A continuous multi-time high-temperature high-speed gas scouring ablation test method

Abstract

The application provides a continuous multiple high-temperature high-speed gas scouring and ablation test method, and relates to the field of performance testing. The method adopts a simulation test device, and the simulation test device comprises a test table, a supporting assembly, a fixing assembly and a positioning assembly. The end surface of the test table is sequentially provided with the supporting assembly, the fixing assembly and the positioning assembly from left to right. The specific test steps are as follows: placing and fixing multiple groups of scouring and ablation generators and metal sample pieces, supporting the scouring and ablation generators by the supporting assembly, moving the positioning assembly forward to perform performance testing, moving the positioning assembly backward, rotating the metal sample pieces, moving the positioning assembly forward again to perform secondary performance testing, repeatedly performing multiple performance tests, and sampling and analyzing. The test method can ensure that the scouring and ablation tests of the metal structural parts under the same test conditions are continuously performed under high-temperature high-speed gas, so that the performance of the metal structural parts made of high-toughness steel can be effectively evaluated, and the test efficiency is improved and the test error is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of performance testing, in particular to a continuous multiple high-temperature high-speed gas scouring ablation test method. BACKGROUND

[0002] Steel is the most important, most important and largest quantity of technical material in engineering technology; in the prior art, in order to make the steel structure have some special properties (such as high hardness, high wear resistance, high toughness, corrosion resistance, etc.), one or more alloying elements are usually added on the basis of carbon steel to form alloy steel. High-toughness steel is a metal material with high wear resistance, high toughness, high strength, excellent fatigue resistance and processing performance, etc. formed by injecting alloying elements on the basis of carbon steel.

[0003] At present, high-toughness steel has a wide range of applications in the fields of aerospace, vehicle engineering, special equipment, etc.; in some special fields, metal structural parts prepared by using high-toughness steel (such as gun barrels prepared by using high-toughness steel, etc.) will be subjected to continuous and multiple scouring and ablation of high-temperature and high-speed gas during use, thereby causing defects such as melting, microstructure change and cracking inside the structural parts; therefore, during the design of metal structural parts by using high-toughness steel, it is usually necessary to test and verify the structural parts to evaluate their high-temperature and high-speed gas ablation resistance.

[0004] In the prior art, a semi-closed bomb and other devices are usually used to perform scouring and ablation tests of metal structural parts represented by high-toughness steel; however, the semi-closed bomb and other devices can only complete single scouring and ablation in one test process, and after the test is completed, the sample or the test device needs to be re-adjusted and positioned, which is time-consuming and laborious, and cannot effectively simulate the real working conditions of the metal structural parts (for example, the gun barrel is subjected to continuous and multiple instantaneous scouring and ablation of high-speed propellant gas under the same environment during use, rather than single scouring and ablation), resulting in low guidance of the test results; at the same time, the existing semi-closed bomb and other devices have problems such as change of environmental factors or positioning errors during adjustment and positioning, thereby failing to ensure multiple scouring and ablation under the same environmental factors, and the test results have low accuracy and large errors. SUMMARY

[0005] In view of the problems existing in the prior art, the present application aims to provide a continuous multiple high-temperature high-speed gas scouring ablation test method, which can ensure multiple continuous high-temperature high-speed gas scouring and ablation tests of metal structural parts under the same test conditions, thereby effectively evaluating the performance of metal structural parts made of high-toughness steel, improving test efficiency and reducing test errors.

[0006] The application achieves the objective by the following technical solutions.

[0007] A continuous multiple high-temperature high-speed gas scouring ablation test method adopts a simulation test device, the simulation test device comprises a test table, a supporting assembly, a fixing assembly and a positioning assembly, the test table end face is sequentially provided with the supporting assembly, the fixing assembly and the positioning assembly from left to right, and the supporting assembly and the positioning assembly are respectively in sliding connection with the test table, and the fixing assembly is in fixed connection with the test table.

[0008] The specific test steps are as follows:

[0009] Step one, firstly, a plurality of scouring ablation generators are placed on the fixing assembly, and a metal sample is placed on the positioning assembly, and the scouring ablation generators and the metal sample are respectively clamped and fixed;

[0010] Step two, the supporting assembly is started to move forward (i.e. to move towards the fixed assembly), so that the supporting assembly supports the scouring ablation generator;

[0011] Step three, the positioning assembly is started to move forward (i.e. to move towards the fixed assembly), so that a group of scouring ablation generators correspond to the metal sample, and then the scouring ablation generator is started to test the performance;

[0012] Step four, the positioning assembly is retreated, the metal sample is rotated to correspond to another group of scouring ablation generators, the positioning assembly is re-forwarded, and then the scouring ablation generator is started to test the performance again;

[0013] Step five, step four is repeated until all the scouring ablation generators are tested;

[0014] Step six, the scouring ablation generators and the metal sample are respectively loosened and taken down, and the results are analyzed.

[0015] Based on the further optimization of the above scheme, the support assembly comprises a first mounting seat, a first positioning frame, a support ring and a support rod, the support ring is arranged on the end face of the first mounting seat through the first positioning frame, the first mounting seat is slidingly connected with the test bench, a plurality of support rods are uniformly arranged on the support ring around the central axis thereof; the fixing assembly comprises a fixing seat, a second positioning frame, a fixing ring and a clamping tool, the fixing ring is arranged on the end face of the fixing seat through the second positioning frame, and the fixing seat is fixedly connected with the test bench, a first mounting hole is formed in the fixing ring corresponding to the support rod, and the clamping tool is arranged outside the outer circle of the first mounting hole, and the clamping tools are uniformly distributed around the central axis of the fixing ring; the positioning assembly comprises a second mounting seat, a third positioning frame, a rotating ring and a positioning tool, the rotating ring is arranged on the second mounting seat through the third positioning frame, and the second mounting seat is slidingly connected with the test bench, and the positioning tool is arranged on the rotating ring; the central axes of the support ring, the fixing ring and the rotating ring are collinear, and the inner diameters of the support ring, the fixing ring and the rotating ring are consistent; the erosion and ablation generator is mounted on the clamping tool, and the metal sample is mounted on the positioning tool, and the positioning tool corresponds to the clamping tool (that is, the metal sample on the positioning tool corresponds to the erosion and ablation generator on one of the clamping tools).

