A salt spray testing machine for detecting the corrosion resistance of single crystal nitride materials

Abstract

The present invention discloses a salt spray testing machine for detecting the corrosion resistance of single-crystalline nitride materials, belonging to the field of salt spray testing machines. It includes a test chamber. An experimental cavity is formed inside the test chamber, and two juxtaposed strip-shaped plates are movably connected to the bottom end surface of the experimental cavity. A synchronous driving mechanism is provided between the two strip-shaped plates. Notch openings for the strip-shaped plates to extend out are formed on both side surfaces of the test chamber, and sealing plates fixedly connected to the strip-shaped plates are movably connected inside the notch openings; A dual-axis motor is embedded in the middle position of the top end surface of each strip-shaped plate, and strip-shaped grooves are formed on both sides of the dual-axis motor. A transverse lead screw is rotatably connected inside each strip-shaped groove, and the end of the transverse lead screw is connected to the output shaft of the corresponding dual-axis motor. In the present invention, after the salt spray test is completed, it is convenient to comparatively observe the corrosion resistance of the side of the plate, improving the accuracy of the detection result.

Description

Technical Field

[0001] The present invention relates to the field of salt spray test machines, and specifically to a salt spray test machine for detecting the corrosion resistance of single crystal nitride materials. Background Art

[0002] Single crystal nitride materials are a class of materials with a single crystal structure formed by the combination of nitrogen elements and other metal or non-metal elements. Due to their excellent physical and chemical properties, single crystal nitride materials can be made into a variety of high-performance plates, which have a wide range of applications in multiple fields. In order to detect the corrosion resistance of single crystal nitride materials, the plates made of single crystal nitride materials can be tested through a salt spray test machine.

[0003] Existing salt spray test machines focus on observing the front and back sides of the plates when detecting the corrosion resistance of the plates, but ignore the corrosion resistance of the sides of the plates, which results in inaccurate final test results. And how to conveniently compare and observe the corrosion resistance of the sides of the plates after the salt spray test has become a difficult problem that needs to be solved urgently.

[0004] Therefore, those skilled in the art have provided a salt spray test machine for detecting the corrosion resistance of single crystal nitride materials to solve the problems raised in the above background art. Summary of the Invention

[0005] The purpose of the present invention is to provide a salt spray test machine for detecting the corrosion resistance of single crystal nitride materials, which can conveniently compare and observe the corrosion resistance of the sides of the plates after the salt spray test and improve the accuracy of the test results, so as to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A salt spray test machine for detecting the corrosion resistance of single crystal nitride materials includes a test chamber. An experimental cavity is provided inside the test chamber, and two juxtaposed strip-shaped plates are movably connected to the bottom end surface of the experimental cavity. A synchronous driving mechanism is provided between the two strip-shaped plates. Slots for the strip-shaped plates to extend out are provided on both sides of the test chamber, and a sealing plate fixedly connected to the strip-shaped plate is movably connected inside the slots;

[0008] A double-shaft motor is embedded in the middle position of the top end surface of each strip-shaped plate, and strip-shaped grooves are provided on both sides of the double-shaft motor. A transverse lead screw is rotatably connected inside each strip-shaped groove, and the end of the transverse lead screw is connected to the output shaft of the corresponding double-shaft motor. Two moving seats matching the strip-shaped grooves are threadedly connected to the outside of each transverse lead screw, and a feeding mechanism is fixedly connected to both the moving seat and the top of the double-shaft motor;

[0009] A background plate is fixedly connected to the middle position of the bottom end face of the test chamber, and a material pushing mechanism is arranged above the side face of the background plate. A self-cleaning filtering mechanism is arranged below the side face of the background plate, and a brine recovery tank is fixedly connected to the bottom end face of the test chamber below the self-cleaning filtering mechanism. A recovery chamber is arranged inside the brine recovery tank, and a water outlet is arranged at the top end of one side face of the brine recovery tank. A sewage cleaning port is arranged at the bottom end of the other side face of the brine recovery tank, and a plug is arranged in the sewage cleaning port;

[0010] Observation windows are embedded on both side faces of the test chamber, and an auxiliary observation mechanism is arranged on one side of the observation window.

