the pressure adjusting ring 61 moves downward synchronously with the compression ring 53 until it contacts the surface of the powder in the containing sleeve 1.

[0038] As the worker continues to rotate the knob 56, the pressure adjusting ring 61 is continuously pressed downward by the thrust of the compression ring 53, which gradually compresses the extension rod 62 and the matching spring 63 between the pressure adjusting ring 61 and the compression ring 53 (the initial compression amount is small, only serving as a buffer). This elastic structure can avoid the instantaneous concentration of pressure that causes the powder particles to break, and can also adaptively adjust the pressure according to the actual bulkiness of the powder to ensure uniform pressure on the powder. In addition, the rod wall of the compression rod 51 is provided with millimeter-level scale lines 57, which can be observed by the worker during the pressing process to accurately control the downward movement distance of the compression ring 53. For 4.25 kg of powder, when the downward movement distance reaches 31-32 mm, the rotation of the knob 56 can be stopped (the downward movement distance is obtained through multiple experiments).

[0039] Through the above operation, on the one hand, it prevents "not tight enough" to cause insufficient density of the powder blank, avoids the collapse of the blank due to loose structure when heated subsequently, and avoids "over-pressing" to break the powder particles and destroy the particle size distribution, while reserving enough space for the thermal expansion of the powder in the heating stage, preventing the internal pressure from increasing suddenly and causing the deformation or cracking of the containment sleeve 1, and finally ensuring the uniform density and stable structure of the pressed powder blank, laying a high-quality foundation for the subsequent sintering and remelting powder spraying steps;

[0040] After the powder in the containment sleeve 1 is completed, the staff uses high-temperature tool clamps to transfer the sealed containment sleeve 1 to the vacuum heat treatment furnace, and places it on the support table in the furnace according to the preset station. When placing, ensure that the support block 42 at the bottom of the containment sleeve 1 is accurately fitted with the placement surface in the furnace to avoid the inclination of the containment sleeve 1 affecting the uniformity of subsequent heating. Then start the vacuum system of the vacuum heat treatment furnace, and at the same time, start the heating module to begin the powder sintering process. The sintering process follows the parameter setting of "750℃ for 4h".

[0041] In the sintering process, the hot gas flow formed in the vacuum heat treatment furnace flows into the gap between the bottom of the containment sleeve 1 and the placement surface in the furnace. Due to the support of the support block 42 at the bottom of the containment sleeve 1, the gap remains stable, allowing the hot gas flow to fully contact the first heat-conducting groove 43 at the bottom of the containment sleeve 1. The first heat-conducting groove 43 expands the heat exchange area, quickly transferring heat to the bottom of the sleeve. At the same time, the hot gas flow enters the heat-conducting holes 41 inside the containment sleeve 1 and the second heat-conducting grooves 44 on the inner wall. In addition, the hot gas flow also enters the containment sleeve 1 through the multiple pressure relief grooves 7 on the top of the cylinder cover 2, fully contacts the surface of the pressure regulating ring 61, and then transfers heat to the powder in the central area of the containment sleeve 1. This multi-dimensional and all-around hot gas flow contact method completely breaks through the limitations of traditional single-wall heat transfer, ensuring that the powder inside the containment sleeve 1 can be uniformly heated from the surface to the core, significantly improving the overall quality of powder sintering.

[0042] As the sintering process advances, the temperature of the powder inside the containment sleeve 1 gradually rises, and the volume of the powder particles gradually expands due to the principle of thermal expansion and contraction. The expanded powder will generate an upward thrust on the pressure regulating ring 61 above, causing the pressure regulating ring 61 to slowly move upward along the axial direction of the containment sleeve 1. In this process, the extension rod 62 and the matching spring 63 between the pressure regulating ring 61 and the pressing ring 53 are further compressed (compared to the pressing stage, the compression amount changes dynamically with the degree of powder expansion). The spring 63 can absorb the extrusion force generated by the expansion of the powder in real time, avoiding the direct effect of the extrusion force on the inner wall of the containment sleeve 1, which prevents the containment sleeve 1 from deforming or cracking due to excessive pressure, and avoids the breakage of powder particles due to excessive extrusion, ensuring that the original particle size characteristics of the powder are not damaged.

[0043] If the temperature inside the vacuum heat treatment furnace fluctuates and causes the temperature inside the holding sleeve 1 to rise sharply, the degree of powder expansion will increase, and the force pushing the pressure regulating ring 61 will also increase. When the pressure regulating ring 61 moves up to the lower end opening of the pressure relief groove 7, the gas generated by the expansion of the powder inside the holding sleeve 1 (such as small molecule gas generated by impurity decomposition, residual gas in the gap of the powder) will quickly pass through the channel of the pressure relief groove 7, and finally be released to the top of the cylinder cover 2 through the pressure relief groove 7, and be discharged into the vacuum heat treatment furnace (the vacuum system in the furnace can timely remove these gases). Both the elastic structure buffers the normal expansion pressure and the pressure relief groove 7 discharges the excess gas in extreme cases, completely avoiding the risk of powder cracking and splashing due to excessive pressure, ensuring the safety and stability of the entire sintering process, and maximizing the reuse performance of the powder.

