CN-122015499-A - Modularized integrated vacuum high-temperature sintering forming device adapting to multiple force field environments

CN122015499ACN 122015499 ACN122015499 ACN 122015499ACN-122015499-A

Abstract

The invention discloses a modularized integrated vacuum high-temperature sintering forming device adapting to a multiple force field environment, which comprises a metal sealing experiment box body and an internally integrated axle center heating component, wherein the axle center heating component adopts a high-temperature resistant vacuum sealing tube end face sealing structure and is combined with a loose fastening mechanism, so that the quick plug and the electric/mechanical double locking of a sample unit are realized, the connection failure and floating problems under dynamic load are solved, a tubular silicon nitride heat transfer matrix is matched with a zirconia and aerogel multilayer heat insulation structure arranged outside, the high-temperature sintering of a wide temperature area ranging from 1100 ℃ to 1600 ℃ is realized under low power consumption, the surface temperature rise of the box body is effectively controlled, the rotating acceleration component is connected through a mechanical interface, the gravity-variable experiment environment is constructed by utilizing centrifugal force, the whole volume is small, the shock resistance is strong, and the harsh requirements of space station operation and ground hypergravity simulation are met.

Inventors

ZHOU KAILI
Yu Yejianding
ZHU XIAOQING
XIE SHUYAN
DING LIEYUN
ZHOU YAN
ZHOU CHENG

Assignees

常州蓝泰光电科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260319

Claims (10)