[0011] As a further scheme of the present invention: the feeding mechanism specifically includes: a rotating motor, the top output shaft of the rotating motor is fixedly connected with a support plate, and an inclined groove is arranged on the top end face of the support plate. A triangular plate is movably connected inside the inclined groove, and a limiting member is arranged between the triangular plate and the inclined groove. The top end of the triangular plate is fixedly connected with a concave plate, and two fastening pins are symmetrically and movably connected to both side faces of the concave plate.

[0012] As a further scheme of the present invention: the limiting member specifically includes: limiting sliding grooves opened on both inner walls of the inclined groove, steel balls that are movably embedded at positions corresponding to the limiting sliding grooves on both side faces of the triangular plate, and the steel balls are movably connected inside the limiting sliding grooves.

[0013] As a further scheme of the present invention: the material pushing mechanism specifically includes: push rods located on both sides of the background plate, two parallel first cylinders are embedded on both side faces of the background plate, and the output shaft of the first cylinder is fixedly connected with the corresponding push rod.

[0014] As a further scheme of the present invention: five parallel silica gel wheels are rotatably connected to the middle position of the outer side face of the push rod.

[0015] As a further scheme of the present invention: the self-cleaning filtering mechanism specifically includes: a rectangular groove opened below the inside of the background plate, water inlets are symmetrically opened at the bottom ends of both side faces of the background plate, and filter nets are embedded inside the water inlets. Through grooves communicating with the brine recovery tank are opened on both sides of the bottom end face of the rectangular groove, and a vertical plate is movably connected to one side of the through groove. A thimble matching the mesh holes of the filter net is fixedly connected to one side face of the vertical plate, and the other side face of the vertical plate is inclined at the upper part. Two parallel second cylinders are fixedly connected to the top wall of the rectangular groove, and a trapezoidal plate is fixedly connected to the bottom output shafts of the two second cylinders together, and the trapezoidal plate is located between the two vertical plates. A plurality of parallel resetting members are arranged below the vertical plate.

[0016] As a further solution of the present invention: The reset member specifically includes a reset groove opened on the bottom end surface of the rectangular groove. A slide plate is movably connected inside the reset groove, and the top end of the slide plate is fixedly connected to the vertical plate. A first magnet is embedded on one side surface of the slide plate, and a second magnet is embedded at a position corresponding to the first magnet on one inner wall of the reset groove, and the first magnet and the second magnet repel each other magnetically.

[0017] As a further solution of the present invention: The auxiliary observation mechanism specifically includes a strip-shaped lifting plate located on the bottom end surface of the test chamber. Two vertical lead screws penetrate and are threadedly connected through both sides inside the strip-shaped lifting plate, and the bottom end of the vertical lead screw is rotatably connected to the bottom end surface of the test chamber. A lifting motor is fixedly connected to the top end surface of the test box corresponding to the vertical lead screw, and the bottom output shaft of the lifting motor is fixedly connected to the top end of the corresponding vertical lead screw. Five magnifying glasses arranged in parallel are embedded at the middle position on the side surface of the strip-shaped lifting plate.

[0018] As a further solution of the present invention: The synchronous driving mechanism specifically includes two driving motors embedded side by side on the bottom end surface of the test chamber. A gear is fixedly connected to the top output shaft of the driving motor. Rack teeth meshing with the gears are fixedly connected to the opposite side surfaces of the two strip-shaped plates. A traveling wheel is movably connected to the bottom end of the sealing plate.

[0019] As a further solution of the present invention: A fog inlet is fixedly connected to the top end surface of the test box, and a fog chamber communicating with it is opened below the fog inlet. A plurality of uniformly distributed spray heads are fixedly connected to the top end surface of the test chamber, and the spray heads are communicated with the fog chamber.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. This application can conveniently compare and observe the corrosion resistance of the side of the plate after the salt spray test is completed, improving the accuracy of the detection results. In addition, when observing the side of the plate, not only can multiple plates be brought closer together for convenient comparison and observation, but also the plate can be pushed towards the observation window to facilitate more detailed observation by the staff.

