A high-throughput heat treatment experimental device for high-temperature alloys

Abstract

The present application discloses a high-temperature alloy high-throughput heat treatment experimental device, including a shell and an infrared heating rod installed at the center of the shell, a plurality of lower rotating disks evenly distributed around the circumference of the infrared heating rod are rotatably installed in the shell, and a quartz tube is installed at the rotation center of each lower rotating disk; a refractory fiber block is installed on the lower rotating disk, and an elliptical gold-surface reflector is inlaid on the elliptical surface of the refractory fiber block, and the quartz tube is located at the focus of the elliptical gold-surface reflector, and receives the infrared rays directly from the infrared heating rod and reflected by the elliptical gold-surface reflector to heat the sample in the quartz tube; each quartz tube is individually connected to a cooling system for cooling the sample in the quartz tube. The present application is provided with a plurality of heat treatment stations, and the process parameters of the heat treatment of each station can be adjusted according to the needs to realize high-throughput sample preparation, which provides the possibility for rapid realization of orthogonal experiments and gradient experiments.

Description

Technical Field

[0001] The present application relates to the technical field of high-temperature alloy heating furnaces, and in particular to a high-temperature alloy high-throughput heat treatment experimental device. Background Art

[0002] High-temperature alloys refer to a type of metal material based on iron, nickel and cobalt that can work for a long time at high temperatures above 600°C and under certain stresses; they have high high-temperature strength, good oxidation and corrosion resistance, good fatigue performance, fracture toughness and other comprehensive properties. High-temperature alloys are single austenite structures with good organizational stability and reliability at various temperatures.

[0003] The heat treatment temperature of high-temperature alloys is high, the time is long, the heat treatment process is complicated, and in order to ensure the surface quality, the heat treatment experiments of high-temperature alloys generally need to be carried out in a vacuum environment of a tubular furnace. These factors limit the development of new heat treatment processes for high-temperature alloys and result in a long heat treatment process development process.

[0004] The existing high-temperature alloy experimental tube furnace is designed with a single quartz tube. If multiple samples need to be tested at the same time, they need to be stacked or placed side by side in a quartz tube. Due to the limited uniform temperature zone of the tube furnace and the placement of the samples, multiple samples cannot be processed at the same time. In addition, due to uniformity issues, there are certain temperature differences during heat treatment of each sample.

[0005] At the same time, due to the complexity of the heat treatment process of high-temperature alloys, the optimization of the heat treatment process of high-temperature alloys requires research on the effects of heating rate, cooling rate, solution temperature and time, aging temperature and time, vacuum degree, etc. on the service performance of high-temperature alloys. In addition, the heat treatment time of high-temperature alloys is relatively long, and the use of tubular furnaces can only process samples with the same process, and high-throughput experiments with different processes cannot be carried out, which also prolongs the development cycle of heat treatment of high-temperature alloys.

[0006] In the prior art, there are few reports on heat treatment experimental equipment dedicated to high-temperature alloys, and the working stations of the heating equipment are also very limited, which cannot truly meet the needs of heat treatment samples of high-temperature alloys. Summary of the invention

[0007] Based on the above deficiencies in the prior art, the technical problem to be solved by the present application is to provide a high-throughput heat treatment experimental device for high-temperature alloys, which is equipped with multiple heat treatment stations and can adjust the process parameters of the heat treatment at each station according to needs to achieve high-throughput sample preparation, thereby providing the possibility for rapid implementation of orthogonal experiments and gradient experiments.

[0008] The present application provides a high-temperature alloy high-throughput heat treatment experimental device, comprising a shell and an infrared heating rod installed at the center of the shell, a plurality of lower rotating disks evenly distributed around the circumference of the infrared heating rod are rotatably installed in the shell, and a quartz tube is installed at the rotation center of each lower rotating disk; a refractory fiber block is installed on the lower rotating disk, and an elliptical gold-surface reflector is inlaid on the elliptical surface of the refractory fiber block; the quartz tube is located at the focus of the elliptical gold-surface reflector and receives infrared rays directly from the infrared heating rod and reflected by the elliptical gold-surface reflector to heat the sample in the quartz tube; each quartz tube is individually connected to a cooling system for cooling the sample in the quartz tube.

[0009] Furthermore, the cooling system includes an air inlet connected to the lower end surface of the quartz tube and an exhaust port connected to the upper end surface of the quartz tube; the air inlet and exhaust port are respectively equipped with an air inlet solenoid valve and an exhaust solenoid valve for controlling the flow rate of the cooling gas entering and exhausting the quartz tube.