1. The modularized integrated vacuum high-temperature sintering forming device suitable for the environment of multiple force fields comprises an experiment box body (3), wherein the outer shell of the experiment box body is made of metal, a power supply socket (310) and a vacuumizing interface (230) are arranged on the surface of the experiment box body, a datum plane and a high-strength mechanical interface are arranged in the experiment box body (3), the device is used for being installed on a rotary acceleration disc assembly (4) so as to bear an inner assembly under a rotary working condition, and the modularized integrated vacuum high-temperature sintering forming device is characterized by further comprising: The experimental box body (3) is internally provided with one or more mutually independent axle center heating assemblies (1) in a parallel and integrated manner; each axis heating assembly (1) comprises a high-temperature-resistant vacuum sealing pipe (114) for constructing a vacuum sintering environment, the front end of the high-temperature-resistant vacuum sealing pipe (114) is provided with an end face sealing structure, and the rear end of the high-temperature-resistant vacuum sealing pipe is provided with an auxiliary plug handle (220) and is connected with an external power supply through a power supply plug connector (211); The sample heating unit (120) is arranged inside the high-temperature-resistant vacuum sealing tube (114) and is of a replaceable modularized structure, comprises a tubular silicon nitride heat transfer matrix (126) and a heating body (125) wound on the outer surface of the tubular silicon nitride heat transfer matrix (126), and is provided with a graphite crucible (130) for bearing a sample; The multi-layer heat insulation structure (110) is filled between the sample heating unit (120) and the high-temperature-resistant vacuum sealing tube (114), comprises a zirconia ceramic isolation tube (113) and nano aerogel heat insulation layers (112, 140) and is used for reducing heat escape and controlling the temperature rise of the outer surface of the box body.
2. The modularized integrated vacuum high-temperature sintering forming device adapting to the environment of multiple force fields, as set forth in claim 1, is characterized in that the surface temperature of the metal shell of the experiment box body (3) is maintained within a safe range of not higher than 60 ℃, power supply connectors (310) are distributed on one surface of the experiment box body (3), a plurality of groups of experiment box bodies (3) are correspondingly arranged at each sector-shaped installation position on the rotary acceleration disc assembly (4), and the modularized integrated vacuum high-temperature sintering forming device plays a role in high-temperature heating experiments of multiple force fields and is used for simulating microgravity of 0.01g to 1.5g in space and hypergravity of 1g to 10g on the ground.
3. The modular integrated vacuum high-temperature sintering forming device adapting to the environment of multiple force fields according to claim 1, wherein the tubular silicon nitride heat transfer matrix (126) is not limited to a tubular structure, the tubular silicon nitride heat transfer matrix (126) is arranged in a zirconia sleeve (124), the zirconia sleeve (124) is fixedly connected with one side of the heating sample seat (122), and a second nano aerogel heat insulation layer (140) is distributed around the tubular silicon nitride heat transfer matrix (126).
4. The modular integrated vacuum high-temperature sintering forming device adapting to the environment of multiple force fields according to claim 3, wherein the edge part of one side of the heating sample seat (122) is fixedly connected with the cover opening of the ceramic cover (123) through screws, and the middle part of the heating sample seat (122) and the middle part of the ceramic cover (123) are both in pore channel structures and are used for inserting the temperature sensing end part of the thermocouple (127) and exhausting air in a gap during vacuumizing.
5. The modularized integrated vacuum high-temperature sintering forming device adapting to the environment of multiple force fields, as set forth in claim 1, wherein the specific material of the high-temperature resistant vacuum sealing tube (114) is configured according to a target sintering temperature, and when the target sintering temperature is lower than 1200 ℃, the high-temperature resistant vacuum sealing tube (114) is a high-purity quartz tube, so that the inside observation can be performed by utilizing the light transmittance of the high-temperature resistant vacuum sealing tube; When the target sintering temperature is 1200-1600 ℃, the high-temperature-resistant vacuum sealing tube (114) is a high-purity corundum tube or zirconia ceramic tube, so that the structural strength and the air tightness in a high-temperature environment are ensured.
6. The modularized integrated vacuum high-temperature sintering forming device adapting to the environment of multiple force fields, as set forth in claim 5, characterized in that a first nano aerogel heat insulation layer (112) is filled between pipe walls in the multilayer heat insulation structure (110), the multilayer heat insulation structure (110) is specifically composed of a high-temperature-resistant vacuum sealing pipe (114), a zirconia ceramic insulating pipe (113) and a metal pipe (111) which are sequentially arranged from inside to outside, a front port of the high-temperature-resistant vacuum sealing pipe (114) is fixedly connected with an external flange structure part of a power supply plug connector (211) located in an external structure component (2) through an end face sealing structure through bolts, and the power supply plug connector (211) is electrically connected to a power supply plug seat (210).
7. The modular integrated vacuum high-temperature sintering forming device adapting to the environment of multiple force fields according to claim 6, wherein the zirconia ceramic isolation tube (113), the first nano aerogel heat insulation layer (112) and the second nano aerogel heat insulation layer (140) are used for reducing heat escape and controlling the temperature rise of the outer surface of the experimental box body (3) and ensuring that the temperature of a sample reaches 1600 ℃ in the vacuum high-temperature sintering environment.
8. The modular integrated vacuum high temperature sintering forming apparatus adapting to multiple force field environments according to claim 6, wherein the end face sealing structure is configured as a detachable structure, when a sample is replaced, only the end face sealing structure is required to be unloaded to plug in and out an internal sample heating unit (120), and the high temperature resistant vacuum sealing tube (114) is kept fixed, and the whole tube body is not required to be detached, so that the stability of a vacuum sealing system is ensured.
9. The modular integrated vacuum high-temperature sintering forming device adapting to the environment of multiple force fields, as set forth in claim 1, characterized in that the positive and negative ends of the heating element (125) are electrically connected with plug electrodes (121), the plug electrodes (121) are inserted and positioned with a power supply plug seat (210) through a matched loosening-preventing fastening mechanism (212), a thermocouple (127) is packaged in a zirconia ceramic piece positioned in the middle of the power supply plug seat (210), the temperature sensing end part of the thermocouple (127) is exposed and contacted with the outer wall of the graphite crucible (130), and the thermocouple (127) is provided with two thermocouples for realizing synchronous measurement of temperature so as to evaluate the temperature uniformity of a heating area and maintain redundant backup of temperature monitoring when a single thermocouple (127) is abnormal.
10. The modularized integrated vacuum high-temperature sintering forming device adapting to the environment of multiple force fields, as set forth in claim 9, wherein the heating element (125) is made of platinum-rhodium alloy wire or tungsten-molybdenum alloy material, and is used for combining with a thermocouple (127) to realize automatic temperature control, and the temperature value is controllable.