[0022] 2. Through the synchronous driving mechanism, the feeding mechanism and the two strip-shaped plates provided in this application, not only can two rows of nitrided single crystal plates be fed in and out simultaneously, but also five nitrided single crystal plates can be placed in each row, facilitating loading and unloading while also increasing the test volume and accelerating the test speed. In addition, the feeding mechanism can also achieve the effect of automatic reset after unloading through the weights of the nitrided single crystal plates, the concave plates, and the triangular plates.

[0023] 3. The pushing mechanism provided in this application can push the board towards the observation window when needed, facilitating more detailed observation by the staff. Among them, the silicone wheel can reduce the wear between the push rod and the board while reducing the frictional resistance between the push rod and the board.

[0024] 4. The self-cleaning filtration mechanism provided in this application can not only filter and recycle the brine through the filter net, but also regularly clean the pores of the filter net to prevent the blockage of the pores of the filter net from affecting the brine flow.

[0025] 5. The auxiliary observation mechanism provided in this application can further improve the clarity of observing the side of the single crystal nitride board, thereby improving the accuracy of observation. Description of the Drawings

[0026] Figure 1 It is a schematic structural view of a salt spray test machine for detecting the corrosion resistance of single crystal nitride materials;

[0027] Figure 2 It is an internal view of the test chamber in a salt spray test machine for detecting the corrosion resistance of single crystal nitride materials;

[0028] Figure 3 It is a combined view of the strip board and the sealing board in a salt spray test machine for detecting the corrosion resistance of single crystal nitride materials;

[0029] Figure 4 It is in a salt spray test machine for detecting the corrosion resistance of single crystal nitride materials Figure 3 Enlarged view of part A;

[0030] Figure 5 It is a combined view of the dual-axis motor and the strip groove in a salt spray test machine for detecting the corrosion resistance of single crystal nitride materials;

[0031] Figure 6 It is an internal view of the rectangular groove in a salt spray test machine for detecting the corrosion resistance of single crystal nitride materials;

[0032] Figure 7 It is in a salt spray test machine for detecting the corrosion resistance of single crystal nitride materials Figure 6 Enlarged view of part B;

[0033] Figure 8 It is an internal view of the brine recovery tank in a salt spray test machine for detecting the corrosion resistance of single crystal nitride materials.

[0034] In the figure: 1. test chamber; 2. test cavity; 3. strip plate; 4. drive motor; 5. gear; 6. rack; 7. notch; 8. sealing plate; 9. walking wheel; 10. observation window; 11. strip lifting plate; 12. magnifying glass; 13. vertical lead screw; 14. lifting motor; 15. double-shaft motor; 16. strip groove; 17. horizontal lead screw; 18. moving seat; 19. rotating motor; 20. support plate; 21. inclined groove; 22. triangular plate; 23. concave plate; 24. fastening pin; 25. steel ball; 26. limit chute; 27. background plate; 28. first cylinder; 29. push rod; 30. silicone wheel; 31. rectangular groove; 32. filter screen; 33. brine recovery tank; 34. through groove; 35. vertical plate; 36. ejector pin; 37. reset groove; 38. sliding plate; 39. first magnet; 40. second magnet; 41. second cylinder; 42. trapezoidal plate; 43. recovery cavity; 44. water outlet; 45. cleaning port; 46. plug; 47. fog inlet; 48. fog cavity; 49. spray head. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] As mentioned in the background art of this application, through research, it is found that when the existing brine spray testing machine detects the corrosion resistance of plates, it focuses on observing the front and back sides of the plates, but ignores the corrosion resistance of the sides of the plates, which results in inaccurate final test results and certain defects.

[0037] To solve the above defects, this application discloses a brine spray testing machine for detecting the corrosion resistance of nitride single crystal materials, which can conveniently compare and observe the corrosion resistance of the sides of the plates after the brine spray test is completed, and improve the accuracy of the test results.

[0038] The following will introduce in detail how the solution of this application solves the above technical problems in conjunction with the accompanying drawings.

