Tool for thermal shock test and thermal shock test method

Abstract

The invention discloses a tool for a thermal shock test and a thermal shock test method.The tool for the thermal shock test comprises a first bottom plate, a second bottom plate and a third bottom plate, the first bottom plate is provided with a first face, and the first face is provided with at least two first connecting parts used for being connected with one side of a to-be-tested test piece; the second bottom plate is provided with a second surface opposite to the first surface, the second surface is provided with at least two second connecting parts used for being connected with the other side of the test piece to be tested, and the second connecting parts can be arranged corresponding to the first connecting parts; and the connecting assembly is connected with the first bottom plate and the second bottom plate. According to the tool for the thermal shock test, at least two to-be-tested test pieces can be conveniently subjected to the thermal shock test at the same time, so that the test efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of thermal shock test equipment, in particular to a thermal shock test tool and a thermal shock test method. BACKGROUND

[0002] Thermal shock test is a test for testing the adaptability of products to the rapid change of the surrounding temperature, and can be used for product components such as composite material plates.

[0003] Composite materials are composed of continuous phase matrix and reinforcing materials. The matrix of the composite material is divided into two categories of metal and non-metal, wherein: the commonly used metal matrix is aluminum, magnesium, titanium and its alloy, and the non-metal matrix is mainly resin, ceramic, carbon, etc. The reinforcing material mainly refers to continuous fibers, including high-performance fibers such as carbon fibers, aramid fibers, silicon carbide fibers, etc. Because the composite material has the advantages of high specific strength, high specific modulus, designable mechanical properties, high (low) temperature resistance and corrosion resistance, etc., it is widely used in the structure of aviation, aerospace and other fields, engine components, thermal protection systems and other components. However, in practical application, the composite material often has to withstand the thermal shock effect caused by the rapid change of temperature, so the thermal shock resistance is an important index for the composite material as a structural part.

[0004] At present, in the existing composite material thermal shock resistance test technology, the composite material plate test piece is installed in the test tool, one test piece is tested at a time, and is fixed in front of the flame nozzle for testing. Such test process is time-consuming and labor-intensive, and the efficiency is low.

[0005] Therefore, how to improve the test efficiency is a problem to be solved by the personnel in the technical field. SUMMARY

[0006] Therefore, the present application provides a thermal shock test tool to improve the test efficiency. The present application also provides a thermal shock test method.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0008] A thermal shock test tool, comprising:

[0009] A first bottom plate having a first surface, the first surface having at least two first connecting portions for connecting with one side of a test piece to be tested;

[0010] A second bottom plate having a second surface opposite to the first surface, the second surface having at least two second connecting portions for connecting with the other side of the test piece to be tested, the second connecting portions being capable of being arranged correspondingly with the first connecting portions;

[0011] A connecting assembly connects the first bottom plate and the second bottom plate.

[0012] Optionally, in the above-mentioned hot shock test tool, the connecting assembly comprises:

[0013] A center column, the first bottom plate and the second bottom plate are connected with the outer wall of the center column, and the center column has a cooling channel inside for the flow of cooling medium;

[0014] A connecting base for connecting with the test device table, the connecting base is connected with one end of the center column.

[0015] Optionally, in the above-mentioned hot shock test tool, the first bottom plate is fixedly connected with the outer wall of the center column, and the second bottom plate can be sleeved on the center column from the other end of the center column and is in sliding fit with the center column;

[0016] The connecting assembly further comprises a limiting structure detachably connected with the other end of the center column, the limiting structure can adjust the position along the extension direction of the center column and is in limiting contact with the side of the second bottom plate away from the first bottom plate.

[0017] Optionally, in the above-mentioned hot shock test tool, the limiting structure comprises:

[0018] A positioning bolt connected with the other end of the center column and having an external thread, the second bottom plate has a sleeving hole capable of passing through the positioning bolt and sleeving on the outer wall of the center column;

[0019] A fixing plate capable of passing through the positioning bolt, the fixing plate has a third side and a fourth side opposite to each other, the third side is used for contacting the side of the second bottom plate away from the first bottom plate;

[0020] A connecting piece in threaded fit with the positioning bolt and capable of adjusting the position along the extension direction of the positioning bolt, the connecting piece is used for contacting the fourth side.

[0021] Optionally, in the above-mentioned hot shock test tool, the fixing plate has a cooling through hole in communication with the cooling channel, and the cooling through hole is at least partially not blocked by the connecting piece when the connecting piece contacts the fourth side.

[0022] And / or, the connecting base has a fluid channel in communication with the cooling channel.

