Thermal protection material environment simulation test equipment and test method

Abstract

The invention relates to the related field of thermal protection material environment simulation testing, in particular to thermal protection material environment simulation testing equipment and a testing method, and the thermal protection material environment simulation testing equipment comprises a sample loading table, a mixed pressurizing mechanism, a sample loading bin and a load loading mechanism. A sample is arranged in the sample loading bin, multidirectional static and dynamic load loading is realized by adopting a force application part of the loading mechanism through a loading rod, a mixed pressurization mechanism is combined to regulate and control a gas proportion to simulate a complex gas environment, a heating and temperature measuring part is arranged in the heating box, and the test temperature is accurately controlled through a control part. Precise load control is ensured by a pressure sensor between the pressurizing rod and an end plate, vertical and horizontal loading is realized by a Z-direction hydraulic mechanism and an X-direction hydraulic mechanism respectively, high temperature influence is avoided by the pressurizing rod made of a high-temperature-resistant ceramic material, the position of a vertical and horizontal moving counter-force bracket supported by a frame can be adjusted, and loading precision is ensured. According to the equipment, synchronous and accurate simulation of multidirectional load loading, complex gas environment simulation and temperature control is realized.

Description

Technical Field

[0001] This invention relates to the field of environmental simulation testing of thermal protection materials, and in particular to an environmental simulation testing device and method for thermal protection materials. Background Technology

[0002] With the rapid development of cutting-edge technologies in aerospace, hypersonic vehicles, and other fields, aircraft face extremely harsh service environments during their service. Their thermal protection systems not only need to withstand high-temperature aerodynamic loads of thousands of degrees Celsius, but also need to resist complex structural loads, aerodynamic shear forces, mechanical vibrations, and even chemical and physical processes such as oxidation and ablation caused by high temperatures. These extreme conditions of multi-field coupling of thermo-mechanical-chemical fields pose unprecedented challenges to the performance of thermal protection materials. The failure behavior of materials is not a simple superposition of the effects of a single physical field, but a complex result of nonlinear interaction and mutual coupling between multiple fields. Therefore, accurately reproducing and systematically studying this multi-field coupling effect in a ground-based laboratory environment is of vital importance for a deep understanding of the failure mechanism of materials in real-world environments, accurate assessment of their service performance, and accelerating the development of next-generation high-performance thermal protection materials.

[0003] Currently, testing methods for thermal protection materials both domestically and internationally tend to focus on single or dual-field environment simulation, such as individual thermal shock tests, mechanical property tests, or static oxidation tests. However, these traditional methods are difficult to reveal the evolution of material properties and synergistic failure mechanisms under the coupling of multiple thermal, mechanical, and chemical fields, resulting in a significant gap between ground test data and the actual service performance of materials.

[0004] To fill the research gaps mentioned above, it is necessary to develop an environmental simulation test device and test method for thermal protection materials. This device aims to integrate multiple subsystems such as high-temperature heating, multiaxial mechanical loading, and controllable atmosphere environment, thereby constructing a highly controllable and reproducible "virtual extreme environment" on a laboratory scale. Summary of the Invention

[0005] Therefore, the present invention provides an environmental simulation test device and test method for thermal protection materials to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides an environmental simulation test device for thermal protection materials, including a frame, a heating furnace chamber, a sample loading platform, a mixing and pressurizing mechanism, a sample loading chamber and a load loading mechanism; The frame is hollow inside; The heating furnace chamber is sealed inside. An air inlet is provided at the rear of the heating furnace chamber, and an air outlet is provided at the top. Loading ports are provided at the top and rear of the heating furnace chamber, and a loading rod is built into the loading port. The sample loading stage is divided into upper and lower layers, and both the upper and lower sample loading stages have built-in grooves. The upper sample loading stage has holes inside. The sample loading chamber contains the sample and is placed inside the sample loading stage. The sample inside the sample loading chamber is separated by vertical baffles and horizontal baffles. The load loading mechanism is located outside the heating furnace chamber and is supported by a frame. The force-applying components act on the sample loading chamber in the X and Z directions through loading rods, and the loading rods extend into the rear and upper parts of the heating furnace chamber and act on the sample loading chamber. The mixing and pressurizing mechanism is located outside the heating furnace chamber, and the mixing and pressurizing mechanism is connected to the rear air inlet of the heating furnace chamber; The force-applying components, heating components, and mixing pressurization mechanism are each individually connected to their respective control components; The loading rod is divided into a first loading rod and a second loading rod. The loading rod is made of high-temperature resistant ceramic material, and a pressure sensor is installed between the loading rod and the end plate. As described above, the test equipment has a sample loading chamber containing a sample. The force-applying component of the load loading mechanism applies load to the sample loading chamber in all directions through the loading rod. The mixing and pressurizing mechanism can enter the sample loading chamber through the air inlet at the rear of the heating furnace chamber, thereby simulating a complex gas environment and conducting relevant tests. Furthermore, the heating furnace chamber has a built-in heating component, and the temperature of the heating component is controlled by the control component, thereby controlling the temperature during the test.