[0039] Please refer to Figures 1 to 8, in the embodiment of the present invention, a salt spray test machine for detecting the corrosion resistance of a nitrided single crystal material includes a test chamber 1. An experimental cavity 2 is formed inside the test chamber 1, and two juxtaposed strip plates 3 are movably connected to the bottom end surface of the experimental cavity 2. A synchronous driving mechanism is provided between the two strip plates 3. Notches 7 for the strip plates 3 to extend out are formed on both side surfaces of the test chamber 1, and a sealing plate 8 fixedly connected to the strip plate 3 is movably connected inside the notch 7; a biaxial motor 15 is embedded in the middle position of the top end surface of each strip plate 3, and strip grooves 16 are formed on both sides of the biaxial motor 15. A transverse lead screw 17 is rotatably connected inside each strip groove 16, and the end of the transverse lead screw 17 is connected to the output shaft of the corresponding biaxial motor 15. Two moving seats 18 matching the strip grooves 16 are threadedly connected to the outside of each transverse lead screw 17, and a feeding mechanism is fixedly connected to both the moving seat 18 and the top end of the biaxial motor 15; a background plate 27 is fixedly connected to the middle position of the bottom end surface of the experimental cavity 2, a pushing mechanism is provided above the side surface of the background plate 27, a self-cleaning filtering mechanism is provided below the side surface of the background plate 27, and a salt water recovery tank 33 is fixedly connected to the bottom end surface of the test chamber 1 below the self-cleaning filtering mechanism. A recovery cavity 43 is formed inside the salt water recovery tank 33, a water outlet 44 is formed at the top end of one side surface of the salt water recovery tank 33, a sewage cleaning port 45 is formed at the bottom end of the other side surface of the salt water recovery tank 33, and a plug 46 is provided inside the sewage cleaning port 45; observation windows 10 are embedded on both side surfaces of the test chamber 1, and an auxiliary observation mechanism is provided on one side of the observation window 10. This application can facilitate the comparative observation of the corrosion resistance of the side edges of the plates after the salt spray test is completed, improve the accuracy of the detection results. In addition, when observing the side edges of the plates, not only can multiple plates be brought closer together for convenient comparative observation, but also the plates can be pushed towards the observation window 10 to facilitate more detailed observation by the staff.

[0040] In this embodiment, the feeding mechanism specifically includes: a rotary motor 19. The top output shaft of the rotary motor 19 is fixedly connected to a support plate 20, and an inclined groove 21 is formed on the top end surface of the support plate 20. A triangular plate 22 is movably connected inside the inclined groove 21, and a limiting member is provided between the triangular plate 22 and the inclined groove 21. The top end of the triangular plate 22 is fixedly connected to a concave plate 23, and two fastening pins 24 are symmetrically and movably connected to both side surfaces of the concave plate 23. Through the synchronous driving mechanism, the feeding mechanism and the two strip plates 3 provided in this application, not only can two rows of nitrided single crystal plates be fed in and out simultaneously, but also five nitrided single crystal plates can be placed in each row, which is convenient for loading and unloading and can also increase the test volume and speed up the test. In addition, the feeding mechanism can also achieve the effect of automatic reset after unloading through the weights of the nitrided single crystal plates, the concave plate 23 and the triangular plate 22.

[0041] In this embodiment, the limiting member specifically includes: limiting slide grooves 26 provided on the inner walls of both sides of the oblique groove 21, movable steel balls 25 are embedded at positions on both sides of the triangular plate 22 corresponding to the limiting slide grooves 26, and the steel balls 25 are movably connected inside the limiting slide grooves 26. The setting of the limiting member can improve the stability of the displacement process of the triangular plate 22 and the oblique groove 21 and limit the moving distance.

[0042] In this embodiment, the material pushing mechanism specifically includes: push rods 29 located on both sides of the background plate 27, two parallel first cylinders 28 are embedded on both sides of the background plate 27, and the output shafts of the first cylinders 28 are fixedly connected to the corresponding push rods 29. The material pushing mechanism can push the plate toward the observation window 10 when needed, so that the staff can observe more carefully.