[0016] Based on the further optimization of the above scheme, the length of the erosion and ablation generator is 60-300 mm, and the outer diameter is φ20-φ60 mm.

[0017] Based on the further optimization of the above scheme, the number of the first mounting holes is 6-20, that is, the number of the clamping tools is 6-20 groups; the inner diameter of the first mounting hole is φ20.5-φ70 mm.

[0018] Based on the further optimization of the above scheme, the clamping tool adopts two groups of three-limb containment type clamping mechanisms, which are correspondingly arranged on the two sides of the fixing ring, and the three-limb containment type clamping mechanism comprises two arc-shaped fixed blocks, one arc-shaped sliding block, one sliding sleeve, one sliding rod and one group of first springs, the two arc-shaped fixed blocks are fixedly connected with the side wall of the fixing ring and symmetrically arranged about the central axis of the corresponding first mounting hole, the sliding sleeve is slidingly arranged on the side wall of the fixing ring and corresponds to the arc-shaped sliding block of the same group, the sliding rod is slidingly connected with one end of the sliding sleeve close to the arc-shaped sliding block and fixedly connected with the corresponding arc-shaped sliding block at the other end away from the sliding sleeve, and the other end of the sliding rod away from the arc-shaped sliding block is connected with the inner cavity of the corresponding sliding sleeve through the first spring; the sliding sleeves of the two groups of corresponding three-limb containment type clamping mechanisms are connected through connecting rods, and the connecting rods penetrate through the fixing ring, and the fixing ring is provided with a vertical slot corresponding to the connecting rods; a plurality of connecting rods are controlled to slide in the vertical slot through a ring gear, specifically: a ring gear coaxial with the fixing ring is rotationally arranged on one side of the side surface of the fixing ring, and the inner circle of the ring gear is located outside the first mounting hole, arc-shaped grooves are uniformly formed in the ring gear corresponding to the connecting rods, so that the rotation of the ring gear drives the connecting rods to slide along the vertical slot through the sliding sleeves.

[0019] Based on the further optimization of the above scheme, the inner wall of the arc-shaped fixed block and the inner wall of the arc-shaped sliding block are provided with transverse ribs uniformly distributed along the central axis of the fixed ring.

[0020] Based on the further optimization of the above scheme, the rotating ring is rotatably connected with the third positioning frame, specifically, the third positioning frame is composed of two "7" shaped support rods, which are symmetrically arranged on the end face of the second mounting seat, and the two ends of the rotating ring are respectively slidably connected with the end portions of the two "7" shaped support rods away from the second mounting seat; an outer gear ring is arranged on the outer circle of the rotating ring, a first gear is arranged on the end face of the second mounting seat and corresponds to the rotating ring, and the first gear is engaged with the outer gear ring, so that the rotating ring rotates in the third positioning frame.

[0021] Based on the further optimization of the above scheme, the positioning tool includes a clamping mechanism and a positioning mechanism, the rotating ring is provided with a second mounting hole corresponding to the metal sample, the clamping mechanism is arranged on the side surface of the rotating ring close to the fixed ring corresponding to the second mounting hole, and the positioning mechanism is arranged on the side surface of the rotating ring away from the fixed ring corresponding to the second mounting hole; the clamping mechanism includes two arc-shaped fixed blocks, an arc-shaped sliding block, a fixed sleeve, a slide rod and a group of first springs, the two arc-shaped fixed blocks are fixedly connected with the side wall of the rotating ring close to the fixed ring and are symmetrically arranged about the central axis of the second mounting hole, the fixed sleeve is fixedly arranged on the side wall of the rotating ring close to the fixed ring and corresponds to the arc-shaped sliding block, the slide rod is slidably connected with one end of the fixed sleeve close to the arc-shaped sliding block and is fixedly connected with the corresponding arc-shaped sliding block at the other end away from the fixed sleeve, and the other end of the slide rod away from the arc-shaped sliding block is connected with the inner cavity of the fixed sleeve through the first spring; the positioning mechanism includes three groups of positioning block assemblies which are uniformly distributed around the central axis of the second mounting hole, and each positioning block assembly is composed of an arc-shaped support block and a support baffle, the arc-shaped support block is fixedly connected with the side surface of the rotating ring away from the fixed ring, and the support baffle is fixedly arranged at the end of the arc-shaped support block away from the rotating ring.

[0022] Based on the further optimization of the above scheme, the outer diameter of the metal sample is φ18-φ50mm.

[0023] Based on the further optimization of the above scheme, the number of the second mounting holes is 1-4, i.e. the number of the positioning tools is 1-4; and the inner diameter of the second mounting hole is φ20.5-φ55mm.

[0024] Further optimization based on the above scheme, the sliding of the second mounting seat, the rotation of the ring gear is realized through the driving mechanism, the driving mechanism includes screw rod, sliding block, ring top block, driven shaft assembly, second gear and connecting gear; The sliding block is fixedly arranged on the bottom surface of the second mounting seat away from the fixed seat, and the test bench is provided with a first sliding rail corresponding to the sliding block. The screw rod is rotatably arranged in the first sliding rail of the test bench, and the screw rod is parallel to the central axis of the rotating ring. The sliding block is slidably connected in the first sliding rail, and the middle part of the sliding block is penetrated by the screw rod. The sliding block is threadedly connected with the screw rod. The ring top block is fixedly arranged on the side surface of the sliding block close to the fixed ring and outside the outer ring of the screw rod. The driven shaft assembly includes spline shaft, positioning light rod and second spring. The spline shaft is fixedly connected with the positioning light rod, and they are coaxial. The spline shaft is arranged on one side of the screw rod close to the fixed ring. The positioning light rod is rotatably arranged in the middle part of the screw rod away from the spline shaft. The positioning light rod is coaxial with the screw rod. The end of the screw rod close to the spline shaft is provided with a coaxial spline groove outside the outer ring of the positioning light rod. The positioning spline is arranged on the outer wall of the positioning light rod. The positioning spline is connected in the spline groove to realize the simultaneous and same direction rotation of the screw rod, the positioning light rod and the spline shaft. The ring limiting block is fixedly sleeved on the outer wall of the spline shaft close to the ring top block. The connecting gear is rotatably arranged on the fixed seat corresponding to the ring gear, and the connecting gear is engaged with the ring gear. The second gear is arranged on the outer wall of the spline shaft corresponding to the connecting gear, and the second gear is engaged with the connecting gear. The spline hole is arranged in the middle part of the second gear corresponding to the spline of the spline shaft. The spring groove is coaxially arranged on the side of the test bench away from the spline shaft. The second spring is connected between the end of the spline shaft away from the spline shaft and the spring groove. The key groove is arranged in the inner wall of the spring groove corresponding to the spline of the spline shaft.

