Experimental device for detecting thermal shock performance of protective coating

Abstract

The utility model discloses an experimental device for detecting the thermal shock performance of a protective coating. The experimental device comprises an experimental table, a cooling water tank, a motor, a turntable, a connecting rod and a flame spray gun, the experiment table comprises a frame body, a table plate and a supporting plate; an avoiding hole is formed in the table plate, the bottom end of the cooling water tank is fixed to the supporting plate, and the top end of the cooling water tank upwards penetrates out of the avoiding hole and is provided with a cooling water filling opening; the motor is fixed on the bedplate; the turntable is positioned above the cooling water filling port and is in transmission connection with an output shaft of the motor; the connecting rods are radially arranged along the turntable, first ends of the connecting rods are fixed on the turntable, clamps are fixed at second ends of the connecting rods, and the clamps can clamp a to-be-tested metal piece coated with a protective coating; the flame spraying gun is installed on the platen, and the flame spraying end of the flame spraying gun faces the rotating disc. The experimental device for detecting the thermal shock performance of the protective coating disclosed by the utility model is time-saving and labor-saving, and a metal piece to be detected coated with the protective coating can be rapidly and repeatedly heated and cooled.

Description

TECHNICAL FIELD

[0001] The utility model relates to the thermal shock performance detection technical field of protective coating, more specifically relates to a kind of experimental device for detecting the thermal shock performance of protective coating. BACKGROUND

[0002] Metal surface protective coating refers to the corrosion-resistant, wear-resistant material coated on the metal surface to form a barrier, to isolate the metal and corrosion medium or with wear medium contact, so as to achieve the purpose of protecting the metal surface, in modern industry, coating protective coating on the metal surface can provide protection for various metal materials, prolong its service life, improve its performance. Thermal shock performance is one of the key indicators to measure the quality and reliability of protective coating, in practical application, protective coating often experiences sharp temperature changes, for example, between high temperature environment and low temperature environment, or in the heating and cooling process, withstands large temperature gradient, if the thermal shock performance of protective coating is poor, cracking, peeling, loss of protection function and other problems may occur, thereby affecting the service life of the protected material.

[0003] With the continuous development of industrial technology, the thermal shock performance requirement of metal surface protective coating is higher and higher. At present, the traditional experimental detection method for protective coating thermal shock performance is as follows: first, protective coating is coated on the metal piece to be measured, then the worker manually cycles the metal piece to be measured heating and cooling, until the protective coating appears cracking or peeling phenomenon. This method not only time-consuming, low efficiency, but also has the risk of scalding workers.

[0004] Therefore, how to provide a time-saving and labor-saving, high-efficiency, easy-to-operate and control experimental device for detecting the thermal shock performance of protective coating is a problem that the skilled in the art needs to solve. UTILITY MODEL CONTENT

[0005] Therefore, the utility model aims at providing an experimental device for detecting the thermal shock performance of protective coating, solving the technical problem of low efficiency, time-consuming and labor-consuming of the existing method for detecting the thermal shock performance of protective coating.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An experimental device for detecting thermal shock performance of protective coating, comprising an experimental table, a cooling water tank, a motor, a rotating disc, a connecting rod and a flame spraying gun; the experimental table comprises a frame, a table plate fixed on the upper end of the frame and a support plate fixed on the middle part of the frame; the table plate is provided with an avoiding hole, the bottom end of the cooling water tank is fixed on the support plate, the top end penetrates out of the avoiding hole upward and is provided with a cooling water filling port; the motor is fixed on the table plate and corresponds to one side of the cooling water filling port, the axis of the output shaft of the motor is arranged in parallel with the table plate; the rotating disc is located above the cooling water filling port and the rotating axis thereof is arranged in parallel with the table plate, the rotating disc is in transmission connection with the output shaft of the motor through a transmission connecting piece; the connecting rod is arranged radially along the rotating disc, the first end thereof is fixed on the rotating disc, the second end is fixed with a clamp, the clamp can clamp a metal piece to be measured coated with a protective coating; the flame spraying gun is installed on the table plate and is arranged opposite to the motor on the other side of the cooling water filling port, the flame spraying end thereof is arranged toward the direction of the rotating disc; the rotating of the rotating disc can make the metal piece to be measured align with the flame spraying end or immerse in the cooling water in the cooling water tank.

