Surfacing wear-resistant material performance detection tool and detection method

Abstract

The invention discloses a surfacing wear-resistant material performance detection tool and detection method, and the detection tool comprises a detection box body which is internally provided with a detection cavity and is opened or closed through an observation door; the first clamping part and the second clamping part are arranged on the two opposite sides in the detection cavity, and at least one of the first clamping part and the second clamping part is arranged in a sliding mode to adjust the distance between the two clamping parts; clamping heads are arranged on the first clamping part and the second clamping part respectively, positioning units and clamping units are arranged in the clamping heads, the positioning units are used for abutting against and limiting the end of the test sample, and the clamping units are used for pressing and clamping the test sample in the circumferential direction of the test sample. The two clamping parts with the adjustable distance are arranged in the detection cavity, the test samples are clamped and positioned through the clamping heads, the clamping units can be suitable for the test samples with different end sizes, the two clamping parts can meet the clamping requirements of the test samples with different lengths, the universality of the detection tool is improved, and the detection cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of material performance testing equipment, and in particular to a cladding wear-resistant material performance testing tool and a testing method. Background Art

[0002] In aircraft engines, low-pressure turbine blades are mostly structured with serrated crowns. Adjacent blades need to cooperate with each other through the damping surface of the serrated crown, and a wear-resistant layer is welded on the damping surface of the serrated crown by argon arc welding to reduce excessive wear of the damping surface during engine operation. In order to ensure the effective effect of the wear-resistant layer, it is also necessary to test the mechanical properties of the material used to make the wear-resistant layer. The commonly used test method is to make the material used to make the wear-resistant layer into a threaded specimen and perform a tensile specimen test. However, in order to maintain the clamping stability of the threaded specimen, the current fixture has a one-to-one correspondence with the redundant threaded specimens. Once the threaded specimen has a dimensional error during the manufacturing process, the fixture will be difficult to use, and when other size specimens are required for tensile testing, the matching fixture needs to be replaced. The process is cumbersome and the experimental cost is high.

[0003] Therefore, how to reduce the difficulty and cost of performance testing of cladding wear-resistant materials is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a tool for testing properties of cladding wear-resistant materials with lower testing difficulty and testing cost.

[0005] Another object of the present invention is to provide a detection method suitable for the above-mentioned detection tooling.

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

[0007] A tool for testing performance of surfacing wear-resistant materials, comprising:

[0008] A detection box body, wherein a detection cavity is arranged inside, and the detection cavity is opened or closed by an observation door;

[0009] The first clamping part and the second clamping part are arranged on opposite sides of the detection cavity, and at least one of the first clamping part and the second clamping part is slidably arranged to adjust the distance between the two clamping parts; the first clamping part and the second clamping part are respectively provided with clamping heads, and the clamping heads are provided with positioning units and clamping units inside, the positioning unit is used to abut and limit the end of the test sample, and the clamping unit is used to clamp the test sample from the circumferential direction of the test sample.

[0010] Preferably, in the above-mentioned surfacing wear-resistant material performance testing tool, the positioning unit includes:

[0011] A positioning plate and a positioning slider, wherein the positioning plate is arranged in a floating manner in the clamping head along a first direction, and the positioning slider is arranged in a sliding manner in the clamping head along a second direction, and two positioning sliders are arranged symmetrically in the clamping head, and the first direction is perpendicular to the second direction;

[0012] A driving connecting rod, corresponding to the positioning slide block one by one and having two ends respectively hinged to the positioning plate and the positioning slide block;

[0013] The positioning drive block is used to drive the positioning plate to switch between the first position and the second position in the first direction. When the positioning plate is at the first position, the two positioning slide blocks are in contact with each other; when the positioning plate is at the second position, the two positioning slide blocks are opened.

[0014] Preferably, in the above-mentioned surfacing wear-resistant material performance testing tool, the positioning plate is floatingly arranged in the clamping head through a plurality of springs, and when the positioning plate is located at the first position and the second position, the springs are in a compressed state.

[0015] Preferably, in the above-mentioned surfacing wear-resistant material performance testing tool, the positioning drive block is fixedly connected to the positioning plate and one end extends out of the clamping head, the clamping head is provided with a positioning groove for the positioning drive block to slide, and the positioning groove is opened along the first direction.