[0023] Optionally, in the above-mentioned hot shock test tool, the fixing plate comprises:

[0024] At least one grommet capable of sleeving on the outer wall of the center column, and the third side is a side of the grommet facing the second bottom plate.

[0025] A baffle capable of being sleeved on the positioning peg and being in contact with a side of the grommet opposite to the second bottom plate, the fourth side being a side of the baffle opposite to the grommet.

[0026] Optionally, in the above-mentioned hot impact test tool, the first connecting part is a first embedding groove, and one side of the test piece can be at least partially embedded in the first embedding groove.

[0027] And / or, the second connecting part is a second embedding groove, and the other side of the test piece can be at least partially embedded in the second embedding groove.

[0028] Optionally, in the above-mentioned hot impact test tool, the first bottom plate has a first layer plate and a second layer plate stacked with each other, the first side is a side of the first layer plate opposite to the second layer plate, the first layer plate has a first through hole and a first connecting hole penetrating through the thickness direction thereof, the first layer plate is connected with the second layer plate through the first connecting hole, and the second layer plate closes the end of the first through hole opposite to the first side to form the first embedding groove.

[0029] The second bottom plate has a third layer plate and a fourth layer plate stacked with each other, the second side is a side of the third layer plate opposite to the fourth layer plate, the third layer plate has a second through hole and a second connecting hole penetrating through the thickness direction thereof, the third layer plate is connected with the fourth layer plate through the second connecting hole, and the fourth layer plate closes the end of the second through hole opposite to the second side to form the second embedding groove.

[0030] Optionally, in the above-mentioned hot impact test tool, the depth of the first embedding groove and / or the second embedding groove is 3-10 mm.

[0031] And / or, the hot impact test tool is made of stainless steel material.

[0032] The application further provides a hot impact test method, which applies the hot impact test tool according to any one of the above-mentioned claims, and comprises the following steps:

[0033] The hot impact test tool is connected with a test device table, and at least two test pieces are installed on the hot impact test tool.

[0034] The hot impact test tool drives the at least two test pieces to rotate at a constant speed, so that all the test pieces are uniformly heated and reach a target temperature.

[0035] After a certain period of heat preservation, the test pieces are cooled to complete the hot impact test operation.

[0036] As can be seen from the above technical solution, the thermal shock testing fixture provided by the present invention connects a first base plate and a second base plate through a connecting assembly, so that a space for placing the test specimen is formed between the first surface of the first base plate and the second surface of the second base plate. One side of the test specimen can be connected to the first connecting part located on the first surface, and the other side of the test specimen can be connected to the second connecting part located on the second surface, so that both sides of the test specimen are fixed respectively, facilitating thermal shock testing. Furthermore, since the first surface has at least two first connecting parts, and the second surface has at least two second connecting parts corresponding to the first connecting parts, at least two test specimens can be fixed between the first surface and the second surface, thereby facilitating simultaneous thermal shock testing of at least two test specimens and effectively improving testing efficiency.

[0037] The thermal shock testing method provided by this invention applies any of the thermal shock testing fixtures described above. Since the thermal shock testing fixtures described above have the above-mentioned technical effects, the thermal shock testing method using the thermal shock testing fixtures described above should also have the same technical effects, which will not be described in detail here. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 A three-dimensional structural schematic diagram of the tooling for thermal shock testing provided in an embodiment of the present invention;

[0040] Figure 2 An exploded structural diagram of the tooling for thermal shock testing provided in an embodiment of the present invention;

[0041] Figure 3 This is a right-side structural schematic diagram of the tooling for thermal shock testing provided in an embodiment of the present invention.

[0042] Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure along the AA plane in the middle;

[0043] Figure 5 for Figure 4 A schematic diagram of the cross-sectional structure along the BB surface in the middle;

[0044] Figure 6 for Figure 4 A schematic diagram of the cross-sectional structure along the CC plane.

[0045] in,

[0046] First bottom plate-1, first layer plate-11, first connecting part-111, first connecting hole-112, second layer plate-12, second bottom plate-2, third layer plate-21, second connecting part-211, second connecting hole-212, fourth layer plate-22, center column-3, connecting base-4, flange part-41, sleeve part-42, fixed plate-5, grommet-51, baffle-52, positioning bolt-6, test piece-7, connecting piece-8, mounting direction-X. DETAILED DESCRIPTION

[0047] The application discloses a tool for thermal shock test, and aims to improve test efficiency.

[0048] The technical solutions in the embodiments of the application will be apparently and completely described in connection with the drawings of the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments of the application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the protection scope of the application.

