Oxyacetylene overload ablation testing device and method

Abstract

The invention provides an oxyacetylene overload ablation testing device and method, and belongs to the field of rocket engine testing. The device comprises a testboard, an oxygen cylinder, an acetylene cylinder, a spray gun assembly and a clamping assembly, the oxygen cylinder, the acetylene cylinder, the spray gun assembly and the clamping assembly are arranged on the testboard, the spray gun assembly comprises a spray gun pipe and a spray gun head, the spray gun pipe is arranged on the testboard in the first direction, and the spray gun head is arranged at the end of the spray gun pipe; the spray gun head is respectively communicated with the oxygen cylinder and the acetylene cylinder, the spray gun head is arranged towards the clamping assembly, and the sample is arranged on the clamping assembly. By adopting the oxyacetylene overload ablation testing device and method provided by the embodiment of the invention, the problem of low safety caused by manual holding of a spray gun in the prior art can be solved.

Description

Technical Field

[0001] This invention relates to the field of rocket engine testing, and in particular to an oxyacetylene overload ablation testing device and method. Background Technology

[0002] With the rapid development of the aerospace industry and weaponry, various attitude control engine products have emerged. The combustion chamber shell is a crucial component, characterized by its complex structure and high production cost. To meet technical requirements such as lightweight, long service life, and ablation resistance, titanium alloys are widely used in their production. However, during rocket launches, the extreme temperatures and high-speed jets cause titanium alloys to undergo severe oxidation, microstructural degradation, and mass loss, leading to material failure and threatening structural safety. Therefore, overload ablation tests on titanium alloy samples are necessary.

[0003] In existing technologies, oxyacetylene is typically used to perform overload ablation tests on samples. During the test, the operator holds an oxyacetylene spray gun in one hand and clamps the product sample with pliers in the other, and uses the acetylene spray gun to heat the product sample.

[0004] Existing overload ablation testing methods rely on manual handheld spray gun heating. During use, if the flame propagation speed exceeds the gas ejection speed, a "backfire" phenomenon may occur (the flame burns back into the spray gun or gas pipe), which can lead to an explosion in severe cases. Furthermore, the spray gun flame temperature can reach over 3000℃, making it easy for operators to be burned by the high-temperature flame or metal splashes, resulting in low safety. Summary of the Invention

[0005] This invention provides an oxyacetylene overload ablation testing device and method, which solves the safety problem caused by manually holding a spray gun in the prior art. The technical solution is as follows: In a first aspect, an oxyacetylene overload ablation testing device is provided for testing samples, comprising: a test stand, an oxygen cylinder, an acetylene cylinder, a spray gun assembly, and a clamping assembly. The oxygen cylinder, acetylene cylinder, spray gun assembly, and clamping assembly are arranged on the test bench. The spray gun assembly includes a spray gun tube and a spray gun head. The spray gun tube is arranged on the test bench along a first direction. The spray gun head is located at the end of the spray gun tube. The spray gun head is connected to the oxygen cylinder and the acetylene cylinder respectively. The spray gun head is arranged towards the clamping assembly. The sample is placed on the clamping assembly.

[0006] Optionally, the clamping assembly includes a base plate and a sample holder. The base plate is disposed on the test stage, and the bottom of the sample holder is hinged to the base plate. A damping bearing is provided at the hinge. The sample is disposed on the side of the sample holder near the spray gun head.

[0007] Optionally, both the sample and the sample holder are arc-shaped components, and the sample holder has a mounting groove, in which the sample is placed.

[0008] Optionally, the clamping assembly further includes a support plate, which is vertically disposed on the side of the sample holder away from the spray gun head, and the top of the support plate abuts against the side of the sample holder away from the spray gun head.

[0009] Optionally, the support plate is provided with a first threaded hole, and the base plate is provided with a plurality of second threaded holes that match the first threaded hole at intervals along the first direction.

[0010] Optionally, the test bench is provided with a guide rail arranged along the first direction. The guide rail is located on both sides of the base plate. The base plate is slidably mounted on the guide rail. The base plate is provided with third threaded holes on both sides. The guide rail is provided with multiple fourth threaded holes that match the third threaded holes on both sides. The multiple fourth threaded holes are arranged at intervals along the first direction.