[0016] Preferably, in the above-mentioned surfacing wear-resistant material performance testing tool, the clamping head also includes a connecting block arranged on the opening side, and each of the positioning sliders is provided with a connecting block on the side facing away from the positioning plate, and the two connecting blocks follow the positioning slider to move to fit or open; a through hole with a semicircular hole structure is provided on the connecting block, and when the two connecting blocks are fitted together, the through hole is matched to form a circular through hole.

[0017] Preferably, in the above-mentioned surfacing wear-resistant material performance testing tool, an anti-slip pad is fixedly provided on the inner side of the through hole.

[0018] Preferably, in the above-mentioned surfacing wear-resistant material performance testing tool, the clamping unit includes:

[0019] Clamping blocks, two of which are symmetrically arranged, each of which comprises a base and a clamping claw rotatably arranged on the base, and the clamping claws on the two clamping blocks are spaced apart and arranged opposite to each other;

[0020] A threaded rod, the outer wall of which is provided with a bidirectional thread, the threaded rod passes through the base and is threadedly connected to the base, and one side of the base is slidably provided on the side wall of the clamping head;

[0021] The driving part is used to drive the threaded rod to rotate so as to drive the two clamping blocks to move closer to or away from each other.

[0022] Preferably, in the above-mentioned cladding wear-resistant material performance testing tool, a temperature regulating chamber is further provided in the testing box, a temperature regulating device is provided in the temperature regulating chamber and is connected to the testing chamber through a plurality of air holes.

[0023] Preferably, in the above-mentioned surfacing wear-resistant material performance testing tool, the first clamping part includes a fixed seat and a first clamping head, the fixed seat is fixedly arranged on one side of the detection cavity, and the first clamping head is fixedly arranged on the fixed seat;

[0024] The second clamping part includes a sliding seat and a second clamping head. A guide block is arranged in the detection cavity. The sliding seat is slidably arranged on the guide block to drive the second clamping head to move closer to or away from the first clamping head. The opening side of the first clamping head faces the opening side of the second clamping head.

[0025] A testing method, using the cladding wear-resistant material performance testing tool described in any one of the above embodiments to perform a performance test on a threaded sample made of cladding wear-resistant material, the testing method comprising at least the following steps:

[0026] Processing test specimens: Using welding wire with a surfacing wear-resistant layer, single crystal specimens used to make turbine rotor blades are butt-filled and processed into dumbbell-shaped test specimens with conical block structures at both ends;

[0027] Positioning the first end: open the observation door, open the positioning unit on the first clamping part, insert one end of the test specimen into the clamping head, ensure that the conical block structure of the test specimen is fully inserted, and then close the positioning unit to complete the positioning of the first end of the test specimen;

[0028] First end locking: driving the clamping unit of the clamping head on the first clamping part to move, so that the clamping unit completely fits the test specimen from the circumferential direction, and clamps the first end of the test specimen under the action of the first force applied to the clamping unit;

[0029] Positioning and locking the second end: adjusting the distance between the first clamping portion and the second clamping portion so that the second end of the test specimen is inserted into the clamping head on the second clamping portion, and repeating the above steps to position and clamp and lock the second end of the test specimen;

[0030] Testing: After closing the observation door, adjust the temperature in the testing chamber, set the tensile parameters, perform tensile tests on the test specimens and record the test results;

[0031] Remove the test sample: After the test, open the observation door, unlock the first end and the second end of the test sample respectively, adjust the distance between the first clamping part and the second clamping part and remove the test sample.