[0007] Preferably, the mixing and pressurizing mechanism is a pressure-type proportional mixing mechanism, and the mixing and pressurizing mechanism is provided with a gas source chamber and multiple gas injection pipes. The multiple gas injection pipes are fixed together by snap-fit. Each gas injection pipe is equipped with a switch, a flow meter and a pressure gauge. The gas source chamber is provided with gas sources for each component. The injected gas components are controlled by the switch, flow meter and pressure gauge on the gas injection pipe.

[0008] Preferably, the heating components of the heating furnace chamber are located on the left and right sides for heating the sample loading stage and the sample loading chamber.

[0009] Preferably, the force-applying component is a hydraulic system, and multiple hydraulic systems act on the X and Z directions of the sample loading chamber.

[0010] Preferably, the hydraulic mechanism located in the Z direction consists of a Z-direction pressurizing mechanism and a first pressurizing rod. The Z-direction pressurizing mechanism is located above the sample loading chamber, and the first pressurizing rod passes through the upper part of the heating furnace chamber. The Z-direction hydraulic mechanism also includes a first end plate, which is fixedly connected to the first pressurizing rod. The end of the first pressurizing rod away from the first end plate passes through the sample loading chamber hole and contacts the sample loading stage.

[0011] Preferably, the hydraulic mechanisms located in the X direction are an X-direction pressurizing mechanism and a second pressurizing rod. The X-direction pressurizing mechanism is located on the side of the sample loading chamber, and the second pressurizing rod passes through the side of the heating furnace chamber. At the same time, the X-direction hydraulic mechanism includes a second end plate, which is fixedly connected to the second pressurizing rod, and the end of the second pressurizing rod away from the second end plate passes through the groove of the sample loading chamber and contacts the sample loading stage.

[0012] Preferably, pressure sensors are provided between the first pressure rod and the first end plate, and between the second pressure rod and the second end plate. When the shape of the sample changes, the pressure can be increased by adjusting the hydraulic system in the X and Z directions through the sensors to compensate for the pressure drop caused by the reduction in sample volume.

[0013] Preferably, the sample loading platform is composed of two pieces, upper and lower. The upper part of the sample loading platform is perforated, and the perforation position is aligned with the loading hole in the upper part of the heating furnace chamber. Grooves are provided on the upper and lower sides and the lower and upper sides of the sample loading platform, and the grooves of the upper and lower sample loading platforms are aligned with the holes in the rear part of the heating furnace chamber.

[0014] Preferably, the sample loading chamber is built inside the groove of the sample loading stage, the sample is placed inside the sample loading chamber, and the samples are separated by ceramic gaskets.

[0015] Preferably, the frame supports a vertically movable reaction support, which can move vertically relative to the frame, and a horizontally movable reaction support can move horizontally relative to the frame. One end of the force-applying component in the horizontal direction abuts against the vertically movable reaction support, and one end of the force-applying component in the vertical direction abuts against the horizontally movable reaction support.

[0016] Secondly, the present invention also provides a test method for an environmental simulation test device for thermal protection materials, comprising the following steps: S1. Prepare the sample; S2. Adjust the force-applying component so that it contacts the loading rod in the corresponding direction. The loading rod is located on the outer and upper sides of the sample loading chamber. S3. Introduce the prepared gas mixture into the mixing and pressurizing mechanism; S4. The mixed gas enters the sample loading chamber through the air inlet; S5. The control unit controls the opening or closing of the heating furnace chamber, so that the temperature inside the sample loading chamber reaches the set value. S6. The horizontal force-applying component in the load loading mechanism begins to load, and the vertical force-applying component begins to load, increasing the pressure until the requirement is met. S7. After the temperature inside the heating furnace chamber recovers, the gas is discharged through the exhaust hole at the top of the heating furnace chamber. After the gas is discharged, the axial pressure is unloaded first, and the sample loading chamber is opened to take out the sample while the horizontal pressure is unloaded.