[0043] In this embodiment, five parallel silicone wheels 30 are rotatably connected to the middle position of the outer side of the push rod 29. The setting of the silicone wheels 30 can reduce the wear of the push rod 29 and the plate while reducing the friction resistance between the push rod 29 and the plate.

[0044] In this embodiment, the self-cleaning filter mechanism specifically includes: a rectangular groove 31 opened at the bottom of the background plate 27, water inlets symmetrically opened at the bottom ends of the two sides of the background plate 27, and a filter screen 32 embedded in the water inlet, through grooves 34 connected to the salt water recovery box 33 are opened on both sides of the bottom end surface of the rectangular groove 31, and a vertical plate 35 is movably connected to one side of the through groove 34, a side of the vertical plate 35 is fixedly connected to a pin 36 matching the mesh of the filter screen 32, and the other side of the vertical plate 35 is inclined above, and the top wall of the rectangular groove 31 is fixedly connected to two parallel second cylinders 41, and the bottom output shafts of the two second cylinders 41 are fixedly connected to a trapezoidal plate 42, and the trapezoidal plate 42 is located between the two vertical plates 35, and a plurality of parallel reset parts are arranged below the vertical plates 35. Through the self-cleaning filter mechanism, not only can the salt water be filtered and recovered through the filter screen 32, but also the mesh of the filter screen 32 can be regularly cleaned to prevent the mesh of the filter screen 32 from being blocked and affecting the flow of salt water.

[0045] In this embodiment, the reset member specifically includes: a reset groove 37 provided on the bottom end surface of the rectangular groove 31, a slide plate 38 movably connected inside the reset groove 37, and the top of the slide plate 38 is fixedly connected to the vertical plate 35, a first magnet 39 is embedded on one side of the slide plate 38, and a second magnet 40 is embedded on the inner wall of one side of the reset groove 37 at a position corresponding to the first magnet 39, and the first magnet 39 and the second magnet 40 repel each other magnetically. The reset member can restore the vertical plate 35 to its initial position after the external force disappears.

[0046] In this embodiment, the auxiliary observation mechanism specifically includes: a strip-shaped lifting plate 11 located on the bottom end surface of the test chamber 2. Both sides inside the strip-shaped lifting plate 11 are penetrated and threadedly connected with vertical lead screws 13, and the bottom ends of the vertical lead screws 13 are rotatably connected to the bottom end surface of the test chamber 2. A lifting motor 14 is fixedly connected to the top end surface of the test chamber 1 at a position corresponding to the vertical lead screw 13, and the bottom output shaft of the lifting motor 14 is fixedly connected to the top end of the corresponding vertical lead screw 13. Five magnifying glasses 12 arranged side by side are embedded in the middle position of the side surface of the strip-shaped lifting plate 11. By providing the auxiliary observation mechanism, the clarity of observing the side of the single-crystal nitride plate can be further improved, thereby improving the accuracy of observation.

[0047] In this embodiment, the synchronous driving mechanism specifically includes: two driving motors 4 embedded side by side on the bottom end surface of the test chamber 2. The top output shafts of the driving motors 4 are fixedly connected with gears 5. Rack bars 6 meshing with the gears 5 are fixedly connected to the opposite side surfaces of the two strip-shaped plates 3. A traveling wheel 9 is movably connected to the bottom end of the sealing plate 8. The synchronous driving mechanism can drive the two strip-shaped plates 3 to move simultaneously.

[0048] In this embodiment, a fog inlet 47 is fixedly connected to the top end surface of the test chamber 1, and a fog chamber 48 communicating with the fog inlet 47 is opened below the fog inlet 47. A plurality of spray heads 49 evenly distributed are fixedly connected to the top end surface of the test chamber 2, and the spray heads 49 are communicated with the fog chamber 48. This setting can ensure the smooth progress of the salt spray test.