[0032] It can be seen from the above technical scheme that the detection tooling provided by the present invention provides a detection environment for the test sample through the detection cavity, and positions the test sample through the positioning unit to avoid the test sample deviating from the symmetry center plane and generating an eccentric moment when the clamping unit clamps the test sample. At the same time, the distance between the first clamping part and the second clamping part is adjustable to enable detection of test samples of different sizes; and the rotatable clamping claw structure of the clamping unit can also achieve a more fitting clamping structure for the test sample, thereby improving the clamping effect of the detection tooling on the test sample and improving the accuracy of the performance test. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of the structure of the detection tooling provided in an embodiment of the present invention;

[0035] Figure 2 It is a schematic diagram of the cross-sectional structure of the positioning unit in the clamping head;

[0036] Figure 3 for Figure 2 A schematic diagram of the structure when the middle positioning plate moves to the second position in the first direction;

[0037] Figure 4 for Figure 2 Schematic diagram of the back structure;

[0038] Figure 5 for Figure 4 A top view of

[0039] Figure 6 is a schematic diagram of the cross-sectional structure of a clamping unit in a clamping head;

[0040] Figure 7 It is a structural schematic diagram of the clamping block;

[0041] Figure 8 Schematic diagram of the test specimen.

[0042] Among them, 10-detection box; 110-detection chamber; 120-observation door; 130-temperature adjustment chamber; 1310-air hole; 20-first clamping part; 210-fixed seat; 30-second clamping part; 310-sliding seat; 320-guide block; 40-clamping head; 410-positioning groove; 420-connecting block; 4210-through hole; 4220-anti-slip pad; 50-positioning unit; 510-positioning plate; 520-positioning slider; 530-driving connecting rod; 540-positioning driving block; 550-spring; 60-clamping unit; 610-clamping block; 6110-base; 6120-clamping claw; 620-threaded rod; 630-driving part; 70-test sample. DETAILED DESCRIPTION

[0043] The core of the invention is to disclose a tool for testing the performance of surfacing wear-resistant materials with lower testing difficulty and testing cost.

[0044] Another object of the present invention is to provide a detection method suitable for the above-mentioned detection tooling.

[0045] In order to make the technical personnel in this field better understand the scheme of the present invention, the embodiments of the present invention are described below with reference to the accompanying drawings. In addition, the embodiments shown below do not limit the content of the invention recorded in the claims. In addition, the entire contents of the structures represented by the following embodiments are not limited to those necessary for the solutions of the invention recorded in the claims.

[0046] like Figure 1 As shown, the performance testing tool for surfacing wear-resistant materials provided by the embodiment of the present invention includes a testing box 10, and a testing chamber 110 is arranged inside the box structure to provide a testing space for the test sample 70. The testing chamber 110 is opened and closed by an observation door 120. The first clamping part 20 and the second clamping part 30 are specifically arranged in the testing chamber 110, and the first clamping part 20 and the second clamping part 30 are arranged on opposite sides of the testing chamber 110. It should be noted that the relative arrangement here means that the areas on the first clamping part 20 and the second clamping part 30 for clamping the test sample 70 are facing each other; at the same time, at least one of the first clamping part 20 and the second clamping part 30 is slidably arranged so that the two clamping parts can adjust the spacing. At the same time, it should be noted that at least one of the first clamping part 20 and the second clamping part 30 is connected to an existing tensile testing machine driving device, so that after the connection of the test sample 70 is achieved, the performance test can be performed by applying a tensile force through the testing machine. Furthermore, when it is necessary to clamp test specimens 70 of different lengths, it is only necessary to slide and adjust the distance between the two clamping parts to achieve the adaptive use of the testing tooling without replacing the tooling, thereby reducing the performance testing cost of multiple test specimens 70.

[0047] Specifically, a clamping head 40 is provided on the first clamping portion 20 and the second clamping portion 30 on the sides facing each other, and the clamping head 40 is used to clamp one side end of the test sample 70. A positioning unit 50 and a clamping unit 60 are provided inside the clamping head 40, wherein the positioning unit 50 is used to abut and limit the end of the test sample 70 after one side end of the test sample 70 extends into the clamping head 40. It can be a flat plate structure padded with a rubber pad, or it can be a plate with an elastic member at the bottom, so that the end of the test sample 70 can be limited inside the clamping head 40. The clamping unit 60 is used to clamp the test sample 70 from the circumferential direction of the test sample 70. After the positioning unit 50 realizes the positioning of the end of the test sample 70, the clamping unit 60 can stably lock the end of the test sample 70 into the clamping head 40, and then conduct the subsequent performance test; the clamping unit 60 can be a structure that is pressed toward the middle by multiple elastic members, or it can be a tightenable annular structure, which can be tightened after the test sample 70 passes through to achieve the clamping of the test sample 70. It should be noted that applying a force from the circumferential direction can make the clamping unit 60 act on the test sample 70 more evenly, so as to improve the stable connection effect of the test sample 70.