[0010] Furthermore, a cover is provided above the shell and moves up and down by a lifting column, and an upper rotating disk is provided on the cover and corresponds to the lower rotating disk one by one and rotates synchronously with the lower rotating disk, and an upper supporting sealing ring for fixing and sealing the upper end surface of the quartz tube is provided at the rotation center position of each upper rotating disk; the exhaust port is installed at a position on the upper rotating disk corresponding to the upper end surface of the quartz tube.

[0011] Furthermore, each lower rotating disk is provided with a lower supporting sealing ring for fixing and sealing the lower end surface of the quartz tube; the air inlet is installed at a position on the lower rotating disk corresponding to the lower end surface of the quartz tube.

[0012] Optionally, the outer shell is provided with observation windows corresponding to the refractory fiber blocks one by one, and the observation windows are opened and closed by an observation baffle; in the cooling stage, the lower rotating disk rotates so that the elliptical gold-surface reflector is facing the observation window to block the heat radiation from the sample in the quartz tube.

[0013] Furthermore, a thermocouple for measuring the temperature of the sample is provided in the quartz tube.

[0014] Optionally, the number of the lower rotating disks is 6, and the refractory fiber blocks, elliptical gold-surface reflective covers, and quartz tubes are arranged in a regular hexagon.

[0015] Optionally, the outer shell is circular and fixed on the base, and the lower rotating disk is rotatably connected to the base.

[0016] From the above, the high-temperature alloy high-throughput heat treatment experimental device of the present invention has at least the following beneficial effects:

[0017] 1. The six elliptical reflectors are arranged in a regular hexagon, and the infrared emitting device is set at the common focus of the six elliptical reflectors. The quartz tube where the sample is placed is located at the focus of each elliptical gold-surface reflector, ensuring that the quartz tube can receive infrared rays directly irradiated and reflected by the elliptical surface, thereby heating the sample in the tube. The elliptical surface adopts a circumferentially uniformly distributed design with high thermal efficiency. When the focus of the elliptical gold-surface reflector is directly opposite to the central infrared emitting device, it can ensure that the six stations receive the same infrared intensity, ensuring that each station has the same heating conditions.

[0018] 2. The elliptical reflection device is rotatable. The elliptical gold-surface reflector is embedded in the refractory fiber block. By calculating and adjusting the rotation angle, the sample heating rate, insulation temperature and time can be controlled. The heat treatment process of samples at different stations can be controlled separately without affecting the processes at other stations.

[0019] 3. The quartz tube of each sample is equipped with an air inlet and an exhaust port. The inlet and outlet gas flow is controlled by the solenoid valve. The cooling rate, vacuum degree and other conditions of each sample can be controlled separately without affecting the process of other stations.

[0020] 4. It can process multiple samples at the same time. The elliptical gold reflector can improve the infrared reflectivity and heating efficiency, and the temperature uniformity is good.

[0021] 5. It can carry out multiple groups of heat treatment experiments with different processes at one time, with the characteristics of large one-time experimental volume and high thermal efficiency, and it also has the advantages of small footprint, simple operation, high efficiency, and easy control of parameter variables.

[0022] 6. The high-temperature alloy high-throughput heat treatment experimental device of the present application does not control the power of the heating rod, but adjusts the heating and insulation process of the sample by the rotation angle of the reflection module, which is more flexible and controllable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of the high-temperature alloy high-throughput heat treatment experimental device provided in this application;

[0024] Figure 2 This is a heating principle diagram of the high-temperature alloy high-throughput heat treatment experimental device of the present application.

[0025] Figure numerals: 1-lifting column; 2-elliptical gold reflector; 3-refractory fiber block; 4-infrared heating rod; 5-cover; 6-exhaust port; 7-upper supporting sealing ring; 8-quartz tube; 9-observation window; 10-observation baffle; 11-lower rotating disk; 12-air inlet; 13-lower supporting sealing ring; 14-housing; 15-base; 16-upper rotating disk. DETAILED DESCRIPTION

[0026] The present application is further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0027] The high-temperature alloy high-throughput heat treatment experimental device of the present application includes a base 15, a shell 14 located on the base 15, and an infrared heating rod 4 installed on the base 15 and placed at the center of the shell 14. Six lower rotating disks 11 are rotatably installed on the base 15. The six lower rotating disks 11 are evenly arranged around the circumference of the infrared heating rod 4 and are distributed in a regular hexagon. A refractory fiber block 3 is installed on each lower rotating disk 11. An elliptical gold-surface reflector 2 is installed on the elliptical surface of the refractory fiber block 3. A quartz tube 8 is arranged on the lower rotating disk 11 near the focus of the refractory fiber block 3. Each lower rotating disk 11 can rotate to make the elliptical gold-surface reflector 2 face the infrared heating rod 4 so that the quartz tube 8 is in a heating position. The quartz tube 8 receives infrared rays directly irradiated by the infrared heating rod 4 and reflected by the elliptical gold-surface reflector 2 to heat the sample in the quartz tube 8. The present application adopts a circumferentially uniformly distributed design, which can ensure that the six heating positions receive the same infrared intensity, ensure that each position has the same heating conditions, and have high thermal efficiency.