[0008] The metal piece to be measured can be a metal rod, a metal ball or other metal pieces with regular shape and easy to be clamped, and the metal piece to be measured in the utility model is a spherical valve core.

[0009] Compared with the prior art, the utility model discloses an experimental device for detecting thermal shock performance of protective coating, the motor can make the rotating disc rotate, and then the clamp holding the metal piece to be measured rotates around the rotating axis of the rotating disc, when the metal piece to be measured rotates to correspond to the flame spraying end of the flame spraying gun, the flame spraying gun heats the metal piece to be measured, then the metal piece to be measured rotates to immerse in the cooling water in the cooling water tank to cool, and the metal piece to be measured is repeatedly heated and cooled in this way.

[0010] Preferably, the clamp comprises upper and lower clamping blocks in butt joint, the butt joint end of the upper clamping block and the butt joint end of the lower clamping block are provided with clamping notches, the metal piece to be measured can be clamped in the clamping notches of the two, the end of the lower clamping block away from the clamping notches is fixedly connected with the second end of the connecting rod; the upper clamping block and the lower clamping block are provided with screw holes penetrating through upward and downward, and the upper clamping block and the lower clamping block are detachably connected through bolts penetrating through the screw holes.

[0011] The upper clamping block and the lower clamping block detachably connected through bolts can clamp the metal piece to be measured in the clamping notches of the two.

[0012] Preferably, the experimental device for detecting thermal shock resistance of protective coating further comprises a motor fixing frame, the motor fixing frame comprises a bottom plate and a mounting plate; the bottom plate is arranged on the side of the cooling water filling port, and the lower plate surface of the bottom plate is fixedly connected with the upper plate surface of the table plate; the bottom end of the mounting plate is vertically and fixedly connected with the upper plate surface of the bottom plate, and the motor is fixed on the mounting plate.

[0013] The beneficial effect of the above technical solution is that the motor fixing frame can stably fix the motor on the table plate.

[0014] Preferably, the transmission connecting piece comprises a rotating shaft and a shaft coupling; a rotating shaft connecting hole is formed in the center of the rotating disc, and one end of the rotating shaft is fixed in the rotating shaft connecting hole; a motor shaft through hole is formed in the mounting plate, and the output shaft of the motor passes through the motor shaft through hole and is fixedly connected with the power input end of the shaft coupling, and the power output end of the shaft coupling is fixedly connected with the other end of the rotating shaft.

[0015] The beneficial effect of the above technical solution is that the motor transmits power to the rotating disc through the rotating shaft and the shaft coupling, and the transmission effect is good and the efficiency is high.

[0016] Preferably, the experimental device for detecting thermal shock resistance of protective coating further comprises a flame spray gun moving support mechanism, the flame spray gun moving support mechanism comprises a moving base rail, a sliding block, a stand and a flame spray gun fixing block; the moving base rail is arranged on the side of the cooling water filling port opposite to the motor, and the moving base rail is slidably connected with the upper plate surface of the table plate along the axis direction of the motor output shaft, and the length direction of the moving base rail is perpendicular to the axis of the motor output shaft; the bottom end of the sliding block is provided with a sliding groove, and the sliding groove is slidably connected with the moving base rail; the stand is arranged vertically to the table plate, and the bottom end of the stand is fixed on the top of the sliding block; the flame spray gun fixing block is slidably connected with the stand along the height direction of the stand, and one end of the flame spray gun fixing block is provided with a spray gun assembly hole, and the flame spray gun is fixedly arranged in the spray gun assembly hole.

[0017] The beneficial effect of the above technical solution is that the flame spray gun can move in multiple directions on the table plate through the moving base rail, the sliding block, the stand and the flame spray gun fixing block, so that the flame spraying end of the flame spray gun can be aligned with the metal piece to be measured and flame heating can be performed.