[0048] It should be noted that, in the above embodiment, the end of the test sample 70 is preferably positioned to the symmetrical center plane of the clamping head 40 under the action of the positioning unit 50, so as to avoid the test sample 70 deviating from the center line and generating eccentric moment when the clamping unit 60 performs the clamping action, thereby causing errors in the test results.

[0049] Furthermore, if Figure 2 and Figure 3As shown, in some embodiments of the present invention, the positioning unit 50 includes a positioning plate 510, a positioning slider 520, a driving connecting rod 530 and a positioning driving block 540, wherein the positioning plate 510 is slidably arranged inside the clamping head 40, and the sliding direction of the positioning plate 510 is arranged along the first direction. It should be noted that the positioning plate 510 is used to satisfy the insertion of the test sample 70 and realize the abutment of the end of the test sample 70 through its floating effect in the first direction after the end of the test sample 70 is placed in the clamping head 40; and in a specific embodiment of the present invention, two parallel slides or guide rails are arranged at intervals inside the clamping head 40, and the single slide or guide rail is arranged perpendicular to the first direction, so that the positioning plate 510 can slide through the limiting effect of the two intervals of the slides, thereby reducing the risk of deflection during the sliding process. On this basis, the two positioning sliders 520 are slidably arranged in the clamping head 40 along the second direction. Since there are two positioning sliders 520 and they are block-shaped structures, the same slide groove can be set on one side wall of the clamping head 40 for the two positioning sliders 520 to slide and set. It should be noted that the positioning sliders 520 are symmetrically arranged in the clamping head 40 about the central symmetry plane of the clamping head 40, and the positioning plate 510 preferably penetrates the clamping head 40 in the second direction, so that the two positioning sliders 520 can be symmetrically arranged about the symmetry plane of the positioning plate 510, thereby realizing stable driving of the positioning plate 510 during movement. At the same time, it is preferred that the first direction and the second direction are perpendicular to each other, so that the arrangement of the positioning plate 510 and the positioning slider 520 in the clamping head 40 is more regular.

[0050] Based on the above structure, Figure 2As shown, the driving connecting rod 530 and the positioning slider 520 are arranged in a one-to-one correspondence, that is, when two positioning sliders 520 are arranged, two driving connecting rods 530 are also arranged, and the two ends of a single driving connecting rod 530 are respectively hingedly connected to the positioning slider 520 and the point area on the positioning plate 510, and the driving connecting rod 530 is in an inclined state relative to the positioning plate 510. Combined with the sliding arrangement structure of the positioning plate 510 and the positioning slider 520 in the clamping head 40 in the above embodiment, when the positioning plate 510 moves away from the positioning slider 520 in a first direction, it can transmit the force to the positioning slider 520 through the action of the driving connecting rod 530, and the positioning slider 520 will decompose the force of the driving connecting rod 530 along the direction parallel to the second direction and perpendicular to the second direction, wherein The component force perpendicular to the second direction will be offset by the limiting effect of the slide groove, while the component force parallel to the second direction will drive the positioning slider 520 to slide in the slide groove. Moreover, since the two positioning sliders 520 and the two driving connecting rods 530 are symmetrically arranged structures, when the positioning plate 510 moves away from the positioning slider 520 in the first direction, the two positioning sliders 520 will open from the fitted state, separate and move in the opposite direction, so that the end of the test sample 70 can be inserted into the fitting area of ​​the two positioning sliders 520 and reach the position of the positioning plate 510 to complete the abutment. At the same time, the retraction and fitting movement of the two positioning sliders 520 can also perform standard centering adjustment on the test sample 70, so that the test sample 70 is stably located at the central symmetric plane position of the clamping head 40 and completes the positioning.