[0017] The beneficial effects of this invention are: 1. This invention achieves real-time static and dynamic load loading through the Z-axis and X-axis hydraulic systems within the sample loading chamber. Combined with the gas ratio regulation of the hybrid pressurization mechanism and the synergistic effect of the heating furnace chamber, it can accurately simulate complex gas environments. Meanwhile, the pressure rod is made of high-temperature resistant ceramic material to ensure the stability of load transmission under high-temperature conditions. The reaction support frame enables vertical and horizontal movement adjustment, allowing the loading mechanism to be precisely aligned with the sample loading chamber, significantly improving the loading accuracy and reliability of multi-field coupling experiments.

[0018] 2. This invention integrates heating and temperature measurement components within the heating chamber, thereby achieving high-precision closed-loop control of the test temperature through the control components. In particular, the use of high-temperature resistant ceramic materials not only solves the deformation problem of traditional metal materials at high temperatures, but also ensures the long-term stability of the pressurization system under extreme temperature environments, enabling the equipment to cover a wider temperature range and providing test conditions closer to real working conditions for the performance evaluation of thermal protection materials.

[0019] 3. This invention achieves synchronous simulation of the three elements of "load-environment-temperature" through the organic integration of the sample loading chamber, temperature control module and multi-directional pressurization mechanism. Its modular design simplifies the equipment adjustment process and shortens the experimental preparation time. In addition, the real-time data acquisition and feedback mechanism ensures the dynamic controllability of experimental parameters. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a front view of the heating furnace chamber of the present invention; Figure 3 This is a right-side plan view of the heating furnace chamber of the present invention; Figure 4 This is a schematic diagram of the internal heating box structure of the present invention; Figure 5 This is a schematic diagram of the upper part of the sample loading stage of the present invention; Figure 6 This is a schematic diagram of the sample loading stage (lower part) structure of the present invention; Figure 7 This is a schematic diagram of the sample loading chamber structure of the present invention; Figure 8 This is a schematic diagram of the end plate and pressure sensor structure of the present invention; Figure 9 This is a schematic diagram of the gas injection tube and snap-fit ​​structure of the present invention.

[0021] The components include: horizontal moving reaction support-1, frame-2, Z-direction pressurizing mechanism-3, first end plate-4, first pressurizing rod-5, heating furnace chamber-6, internal heating box-7, sample loading platform-8, gas outlet pipe-9, vertical moving reaction support-10, X-direction pressurizing mechanism-11, second end plate-12, gas injection pipe-13, second pressurizing rod-14, mixing pressurizing mechanism-15, sample loading chamber-16, cooling pipe-17, heating wire-18, vertical baffle-19, horizontal baffle-20, pressure sensor-21, and buckle-22. Detailed Implementation

[0022] To further explain the technical solution of the present invention, a detailed description is provided below through specific embodiments. Example 1

[0023] refer to Figure 1 As shown, an environmental simulation test device for thermal protection materials; It needs to be explained that the methods by which the control components control the temperature include: The temperature sensor detects the temperature of the sample loading chamber 16. If the detected temperature does not reach the high temperature state, the control component controls the heating wire 18 to heat and injects air into the cooling pipe 17 until the temperature sensor detects that the temperature of the sample loading chamber 16 is high. When the temperature of the sample loading chamber 16 reaches the high temperature state, the test begins. refer to Figure 4 As shown, multiple S-shaped pipes are connected in sequence between the heating furnace chamber 6 and the heating box 7 inside the chamber. These multiple S-shaped pipes form a cooling pipe 17 to allow the flow of coolant or cooling gas. The arrangement of the S-shaped pipes helps to ensure the amount of coolant or gas flowing into the heating box 7 inside the chamber. The heating element is specifically a heating wire 18, which is arranged on both sides of the straight pipe in the S-shaped pipe to ensure the area where the heating element is installed. The coolant or cooling gas is introduced into the S-shaped pipe to cool down the heating furnace chamber 6, and the heating element is used to heat up the heating furnace chamber 6.