[0049] As shown in Figure 1 , Figure 2 , Figure 5 and Figure 6 , the application provides a tool for thermal shock test, which comprises a first bottom plate 1, a second bottom plate 2 and a connecting assembly. The first bottom plate 1 has a first face, and the first face has at least two first connecting parts 111 for connecting with one side of a test piece 7. The second bottom plate 2 has a second face opposite to the first face, and the second face has at least two second connecting parts 211 for connecting with the other side of the test piece 7. The second connecting parts 211 are correspondingly arranged with the first connecting parts 111. The connecting assembly connects the first bottom plate 1 and the second bottom plate 2.

[0050] The tool for thermal shock test provided by the application connects the first bottom plate 1 and the second bottom plate 2 through the connecting assembly, so that a space for placing the test piece 7 is formed between the first face of the first bottom plate 1 and the second face of the second bottom plate 2. One side of the test piece 7 can be connected with the first connecting parts 111 on the first face, and the other side of the test piece 7 can be connected with the second connecting parts 211 on the second face, so that the two sides of the test piece 7 are fixed respectively, and the thermal shock test is facilitated. In addition, the first face has at least two first connecting parts 111, the second face has at least two second connecting parts 211 and is correspondingly arranged with the first connecting parts 111, so that at least two test pieces 7 can be fixed between the first face and the second face, and the thermal shock test of the at least two test pieces 7 is facilitated simultaneously, and the test efficiency is improved effectively.

[0051] It can be understood that the connecting assembly connects the first bottom plate 1 and the second bottom plate 2, so that the first bottom plate 1 and the second bottom plate 2 can be moved by the movement of the connecting assembly, and at least two test samples 7 arranged between the first surface and the second surface can be moved synchronously. The movement of the first bottom plate 1 or the second bottom plate 2 can also be used to achieve the effect of moving at least two test samples 7 synchronously. By moving at least two test samples 7 synchronously, the specific position of at least two test samples 7 relative to the test device table is adjusted, so as to achieve the corresponding effect. For example, the position of the gas flame relative to different test samples 7 is adjusted, so that the plurality of test samples 7 are uniformly heated.

[0052] In the above embodiment, the first bottom plate 1 and the second bottom plate 2 can be annular bottom plates, and the central column 3 is located at the center of the first bottom plate 1 and the second bottom plate 2. The rotation of the central column 3 drives the first bottom plate 1 and the second bottom plate 2 to rotate, so that at least two test samples 7 rotate along the central column 3. Through the above arrangement, each test sample 7 can be covered by the gas flame, avoiding the local area (such as the central area) of the test sample 7 being affected by the concentrated flame, which can cause the local temperature of the test sample 7 to be too high, resulting in test errors, and effectively improving the test accuracy.

[0053] In some embodiments, the connecting assembly includes a central column 3 and a connecting base 4 for connecting with the test device table. The first bottom plate 1 and the second bottom plate 2 are connected with the outer wall of the central column 3, and the central column 3 has a cooling channel inside for the flow of cooling medium. The connecting base 4 is connected with one end of the central column 3. By flowing the cooling medium in the cooling channel of the central column 3, the heat exchange between the cooling medium and the central column 3 can be achieved, so as to reduce the temperature of the central column 3, and the heat transfer of the central column 3 can also indirectly cool the first bottom plate 1 and the second bottom plate 2. During the heating process of the thermal shock test tool caused by the heating of the gas flame on the test sample 7, the cooling medium flows in the cooling channel to cool the thermal shock test tool, thereby prolonging the service life of the thermal shock test tool.

[0054] As shown in Figure 3 and Figure 4 The central column 3 can be a hollow structure, and the hollow structure is the cooling channel. The central column 3 can also be other structures, and the cooling channel is a channel of any structure processed in the central column 3, such as a curved channel or a straight channel.

[0055] The connecting base 4 can include a flange part 41 for connecting with the test device table and a sleeve part 42 capable of being at least partially sleeved in the hollow structure of the center column 3 to facilitate the connection of the connecting base 4 with one end of the center column 3. The sleeve part 42 and the hollow structure of the center column 3 can be telescopic to facilitate the adjustment of the height of the thermal shock test tooling provided by the embodiment of the application. Of course, the sleeve part 42 and the center column 3 can also be fixedly connected.

[0056] In addition, the cooling of the thermal shock test tooling by the cooling medium can reduce the high-temperature resistance requirement of the material for manufacturing the thermal shock test tooling, and a lower-priced material such as stainless steel can be used to manufacture the thermal shock test tooling, so as to reduce the cost of the thermal shock test tooling provided by the embodiment of the application.