[0051] Furthermore, the driving end of the above-mentioned action process is the positioning plate 510, that is, the positioning plate 510 needs to move in the first direction to drive the movement of the driving connecting rod 530 and the positioning slider 520. Therefore, in some embodiments of the present invention, Figure 4 As shown, the positioning unit 50 is further provided with a positioning driving block 540 for driving the positioning plate 510 to move in the first direction, and preferably the positioning driving block 540 passes through at least the first position and the second position for the movement of the positioning plate 510 in the first direction, so as to be able to switch between the first position and the second position, and it should be noted that, as Figure 2 As shown, when the positioning plate 510 is located at the first position, the two positioning slide blocks 520 are in contact and fit state, the clamping head 40 is in a closed state, and the end of the test sample 70 cannot be placed in the clamping head 40; and as shown in FIG. Figure 3As shown, when the positioning plate 510 is located at the second position, the two positioning slide blocks 520 are opened, and the clamping head 40 is in an open state at this time. The end of the test specimen 70 can be placed in the clamping head 40 and contact the positioning plate 510, so as to realize its end positioning through the positioning plate 510, and after the positioning drive block 540 releases the positioning plate 510, the test specimen 70 is centered and calibrated by the mutual movement of the two positioning slide blocks 520, so as to maintain the positioning effect of the test specimen 70.

[0052] Furthermore, in one embodiment of the present invention, the positioning plate 510 is floatingly set in the clamping head 40 by means of a plurality of springs 550. The plurality of springs 550 are arranged at intervals, and the two ends of a single spring 550 are respectively fixedly connected to the bottom of the frame structure of the clamping head 40 and one side of the positioning plate 510. It should be noted that when the positioning plate 510 is located in the first position and the second position, the spring 550 is in a compressed state, so that the positioning plate 510 has a tendency to drive the positioning slider 520 to move along a mutually fitting position in both the first position and the second position. On this basis, when the test sample 70 is placed in the clamping head 40 and comes into contact with the positioning plate 510, the positioning plate 510 is released by the positioning drive block 540, so that the elastic action of the spring 550 in the compressed state can drive the two positioning sliders 520 to approach and contact the test sample 70, so as to realize the calibration and centering of the test sample 70 in the clamping head 40.

[0053] In addition, the positioning drive block 540 for driving the positioning plate 510 to move along the first direction may be a motor, or a rod structure for manual driving by an operator. In some specific embodiments of the present invention, for example Figure 4 As shown, the positioning drive block 540 is fixedly connected to the positioning plate 510, and one end of the positioning drive block 540 extends out of the clamping head 40 for manual operation by an operator to adjust the position of the positioning plate 510. Correspondingly, a positioning groove 410 is provided on the clamping head 40 for the positioning drive block 540 to slide, and the positioning groove 410 is opened along the first direction to ensure the smooth movement of the positioning drive block 540.

[0054] Furthermore, the clamping head 40 is preferably configured as a closed structure to ensure the protection of internal structural parts. On this basis, the clamping head 40 also includes a connecting block 420 arranged on its open side. The connecting block 420 can be an L-shaped or U-shaped bending structure, so that the opening side can be closed while being fixedly connected to the connecting block 420 through the bending structure. It should be noted that each positioning slider 520 is provided with a connecting block 420 on the side facing away from the positioning plate 510, and the two connecting blocks 420 can move with the positioning slider 520 to fit or open the open side of the clamping head 40.

[0055] Based on the above structure, Figure 5 As shown, preferably, a through hole 4210 with a semicircular hole structure is provided on the connection block 420. When the two connection blocks 420 are fitted, the through hole 4210 is matched to be a circular through hole, and the radius of the circular through hole is not less than the radius of the test sample 70, so that the test sample 70 can pass through while maintaining the fitting state of the two connection blocks 420. At the same time, in some embodiments of the present invention, an anti-skid pad 4220 is fixedly provided on the inner side of the through hole 4210. When the through hole 4210 is matched to be a circular through hole, the anti-skid pad 4220 can fit the outer wall of the test sample 70 and realize the accurate positioning of the test sample 70 through the friction force.