[0011] Optionally, a first control valve is provided at the outlet of the oxygen cylinder, and a second control valve is provided at the outlet of the acetylene cylinder.

[0012] Optionally, it also includes a control module, wherein both the first control valve and the second control valve are electronic valves, and both the first control valve and the second control valve are signal-connected to the control module.

[0013] Optionally, a motor is provided at the bottom of the test platform to drive the test platform to rotate. Support platforms are arranged parallel to each other at intervals at the bottom of the test platform, and rollers are rotatably provided on the support platforms, with the rollers abutting against the bottom of the test platform.

[0014] Secondly, an oxyacetylene overload ablation test method, comprising the aforementioned oxyacetylene overload ablation test apparatus, further comprising the following steps: Step 1: Fix the oxygen cylinder and acetylene cylinder on the test bench, measure the weight, thickness and back wall temperature of the sample, and fix the sample on the clamping assembly; Step 2: Open the oxygen cylinder and acetylene cylinder, and ignite the oxygen and acetylene into the spray gun head; Step 3: After burning the sample with a flame for ten minutes, remove the sample and measure its weight, thickness and back wall temperature again. Compare the measured data with the data before the test to determine the sample's ablation resistance.

[0015] The beneficial effects of the technical solutions provided in the embodiments of the present invention include at least the following: This invention provides an oxyacetylene overload ablation testing device and method. A spray gun assembly and a clamping assembly are fixedly mounted on a test bench. Oxygen and acetylene cylinders, being consumables, are detachably mounted on the test bench, and their outlets are connected to the spray gun head. The sample is then fixed to the side of the clamping assembly near the spray gun head. Since the spray gun head faces the clamping assembly, when the spray gun assembly is activated, the spray gun tube ignites, causing the fused gas inside the spray gun head to combust and be ejected, performing an overload ablation test on the sample. Because this device eliminates the need for manual handling of the spray gun to heat the sample, it ensures the safety of the testing personnel and effectively solves the problem of low safety caused by manual handling of the spray gun in existing technologies. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall structure of another perspective device provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the test bench structure provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the clamping component structure provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of signal transmission provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the method flow provided in an embodiment of the present invention.

[0018] In the diagram: 101-Sample; 1-Test stand; 11-Guide rail; 12-Oxygen cylinder mounting bracket; 13-Acetylene cylinder mounting bracket; 2-Oxygen cylinder; 21-First control valve; 3-Acetylene cylinder; 31-Second control valve; 4-Spray gun assembly; 41-Spray gun tube; 42-Spray gun head; 5-Clamping assembly; 51-Base plate; 52-Sample holder; 521-Mounting slot; 53-Support plate; 61-First threaded hole; 62-Second threaded hole; 63-Third threaded hole; 64-Fourth threaded hole; 7-Control module; 8-Motor; 9-Support platform; 91-Roller. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the overall structure of the device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall structure of another perspective device provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the test bench structure provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the clamping component structure provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of signal transmission provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the method flow provided in an embodiment of the present invention. An oxyacetylene overload ablation testing device is used to test a sample 101, comprising: a test platform 1, an oxygen cylinder 2, an acetylene cylinder 3, a spray gun assembly 4, and a clamping assembly 5. The oxygen cylinder 2, acetylene cylinder 3, spray gun assembly 4, and clamping assembly 5 are disposed on the test platform 1. The spray gun assembly 4 includes a spray gun tube 41 and a spray gun head 42. The spray gun tube 41 is disposed on the test platform 1 along a first direction. The spray gun head 42 is disposed at the end of the spray gun tube 41 and is connected to both the oxygen cylinder 2 and the acetylene cylinder 3. The spray gun head 42 is positioned towards the clamping assembly 5, and the sample 101 is disposed on the clamping assembly 5.