[0024] The experimental setup includes: Frame 2 with an internal hollow structure; The sample is placed in the sample loading chamber 16 and is placed in the sample loading stage 8. The sample in the sample loading chamber 16 is separated by a vertical baffle 19 and a horizontal baffle 20. It should be noted that the force-applying component is a hydraulic system, with multiple hydraulic systems acting in the X and Z directions of the specimen loading chamber 16 to achieve multiaxial testing, enabling the application of constant stress to the specimen in multiple directions.

[0025] Specifically, the hydraulic mechanisms located in the Z direction are the Z-direction pressurizing mechanism 3 and the first pressurizing rod 5. The Z-direction pressurizing mechanism is located above the sample loading chamber 16, and the first pressurizing rod 5 passes through the upper part of the heating furnace chamber 6. refer to Figure 1 As shown, the Z-axis hydraulic mechanism also includes a first end plate 4, which is fixedly connected to a first pressure rod 5. The end of the first pressure rod 5 away from the first end plate 4 passes through the hole of the sample loading chamber 16 and acts on the sample inside the sample loading stage 8.

[0026] refer to Figure 1 As shown, the X-axis hydraulic mechanism also includes a second end plate 12, which is fixedly connected to a second pressure rod 14. The end of the second pressure rod 14 away from the second end plate 12 passes through the groove of the sample loading chamber 16 and acts on the sample inside the sample loading stage 8.

[0027] refer to Figure 8 As shown, a pressure sensor 21 is installed between the end plate and the pressure rod. During the loading process, when the shape of the sample changes, the pressure can be increased by adjusting the hydraulic system in the X and Z directions through the sensor to compensate for the pressure drop caused by the shrinkage of the sample volume.

[0028] Specifically, frame 2 has a set height, width, and length. The side of frame 2 is hollowed out. The rear side of frame 2 is connected to vertical moving reaction support 10. Thus, the rear side of frame 2 and vertical moving reaction support 10 provide reaction force for X-direction pressing mechanism 11. The upper side of frame 2 is connected to horizontal moving reaction support 1. Thus, the upper side of frame 2 and horizontal moving reaction support 1 provide reaction force for Z-direction pressing mechanism 3. In general, frame 2 has four vertical sides, and vertical slides are set at both ends of the two rear sides. Vertical moving reaction support 10 can move up and down along the vertical slides. The upper side has four sides, and slides are set at the upper part of the left and right sides. Horizontal moving reaction support 1 can move horizontally along the horizontal slides. The two types of movement can ensure that the pressing mechanism and the pressing rod are aligned.

[0029] The sample loading chamber 16 is a hollow cube, and the sample is placed inside the sample loading chamber 16. Specifically, each loading plate, gas injection pipe 13, heating furnace chamber 6, sample loading stage 8, and sample loading chamber 16 are made of high-temperature resistant ceramic materials such as SiC ceramics and ZrB2 ceramics; in other examples, other high-temperature resistant and corrosion-resistant materials can also be used.

[0030] The mixing and pressurizing mechanism 15 is located inside the frame 2. The mixing and pressurizing mechanism 15 is a pressure-type proportional mixing mechanism, which is equipped with a gas source chamber and multiple gas injection pipes 13. The multiple gas injection pipes 13 are fixed together by buckles 22. The gas composition in the gas source chamber is controlled by the switch, flow meter and pressure gauge on the gas injection pipe 13. The mixed gas enters the heating furnace chamber 6 through the gas injection pipe 13 and is discharged through the gas outlet pipe 9. Specifically, the mixing and pressurizing mechanism 15 is a pressure-type proportional mixing mechanism. The mixing and pressurizing mechanism is equipped with a gas injection pipe 13, and each gas injection pipe 13 is equipped with a switch, a flow meter, and a pressure gauge.

[0031] This invention proposes an environmental simulation test device for thermal protection materials. A sample is placed in the sample loading chamber 16. The force-applying component of the load loading mechanism applies load to the sample loading chamber 16 in multiple directions through the loading rod. The mixing and pressurizing mechanism 15 can mix one or more gas components in proportion and introduce them into the sample loading chamber 16 through the air inlet at the rear of the heating furnace chamber 6, thereby simulating the environment of complex gases. Heating and temperature measuring components are set inside the heating furnace chamber 6, and the temperature of the sample is controlled by the control component. Example 2

[0032] A test method for an environmental simulation test device for thermal protection materials includes the following: Step 1: Process the sample According to the test requirements, the shape and size of the sample are processed, and the preferred sample size is a cube of 20 mm × 20 mm × 14 mm.