[0028] The lower end surface of the quartz tube 8 is fixed by the lower support seal ring 13 located on the lower rotating disk 11. A thermocouple for measuring the temperature of the sample is arranged inside the quartz tube 8, so that the temperature of the experimental sample can be monitored in real time. In addition, the lower end surface of the quartz tube 8 is connected to the air inlet 12 installed on the lower rotating disk 11, and the air inlet 12 is installed with an air inlet solenoid valve (not shown in the figure).

[0029] A cover 5 is provided above the housing 14. The lifting height and rotation angle of the cover 5 are controlled by the lifting column 1. The cover 5 is provided with six groups of exhaust ports 6 distributed in a regular hexagon and corresponding to the positions of the quartz tubes 8, exhaust solenoid valves (not shown in the figure), upper support seals 7, and upper rotating disks 16. When the device is in a sealed state, the upper end surface of the quartz tube 8 is connected to the exhaust port 6 installed on the upper rotating disk 16, and is fixed and sealed by the upper support seal 7. The inlet and exhaust flow rates of each quartz tube 8 are controlled by solenoid valves (inlet solenoid valves and exhaust solenoid valves) respectively. The above-mentioned inlet port 12, inlet solenoid valve, exhaust port 6, and exhaust solenoid valve constitute a cooling system, which can cool down the sample in each quartz tube 8 separately. The inlet port 12 and exhaust port 6 of the present invention serve as connection ports with the external pipeline and the solenoid valve. The function of the lower support seal 13 and the upper support seal 7 is to seal the inlet port 12 and the exhaust port 6 with the quartz tube 8.

[0030] The rotation centers of the upper rotating disk 16 and the lower rotating disk 11 in the sealed state coincide with the axis of the quartz tube 8, so that the elliptical gold-surface reflector 2 and the refractory fiber block 3 can rotate 360° around the axis of the quartz tube 8, and the heating rate and heating temperature of the sample can be precisely controlled by adjusting different rotation angles. When cooling the sample, the elliptical gold-surface reflector 2 rotates in the direction facing the observation window 9 on the housing 14 to block the heat radiation received by the sample.

[0031] An observation window 9 is provided on the housing 14 at a position corresponding to each quartz tube 8, for observing the state of the sample during the cooling stage. An observation baffle 10 is provided on the observation window 9. When the sample is in a heating state, the observation baffle 10 is closed to prevent infrared rays from causing harm to personnel. Each lower rotating disk 11 can rotate to make the elliptical gold-surface reflector 2 face the direction of the observation window 9, so that the quartz tube 8 is in a cooling position to prevent the sample from being subjected to heat radiation. When the sample is in a cooling state, the observation baffle 10 can be opened, and the state of the sample can be observed through the observation window 9.

[0032] Below, refer to Figure 1 and 2 Combined with the description of the above structural features, the working principle of the high-temperature alloy high-throughput heat treatment experimental device of the present application is introduced:

[0033] According to the requirements, the high-temperature alloy experimental sample that needs heat treatment is connected to the thermocouple and placed in the quartz tube 8, and the quartz tube 8 is inserted into the lower support seal ring 13. The lifting column 1 adjusts the horizontal position of the cover 5 so that the upper support seal ring 7 corresponds to the position of the quartz tube 8. The lifting column 1 controls the cover 5 to descend, and the upper end surface of the quartz tube 8 is inserted into the upper support seal ring 7. Confirm that the device is completely sealed at this time, open the exhaust outlet end solenoid valve (exhaust solenoid valve), so that the exhaust pipe and the quartz tube 8 are in a negative pressure state.

[0034] The heat treatment process of the station sample is set by the program. During the experiment, according to the process curve set by the program, the infrared heating rod 4 is turned on to heat the sample during the heating stage. The principle is as follows Figure 2 As shown, the rotating disk adjusts the rotation angle according to the set heating rate and insulation temperature. When a certain station enters the cooling stage, the elliptical gold reflector 2 rotates to the direction facing the observation window 9 to block the heat radiation received by the sample, the air inlet solenoid valve opens, and controls the flow of the cooling medium to achieve precise control of the cooling rate. At this time, the observation baffle 10 can be opened, and the experimenter can observe the sample state through the observation window 9. If there is still a heating process in the future, the observation baffle 10 is closed, and the elliptical gold reflector 2 is rotated to an appropriate angle to heat the sample.