[0057] In order to improve the versatility and facilitate the assembly of the test piece 7, the first bottom plate 1 is fixedly connected with the outer wall of the center column 3, and the second bottom plate 2 can be sleeved on the center column 3 from the other end of the center column 3 and is in sliding cooperation with the center column 3; the connecting assembly further includes a limiting structure detachably connected with the other end of the center column 3, which can be adjusted in position along the extension direction of the center column 3 and is in limiting contact with the side of the second bottom plate 2 away from the first bottom plate 1.

[0058] Since the first bottom plate 1 is fixedly connected with the outer wall of the center column 3, the second bottom plate 2 can be sleeved on the center column 3 from the other end of the center column 3 and is in sliding cooperation with the center column 3, so that the distance between the first bottom plate 1 and the second bottom plate 2 (the first side and the second side) can be adjusted to match test pieces 7 of different sizes. Among them, the sizes of the test pieces 7 in the same group of tests can be the same, and the sizes (the distance from one side to the other side) of the test pieces 7 in different groups of tests can be different. That is, the distance between the first side and the second side can be adjusted to the size of the test piece 7 in the corresponding group of tests by adjusting the position of the second bottom plate 2 on the center column 3, so that one side of the test piece 7 can be connected with the first connecting part 111 located on the first side and the other side of the test piece 7 can be connected with the second connecting part 211 located on the second side, thereby completing the assembly of the test piece 7 relative to the thermal shock test tooling.

[0059] Taking the test piece 7 as a composite material plate as an example, the size of the test piece 7 can be 45-100 mm in length, 25-40 mm in width, and 2-4 mm in thickness. Among them, the length direction of the test piece 7 is the arrangement direction from one side to the other side of the test piece 7.

[0060] For the convenience of disassembly, the limiting structure can include a connecting piece 8, a positioning bolt 6 connected with the other end of the center column 3 and having an external thread, and a fixing plate 5 capable of penetrating the positioning bolt 6, wherein the second bottom plate 2 has a sleeving hole capable of penetrating the positioning bolt 6 and sleeving the outer wall of the center column 3; the fixing plate 5 has a third face and a fourth face opposite to each other, the third face is used to contact a face of the second bottom plate 2 away from the first bottom plate 1; the connecting piece 8 is threadedly matched with the positioning bolt 6 and capable of adjusting the position along the extension direction of the positioning bolt 6, and the connecting piece 8 is used to contact the fourth face.

[0061] The connecting piece 8 can be a nut, and the number of the nut can be multiple to improve the positioning effect.

[0062] As shown in FIG. 2, the tool for thermal shock test is assembled along the mounting direction X:

[0063] The connecting base 4 is connected with one end of the center column 3, the second bottom plate 2 is fixedly connected with the outer wall of the center column 3, and the first bottom plate 1 is sleeved on the outer wall of the center column 3, so that the test piece 7 to be tested can be assembled between the first bottom plate 1 and the second bottom plate 2, and the assembly of the test piece 7 to be tested is completed by the positioning of the second bottom plate 2 relative to the center column 3.

[0064] The positioning of the second bottom plate 2 relative to the center column 3 is completed by the connecting piece 8, the positioning bolt 6 and the fixing plate 5. The fixing plate 5 is contacted with a face of the second bottom plate 2 away from the first bottom plate 1 by penetrating the positioning bolt 6, the movement of the fixing plate 5 is limited by the connection of the connecting piece 8 and the positioning bolt 6, and the movement of the second bottom plate 2 along the center column 3 is limited in the case that the second face of the second bottom plate 2 is contacted with the test piece 7 to be tested.

[0065] In some embodiments, the fixing plate 5 has a cooling through hole in communication with the cooling channel, and the cooling through hole is at least partially unobstructed by the connecting piece 8 in the case that the connecting piece 8 is contacted with the fourth face. That is, the cooling medium can flow through the cooling through hole. By the above arrangement, the effect of the fixing plate 5 is further improved. The other end of the center column 3 can have a shielding plate, the positioning bolt 6 is connected with the shielding plate, and a through hole is formed in the shielding plate to facilitate the communication between the cooling channel and the cooling through hole.

[0066] The connecting base 4 can also have a fluid channel in communication with the cooling channel. That is, the cooling medium can flow through the fluid channel. By the above arrangement, the effect of the connecting base 4 is further improved.