[0025] Further optimization based on the above scheme, the connecting gear is arranged on the fixed seat through the gear support.

[0026] Further optimization based on the above scheme, the translation speed of the positioning assembly (i.e. the second mounting seat) in step four is 10-80 mm / s, and the rotation speed of the metal sample (i.e. the rotating ring) is 10° / s-30° / s. The distance of the positioning assembly (i.e. the second mounting seat) in step four is 20-100 mm.

[0027] The following is the technical effect of the present application:

[0028] The application cooperates the support assembly, the fixing assembly and the positioning assembly with high rigidity and high precision, supports the erosion ablation generator in the fixing assembly by the support rod of the support assembly, avoids the problem that the erosion ablation generator deviates due to the reaction force generated by high-temperature high-speed combustion gas in the test process, clamps and fixes the erosion ablation generator by the three-labia containing type clamping mechanism of the fixing assembly, can realize stable clamping of multiple erosion ablation generators at the same time, improves clamping efficiency, ensures uniform distribution of multiple erosion ablation generators around the same central axis at the same time, and then ensures subsequent continuous multiple erosion and ablation tests, avoids the problem of needing to reposition or adjust, realizes clamping and fixing of the metal sample by the positioning tool of the positioning assembly, thereby effectively ensuring the stability of the metal sample, and ensures that the metal sample can correspond to different erosion ablation generators by rotating around the axis of the rotating ring, so that continuous multiple erosion and ablation tests can be completed without the need for re-clamping, positioning, installation and other operations, and the real use condition of the metal sample is effectively simulated.

[0029] Meanwhile, the test method of the application is convenient to operate, the whole simulation test device is simple in structure, does not need a complex installation process, can realize stable installation and disassembly of the erosion ablation generator and the metal sample, effectively improves test efficiency, avoids changes in experimental environment caused by increased test time, and at the same time, the application can realize continuous multiple erosion and ablation tests after one-time installation and positioning, avoids problems such as beat interruption and error caused by test re-adjustment, installation and positioning, and ensures the accuracy of test results. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the simulation test device in the embodiment of the application.

[0031] Figure 2 It is a sectional view of the whole simulation test device in the embodiment of the application.

[0032] Figure 3 It is Figure 2 the local enlarged view of A.

[0033] Figure 4 It is Figure 2 the local enlarged view of B.

[0034] Figure 5 It is Figure 2 the sectional view of C-C of D.

[0035] Figure 6 It is Figure 5 the local enlarged view of G.

[0036] Figure 7 It is Figure 5 the local enlarged view of H.

[0037] Figure 8 For Figure 2 Close-up view of D.

[0038] Figure 9 For Figure 2 Close-up view of E.

[0039] Figure 10 For Figure 2 View of F.

[0040] Wherein, 10, test bench; 11, first slide rail; 12, spring groove; 21, first mounting seat; 22, first positioning frame; 23, support ring; 24, support rod; 30, erosion ablation generator; 31, fixed seat; 32, second positioning frame; 33, fixed ring; 331, first mounting hole; 332, vertical groove; 340, connecting rod; 341, arc-shaped fixed block; 342, arc-shaped sliding block; 343, sliding sleeve; 344, slide rod; 345, first spring; 35, ring gear; 351, arc-shaped groove; 352, connecting gear; 353, second gear; 3530, spline hole; 40, metal sample; 41, second mounting seat; 42, third positioning frame; 43, rotating ring; 431, second mounting hole; 432, external tooth ring; 441, fixed sleeve; 442, arc-shaped support block; 443, support baffle; 45, first gear; 451, motor; 452, rotating seat; 51, screw rod; 52, sliding block; 53, annular top block; 541, spline shaft; 5410, annular limiting block; 542, positioning light rod; 5420, positioning spline; 543, second spring. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0042] Embodiment 1:

[0043] A continuous multiple high-temperature high-speed gas erosion ablation test method, which adopts a simulation test device, the simulation test device includes a test bench 10, a support assembly, a fixing assembly and a positioning assembly, the end face of the test bench 10 is sequentially provided with the support assembly, the fixing assembly and the positioning assembly from left to right (as shown in Figure 1 , and the support assembly and the positioning assembly are respectively in sliding connection with the test bench 10 (that is, the first mounting seat 21 of the support assembly is in sliding connection with the test bench 10, and the second mounting seat 41 of the positioning assembly is in sliding connection with the test bench 10), and the fixing assembly is in fixed connection with the test bench 10 (that is, the fixed seat 31 of the fixing assembly is in fixed connection with the test bench 10 through a fixing bolt).