[0049] The working principle of the present invention is as follows: When in use, first, the synchronous driving mechanism operates to extend the two strip-shaped plates 3. Specifically: the two driving motors 4 operate to drive the gears 5 to rotate clockwise. Since the gears 5 mesh with the rack bars 6, the two rack bars 6 move in opposite directions, thereby driving the two strip-shaped plates 3 to extend from the two notches 7 respectively. During the process, the traveling wheels 9 on the sealing plate 8 roll on the ground. After all the feeding mechanisms extend out of the test chamber 2, the staff places the single-crystal nitride plate to be tested into the feeding mechanism and fastens it. Specifically: the single-crystal nitride plate is placed into the groove of the concave plate 23, and then it is clamped and fixed by the fastening pin 24.

[0050] Then, the synchronous driving mechanism operates again, and the driving motors 4 reverse to drive the gears 5 to rotate counterclockwise, and the two strip-shaped plates 3 retract into the test chamber 2 from the two notches 7 respectively. Immediately afterwards, the salt spray test starts. The external salt spray is sent into the fog chamber 48 through the fog inlet 47 and then sprayed into the test chamber 2 from the spray heads 49. During the process of the salt spray contacting the single-crystal nitride plate, the rotating motor 19 operates to drive the support plate 20, the concave plate 23, and the single-crystal nitride plate to rotate, thereby making the contact between the single-crystal nitride plate and the salt spray more uniform.

[0051] After the salt spray test is completed, the rotating motor 19 operates to turn the sides of each single-crystalline nitride plate towards the observation window 10. Immediately afterwards, the biaxial motor 15 operates to drive the transverse lead screw 17 to rotate. It should be noted that the thread directions of the two transverse lead screws 17 on both sides of the biaxial motor 15 are opposite. Therefore, as the biaxial motor 15 operates, the five single-crystalline nitride plates in the same row move closer to each other at the middle position. Subsequently, the pusher mechanism operates to push the single-crystalline nitride plates in the same row towards the observation window 10. Specifically: the first cylinder 28 operates to extend the output shaft to drive the push rod 29 forward. During the process, the five silicone wheels 30 on the push rod 29 respectively abut against the sides of the five single-crystalline nitride plates. As the push rod 29 continues to advance, the push rod 29 pushes the single-crystalline nitride plate together with the concave plate 23 obliquely upward. During the process of the triangular plate 22 moving along the inclined groove 21, the steel ball 25 moves from one end of the limit chute 26 to the other end.

[0052] After the single-crystalline nitride plates in the same row are pushed towards the observation window 10, the staff can more accurately obtain the corrosion resistance of the single-crystalline nitride plates by simultaneously observing and comparing the corrosion conditions of the sides of the five single-crystalline nitride plates. Pushing the single-crystalline nitride plates towards the position close to the observation window 10 is convenient for the staff to observe better and more clearly, thereby avoiding misjudgment. If the staff feels that the observation of the single-crystalline nitride plates is still not clear enough, they can use the auxiliary observation mechanism for assistance. Specifically: the lifting motor 14 operates to drive the vertical lead screw 13 to rotate, and the strip-shaped lifting plate 11 slowly rises along the vertical lead screw 13. During the process, the staff can magnify and observe the corrosion conditions of the sides of the five single-crystalline nitride plates through the five magnifying glasses 12.

[0053] After the observation is completed, only need to retract the push rod 29 through the first cylinder 28. At this time, the triangular plate 22 slowly moves obliquely downward along the inclined groove 21 under the action of its own gravity and the gravity of the concave plate 23 and the single-crystalline nitride plate until the triangular plate 22 abuts against the inner wall of the inclined groove 21. The salt water generated during the salt spray test falls on the bottom end surface of the test chamber 2 and then flows into the rectangular groove 31 after being filtered by the filter screen 32, and then flows into the recovery chamber 43 of the salt water recovery tank 33 along the through groove 34. After the salt water enters the recovery chamber 43 and precipitates for a period of time, the impurities are deposited at the bottom and can be cleaned through the cleaning port 45, while the salt water can flow out through the water outlet 44 on the upper layer.