[0018] Preferably, the bottom of the two ends of the moving base rail along the length direction is fixed with a sliding column, and two strip-shaped sliding grooves are formed in the upper plate surface of the table plate and arranged along the axis of the motor output shaft, the two strip-shaped sliding grooves are parallel to each other and arranged on the side of the cooling water filling port opposite to the motor, and the sliding column is slidably connected in the corresponding strip-shaped sliding groove.

[0019] The beneficial effect of the above technical solution is that the sliding column at the bottom of the mobile base rail is in sliding connection with the strip-shaped sliding groove, facilitating the sliding of the mobile base rail on the platform along the axis direction of the motor output shaft.

[0020] Preferably, the bottom end of the stand is fixed to one side of the top of the sliding block, and the other end of the flame spraying gun fixing block is provided with a stand connecting hole, and the stand is in sliding connection with the stand connecting hole.

[0021] The beneficial effect of the above technical solution is that the flame spraying gun fixing block is facilitated to slide and lift on the stand.

[0022] Preferably, the flame spraying gun moving support mechanism further comprises a hydraulic rod, the fixed end of the hydraulic rod is fixed to the other side of the top of the sliding block, the telescopic rod of the hydraulic rod is arranged upward and fixedly connected with the bottom end of the flame spraying gun fixing block.

[0023] The beneficial effect of the above technical solution is that the hydraulic rod can realize the automatic lifting of the flame spraying gun fixing block and the flame spraying gun on the stand.

[0024] Preferably, the experimental device for detecting the thermal shock performance of the protective coating further comprises a controller, and the controller is electrically connected with the motor and the hydraulic rod.

[0025] Preferably, a plurality of weight reduction holes are formed in the rotating disc.

[0026] The beneficial effect of the above technical solution is that the weight reduction holes can reduce the weight of the rotating disc, and improve the energy efficiency and mechanical efficiency of the motor. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0028] Figure 1 The overall structure schematic diagram provided by the present application is shown in the figure.

[0029] Figure 2 The schematic diagram of the connection between the experimental table and the cooling water tank in the present application is shown in the figure.

[0030] Figure 3 The schematic diagram of the transmission connecting piece in the present application is shown in the figure.

[0031] Figure 4 The schematic diagram of the motor fixing frame in the present application is shown in the figure.

[0032] Figure 5 It is the schematic view of the connecting rod and the clamp connection in the utility model;

[0033] Figure 6 It is the schematic view of the turntable in the utility model;

[0034] Figure 7 It is the schematic view of the flame spray gun moving support mechanism in the utility model;

[0035] Figure 8 It is the schematic view of the moving base rail in the utility model;

[0036] Figure 9 It is the schematic view of the connecting of the slider and the stand column in the utility model;

[0037] Figure 10 It is the schematic view of the flame spray gun fixing block in the utility model.

[0038] Among them: 100-wait to be measured metal parts, 200-flame spray gun, 1-laboratory table, 2-cooling water tank, 3-motor, 4-turntable, 5-transmission connecting piece, 6-connecting rod, 7-clamp, 8-motor fixing frame, 9-flame spray gun moving support mechanism, 11-frame body, 12-table board, 13-supporting plate, 21-cooling water filling port, 41-rotary shaft connecting hole, 42-weight reduction hole, 51-rotary shaft, 52-coupling, 71-upper clamp block, 72-lower clamp block, 81-bottom plate, 82-mounting plate, 91-moving base rail, 92-slider, 93-stand column, 94-flame spray gun fixing block, 95-hydraulic rod, 111-strip-shaped sliding groove, 821-motor shaft perforation, 911-sliding column, 921-sliding groove, 941-spray gun assembly hole, 942-stand column connecting hole. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0040] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0041] In the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and so on should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be direct connection, also can pass through intermediate medium indirectly connect, can be two element inside's intercommunication or two element's interaction relation. For ordinary skilled person in the art, can understand the concrete meaning of above-mentioned term in the utility model according to specific circumstances.