[0056] Furthermore, in the detection tooling provided in the embodiment of the present invention, Figure 6 As shown, the clamping unit 60 includes a clamping block 610, a threaded rod 620 and a driving part 630, wherein two clamping blocks 610 are symmetrically arranged in the clamping head 40 about the central symmetry plane of the clamping head 40 to cooperate with the clamping of the test sample 70, as shown in FIG. Figure 7 As shown, a single clamping block 610 includes a base 6110 and a clamping jaw 6120, the base 6110 is used for the action part to realize connection and drive, and the clamping jaw 6120 is rotatably arranged on the base 6110, and the clamping jaw 6120 is used to directly contact the test sample 70 to realize the clamping of the test sample 70, and its rotating structure can be rotated and adjusted to fit the locking of the clamping area. On this basis, the outer wall of the threaded rod 620 is provided with a bidirectional thread, and the threaded rod 620 passes through the base 6110 and is threadedly connected with the base 6110, and at the same time, one side of the base 6110 is slidably arranged on the side wall of the clamping head 40, so that it can slide along the side wall under the rotation of the threaded rod 620, and preferably one side of the base 6110 is slidably arranged on the side wall of the clamping head 40 in the second direction, so that the movement of the base 6110 is parallel to the positioning plate 510, and after the positioning plate 510 realizes the positioning of the test sample 70, the test sample 70 can be uniformly clamped.

[0057] It should be noted that the two bases 6110 are respectively connected to the unidirectional threads in the bidirectional threads of the threaded rod 620, so that when the threaded rod 620 rotates unidirectionally, the two bases 6110 can produce reverse movement, that is, by operating the threaded rod 620 to achieve the movement of the two bases 6110 moving closer or farther, the locking and separation operations of the test sample 70 are realized.

[0058] On this basis, the driving part 630 is used to drive the threaded rod 620 to rotate, so as to drive the two clamping blocks 610 to move closer to or farther from each other, and to achieve the clamping, locking and unlocking operations of the test sample 70 through the clamping jaws 6120. It should be noted that the driving part 630 is preferably a commonly used structure, such as a driving motor, or a rotating handle of a locking mechanism.

[0059] In order to further optimize the above technical solution, the detection tooling provided in the embodiment of the present invention is further provided with a temperature adjustment chamber 130 in the detection box 10, and a temperature adjustment device is provided in the temperature adjustment chamber 130, which can be a temperature adjustment device used in a common performance detection process. The temperature adjustment chamber 130 is arranged in close contact with the detection chamber 110, and is connected through a plurality of air holes 1310, so that the temperature of the detection chamber 110 can be quickly adjusted. The setting of the temperature adjustment chamber 130 can create different temperature environments for the detection chamber 110, so that the test sample 70 has a richer test environment. It should be noted that, in a specific embodiment of the present invention, a 1.2 mm imported T800 welding wire is used to perform butt filling welding on a DD9 single crystal sample, and the sample is processed into a test sample 70, and tensile tests are performed at room temperature and high temperature (980°C), respectively, and the performance test can be successfully completed. Among them, the average room temperature tensile strength of the test sample 70 is 858 MPa, and the average elongation after fracture of the welded sample is 0.9%; the room temperature tensile fracture of the test sample 70 shows brittle fracture characteristics in a microscopic manner, the fracture is flat, the edge is dendritic-like cleavage fracture characteristics, and the core is granular brittle fracture characteristics.

[0060] The average high-temperature tensile strength of test sample 70 is 183MPa, and the average elongation after fracture of the welded sample is 6.8%; the fracture characteristics of the high-temperature tensile fracture of test sample 70 are similar to those at room temperature, both showing dendritic cleavage fracture characteristics or granular brittle fracture characteristics, and a thick oxide scale can be seen on the cross section.

[0061] Further, in some embodiments of the present invention, the first clamping portion 20 includes a fixed seat 210 and a first clamping head 40, the fixed seat 210 is fixedly arranged on one side of the detection cavity 110, and the first clamping head 40 is fixedly arranged on the fixed seat 210, that is, it is the fixed end of the clamping structure; and the second clamping portion 30 includes a sliding seat 310 and a second clamping head 40, and correspondingly, a guide block 320 is arranged in the detection cavity 110, one or two guide blocks 320 are arranged, and when two guide blocks 320 are arranged, they are arranged in parallel, the guide block 320 is fixedly arranged in the detection cavity 110, and the sliding seat 310 is slidably arranged on the guide block 320, so as to be able to drive the second clamping head 40 to move closer to or away from the first clamping head 40, and at the same time, the opening side of the first clamping head 40 faces the opening side of the second clamping head 40. By adjusting the distance between the first clamping head 40 and the second clamping head 40 , the detection tooling provided in the embodiment of the present invention can be adapted to test specimens 70 of different lengths, thereby reducing the tooling adjustment cost during multiple tests.