[0054] As time goes by, the mesh holes of the filter screen 32 will be blocked by a large amount of impurities, resulting in a decline in the performance of the filter screen 32. Therefore, every once in a while, the second cylinder 41 operates to extend its output shaft downward to drive the trapezoidal plate 42 to descend. During this process, the trapezoidal plate 42 acts on the vertical plate 35 through an inclined plane, causing the two vertical plates 35 to move away from each other. The ejector pins 36 on the moving vertical plate 35 are inserted into the mesh holes of the filter screen 32 to pierce the blocked mesh holes, thus facilitating the flow of brine. During the movement of the vertical plate 35, the sliding plate 38 moves along the reset groove 37, and the distance between the first magnet 39 and the second magnet 40 becomes smaller. After the second cylinder 41 retracts its output shaft to raise the trapezoidal plate 42, the magnetic repulsive force between the first magnet 39 and the second magnet 40 restores the two vertical plates 35 to their initial positions.

[0055] It should be noted that in addition to facilitating a clearer observation of the sides of multiple single-crystalline nitride plates, the present application can also simultaneously perform synchronous comparative observations on the front and back sides of multiple single-crystalline nitride plates. Specifically, the rotation motor 19 operates to face the front or back side of each single-crystalline nitride plate towards the observation window 10, and then the biaxial motor 15 drives the transverse lead screw 17 to rotate, causing the five single-crystalline nitride plates in the same row to move closer together towards the middle. Subsequently, the staff can simultaneously observe the corrosion resistance of the front or back sides of the five single-crystalline nitride plates in a row through the observation window 10, and more accurate test results can be obtained through comparative analysis.

[0056] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these changes and modifications.

[0057] The above-mentioned are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. A salt spray tester for testing the corrosion resistance of nitride single crystal materials, characterized in that: The test box (1) comprises a test chamber (2) formed inside the test chamber (1), and two parallel strip plates (3) are movably connected to the bottom end surface of the test chamber (2), a synchronous driving mechanism is provided between the two strip plates (3), and slots (7) are formed on both sides of the test chamber (1) for the strip plates (3) to extend out, and sealing plates (8) fixedly connected to the strip plates (3) are movably connected inside the slots (7); A dual-axis motor (15) is embedded in the middle of the top surface of each strip plate (3), and strip grooves (16) are provided on both sides of the dual-axis motor (15), each strip groove (16) is rotatably connected to a transverse lead screw (17) inside, and the end of the transverse lead screw (17) is connected to the corresponding output shaft of the dual-axis motor (15), and the external thread of each transverse lead screw (17) is connected to two movable seats (18) matching the strip grooves (16), and the movable seat (18) and the top of the dual-axis motor (15) are fixedly connected to a material discharge mechanism; A background plate (27) is fixedly connected to the middle position of the bottom end surface of the test chamber (2), and a material pushing mechanism is provided on the upper side of the background plate (27), a self-cleaning filter mechanism is provided on the lower side of the background plate (27), and a salt water recovery box (33) is fixedly connected to the bottom end surface of the test box (1) below the self-cleaning filter mechanism, a recovery chamber (43) is provided inside the salt water recovery box (33), and a water outlet (44) is provided at the top of one side of the salt water recovery box (33), a sewage cleaning port (45) is provided at the bottom of the other side of the salt water recovery box (33), and a plug (46) is provided in the sewage cleaning port (45); The other two side surfaces of the test box (1) are both embedded with observation windows (10), and one side of the observation window (10) is provided with an auxiliary observation mechanism; The top surface of the test box (1) is fixedly connected to a mist inlet (47), and a mist cavity (48) communicating with the mist inlet (47) is provided below the mist inlet (47). The top surface of the test cavity (2) is fixedly connected to a plurality of evenly distributed spray heads (49), and the spray heads (49) are communicated with the mist cavity (48).

2. A salt spray testing machine for corrosion resistance testing of nitride single crystal materials according to claim 1, characterized in that: The material discharge mechanism specifically comprises: a rotating motor (19), the top output shaft of the rotating motor (19) is fixedly connected to a support plate (20), the top surface of the support plate (20) is provided with an oblique groove (21), the interior of the oblique groove (21) is movably connected to a triangular plate (22), a stopper is provided between the triangular plate (22) and the oblique groove (21), the top of the triangular plate (22) is fixedly connected to a concave plate (23), and two side surfaces of the concave plate (23) are symmetrically and movably connected to two fastening pins (24).