[0042] Referring to the accompanying Figures 1 to 10 , it is an experimental device for detecting protective coating thermal shock resistance of the utility model, including experiment table 1, cooling water tank 2, motor 3, rotating disc 4, connecting rod 6 and flame spray gun 200;Experiment table 1 includes frame body 11, the table plate 12 of fixed in the upper end of frame body 11 and the support plate 13 of fixed in the middle part of frame body 11;Table plate 12 is equipped with the hole for avoiding, and the bottom end of cooling water tank 2 is fixed on support plate 13, and the top end is upwards and is equipped with cooling water filling opening 21 and passes out the hole for avoiding;Motor 3 is fixed on table plate 12 and is located the side corresponding to cooling water filling opening 21, and the axis of its output shaft is parallelly arranged with table plate 12;Rotating disc 4 is located above cooling water filling opening 21 and its rotating axis is parallelly arranged with table plate 12, and rotating disc 4 is driven connection with the output shaft of motor 3 through transmission connecting piece 5;Connecting rod 6 is arranged along the radial direction of rotating disc 4, and its first end is fixed on rotating disc 4, and the second end is fixed with clamp 7, and clamp 7 can hold the metal piece 100 to be measured coated with protective coating;Flame spray gun 200 is installed on table plate 12 and is located the other side of cooling water filling opening 21 and is arranged opposite to motor 3, and its flame spray end is arranged towards the direction of rotating disc 4;Rotating disc 4 can make the metal piece 100 to be measured align the flame spray end or immerse in the cooling water of cooling water tank 2.

[0043] The metal piece 100 to be measured can be a metal rod, a metal ball, or other regular-shaped metal pieces that are easy to clamp. In the utility model, the metal piece 100 to be measured is a spherical valve core.

[0044] Specifically, a plurality of weight-reducing holes 42 are formed on the rotating disc 4.

[0045] Specifically, the cooling water tank 2 can be externally connected to a drainage pipeline, and a drainage valve can be installed on the drainage pipeline.

[0046] In some specific examples, the clamp 7 includes an upper clamp block 71 and a lower clamp block 72 that are vertically connected. The abutting ends of the upper clamp block 71 and the lower clamp block 72 are each provided with a clamping recess, and the metal piece 100 to be measured can be clamped in the clamping recesses of the two. The end of the lower clamp block 72 away from the clamping recess is fixedly connected to the second end of the connecting rod 6. The upper clamp block 71 and the lower clamp block 72 are provided with vertically penetrating threaded holes, and a bolt passes through the threaded holes to detachably connect the upper clamp block 71 and the lower clamp block 72.

[0047] In some embodiments, the experimental device for detecting thermal shock resistance of protective coating further comprises a motor fixing frame 8, which comprises a bottom plate 81 and a mounting plate 82; the bottom plate 81 is arranged on the side of the cooling water filling port 21, and the lower plate surface is fixedly connected with the upper plate surface of the table plate 12; the bottom end of the mounting plate 82 is vertically and fixedly connected with the upper plate surface of the bottom plate 81, and the motor 3 is fixed on the mounting plate 82.

[0048] The bottom plate 81 and the mounting plate 82 can be made of steel plate with high strength.

[0049] In some specific examples, the transmission connecting piece 5 comprises a rotating shaft 51 and a shaft coupling 52; a rotating shaft connecting hole 41 is formed in the center of the rotating disc 4, and one end of the rotating shaft 51 is fixed in the rotating shaft connecting hole 41; a motor shaft through hole 821 is formed in the mounting plate 82, the output shaft of the motor 3 passes through the motor shaft through hole 821 and is fixedly connected with the power input end of the shaft coupling 52, and the power output end of the shaft coupling 52 is fixedly connected with the other end of the rotating shaft 51.