[0044] The support assembly comprises a first mounting base 21, a first positioning frame 22, a support ring 23 and a support rod 24. The support ring 23 is arranged on the end face of the first mounting base 21 through the first positioning frame 22 (fixed) (see Figure 1 The support ring 23 is fixedly arranged with a first positioning frame 22 at both ends of the outer wall, and the bottom end of the first positioning frame 22 is fixedly connected with the end face of the first mounting base 21. The first mounting base 21 is slidably connected with the test bench 10 (a second sliding rail is formed on the end face of the test bench 10 for the first mounting base 21, and the second sliding rail is located away from the first sliding rail 11 of the second mounting base 21) (see Figure 1 In this embodiment, two second sliding rails are formed on the end face of the test bench 10 corresponding to the first mounting base 21, and the two second sliding rails are correspondingly arranged about the first sliding rail 11), and a plurality of support rods 24 are uniformly arranged on the support ring 23 about the central axis of the support ring 23 (as Figure 1 The support ring 23 is fixedly arranged with a first positioning frame 22 at both ends of the outer wall, and the bottom end of the first positioning frame 22 is fixedly connected with the end face of the first mounting base 21. The first mounting base 21 is slidably connected with the test bench 10 (a second sliding rail is formed on the end face of the test bench 10 for the first mounting base 21, and the second sliding rail is located away from the first sliding rail 11 of the second mounting base 21) (see

[0045] The fixing assembly comprises a fixing base 31, a second positioning frame 32, a fixing ring 33 and a clamping tool. The fixing ring 33 is arranged on the end face of the fixing base 31 through the second positioning frame 32 (see Figure 1 The fixing ring 33 is fixedly arranged with a second positioning frame 32 at both ends of the outer wall, and the bottom end of the second positioning frame 32 is fixedly connected with the end face of the fixing base 31. The fixing base 31 is fixedly connected with the test bench 10 (the fixing base 31 is fixedly connected with the test bench 10 through fastening bolts, etc.), the fixing ring 33 is provided with a first mounting hole 331 corresponding to the support rod 24, and the clamping tool is arranged on the outer circle of the first mounting hole 331. The clamping tool is uniformly distributed about the central axis of the fixing ring 33. The inner diameter of the first mounting hole 331 is φ20.5-φ70mm (φ41mm is preferred in this embodiment). The number of first mounting holes 331 is 6-20, that is, the number of clamping tools is 6-20 (as Figure 1 The number of clamping tools in this embodiment is 8, and the number of support rods 24 is also 8, which can be arranged according to actual conditions). The clamping tool adopts two sets of three-labial containment type clamping mechanisms, which are correspondingly arranged on both sides of the fixing ring 33 (first mounting hole 331) (i.e. left and right sides of the fixing ring 33 shown in Figure 2 The fixing ring 33), which comprises two arc-shaped fixed blocks 341, an arc-shaped sliding block 342, a sliding sleeve 343, a sliding rod 344 and a set of first springs 345 (as shown in Figure 3 、 Figure 5 And Figure 7 The two arc-shaped fixed blocks 341 are fixedly connected with the side wall of the fixing ring 33 through fastening screws, and the two arc-shaped fixed blocks 341 are symmetrically arranged about the central axis of the corresponding first mounting hole 33 (as Figure 7 The sliding sleeve 343 is slidably arranged on the side wall of the fixing ring 33 (seeFigure 3 If the annular gear 35 is not present between the sliding sleeve 343 and the fixed ring 33, the sliding sleeve 343 is in sliding connection with the sidewall of the fixed ring 33; if the annular gear 35 is present between the sliding sleeve 343 and the fixed ring 33, the sliding sleeve 343 is in relative sliding with the fixed ring 33, and the sliding sleeve 343 corresponds to the arc-shaped sliding block 342 in the same group, and the slide rod 344 is in sliding connection with the sliding sleeve 343 at one end close to the arc-shaped sliding block 342 (combined with Figure 3 As shown in Figure 7 , that is, a telescopic groove is formed in the middle of the one end of the sliding sleeve 343 close to the arc-shaped sliding block 342, and the slide rod 344 is slidingly connected in the telescopic groove) and the other end of the slide rod 344 away from the sliding sleeve 343 is fixedly connected with the corresponding arc-shaped sliding block 342, and the other end of the slide rod 344 away from the arc-shaped sliding block 342 is connected with the inner cavity (that is, the top of the telescopic groove) of the corresponding sliding sleeve 343 through the first spring 345; the sliding sleeves 343 of the two groups of corresponding three-petal containment type clamping mechanisms are connected through the connecting rods 340, and the connecting rods 340 penetrate the fixed ring 33, and the fixed ring 33 is provided with a vertical groove 332 (see Figure 3 ) corresponding to the connecting rod 340; a plurality of connecting rods 340 are controlled to slide in the vertical groove 332 through the annular gear 35, specifically: the annular gear 35 is rotatably arranged on the side surface of the fixed ring 33 coaxially with the fixed ring 33 (that is, the inner circle of the annular gear 35 is located outside the first mounting hole 331, that is, the inner diameter of the annular gear 35 is greater than the outer diameter of the ring formed by the first mounting hole 331, see Figure 5 ) and the annular gear 35 can be rotatably connected with the fixed ring 33 through the rotating supports uniformly distributed on the outer wall of the fixed ring 33 (the specific connection form between the annular gear 35 and the fixed ring 33 can be adjusted according to the actual situation, which is not limited too much in the embodiment), and the annular gear 35 is uniformly provided with an arc-shaped groove 351 corresponding to the connecting rod 340, so that the connecting rod 340 drives the sliding sleeve 343 to slide along the vertical groove 332 through the rotation of the annular gear 35. The inner wall of the arc-shaped fixed block 341 and the inner wall of the arc-shaped sliding block 342 are provided with transverse ribs uniformly distributed along the central axis of the fixed ring 33 (the transverse ribs can be made of the same material as the clamping tool, which is not limited too much in the embodiment), which increases the clamping force of the arc-shaped fixed block 341 and the arc-shaped sliding block 342 on the erosion-ablation generator 30 and the friction force between them, avoiding displacement of the erosion-ablation generator 30 due to the reaction force of the flame flow during the test, thereby avoiding test failure or safety hazards and other problems.