[0021] For example, in this embodiment of the invention, the first direction is a horizontal direction parallel to the test bench 1. Figure 3 The middle arrow A indicates the first direction. An oxygen cylinder fixing bracket 12 and an acetylene cylinder fixing bracket 13 are provided on the test bench 1. The oxygen cylinder 2 is detachably connected to the oxygen cylinder fixing bracket 12, and the acetylene cylinder 3 is detachably connected to the acetylene cylinder fixing bracket 13, facilitating the replacement of the oxygen cylinder 2 and acetylene cylinder 3. Furthermore, the acetylene cylinder 3 can be replaced with other combustible gas cylinders to conduct overload ablation tests on other combustible gases, thereby improving the applicability of the device. The spray gun assembly 4 is fixedly mounted on the test bench 1, providing stable support for the spray gun tube 41 and the spray gun head 42, enabling the spray gun head 42 to provide a stable combustion flame. The clamping assembly 5 provides stable support for the sample 101. The clamping assembly 5 can adopt various structural forms; any structure that can adapt to the sample 101 and fix the sample 101 in a certain posture on the test bench 1 can be used as the clamping assembly 5 in this embodiment. Compared to traditional technologies that require manual hand-held spray gun heating of sample 101, this embodiment fixes the spray gun assembly 4 and sample 101 on the test bench 1, and can be equipped with a remote ignition device to remotely control the start of the spray gun assembly 4, and can also be equipped with an electronic valve to remotely control the oxygen cylinder 2 and acetylene cylinder 3 to supply the spray gun head 42. This allows the staff to conduct the test away from the test site, thus ensuring the personal safety of the test personnel.

[0022] This invention provides an oxyacetylene overload ablation test apparatus and method. A spray gun assembly 4 and a clamping assembly 5 are fixedly mounted on a test bench 1. Oxygen cylinders 2 and acetylene cylinders 3 are consumables and are detachably mounted on the test bench 1. The outlets of the oxygen cylinders 2 and acetylene cylinders 3 are connected to the spray gun head 42. The sample 101 is then fixed to the side of the clamping assembly 5 near the spray gun head 42. Since the spray gun head 42 faces the clamping assembly 5, when the spray gun assembly 4 is activated, the spray gun tube 41 ignites, causing the fused gas inside the spray gun head 42 to combust and be ejected, performing an overload ablation test on the sample 101. Because this apparatus eliminates the need for manual hand-held spray gun heating of the sample 101, it ensures the safety of the testing personnel and effectively solves the problem of low safety caused by manual hand-held spray guns in existing technologies.

[0023] Optionally, the clamping assembly 5 includes a base plate 51 and a sample holder 52. The base plate 51 is set on the test stage 1, and the bottom of the sample holder 52 is hinged to the base plate 51. A damping bearing is provided at the hinge. The sample 101 is set on the side of the sample holder 52 near the spray gun head 42.

[0024] Exemplary, in embodiments of the present invention, such as Figure 4 As shown, when sample 101 is placed on sample holder 52, the bottom of holder 52 is hinged to base plate 51, allowing adjustment of sample 101's orientation. This enables spray nozzle 42 to heat sample 101 at different angles, simulating the actual working conditions of sample 101. Overload ablation tests are conducted on sample 101 from different angles to evaluate its ablation resistance, thereby improving the accuracy of sample evaluation. By incorporating damping bearings at the hinge, sample holder 52 can be fixed at different tilt angles, preventing changes in tilt angle due to its own weight during testing.

[0025] Optionally, both sample 101 and sample holder 52 are arc-shaped parts, and sample holder 52 is provided with mounting groove 521, in which sample 101 is placed.

[0026] Exemplary, in embodiments of the present invention, such as Figure 4 As shown, sample 101 is typically a scaled-down semi-cylindrical part with a diameter of 10-20 mm and a thickness of 2-3 mm. In practical applications, sample 101 is usually an arc-shaped part, so the sample holder 52 is also designed with an arc-shaped structure, so that the arc surface of sample 101 fits with the arc surface of sample holder 52, thereby increasing the contact area between sample 101 and sample holder 52, making the connection between sample 101 and sample holder 52 more stable. The mounting groove 521 is formed by flanges on both sides and bottom of sample holder 52, so that sample 101 is embedded in sample holder 52 through the flanges, thereby improving the stability of the connection between sample 101 and sample holder 52.