[0035] After the heat treatment process of a sample at a certain station is completed, the elliptical gold reflector 2 rotates to the direction facing the observation window 9 and waits for it. When all samples are tested, the infrared heating rod 4 is turned off. After the device is cooled, the exhaust solenoid valve is turned off, and the air intake solenoid valve controls the atmospheric pressure inside the quartz tube 8 to be equal to that outside, and the air intake solenoid valve is turned off. The lifting column 1 controls the cover 5 to move upward. When the moving distance is greater than the height of the upper support seal ring 7, the cover 5 is moved horizontally, and the quartz tube 8 is removed from the lower support seal ring 13, and the internal experimental samples are taken out.

[0036] During the experiment, the sample temperature data is collected in real time through thermocouples and fed back to the control program to ensure that the experiment is carried out according to the set process.

[0037] It can be seen from the technical scheme of the embodiment of the present invention that the present invention is a multi-station device suitable for high-temperature alloy heat treatment experiments. Compared with the prior art, the present invention can perform multiple groups of heat treatment experiments with different processes at one time, and has the characteristics of large one-time experiment volume and high thermal efficiency. It also has the advantages of small footprint, simple operation, high efficiency, and easy control of parameter variables.

[0038] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high-temperature alloy high-throughput heat treatment experimental device, comprising a housing (14) and an infrared heating rod (4) installed at the center of the housing (14), characterized in that: A plurality of lower rotating disks (11) evenly distributed around the circumference of the infrared heating rod (4) are rotatably mounted in the housing (14), and a quartz tube (8) is mounted at the rotation center of each lower rotating disk (11); A refractory fiber block (3) is mounted on the lower rotating disk (11), an elliptical gold-surface reflector (2) is inlaid on the elliptical surface of the refractory fiber block (3), the quartz tube (8) is located at the focus of the elliptical gold-surface reflector (2), and receives infrared rays directly irradiated by the infrared heating rod (4) and reflected by the elliptical gold-surface reflector (2), so as to heat the sample in the quartz tube (8); Each quartz tube (8) is individually connected to a cooling system for cooling the sample in the quartz tube (8); The cooling system comprises an air inlet (12) connected to the lower end surface of the quartz tube (8) and an air outlet (6) connected to the upper end surface of the quartz tube (8); An air inlet solenoid valve and an air outlet solenoid valve are respectively installed on the air inlet (12) and the air outlet (6) to control the flow rate of the cooling gas entering and exiting the quartz tube (8); The housing (14) is provided with observation windows (9) corresponding one to one with the refractory fiber blocks (3), and the observation windows (9) are opened and closed by an observation baffle (10); During the cooling stage, the lower rotating disk (11) rotates so that the elliptical gold reflector (2) faces the observation window (9) to block the heat radiation received by the sample in the quartz tube (8).

2. The high-temperature alloy high-throughput heat treatment experimental device according to claim 1, characterized in that: A cover (5) is provided above the housing (14) and is movable up and down by means of a lifting column (1); an upper rotating disk (16) is provided on the cover (5) and corresponds to the lower rotating disk (11) one by one and rotates synchronously with the lower rotating disk (11); an upper supporting sealing ring (7) for fixing and sealing the upper end surface of the quartz tube (8) is provided at the rotation center position of each upper rotating disk (16); The exhaust port (6) is installed on the upper rotating disk (16) at a position corresponding to the upper end surface of the quartz tube (8).

3. The high-temperature alloy high-throughput heat treatment experimental device according to claim 1 or 2, characterized in that: Each lower rotating disk (11) is provided with a lower supporting sealing ring (13) for fixing and sealing the lower end surface of the quartz tube (8); The air inlet (12) is installed on the lower rotating disk (11) at a position corresponding to the lower end surface of the quartz tube (8).

4. The high-temperature alloy high-throughput heat treatment experimental device according to claim 1, characterized in that: The quartz tube (8) is provided with a thermocouple for measuring the temperature of the sample.

5. The high-temperature alloy high-throughput heat treatment experimental device according to claim 1 or 2, characterized in that: The number of the lower rotating disks (11) is 6, and the refractory fiber blocks (3), the elliptical gold-surface reflector (2), and the quartz tubes (8) are arranged in a regular hexagon.

6. The high-temperature alloy high-throughput heat treatment experimental device according to claim 1, characterized in that: The housing (14) is circular and fixed on a base (15), and the lower rotating disk (11) is rotatably connected to the base (15).

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