[0044] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A tooling for recycling high-temperature alloy powder from additive manufacturing, comprising a holding sleeve (1) and a cap (2), characterized in that, Also includes: A fixing mechanism (3) is provided between the two sides of the holding sleeve (1) and the two sides of the cylinder cover (2) for fastening the holding sleeve (1) and the cylinder cover (2). A heat conduction mechanism (4) is disposed between the container sleeve (1) and the cover (2), and the heat conduction mechanism (4) can improve the heating efficiency of the powder inside the container sleeve (1); A pressing mechanism (5) is provided between the top and bottom of the cylinder cover (2), and the pressing mechanism (5) is used to press the powder inside the holding sleeve (1); An adaptive pressure adjustment mechanism (6) is provided at the bottom of the pressing mechanism (5), and the adaptive pressure adjustment mechanism (6) can adjust the pressure of the powder inside the holding sleeve (1) after it is heated.

2. The additive manufacturing high-temperature alloy powder recycling tooling according to claim 1, characterized in that, The fixing mechanism (3) includes fixing blocks (31) fixedly disposed on the side wall of the holding sleeve (1) and the side wall of the cover (2), and fixing bolts (32) and fixing nuts (33) that cooperate with each other are provided between two adjacent fixing blocks (31).

3. The additive manufacturing high-temperature alloy powder recycling tooling according to claim 1, characterized in that, The heat conduction mechanism (4) includes heat conduction holes (41) disposed in the middle of the container sleeve (1) and the middle of the cover (2). The bottom of the container sleeve (1) is fixedly surrounded by a plurality of annularly distributed support blocks (42). The bottom of the container sleeve (1) is surrounded by a plurality of uniformly distributed first heat conduction grooves (43). The plurality of first heat conduction grooves (43) and the plurality of support blocks (42) are arranged alternately. The sidewall of the heat conduction hole (41) of the container sleeve (1) is provided with a plurality of uniformly distributed second heat conduction grooves (44).

4. The additive manufacturing high-temperature alloy powder recycling tooling according to claim 1, characterized in that, The clamping mechanism (5) includes two clamping rods (51) symmetrically slidably disposed on the cylinder cover (2). The upper ends of the two clamping rods (51) are fixedly provided with the same connecting rod (52), and the lower ends of the two clamping rods (51) are fixedly provided with the same clamping ring (53). The clamping ring (53) is slidably disposed inside the holding sleeve (1). The middle part of the rod wall of the connecting rod (52) is threaded with a screw (54). The heat conduction hole (41) on the cylinder cover (2) is fixedly provided with a support seat (55). The lower end of the screw (54) is rotatably connected to the top of the support seat (55), and the upper end of the screw (54) is fixedly provided with a knob (56).

5. The additive manufacturing high-temperature alloy powder recycling tooling according to claim 4, characterized in that, The walls of the two clamping rods (51) are provided with scale lines (57) along their length.

6. The additive manufacturing high-temperature alloy powder recycling tooling according to claim 4, characterized in that, The adaptive pressure adjustment mechanism (6) includes a pressure adjustment ring (61) slidably disposed inside the holding sleeve (1). The pressure adjustment ring (61) is located below the clamping ring (53), and a plurality of evenly distributed telescopic rods (62) are fixedly disposed between the pressure adjustment ring (61) and the clamping ring (53). The walls of the plurality of telescopic rods (62) are fitted with springs (63), and the two ends of the springs (63) are fixedly connected to the pressure adjustment ring (61) and the clamping ring (53) respectively.

7. The additive manufacturing high-temperature alloy powder recycling tooling according to claim 6, characterized in that, The inner and outer walls of the pressure regulating ring (61) are both fixedly provided with sealing rings (64), and the inner and outer sides of the pressure regulating ring (61) are slidably connected to the inner wall of the holding sleeve (1) through the sealing rings (64).

8. The additive manufacturing high-temperature alloy powder recycling tooling according to claim 6, characterized in that, The inner wall of the holding sleeve (1) is provided with a plurality of evenly distributed pressure relief grooves (7). The lower ends of the plurality of pressure relief grooves (7) are located between the pressure regulating ring (61) and the clamping ring (53), and the upper ends of the plurality of pressure relief grooves (7) penetrate the upper surface of the cylinder cover (2).

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