[0027] Optionally, the clamping assembly 5 also includes a support plate 53, which is vertically disposed on the side of the sample holder 52 away from the spray gun head 42, and the top of the support plate 53 abuts against the side of the sample holder 52 away from the spray gun head 42.

[0028] Exemplary, in embodiments of the present invention, such as Figure 3 and Figure 4 As shown, by setting the support plate 53, when the sample holder 52 is arranged at an angle, the top surface of the support plate 53 abuts against the arc surface of the sample holder 52, thereby providing bottom support for the sample holder 52, so that the sample 101 is more stably fixed in the sample holder 52 and prevents the sample 101 from shifting during the test.

[0029] Optionally, the support plate 53 is provided with a first threaded hole 61, and the base plate 51 is provided with a plurality of second threaded holes 62 that match the first threaded hole 61 at intervals along the first direction.

[0030] Exemplary, in embodiments of the present invention, such as Figure 3 and Figure 4 As shown, by setting screws to pass through both the first threaded hole 61 and the second threaded hole 62 for threaded connection, the support plate 53 can be fixed on the base plate 51. By setting multiple second threaded holes 62, the first threaded hole 61 can be fixed with different second threaded holes 62, thereby adjusting the position of the support plate 53 fixed on the base plate 51, so that the support plate 53 can provide bottom support for the sample holder 52 when the sample holder 52 is at different tilt angles.

[0031] Optionally, the test bench 1 is provided with a guide rail 11 arranged along the first direction. The guide rail 11 is located on both sides of the base plate 51. The base plate 51 is slidably mounted on the guide rail 11. The base plate 51 is provided with third threaded holes 63 on both sides. The guide rail 11 is provided with multiple fourth threaded holes 64 that match the third threaded holes 63 on both sides. The multiple fourth threaded holes 64 are arranged at intervals along the first direction.

[0032] Exemplary, in embodiments of the present invention, such as Figure 3 and Figure 4 As shown, guide rails 11 are arranged on both sides of the base plate 51, providing guidance for the sliding of the base plate 51. The bottom width of the support plate 53 is the same as the width of the inner wall of the guide rail, thus providing guidance for the sliding of the support plate 53. By passing screws through the third threaded hole 63 and the fourth threaded hole 64 simultaneously, the base plate 51 and the guide rail 11 can be fixed, that is, the base plate 51 is fixed on the test stage 1. By providing multiple fourth threaded holes 64, the base plate 51 can slide along the guide rail 11 and then be fixed, thereby adjusting the distance between the sample 101 and the spray gun head 42, thereby adjusting the heating temperature of the sample and improving the adjustability of the device.

[0033] Optionally, a first control valve 21 is provided at the outlet of oxygen cylinder 2, and a second control valve 31 is provided at the outlet of acetylene cylinder 3.

[0034] Exemplary, in embodiments of the present invention, such as Figure 3 As shown, the flow rate of oxygen released from cylinder 2 can be controlled by setting the first control valve 21, and the flow rate of acetylene released from cylinder 3 can be controlled by setting the second control valve 31. This controls the mixing ratio of oxygen and acetylene within the nozzle head 42, thereby controlling the characteristics of the flame. When the oxygen-to-acetylene mixture ratio is 1:1, the flame emitted from the nozzle head 42 is a neutral flame, clearly defined and composed of three parts: the innermost bright white cone, which is the area where acetylene and oxygen partially burn; the pale blue area next to the flame core, which is difficult to see and has the highest temperature and reducing properties; and the outermost pale blue flame, which completely burns with oxygen in the air. At this time, the highest flame temperature is located at the end of the inner flame, approximately 3100°C-3200°C. When the amount of acetylene is greater than the amount of oxygen, the flame core is white and its outline is indistinct, with a blue "feather-like" acetylene-rich area around it. The flame as a whole is longer and softer than a neutral flame. At this time, the flame temperature is lower, approximately 2700°C-3000°C. When the oxygen content is greater than the acetylene content, the flame core is short and pointed, bluish-white in color, and the entire flame is short and rapid, emitting a hissing sound during combustion. At this point, the flame temperature is at its highest, reaching 3300°C-3500°C. By controlling the mixing ratio of oxygen and acetylene within the nozzle 42, the flame characteristics can be controlled, thereby enabling different test results and further improving the adjustability of the device.