[0033] Step 2: Place the sample and seal the sample loading chamber 16. refer to Figure 7 As shown, considering that when multiple samples are loaded in multiple directions in the sample loading chamber 16, a splicing seam will be generated between adjacent samples. In order to seal the splicing seam, a baffle that matches the shape of the cubic sample is installed on the cubic sample prepared in step one. The upper and lower samples are separated by a horizontal baffle 20, and the samples are separated in the horizontal direction by a vertical baffle 19. After the baffle is installed, the sample is placed in the sample loading chamber 16. By adjusting the horizontal moving reaction force support 1 and the vertical moving reaction force support 10, the Z-direction pressing mechanism 3 is aligned with the first end plate 4, and the X-direction pressing mechanism 11 is aligned with the second end plate 12. The load loading mechanism is adjusted so that the load is applied to the sample end face through the second pressing rod 14 in the X direction and the first pressing rod 5 in the Z direction, thus sealing the sample loading chamber.

[0034] Step 3: Initial equilibrium of forces on the sample By using the load loading mechanism, the load is set to the minimum value, and each pressurization mechanism is controlled to apply the load to the specimen, so that the specimen reaches a preliminary equilibrium state of force.

[0035] Step 4, Gas Environment Simulation One or more required gas sources are assembled into the mixing and pressurizing mechanism 15, and the mixed gas ratio is configured as needed. The mixed gas is injected into the heating furnace chamber 6 through the gas injection pipe 13 according to the setting, so that the sample is in the set gas environment.

[0036] Step 5: Adjust the test temperature environment The control unit controls the heating wire 18 to increase the temperature, and the temperature of the sample loading chamber 16 is fed back to the control unit in real time through the temperature sensor in the heating furnace chamber 6. The test temperature is adjusted to maintain the set value during the test, and the working status of the hydraulic rods in all directions is monitored to keep the temperature of the hydraulic rods within the normal working temperature range.

[0037] Step Six: Multi-directional Loading Test Loading begins. The load loading mechanism first applies a horizontal stress σ1 in the Z direction to the sample through the Z-direction pressurization mechanism 3, and then controls the X-direction pressurization mechanism 11 to apply an initial axial pressure σ2 to the sample. During the experiment, the pressure sensor 21 is observed. By adjusting the load loading mechanism, the multi-directional pressure on the sample is continuously increased as the sample volume changes, and is maintained within the set range.

[0038] Step 7: Unload and remove the sample. After stopping heating and waiting for the temperature of the heating furnace chamber 6 to drop to room temperature, close the mixing and pressurizing mechanism 15, open the gas outlet pipe 9 to discharge the gas in the heating furnace chamber 6, adjust the load loading mechanism, first remove the Z-direction pressurizing mechanism 3, then unload the X-direction pressurizing mechanism 11, open the upper part of the sample loading platform 8, remove the sample loading chamber 16, unload the vertical baffle 19 and the horizontal baffle 20, remove the sample, and end the test.

[0039] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An environmental simulation testing device for thermal protection materials, characterized in that: It includes a frame (2), a heating furnace chamber (6), a sample loading platform (8), a mixing and pressurizing mechanism (15), a sample loading chamber (16), and a load loading mechanism; The frame (2) is hollow inside; The heating furnace chamber (6) is sealed inside. An air inlet is provided at the rear of the heating furnace chamber (6), and an air outlet is provided at the top. Loading ports are provided at the top and rear of the heating furnace chamber (6), and a loading rod is built into the loading port. The sample loading stage (8) is divided into upper and lower layers, and both the upper and lower sample loading stages (8) have built-in grooves. The upper sample loading stage (8) has holes inside. The sample loading chamber (16) contains the sample and is placed inside the sample loading stage (8). The sample inside the sample loading chamber (16) is separated by a vertical baffle (19) and a horizontal baffle (20). The load loading mechanism is located outside the heating furnace chamber (6) and is supported by the frame (2). The force-applying components act on the sample loading chamber (16) in the X and Z directions through the loading rods. The loading rods extend into the rear and upper parts of the heating furnace chamber (6) and act on the sample loading chamber (16). The mixing and pressurizing mechanism (15) is located outside the heating furnace chamber (6), and the mixing and pressurizing mechanism (15) is connected to the rear air inlet of the heating furnace chamber (6).