[0046] The positioning assembly comprises a second mounting base 41, a third positioning frame 42, a rotating ring 43 and a positioning tool. The rotating ring 43 is arranged on the second mounting base 41 through the third positioning frame 42, and the second mounting base 41 is in sliding connection with the test bench 10. The rotating ring 43 is in rotational connection with the third positioning frame 42. Specifically, the third positioning frame 42 is composed of two “7”-shaped supporting rods, which are symmetrically arranged on the end face of the second mounting base 41 (as shown in Figure 1 ). The two ends of the rotating ring 43 are respectively in sliding and clamping connection with the end portions of the two “7”-shaped supporting rods away from the second mounting base 41 (for example, annular ring grooves are respectively formed in the outer circles of the two side walls of the rotating ring 43, and clamping blocks corresponding to the annular ring grooves are respectively arranged on the end portions of the two “7”-shaped supporting rods away from the second mounting base 41, and the clamping blocks are respectively in sliding connection with the annular ring grooves). An outer tooth ring 432 is arranged on the outer circle of the rotating ring 43. A first gear 45 is arranged on the end face of the second mounting base 41 corresponding to the rotating ring 43. The first gear 45 is in meshing connection with the outer tooth ring 432 (as shown in Figure 1 ), so as to realize the rotation of the rotating ring 43 in the third positioning frame 42. In addition, the first gear 45 is driven to rotate by a motor 451 fixedly arranged on the end face of the second mounting base 41. Specifically, the motor 451 is fixedly arranged on the end face of the second mounting base 41 through a motor support. The first gear 45 is fixedly sleeved on the outer wall of the output shaft of the motor 451. The end of the output shaft of the motor 451 away from the motor 451 is in connection with a rotating seat 452 fixedly arranged on the end face of the second mounting base 41 (as shown in Figure 2 ). The rotating ring 43 is provided with a positioning tool. The positioning tool comprises a clamping mechanism and a positioning mechanism. The second mounting hole 431 is arranged on the rotating ring 43 corresponding to the metal sample 40. The clamping mechanism is arranged on the side face of the rotating ring 43 close to the fixed ring 33 corresponding to the second mounting hole 431. The positioning mechanism is arranged on the side face of the rotating ring 43 away from the fixed ring 33 corresponding to the second mounting hole 431 (as shown in Figure 4 ). The inner diameter of the second mounting hole 430 is φ20.5-φ55mm (preferably φ35mm in the embodiment). Figure 4As shown: the clamping mechanism includes two arc-shaped fixed blocks 341, an arc-shaped sliding block 342, a fixed sleeve 441, a sliding rod 344 and a set of first springs 345 (wherein the arc-shaped fixed blocks 341, the arc-shaped sliding block 342, the sliding rod 344, the first springs 345 and the structures in the clamping tool are consistent), the two arc-shaped fixed blocks 341 are fixedly connected to the side wall of the rotating ring 43 close to the fixed ring 33 through fastening screws, and the two arc-shaped fixed blocks 341 are symmetrically arranged about the axis of the second mounting hole 431, the fixed sleeve 441 is fixedly arranged on the side wall of the rotating ring 43 close to the fixed ring 33, and the fixed sleeve 441 corresponds to the arc-shaped sliding block 342, the sliding rod 344 is slidably connected to one end of the fixed sleeve 441 close to the arc-shaped sliding block 342, and the other end of the sliding rod 344 away from the fixed sleeve 441 is fixedly connected to the corresponding arc-shaped sliding block 342, and the other end of the sliding rod 344 away from the arc-shaped sliding block 342 is connected to the inner cavity of the fixed sleeve 441 through the first spring 345; the positioning mechanism includes three sets of positioning block assemblies which are uniformly distributed around the axis of the second mounting hole 431, and the positioning block assemblies are combined Figure 4 and Figure 10 As shown: the positioning block assembly is composed of an arc-shaped support block 442 and a support baffle 443, the arc-shaped support block 442 is fixedly connected to the side surface of the rotating ring 43 away from the fixed ring 33 through fastening screws, and the end of the arc-shaped support block 442 away from the rotating ring 43 is fixedly arranged with the support baffle 443 (the longitudinal section of the arc-shaped support block 442 and the support baffle 443 in the same group is "L" shaped structure, as shown in Figure 4 ). The number of second mounting holes 431 is 1-4, that is, the number of positioning tools is 1-4 (as shown in Figure 10 , the number of positioning tools and the number of second mounting holes 431 in this embodiment are both 1).

[0047] The sliding of the second mounting seat 41 and the rotation of the ring gear 35 are realized through the driving mechanism, and the driving mechanism includes a screw rod 51, a sliding block 52, a ring-shaped top block 53, a driven shaft assembly, a second gear 353 and a connecting gear 352; the sliding block 52 is fixedly arranged on the bottom surface of the end of the second mounting seat 41 away from the fixed seat 31, and the test bench 10 is provided with a first sliding rail 11 corresponding to the sliding block 52 (see Figure 2 ), the screw rod 51 is rotatably arranged in the first sliding rail 11 of the test bench 10, and the screw rod 51 is parallel to the axis of the rotating ring 43, the sliding block 52 is slidably connected in the first sliding rail 11, and the middle part of the sliding block 52 (i.e. the sliding block 52) is penetrated by the screw rod 51, and the sliding block 52 is threadedly connected with the screw rod 51; the ring-shaped top block 53 is fixedly arranged on the side surface (i.e. Figure 2 the left side surface as shown) of the sliding block 52 close to the fixed ring 33; the driven shaft assembly includes a spline shaft 541, a positioning light rod 542 and a second spring 543, the spline shaft 541 is fixedly connected with the positioning light rod 542, and they are coaxial (seeFigure 6 As shown in the left side of the figure, the spline shaft 541 is an axial end structure with transverse splines evenly distributed on the outer wall. The spline shaft 541 is arranged on one side of the screw rod 51 close to the fixed ring 33 (i.e. Figure 2 As shown in the left side of the figure, the spline shaft 541 is an axial end structure with transverse splines evenly distributed on the outer wall. The spline shaft 541 is arranged on one side of the screw rod 51 close to the fixed ring 33 (i.e. Figure 2 As shown in the left side of the figure, the spline shaft 541 is an axial end structure with transverse splines evenly distributed on the outer wall. The spline shaft 541 is arranged on one side of the screw rod 51 close to the fixed ring 33 (i.e. Figure 8 As shown in the left side of the figure, the spline shaft 541 is an axial end structure with transverse splines evenly distributed on the outer wall. The spline shaft 541 is arranged on one side of the screw rod 51 close to the fixed ring 33 (i.e. Figure 8 As shown in the left side of the figure, the spline shaft 541 is an axial end structure with transverse splines evenly distributed on the outer wall. The spline shaft 541 is arranged on one side of the screw rod 51 close to the fixed ring 33 (i.e. Figure 6 As shown in the left side of the figure, the spline shaft 541 is an axial end structure with transverse splines evenly distributed on the outer wall. The spline shaft 541 is arranged on one side of the screw rod 51 close to the fixed ring 33 (i.e. Figure 2 As shown in the left side of the figure, the spline shaft 541 is an axial end structure with transverse splines evenly distributed on the outer wall. The spline shaft 541 is arranged on one side of the screw rod 51 close to the fixed ring 33 (i.e. Figure 9 As shown in the left side of the figure, the spline shaft 541 is an axial end structure with transverse splines evenly distributed on the outer wall. The spline shaft 541 is arranged on one side of the screw rod 51 close to the fixed ring 33 (i.e.