[0035] Optionally, it also includes a control module 7, where the first control valve 21 and the second control valve 31 are both electronic valves, and both the first control valve 21 and the second control valve 31 are signal connected to the control module 7.

[0036] Exemplary, in embodiments of the present invention, such as Figure 5 As shown, by setting up control module 7, the first control valve 21 and the second control valve 31 can be remotely controlled, allowing the staff to control them away from the test bench 1, further ensuring the safety of the staff.

[0037] Optionally, a motor 8 is provided at the bottom of the test bench 1, which is used to drive the test bench 1 to rotate. Support platforms 9 are arranged parallel to each other at the bottom of the test bench 1. Rollers 91 are rotatably provided on the support platforms 9, and the rollers 91 abut against the bottom of the test bench 1.

[0038] Exemplary, in embodiments of the present invention, such as Figure 1 and Figure 2As shown, the output shaft of motor 8 transmits kinetic energy through gears and gear shafts, and finally connects to the center of test bench 1. Starting motor 8 enables test bench 1 to rotate around its center. Support platform 9 and rollers 91 provide auxiliary support to the bottom of test bench 1. This structure allows sample 101 to simulate a high-overload environment of centrifugal motion, thereby assessing the integrity and reliability of sample 101 under centrifugal force, and simultaneously testing the sealing and pressure resistance of sample 101, thus improving the testing range of this testing device.

[0039] An oxyacetylene overload ablation test method includes the aforementioned oxyacetylene overload ablation test device, and further includes the following steps: S1: Fix oxygen cylinder 2 and acetylene cylinder 3 on test stage 1, measure the weight, thickness and back wall temperature of sample 101, and fix sample 101 on clamping assembly 5; S2: Open oxygen cylinder 2 and acetylene cylinder 3, introduce oxygen and acetylene into spray gun head 42 and ignite; S3: After continuous flame burning for ten minutes, remove sample 101, measure the weight, thickness and back wall temperature of sample 101 again, and compare it with the data before the test to determine the ablation resistance of sample 101.

[0040] Exemplarily, in this embodiment of the invention, before testing, the weight, thickness, and back wall temperature of sample 101 are measured. Then, sample 101 is placed in the mounting groove 521 for fixation. The control module 7 controls the first control valve 21 to set the oxygen flow rate to 1512 L / h and the pressure to 0.44 MPa; and controls the second control valve 31 to set the acetylene flow rate to 1116 L / h and the pressure to 0.095 MPa. At this time, the flame heat flux density is 4186.8. 418.68kW / m 2 The nozzle diameter is 2mm. The spray gun assembly 4 is ignited, and the flame from the spray gun head 42 burns the sample 101. After burning for ten minutes, the sample 101 is removed, and its weight, thickness, and back wall temperature are measured again and compared with the data before the test to determine the ablation resistance of the sample 101. Another sample 101 from the same batch is selected. Its weight, thickness, and back wall temperature are measured again. The angle of the sample holder 52 is adjusted, and the sample 101 is fixed on the sample holder 52. Steps S2 and S3 are repeated. The same batch of samples is selected again. Its weight, thickness, and back wall temperature are measured again. The sample 101 is fixed on the sample holder 52, and the motor 8 is started to rotate the test stage 1. Steps S2 and S3 are repeated.