[0062] Furthermore, an embodiment of the present invention also provides a method for testing the performance of a surfacing wear-resistant material. The method uses the surfacing wear-resistant material performance testing tool provided in any of the above embodiments to perform a performance test on a threaded sample made of the surfacing wear-resistant material. Specifically, the method includes at least the following steps:

[0063] S01: Processing test specimens: Using welding wire with a surfacing wear-resistant layer, butt-fill welding is performed on single crystal specimens used to make turbine rotor blades, and the specimens are processed into dumbbell-shaped test specimens with conical block structures at both ends;

[0064] It should be noted that if Figure 8 As shown, the test specimen in a dumbbell shape with conical block structures at both ends can achieve stable abutment positioning through the positioning plate, and the connecting block is driven to move by the positioning slider, so as to position the middle area of ​​the test specimen with the help of the anti-slip pads on the through holes of the two semicircular hole structures; and then the clamping claws on the clamping block can fit the side wall of the conical block structure with the help of rotation to achieve a locking connection of the test specimen.

[0065] S02: First end positioning: open the observation door, turn on the positioning unit on the first clamping part, insert one end of the test specimen into the clamping head, ensure that the conical block structure of the test specimen is fully inserted, and then close the positioning unit to complete the positioning of the first end of the test specimen;

[0066] S03: first end locking: driving the clamping unit of the clamping head on the first clamping part to move, so that the clamping unit completely fits the test specimen from the circumferential direction, and clamps the first end of the test specimen under the action of the first force applied to the clamping unit;

[0067] S04: Positioning and locking the second end: adjusting the distance between the first clamping portion and the second clamping portion to extend the second end of the test specimen into the clamping head on the second clamping portion, and repeating steps S02 and S03 to position and clamp and lock the second end of the test specimen;

[0068] It should be noted that in step S04, repeating steps S02 and S03 specifically refers to performing the same positioning and locking operations on the clamping head on the second clamping part as those on the clamping head on the first clamping part, which will not be repeated here.

[0069] S05: Testing: After closing the observation door, adjust the temperature in the testing chamber, set the tensile parameters, perform a tensile test on the test specimen and record the test results;

[0070] S06: Removing the test sample: After the test is completed, open the observation door, unlock the first end and the second end of the test sample respectively, adjust the distance between the first clamping part and the second clamping part, and remove the test sample.

[0071] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0072] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0073] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0074] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

Claims

1. A tool for testing the performance of surfacing wear-resistant materials, characterized in that: include: A detection box body, wherein a detection cavity is arranged inside, and the detection cavity is opened or closed by an observation door; The first clamping part and the second clamping part are arranged on opposite sides of the detection cavity, and at least one of the first clamping part and the second clamping part is slidably arranged to adjust the distance between the two clamping parts; the first clamping part and the second clamping part are respectively provided with clamping heads, and the clamping heads are provided with positioning units and clamping units inside, the positioning unit is used to abut and limit the end of the test sample, and the clamping unit is used to clamp the test sample from the circumferential direction of the test sample.

2. The tooling for testing the performance of surfacing wear-resistant materials according to claim 1, characterized in that: The positioning unit comprises: A positioning plate and a positioning slider, wherein the positioning plate is arranged in a floating manner in the clamping head along a first direction, and the positioning slider is arranged in a sliding manner in the clamping head along a second direction, and two positioning sliders are arranged symmetrically in the clamping head, and the first direction is perpendicular to the second direction; A driving connecting rod, corresponding to the positioning slide block one by one and having two ends respectively hinged to the positioning plate and the positioning slide block; The positioning drive block is used to drive the positioning plate to switch between the first position and the second position in the first direction. When the positioning plate is at the first position, the two positioning slide blocks are in contact with each other; when the positioning plate is at the second position, the two positioning slide blocks are opened.