3. The salt spray testing machine for corrosion resistance testing of nitride single crystal materials according to claim 2, characterized in that: The limiting member specifically comprises: limiting slide grooves (26) provided on the inner walls on both sides of the oblique groove (21); movable steel balls (25) are embedded at positions on both sides of the triangular plate (22) corresponding to the limiting slide grooves (26); and the steel balls (25) are movably connected inside the limiting slide grooves (26).

4. The salt water spray testing machine for corrosion resistance testing of nitride single crystal materials according to claim 1, characterized in that: The material pushing mechanism specifically comprises push rods (29) located on both sides of the background plate (27), two parallel first cylinders (28) are embedded on both sides of the background plate (27), and the output shafts of the first cylinders (28) are fixedly connected to the corresponding push rods (29).

5. The salt spray testing machine for corrosion resistance testing of nitride single crystal materials according to claim 4, characterized in that: Five parallel silicone wheels (30) are rotatably connected at the middle position of the outer side surface of the push rod (29).

6. The salt spray testing machine for corrosion resistance testing of nitride single crystal materials according to claim 1, characterized in that: The self-cleaning filtering mechanism specifically comprises: a rectangular groove (31) provided at the lower part of the interior of the background plate (27); water inlets symmetrically provided at the bottom ends of the two side surfaces of the background plate (27); and a filter screen (32) embedded in the water inlet; through grooves (34) communicating with the salt water recovery tank (33) provided at both sides of the bottom end surface of the rectangular groove (31); and a vertical plate (35) movably connected to one side of the through groove (34); a top pin (36) matching the mesh of the filter screen (32) fixedly connected to one side of the vertical plate (35); and an inclined surface formed at the top of the other side of the vertical plate (35); two parallel second cylinders (41) fixedly connected to the top wall of the rectangular groove (31); the bottom output shafts of the two second cylinders (41) fixedly connected to a trapezoidal plate (42); and the trapezoidal plate (42) is located between the two vertical plates (35); and a plurality of parallel reset members are provided below the vertical plate (35).

7. The salt spray testing machine for corrosion resistance testing of nitride single crystal materials according to claim 6, characterized in that: The reset member specifically comprises: a reset groove (37) formed on the bottom end surface of the rectangular groove (31); a slide plate (38) is movably connected inside the reset groove (37); the top of the slide plate (38) is fixedly connected to the vertical plate (35); a first magnet (39) is embedded in one side surface of the slide plate (38); a second magnet (40) is embedded in the inner wall of one side of the reset groove (37) at a position corresponding to the first magnet (39); and the first magnet (39) and the second magnet (40) are magnetically repelled from each other.

8. The salt water spray testing machine for corrosion resistance testing of nitride single crystal materials according to claim 1, characterized in that: The auxiliary observation mechanism specifically comprises: a strip lifting plate (11) located on the bottom end surface of the test chamber (2), vertical screws (13) passing through and threadedly connected to the inner sides of the strip lifting plate (11), and the bottom end of the vertical screw (13) is rotatably connected to the bottom end surface of the test chamber (2), a lifting motor (14) is fixedly connected to the position of the top surface of the test box (1) corresponding to the vertical screw (13), and the bottom output shaft of the lifting motor (14) is fixedly connected to the top of the corresponding vertical screw (13), and five parallel magnifying glasses (12) are embedded in the middle position of the side of the strip lifting plate (11).

9. The salt water spray testing machine for corrosion resistance testing of nitride single crystal materials according to claim 1, characterized in that: The synchronous drive mechanism specifically comprises: two drive motors (4) embedded in parallel on the bottom surface of the test chamber (2); the top output shaft of the drive motor (4) is fixedly connected to a gear (5); the opposite sides of the two strip plates (3) are fixedly connected to racks (6) meshing with the gear (5); and the bottom end of the sealing plate (8) is movably connected to a walking wheel (9).

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