[0041] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a quantity limitation, but rather indicate the presence of at least one. The terms “comprising” or “including” and similar terms mean that the elements or objects preceding “comprising” or “including” encompass the elements or objects listed following “comprising” or “including” and their equivalents, and do not exclude other elements or objects. The terms “connected” or “linked” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] The above description is merely an optional embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An oxyacetylene overload ablation testing device for testing a sample (101), characterized in that, include: Test stand (1), oxygen cylinder (2), acetylene cylinder (3), spray gun assembly (4) and clamping assembly (5). The oxygen cylinder (2), acetylene cylinder (3), spray gun assembly (4) and clamping assembly (5) are arranged on the test bench (1). The spray gun assembly (4) includes a spray gun tube (41) and a spray gun head (42). The spray gun tube (41) is arranged on the test bench (1) along a first direction. The spray gun head (42) is arranged at the end of the spray gun tube (41). The spray gun head (42) is connected to the oxygen cylinder (2) and the acetylene cylinder (3) respectively. The spray gun head (42) is arranged towards the clamping assembly (5). The sample (101) is arranged on the clamping assembly (5).

2. The oxyacetylene overload ablation testing device according to claim 1, characterized in that, The clamping assembly (5) includes a base plate (51) and a sample holder (52). The base plate (51) is mounted on the test stage (1). The bottom of the sample holder (52) is hinged to the base plate (51). A damping bearing is provided at the hinge. The sample (101) is mounted on the side of the sample holder (52) near the spray gun head (42).

3. The oxyacetylene overload ablation test apparatus according to claim 2, characterized in that, Both the sample (101) and the sample holder (52) are arc-shaped parts. The sample holder (52) has an installation groove (521) and the sample (101) is placed in the installation groove (521).

4. The oxyacetylene overload ablation test apparatus according to claim 2, characterized in that, The clamping assembly (5) further includes a support plate (53), which is vertically disposed on the side of the sample holder (52) away from the spray gun head (42), and the top of the support plate (53) abuts against the side of the sample holder (52) away from the spray gun head (42).

5. The oxyacetylene overload ablation test apparatus according to claim 4, characterized in that, The support plate (53) is provided with a first threaded hole (61), and the base plate (51) is provided with a plurality of second threaded holes (62) that match the first threaded hole (61) at intervals along the first direction.

6. The oxyacetylene overload ablation test apparatus according to claim 1, characterized in that, The test bench (1) is provided with a guide rail (11) arranged along the first direction. The guide rail (11) is located on both sides of the base plate (51). The base plate (51) is slidably arranged on the guide rail (11). The base plate (51) is provided with a third threaded hole (63) on both sides. The guide rail (11) is provided with a plurality of fourth threaded holes (64) that match the third threaded holes (63) on both sides. The plurality of fourth threaded holes (64) are arranged at intervals along the first direction.

7. The oxyacetylene overload ablation testing device according to claim 1, characterized in that, The oxygen cylinder (2) is provided with a first control valve (21) at its outlet, and the acetylene cylinder (3) is provided with a second control valve (31) at its outlet.

8. The oxyacetylene overload ablation test apparatus according to claim 7, characterized in that, It also includes a control module (7), where the first control valve (21) and the second control valve (31) are both electronic valves, and both the first control valve (21) and the second control valve (31) are signal connected to the control module (7).

9. The oxyacetylene overload ablation testing device according to claim 1, characterized in that, The test bench (1) is provided with a motor (8) at the bottom, which is used to drive the test bench (1) to rotate. Support platforms (9) are arranged parallel to each other at the bottom of the test bench (1). Rollers (91) are rotatably provided on the support platforms (9), and the rollers (91) abut against the bottom of the test bench (1).

10. A method for testing oxyacetylene overload ablation, comprising the oxyacetylene overload ablation testing apparatus according to any one of claims 1 to 9, characterized in that, It also includes the following steps: Step 1: Fix the oxygen cylinder (2) and acetylene cylinder (3) on the test stand (1), measure the weight, thickness and back wall temperature of the sample (101), and fix the sample (101) on the clamping assembly (5). Step 2: Open the oxygen cylinder (2) and acetylene cylinder (3), and introduce oxygen and acetylene into the spray gun head (42) and ignite them; Step 3: After burning with flame for ten minutes, take out the sample (101), measure the weight, thickness and back wall temperature of the sample (101) again, and compare it with the data before the test to determine the ablation resistance of the sample (101).

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