[0050] In some embodiments, the experimental device for detecting thermal shock resistance of protective coating further comprises a flame spray gun moving support mechanism 9, which comprises a moving base rail 91, a sliding block 92, a stand column 93 and a flame spray gun fixing block 94; the moving base rail 91 is arranged on the side of the cooling water filling port 21 opposite to the motor 3, and is slidingly connected with the upper plate surface of the table plate 12 along the axis direction of the output shaft of the motor 3, and the length direction thereof is perpendicular to the axis of the output shaft of the motor 3; the bottom end of the sliding block 92 is provided with a sliding groove 921, which is slidingly connected with the moving base rail 91; the stand column 93 is arranged vertically to the table plate 12, and the bottom end thereof is fixed on the top of the sliding block 92; the flame spray gun fixing block 94 is slidingly connected with the stand column 93 along the height direction thereof, and one end of the flame spray gun fixing block 94 is provided with a spray gun assembly hole 941, and the flame spray gun 200 is fixedly arranged in the spray gun assembly hole 941.

[0051] The flame spray gun moving support mechanism 9 can adjust the position of the multi-directional flame spray gun 200, so that the flame spray gun 200 can perform flame heating on the metal piece 100 clamped in the clamp 7.

[0052] In some specific examples, the bottom of the moving base rail 91 at both ends along the length direction is fixed with a sliding column 911, and two strip-shaped sliding grooves 111 are formed in the upper plate surface of the table plate 12 and arranged along the axis direction of the output shaft of the motor 3; the two strip-shaped sliding grooves 111 are parallel to each other and arranged on the side of the cooling water filling port 21 opposite to the motor 3, and the sliding column 911 is slidingly connected in the corresponding strip-shaped sliding groove 111.

[0053] In some specific examples, the bottom end of the stand column 93 is fixed to one side of the top of the sliding block 92, and the other end of the flame spraying gun fixing block 94 is provided with a stand column connecting hole 942, and the stand column 93 is in sliding connection with the stand column connecting hole 942.

[0054] In some specific examples, the flame spraying gun moving support mechanism 9 further comprises a hydraulic rod 95, the fixed end of the hydraulic rod 95 is fixed to the other side of the top of the sliding block 92, the telescopic rod of the hydraulic rod 95 is arranged upwardly and is fixedly connected with the bottom end of the flame spraying gun fixing block 94.

[0055] In some embodiments, the experimental device for detecting the thermal shock resistance of the protective coating further comprises a controller, the controller is electrically connected with the motor 3 and the hydraulic rod 95.

[0056] When the device is used to heat the metal piece coated with the protective coating, the controller is used to control the operation of the motor, the output shaft of the motor is rotated to drive the rotating disc to rotate synchronously, the clamp is rotated to be aligned with the flame spraying end of the flame spraying gun, then the flame spraying gun is controlled to spray the flame to heat the metal piece.

[0057] When the device is used to cool the metal piece coated with the protective coating, the controller is also used to control the operation of the motor, so that the clamp holding the metal piece is rotated to be immersed in the cooling water in the cooling water tank for cooling.

[0058] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An experimental apparatus for testing the thermal shock resistance of protective coatings, characterized in that, include: The experimental table (1) includes a frame (11), a table plate (12) fixed to the upper end of the frame (11), and a support plate (13) fixed to the middle part of the frame (11). Cooling water tank (2), the platform (12) is provided with a clearance hole, the bottom end of the cooling water tank (2) is fixed on the support plate (13), the top end extends upward through the clearance hole and is provided with a cooling water filling port (21); The motor (3) is fixed on the platform (12) and located on one side of the cooling water filling port (21), and the axis of its output shaft is arranged parallel to the platform (12). Turntable (4), the turntable (4) is located above the cooling water filling port (21) and its rotation axis is arranged parallel to the platform (12). The turntable (4) is connected to the output shaft of the motor (3) through a transmission connector (5). A connecting rod (6) is arranged radially along the turntable (4), with its first end fixed on the turntable (4) and its second end fixed with a clamp (7). The clamp (7) can hold a metal part (100) coated with a protective coating. A flame gun (200) is mounted on the platform (12) and located on the other side of the cooling water filling port (21) opposite to the motor (3), with its flame jet end facing the turntable (4); the rotation of the turntable (4) can make the metal part to be tested (100) aligned with the flame jet end or immersed in the cooling water of the cooling water tank (2).