3. The tooling for testing the performance of surfacing wear-resistant materials according to claim 2, characterized in that: The positioning plate is floatingly arranged in the clamping head through a plurality of springs, and when the positioning plate is located at the first position and the second position, the springs are in a compressed state.

4. The tooling for testing the performance of surfacing wear-resistant materials according to claim 2, characterized in that: The positioning drive block is fixedly connected to the positioning plate and one end thereof extends out of the clamping head. The clamping head is provided with a positioning groove for the positioning drive block to slide, and the positioning groove is opened along the first direction.

5. The tooling for testing the performance of surfacing wear-resistant materials according to claim 2, characterized in that: The clamping head also includes a connecting block arranged on the opening side, and each positioning slider is provided with a connecting block on the side facing away from the positioning plate, and the two connecting blocks follow the movement of the positioning slider to fit together or open; a through hole with a semicircular hole structure is opened on the connecting block, and when the two connecting blocks are fitted together, the through hole is matched to form a circular through hole.

6. The tooling for testing the performance of surfacing wear-resistant materials according to claim 5, characterized in that: An anti-slip pad is fixedly arranged on the inner side of the through hole.

7. The tooling for testing the performance of surfacing wear-resistant materials according to claim 1, characterized in that: The clamping unit comprises: Clamping blocks, two of which are symmetrically arranged, each of which comprises a base and a clamping claw rotatably arranged on the base, and the clamping claws on the two clamping blocks are spaced apart and arranged opposite to each other; A threaded rod, the outer wall of which is provided with a bidirectional thread, the threaded rod passes through the base and is threadedly connected to the base, and one side of the base is slidably provided on the side wall of the clamping head; The driving part is used to drive the threaded rod to rotate so as to drive the two clamping blocks to move closer to or away from each other.

8. The tooling for testing the performance of surfacing wear-resistant materials according to claim 1, characterized in that: The detection box is also provided with a temperature adjustment cavity, in which a temperature adjustment device is provided and the temperature adjustment cavity is connected with the detection cavity through a plurality of air holes.

9. The tooling for testing the performance of surfacing wear-resistant materials according to claim 1, characterized in that: The first clamping portion includes a fixing seat and a first clamping head, wherein the fixing seat is fixedly arranged at one side of the detection cavity, and the first clamping head is fixedly arranged on the fixing seat; The second clamping part includes a sliding seat and a second clamping head. A guide block is arranged in the detection cavity. The sliding seat is slidably arranged on the guide block to drive the second clamping head to move closer to or away from the first clamping head. The opening side of the first clamping head faces the opening side of the second clamping head.

10. A detection method, characterized in that: Using the cladding wear-resistant material performance testing tool as described in any one of claims 1 to 9, the performance test of the threaded sample made of cladding wear-resistant material is carried out, and the testing method at least comprises the following steps: Processing test specimens: Using welding wire with a surfacing wear-resistant layer, single crystal specimens used to make turbine rotor blades are butt-filled and processed into dumbbell-shaped test specimens with conical block structures at both ends; Positioning the first end: open the observation door, open the positioning unit on the first clamping part, insert one end of the test specimen into the clamping head, ensure that the conical block structure of the test specimen is fully inserted, and then close the positioning unit to complete the positioning of the first end of the test specimen; First end locking: driving the clamping unit of the clamping head on the first clamping part to move, so that the clamping unit completely fits the test specimen from the circumferential direction, and clamps the first end of the test specimen under the action of the first force applied to the clamping unit; Positioning and locking the second end: adjusting the distance between the first clamping portion and the second clamping portion so that the second end of the test specimen is inserted into the clamping head on the second clamping portion, and repeating the above steps to position and clamp and lock the second end of the test specimen; Testing: After closing the observation door, adjust the temperature in the testing chamber, set the tensile parameters, perform tensile tests on the test specimens and record the test results; Remove the test sample: After the test, open the observation door, unlock the first end and the second end of the test sample respectively, adjust the distance between the first clamping part and the second clamping part and remove the test sample.

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