[0048] The middle axis of the support ring 23, the fixing ring 33 and the rotating ring 43 is collinear, and the inner diameters of the support ring 23, the fixing ring 33 and the rotating ring 43 are consistent; the ablation generator 30 is installed on the clamping tool (that is, the ablation generator 30 penetrates through the first mounting hole 331 and is clamped and positioned by the three-limb containing type clamping mechanism on both sides of the first mounting hole 331), the length of the ablation generator 30 is 60-300mm (preferably 150mm in the embodiment), and the outer diameter is φ20-φ60mm (preferably φ40mm in the embodiment). The metal sample 40 is installed on the positioning tool (the metal sample 40 penetrates through the second mounting hole 431 and is supported by the positioning mechanism and clamped and fixed by the clamping mechanism), the outer diameter of the metal sample 40 is φ18-φ50mm (preferably φ34mm in the embodiment), and the positioning tool corresponds to the clamping tool (that is, the metal sample 40 on the positioning tool corresponds to the ablation generator 30 on one of the clamping tools).

[0049] The specific test steps are as follows:

[0050] Step one, first, place multiple groups of ablation generators 30 on the fixing assembly, and place the metal sample 40 on the positioning assembly, and clamp and fix the ablation generator 30 and the metal sample 40 respectively;

[0051] Specifically:

[0052] First, place multiple groups of ablation generators 30 in the corresponding first mounting holes 331 (in the embodiment, the number of ablation generators 30 is 8 groups), and place the metal sample 40 in the corresponding second mounting hole 431 (in the embodiment, the number of metal samples 40 is 1 group), and fix and position the metal sample 40 by the positioning tool (specifically: insert the metal sample 40 into the second mounting hole 431 from the left side to the right side as shown in the figure, until the right end of the metal sample 40 is supported by the support baffle 443 of the positioning mechanism, at this time, the arc-shaped sliding block 342 and the slide rod 344 of the clamping mechanism move towards the fixed sleeve 441 due to the supporting force of the metal sample 40, and the first spring 345 is in a compressed state, realizing the elastic clamping of the clamping mechanism on the metal sample 40). Figure 1 Then, start the screw rod 51 to rotate, and the screw rod 51 drives the second mounting seat 41 to move towards the fixed seat 31 side through the sliding block 52, at this time, since the positioning spline 5420 is clamped in the spline groove, and the spline shaft 541 is Figure 2The left end shown is rotationally connected with the spring groove 12, so that the screw rod 51 rotates while driving the spline shaft 541 to rotate, the spline shaft 541 drives the ring gear 35 to rotate through the second gear 353 and the connecting gear 352, in the process of rotating the ring gear 35, each connecting rod 340 is moved in the vertical groove 332 to the end close to the central axis of the fixed ring 33 through the arc-shaped groove 351, thereby pulling the sliding sleeve 343 to move, the sliding sleeve 343 drives the sliding rod 344 and the arc-shaped sliding block 342 to move, thereby realizing the clamping of the erosion ablation generator 30, after clamping, the sliding block 342 slides in the sliding sleeve 343, the first spring 345 is compressed, and the clamping force on the erosion ablation generator 30 is increased.

[0053] Step two, start the support assembly to move forward (i.e. move towards the fixed assembly), so that the support assembly supports the erosion ablation generator 30;

[0054] Specifically:

[0055] Pause the rotation of the screw rod 51, push the first mounting seat 21 (which can be manually pushed or driven by an electric mechanism, and the electric mechanism is set according to the actual situation), the first mounting seat 21 drives the support ring 23 and the support rod 24 thereon to move towards the side of the fixed ring 33 through the first positioning frame 22, until the support rod 24 abuts against the erosion ablation generator 30 as shown Figure 1 The left end shown is rotationally connected with the spring groove 12, so that the screw rod 51 rotates while driving the spline shaft 541 to rotate, the spline shaft 541 drives the ring gear 35 to rotate through the second gear 353 and the connecting gear 352, in the process of rotating the ring gear 35, each connecting rod 340 is moved in the vertical groove 332 to the end close to the central axis of the fixed ring 33 through the arc-shaped groove 351, thereby pulling the sliding sleeve 343 to move, the sliding sleeve 343 drives the sliding rod 344 and the arc-shaped sliding block 342 to move, thereby realizing the clamping of the erosion ablation generator 30, after clamping, the sliding block 342 slides in the sliding sleeve 343, the first spring 345 is compressed, and the clamping force on the erosion ablation generator 30 is increased.

[0056] Step three, start the positioning assembly to move forward (i.e. move towards the fixed assembly), so that a group of erosion ablation generators 30 correspond to the metal sample 40, and then start the erosion ablation generator 30 to perform performance test;

[0057] Specifically:

[0058] Continue to rotate the screw 51. As the screw 51 continues to rotate, the annular top block 53 approaches the annular limiting block 5410 and presses against the annular limiting block 5410, which moves along with the sliding block 52 towards the side closer to the fixed seat 31. This causes the positioning spline 5420 to disengage from the spline groove, and the spline of the spline shaft 541 to engage in the corresponding keyway of the spring groove 12. At this time, the spline shaft 541 does not rotate due to the limitation of the spring groove 12, and the second spring 543 is gradually compressed. At the same time, the spline shaft 541 hard limits the rotation of the second gear 353, and then uses the connecting gear 352 to hard limit the rotation of the annular gear 35, ensuring that the arc-shaped sliding block 342 is firmly clamped to the erosion generator 30. When the test specimen 40 corresponds to and contacts one of the erosion generators 30 (if the test specimen 40 does not correspond to any of the erosion generators 30 during the movement, the rotating ring 43 is driven to rotate by the motor 451 to ensure that the test specimen 40 corresponds to the erosion generator 30), the screw 51 is stopped from rotating, and the corresponding erosion generator 30 is started to realize the erosion test of the test specimen 40.