2. The experimental apparatus for testing the thermal shock resistance of protective coatings according to claim 1, characterized in that, The clamp (7) includes an upper clamping block (71) and a lower clamping block (72) that are connected vertically. The mating ends of the upper clamping block (71) and the lower clamping block (72) are provided with clamping recesses. The metal part (100) to be tested can be clamped in the clamping recesses of the two. The end of the lower clamping block (72) away from the clamping recess is fixedly connected to the second end of the connecting rod (6). The upper clamping block (71) and the lower clamping block (72) are provided with threaded holes that are connected vertically. Bolts pass through the threaded holes to detachably connect the upper clamping block (71) and the lower clamping block (72).

3. The experimental apparatus for testing the thermal shock resistance of protective coatings according to claim 1, characterized in that, It also includes a motor mounting bracket (8), which comprises: The base plate (81) is arranged on one side of the cooling water filling port (21), and its lower plate surface is fixedly connected to the upper plate surface of the platform (12). Mounting plate (82), the bottom end of which is perpendicular to and fixedly connected to the upper surface of the base plate (81), and the motor (3) is fixed on the mounting plate (82).

4. The experimental apparatus for testing the thermal shock performance of protective coatings according to claim 3, characterized in that, The transmission connector (5) includes: A rotating shaft (51) is provided at the center of the turntable (4), and one end of the rotating shaft (51) is fixed in the rotating shaft connection hole (41). The coupling (52) has a motor shaft through hole (821) on the mounting plate (82). The output shaft of the motor (3) passes through the motor shaft through hole (821) and is fixedly connected to the power input end of the coupling (52). The power output end of the coupling (52) is fixedly connected to the other end of the rotating shaft (51).

5. The experimental apparatus for testing the thermal shock performance of protective coatings according to claim 3, characterized in that, It also includes a flame gun moving support mechanism (9), which comprises: The movable base rail (91) is arranged on the side of the cooling water filling port (21) opposite to the motor (3), and the movable base rail (91) is slidably connected to the upper plate of the platform (12) along the axial direction of the output shaft of the motor (3), and its length direction is perpendicular to the axis of the output shaft of the motor (3). A slider (92) is provided with a groove (921) at its bottom end, and the groove (921) is slidably connected to the movable base rail (91); A column (93) is arranged perpendicular to the platform (12), and its bottom end is fixed to the top of the slider (92); A flame gun fixing block (94) is slidably connected to the column (93) along its height direction, and a flame gun mounting hole (941) is provided at one end of the flame gun fixing block (94), and the flame gun (200) is axially fixed in the flame gun mounting hole (941).

6. The experimental apparatus for testing the thermal shock performance of protective coatings according to claim 5, characterized in that, The bottom of both ends of the moving base rail (91) along the length direction is fixed with sliding columns (911). Two strip-shaped sliding grooves (111) are opened on the upper plate surface of the platform (12) along the output shaft axis of the motor (3). The two strip-shaped sliding grooves (111) are parallel to each other and are arranged on the side of the cooling water filling port (21) opposite to the motor (3). The sliding column (911) is slidably connected in the corresponding strip-shaped sliding groove (111).

7. The experimental apparatus for testing the thermal shock performance of protective coatings according to claim 5, characterized in that, The bottom end of the column (93) is fixed to the top side of the slider (92), and the other end of the flame gun fixing block (94) is provided with a column connection hole (942). The column (93) is slidably connected to the column connection hole (942).

8. The experimental apparatus for testing the thermal shock performance of protective coatings according to claim 7, characterized in that, The flame gun moving support mechanism (9) also includes a hydraulic rod (95), the fixed end of which is fixed to the other side of the top of the slider (92), and its telescopic rod is arranged upward and fixedly connected to the bottom end of the flame gun fixing block (94).

9. The experimental apparatus for testing the thermal shock performance of protective coatings according to claim 8, characterized in that, It also includes a controller, which is electrically connected to the motor (3) and the hydraulic rod (95).

10. An experimental apparatus for testing the thermal shock resistance of a protective coating according to any one of claims 1-9, characterized in that, The turntable (4) has multiple weight-reducing holes (42).

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