2. The environmental simulation test equipment for thermal protection materials according to claim 1, characterized in that: The mixing and pressurizing mechanism (15) is equipped with a gas source chamber and a gas injection pipe (13), and the gas injection pipe is externally connected to a buckle (22).

3. The environmental simulation test equipment for thermal protection materials according to claim 1, characterized in that: The heating surfaces of the heating furnace chamber (6) are located on its left and right sides.

4. The environmental simulation test equipment for thermal protection materials according to claim 1, characterized in that: The force-applying component is a hydraulic system, which acts on the X and Z directions of the sample loading chamber (16).

5. The environmental simulation test equipment for thermal protection materials according to claim 1, characterized in that: The hydraulic systems located in the X and Z directions are respectively connected to the loading rods. The X-direction loading rod passes through the rear of the heating furnace chamber (6) and acts on the sample loading chamber (16). The Z-direction loading rod passes through the upper part of the heating furnace chamber (6) and passes through the upper hole of the sample loading platform (8) and acts on the sample loading chamber (16). The hydraulic mechanisms located in the Z direction are a Z-direction pressurizing mechanism (3) and a first pressurizing rod (5). The Z-direction pressurizing mechanism (3) is located above the sample loading chamber (16). The first pressurizing rod (5) passes through the upper part of the heating furnace chamber (6). The Z-direction hydraulic mechanism also includes a first end plate (4). The first end plate (4) is fixedly connected to the first pressurizing rod (5). The end of the first pressurizing rod (5) away from the first end plate (4) passes through the hole of the sample loading chamber (16) and contacts the sample loading stage (8). The hydraulic mechanisms located in the X direction are an X-direction pressurizing mechanism (11) and a second pressurizing rod (14). The X-direction pressurizing mechanism (11) is located on the side of the sample loading chamber (16), and the second pressurizing rod (14) passes through the side of the heating furnace chamber (6). The X-direction hydraulic mechanism includes a second end plate (12), which is fixedly connected to the second pressurizing rod (14). The end of the second pressurizing rod (14) away from the second end plate (12) passes through the groove of the sample loading chamber (16) and contacts the sample loading stage (8).

6. The environmental simulation test equipment for thermal protection materials according to claim 1, characterized in that: Pressure sensors (21) are provided between the first pressure rod (5) and the first end plate (4) and between the second pressure rod (14) and the second end plate (12).

7. The environmental simulation test equipment for thermal protection materials according to claim 1, characterized in that: The sample loading platform (8) is composed of two pieces, upper and lower. The upper sample loading platform (8) has a hole drilled in the upper part, and the hole position is aligned with the loading hole in the upper part of the heating furnace chamber (6). The upper lower side and the lower upper side of the sample loading platform (8) are provided with grooves, and the grooves of the upper and lower sample loading platforms (8) are aligned with the holes in the rear part of the heating furnace chamber (6).

8. The environmental simulation test equipment for thermal protection materials according to claim 1, characterized in that: The sample loading chamber (16) is built into the groove of the sample loading stage (8), and the upper part of the sample loading chamber (16) is directly opposite the Z-direction loading rod.

9. A test method for an environmental simulation test apparatus for thermal protection materials, wherein the environmental simulation test apparatus for thermal protection materials according to any one of claims 1-8 is characterized in that, Includes the following steps: S1. Prepare the sample; S2. Adjust the force-applying component so that it contacts the loading rod in the corresponding direction. The loading rod is located on the outer and upper sides of the sample loading chamber (16). S3. Introduce the prepared gas into the mixing and pressurizing mechanism (15); S4. The mixed gas enters the sample loading chamber (16) through the air inlet. S5. The control unit controls the opening or closing of the heating furnace chamber (6) so that the temperature inside the sample loading chamber (16) reaches the set value. S6. The horizontal force-applying component in the load loading mechanism begins to load, and the vertical force-applying component begins to load, increasing the pressure until the requirement is met. S7. After the internal temperature of the furnace chamber (6) is restored, the gas is discharged through the gas outlet pipe (9) at the top of the furnace chamber (6). After the gas is discharged, the axial pressure is unloaded first. When the horizontal pressure is unloaded, the sample loading chamber (16) is opened to take out the sample.

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