Description

Modularized integrated vacuum high-temperature sintering forming device adapting to multiple force field environments Technical Field The invention relates to the technical field of vacuum high-temperature sintering equipment, in particular to a modularized integrated vacuum high-temperature sintering forming device adapting to a multiple force field environment. Background With the leap of deep space exploration technology and the deep development of space material science, the research on melting, sintering and solidification rules of materials under different gravitational fields (such as moon 1/6g, mars 1/3g or ground hypergravity >1 g) is carried out by utilizing a space station-based gravity science experiment cabinet or a ground hypergravity centrifuge, and the research has become the current scientific front edge. Such experiments typically require the generation of a stable centrifugal force field relying on a rotating accelerating disc assembly to simulate the gravitational environment of a target. However, when high temperature vacuum experimental equipment is transplanted to such a gravity-varying platform, the dual challenges of severe "ground-air environmental differences" and "dynamic load adaptation" are faced. Firstly, the existing vacuum tube furnace technology is mainly designed for a ground static laboratory, and the problems of huge volume, large thermal inertia and dependence on kilowatt-level high-power supply generally exist. Although the ground environment energy is relatively sufficient, the high-energy consumption equipment is usually required to be provided with a complex water-cooling circulation system to maintain the low temperature of the outer wall, and the weight burden of a rotating arm is obviously increased if the equipment is directly applied to a rotary centrifuge platform, and in a space station scene, the platform provides a very strict 'admission threshold' for the load, the single-path power consumption is usually required to be strictly controlled within 200W, and the temperature of the outer surface of the equipment is required to be maintained below 60 ℃ so as to ensure the safety of astronauts. In addition, unlike conventional stationary experiments, variable gravity experimental devices are subjected to a continuous centrifugal overload and vibration environment for a long period of time when rotating at high speed with a turntable. The electrical connection and the mechanical fastener of the traditional high-temperature furnace are very easy to generate poor contact or loose structure under the dynamic working condition. Especially, for space station application scenes, when sample replacement or equipment maintenance is carried out in a microgravity environment, if a fastening structure lacks a special anti-drop design, tiny parts such as detached screws and the like are easy to float, and the running stability of equipment in a cabin and the personal safety of astronauts are seriously threatened. Furthermore, the existing high-temperature experimental equipment is limited by material characteristics, and it is difficult to simultaneously meet the requirements of transparent observation (low temperature) and ultra-high temperature sintering (above 1600 ℃) in a single structure. The traditional sealing tube is easy to soften and deform at the temperature of more than 1200 ℃, and the research of high-melting-point materials is limited. In view of the foregoing, there is a great need to develop a modularized vacuum high-temperature sintering device that is efficient in heat insulation, low in power consumption, easy in maintenance of end face seal, resistant to centrifugation and floatation, and capable of meeting the requirements of wide temperature ranges from 1100 ℃ to 1600 ℃. Disclosure of Invention The invention aims to solve the problems and provide a modularized integrated vacuum high-temperature sintering forming device adapting to a multi-force field environment. The invention realizes the above purpose through the following technical scheme: The modularized integrated vacuum high-temperature sintering forming device suitable for the environment of multiple force fields comprises an experimental box body, wherein the outer shell of the experimental box body is made of metal, and the surface of the experimental box body is provided with a power supply socket and a vacuumizing interface; The experimental box comprises an experimental box body, an axle center heating assembly, one or more mutually independent axle center heating assemblies, a power supply connector and a power supply connector, wherein the axle center heating assembly is integrated in the experimental box body as a core unit; The sample heating unit is arranged in the high-temperature-resistant vacuum sealed tube body of the axis heating assembly and is of a replaceable modularized structure, and comprises a tubular silicon nitride heat transfer matrix and a heating body wound on the oute