[0059] Step 4: The positioning component moves backward, the metal sample 40 is rotated to correspond with another set of scour and ablation generators 30, the positioning component moves forward again, and then the scour and ablation generator 30 is started to perform a secondary performance test.

[0060] Specifically:

[0061] Stop the scouring and ablation generator 30, and reverse the screw 51, causing the second mounting base 41 to retract a certain distance (i.e., towards) Figure 1 or Figure 2 The distance to the right in the indicated direction must be such that the spline of the spline shaft 541 does not disengage from the keyway portion of the spring groove 12. Then, the rotating ring 43 is started to rotate at a certain angle to correspond with another erosion generator 30. The second mounting base 41 is driven forward by the starting screw 51 so that the metal sample 40 contacts the erosion generator 30, and the erosion generator 30 is started for testing. This cycle is repeated until all the erosion generators 30 have been tested.

[0062] The translational speed of the positioning component (i.e., the second mounting base 41) is 10-80 mm / s (preferably 50 mm / s), and the rotational speed of the metal sample (i.e., the rotating ring 43) is 10° / s-30° / s (preferably 20° / s); the backward or forward movement distance of the positioning component (i.e., the second mounting base 43) is 20-100 mm (preferably 60 mm).

[0063] Step 5: Repeat Step 4 until all erosion generators 30 have completed the test;

[0064] Step six, respectively loosen and take off flush out the ablation generator 30 and metal sample 40, and analyze the results.

[0065] Example 2:

[0066] As another preferred embodiment of the present application, on the basis of the scheme of example 1, in order to realize the cooling of the ablation generator 30 in the test process and avoid the temperature of the ablation generator 30 being too high in the test process, the fixed seat 31 is provided with a circulating cooling channel, and a cooling cavity is formed in the arc-shaped fixed block 341 of the three-limb containing type clamping mechanism, and the circulating cooling channel is in communication with the cooling cavity. The cooling of the ablation generator 30 and the fixed seat 31 is realized by introducing cooling liquid or compressed air into the circulating cooling channel.

[0067] The cooling step is started synchronously when the ablation generator 30 is started. If compressed air is used for cooling, the compressed pressure of the circulating cooling channel is 0.4-0.8 MPa (preferably 0.6 MPa).

[0068] Example 3:

[0069] As another preferred embodiment of the present application, on the basis of the scheme of example 1, the clamping tool and the rotating tool are made of 40Cr and 40CrNiMo medium carbon quenched and tempered steel; at the same time, the support ring 23, the fixed ring 33 and the rotating ring 43 are made of alloy steel commonly used in the art or their surfaces are respectively coated with a layer of high-temperature ablation-resistant coating (the coating can be commonly used in the art).

[0070] Example 4:

[0071] As another preferred embodiment of the present application, on the basis of the scheme of example 1 or example 2, the metal sample 40 needs to be rusted and cleaned before the test, i.e. before step one, to avoid the impurities on the surface of the metal sample 40 affecting the test results.

Claims

1. A method for continuous high-temperature, high-speed gas erosion test, characterized in that: A simulation test device is used, which includes a test platform, a support component, a fixing component, and a positioning component. The support component, fixing component, and positioning component are arranged sequentially from left to right on the end face of the test platform. The support component and positioning component are slidably connected to the test platform, and the fixing component is fixedly connected to the test platform. The specific experimental steps are as follows: Step 1: First, place multiple sets of scour and ablation generators on the fixing component and place the metal sample on the positioning component, and clamp and fix the scour and ablation generators and the metal sample respectively. Step 2: Move the support assembly forward so that it supports the erosion generator; Step 3: Move the positioning component forward so that a set of scour and ablation generators are aligned with the metal sample, and then start the scour and ablation generators to perform performance testing; Step 4: The positioning component moves backward, the metal sample is rotated to correspond with another set of scour and ablation generators, the positioning component moves forward again, and then the scour and ablation generator is started to perform a secondary performance test. Step 5: Repeat Step 4 until all erosion generators have completed the test; Step 6: Loosen and remove the ablation generator and metal sample respectively, and analyze the results.

2. The method for continuous high-temperature high-speed gas erosion test according to claim 1, characterized in that: The support assembly includes a first mounting base, a first positioning frame, a support ring, and struts. The support ring is mounted on the end face of the first mounting base via the first positioning frame, and the first mounting base is slidably connected to the test stage. Multiple struts are evenly arranged around the central axis of the support ring. The fixing assembly includes a fixing base, a second positioning frame, a fixing ring, and a clamping fixture. The fixing ring is mounted on the end face of the fixing base via the second positioning frame, and the fixing base is fixedly connected to the test stage. The fixing ring has a first mounting hole corresponding to the strut, and a clamping fixture is arranged around the outer ring of the first mounting hole. The clamping fixtures are evenly distributed around the central axis of the fixing ring. The positioning assembly includes a second mounting base, a third positioning frame, a rotating ring, and a positioning fixture. The rotating ring is mounted on the second mounting base via the third positioning frame, and the second mounting base is slidably connected to the test stage. A positioning fixture is arranged on the rotating ring. The central axes of the support ring, the fixing ring, and the rotating ring are collinear, and the inner diameters of the support ring, the fixing ring, and the rotating ring are the same. An erosion generator is mounted on the clamping fixture, and a metal sample is mounted on the positioning fixture. The positioning fixture corresponds to the clamping fixture.

3. A method for continuous high-temperature, high-speed gas erosion test according to claim 1 or 2, characterized in that: The length of the erosion generator is 60-300mm and the outer diameter is φ20-φ60mm.

4. A method for continuous high-temperature high-speed gas erosion test according to any one of claims 1 to 3, characterized in that: The clamping fixture employs two sets of three-lobed enclosed clamping mechanisms, which are correspondingly arranged on both sides of the fixed ring. Each set includes two arc-shaped fixing blocks, one arc-shaped sliding block, one sliding sleeve, one sliding rod, and a set of first springs. The two arc-shaped fixing blocks are fixedly connected to the sidewalls of the fixed ring and are symmetrically arranged about the central axis of their corresponding first mounting holes. The sliding sleeve is slidably disposed on the sidewalls of the fixed ring and corresponds to the arc-shaped sliding block in the same set. The sliding rod is slidably connected to the end of the sliding sleeve closest to the arc-shaped sliding block, and the sliding rod is slidably away from the end of the sliding sleeve. One end of the sleeve is fixedly connected to the corresponding arc-shaped sliding block, and the end of the slide rod away from the arc-shaped sliding block is connected to the inner cavity of the corresponding sliding sleeve through the first spring; the sliding sleeves of the two sets of corresponding three-lobed enclosed clamping mechanisms are connected by a connecting rod and the connecting rod passes through the fixed ring, and the fixed ring has a vertical groove corresponding to the connecting rod; multiple sets of connecting rods are controlled to slide in the vertical groove by a ring gear, specifically: a ring gear is rotatably set on one side of the fixed ring and is coaxial with it, and the inner ring of the ring gear is located outside the first mounting hole, and arc-shaped grooves are evenly opened on the ring gear corresponding to the connecting rod.

5. A method for continuous high-temperature high-speed gas erosion test according to any one of claims 1 to 4, characterized in that: The rotating ring is rotatably connected to the third positioning frame, specifically: the third positioning frame consists of two "7"-shaped support rods, which are symmetrically arranged on the end face of the second mounting base. The two ends of the rotating ring are respectively slidably engaged with the ends of the two "7"-shaped support rods away from the second mounting base; an external toothed ring is provided on the outer ring of the rotating ring, and a first gear is provided on the end face of the second mounting base corresponding to the rotating ring, and the first gear meshes with the external toothed ring.

6. The method for continuous high-temperature high-speed gas erosion test according to claim 5, characterized in that: The positioning fixture includes a clamping mechanism and a positioning mechanism. A second mounting hole is opened on the rotating ring corresponding to the metal sample, and the clamping mechanism is positioned on the side of the rotating ring near the fixed ring corresponding to the second mounting hole. The positioning mechanism is positioned on the side of the rotating ring away from the fixed ring corresponding to the second mounting hole. The clamping mechanism includes two arc-shaped fixing blocks, one arc-shaped sliding block, a fixing sleeve, a sliding rod, and a set of first springs. The two arc-shaped fixing blocks are fixedly connected to the side wall of the rotating ring near the fixed ring, and the two arc-shaped fixing blocks are symmetrically arranged about the central axis of the second mounting hole. The fixing sleeve is fixedly positioned on the side wall of the rotating ring near the fixed ring. One side wall of the fixed ring and the fixed sleeve correspond to the arc-shaped sliding block. The sliding rod is slidably connected to the end of the fixed sleeve near the arc-shaped sliding block, and the end of the sliding rod away from the fixed sleeve is fixedly connected to the corresponding arc-shaped sliding block. The end of the sliding rod away from the arc-shaped sliding block is connected to the inner cavity of the fixed sleeve through the first spring. The positioning mechanism includes three sets of positioning block assemblies, and the three sets of positioning block assemblies are evenly distributed around the central axis of the second mounting hole. The positioning block assembly consists of an arc-shaped support block and a support baffle. The arc-shaped support block is fixedly connected to the side of the rotating ring away from the fixed ring, and the end of the arc-shaped support block away from the rotating ring is fixedly provided with a support baffle.

7. The method for continuous high-temperature high-speed gas erosion test according to claim 6, characterized in that: The outer diameter of the metal sample is φ18~φ50mm.

8. The method for continuous high-temperature high-speed gas erosion test according to claim 6, characterized in that: The sliding of the second mounting base and the rotation of the ring gear are achieved by a drive mechanism, which includes a screw, a sliding block, an annular top block, a driven shaft assembly, a second gear, and a connecting gear. The sliding block is fixedly disposed on the bottom surface of the second mounting base away from the fixed base, and the test platform has a first slide rail corresponding to the sliding block. The screw is rotatably disposed within the first slide rail of the test platform and is parallel to the central axis of the rotating ring. The sliding block is slidably engaged within the first slide rail, with its middle portion penetrated by the screw, and the sliding block and screw are threadedly connected. An annular top block is fixedly disposed on the side of the sliding block near the fixed ring and on the outer ring of the screw. The driven shaft assembly includes a splined shaft, a positioning rod, and a second spring. The splined shaft and the positioning rod are fixedly connected and coaxial. The splined shaft is disposed on the side of the screw near the fixed ring, and the positioning rod... The end furthest from the spline shaft is rotatably mounted inside the middle of the screw. The positioning guide rod is coaxial with the screw. A coaxial spline groove is opened at the end of the screw near the spline shaft and on the outer ring of the positioning guide rod. The outer wall of the positioning guide rod is correspondingly provided with a positioning spline. The outer wall of the spline shaft near the screw is fixedly fitted with an annular top block and an annular limiting block. The connecting gear is rotatably mounted on the fixed seat and meshes with the annular gear. A second gear is set on the outer wall of the spline shaft and corresponding to the connecting gear, and the second gear meshes with the connecting gear. A spline hole is opened in the middle of the second gear corresponding to the spline of the spline shaft. A coaxial spring groove is opened on the side of the spline shaft furthest from the screw. The end of the spline shaft furthest from the screw is connected to the spring groove by a second spring. The inner wall of the spring groove is correspondingly provided with a keyway for the spline of the spline shaft.

9. The method for continuous high-temperature high-speed gas erosion test according to claim 8, characterized in that: The connecting gear is mounted on the fixed base via a gear bracket.

10. The method for continuous high-temperature high-speed gas erosion test according to claim 8, characterized in that: In step four, the translational speed of the positioning component is 10-80 mm / s, and the rotational speed of the metal sample is 10° / s-30° / s; the backward or forward movement distance of the positioning component in step four is 20-100 mm.

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