[0067] The cooling through hole of the fixing plate 5 can be connected with one of the fluid channels of the connecting base 4 as an inlet structure of the cooling medium into the cooling channel of the center column 3, and the other as an outlet structure of the cooling medium out of the cooling channel of the center column 3. A circulating flow path can also be formed with a cooling device that provides the cooling medium to the outside to facilitate circulating cooling. For example, the inlet structure is connected with the outlet structure of the cooling device, and the outlet structure is connected with the inlet structure of the cooling device.

[0068] In order to facilitate the limiting of the second base plate 2 moving along the center column 3 to different positions by the fixing plate 5, the fixing plate 5 can include a baffle 52 and at least one grommet 51, the grommet 51 can be sleeved on the outer wall of the center column 3, and the third surface is the surface of the grommet 51 facing the second base plate 2; the baffle 52 can be sleeved on the positioning bolt 6 and in contact with the surface of the grommet 51 away from the second base plate 2, and the fourth surface is the surface of the baffle 52 away from the grommet 51. By increasing or decreasing the number of grommets 51, the position of the contact position between the fixing plate 5 and the second base plate 2 on the center column 3 can be adjusted. Different thicknesses of different grommets 51 can also be used to further improve the flexibility of adjustment.

[0069] In this embodiment, the cooling through hole of the fixing plate 5 is located on the baffle 52, and the baffle 52 has a mounting hole passing through the outside of the positioning bolt 6, and the number of cooling through holes can be multiple and distributed along the circumference of the mounting hole. Moreover, the hollow part of the grommet 51 can correspond to the cooling through hole and the mounting hole to avoid blocking the cooling through hole and the mounting hole.

[0070] Different sizes (structures) of the fixing plate 5 can also be provided, and the appropriate fixing plate 5 is selected according to the need for testing the test piece 7, so that the fixing plate 5 can contact the surface of the second base plate 2 away from the first base plate 1 when the test piece 7 is assembled between the first surface and the second surface, thereby limiting the movement of the second base plate 2 along the center column 3.

[0071] In order to facilitate the assembly of the test piece 7, the first connecting part 111 can be a first embedding slot, and one side of the test piece 7 can be at least partially embedded in the first embedding slot; and the second connecting part 211 is a second embedding slot, and the other side of the test piece 7 can be at least partially embedded in the second embedding slot. That is, the two sides of the test piece 7 are respectively embedded in the first embedding slot and the second embedding slot to complete the assembly of the test piece 7. Moreover, by embedding the two sides of the test piece 7 in the embedding slots, the stability of the test piece 7 can be further improved, and the damage of the test piece 7 caused by the aerodynamic load during the gas scouring process can be reduced, and the test result can be effectively improved.

[0072] Alternatively, one of the first connecting part 111 and the second connecting part 211 can be a recessed groove, and the other can be a snap-fit ​​structure or other connecting structure; or, both the first connecting part 111 and the second connecting part 211 can be snap-fit ​​structures or other connecting structures. These will not be elaborated upon here, and all are within the scope of protection.

[0073] like Figure 5 and Figure 6 As shown, in some embodiments, the first base plate 1 may have a first layer plate 11 and a second layer plate 12 that are stacked on top of each other. The first surface is the side of the first layer plate 11 facing away from the second layer plate 12. The first layer plate 11 has a first through hole and a first connecting hole 112 that penetrate its thickness direction. The first layer plate 11 is connected to the second layer plate 12 through the first connecting hole 112. The second layer plate 12 closes the end of the first through hole facing away from the first surface to form a first insert groove. Furthermore, the second base plate 2 has a third layer plate 21 and a fourth layer plate 22 that are stacked on top of each other. The second surface is the side of the third layer plate 21 facing away from the fourth layer plate 22. The third layer plate 21 has a second through hole and a second connecting hole 212 that penetrate its thickness direction. The third layer plate 21 is connected to the fourth layer plate 22 through the second connecting hole 212. The fourth layer plate 22 closes the end of the second through hole facing away from the second surface to form a second insert groove. With the above arrangement, it is possible to avoid machining blind holes on the base plate to serve as insert grooves, thereby facilitating the control of the depth of the insert groove.

[0074] Furthermore, versatility can be further improved. Taking the first base plate 1 having a first layer plate 11 and a second layer plate 12 as an example, the first layer plate 11 and the second layer plate 12 can be detachable structures. For example, the first connecting hole 112 is a through hole, and the second layer plate 12 has a corresponding threaded hole. The first layer plate 11 and the second layer plate 12 are connected by screws or other connecting parts. The number of first layer plates 11 can be multiple, and the number of first connecting parts 111 on different first layer plates 11 can be different. When the thermal shock testing fixture needs to test different numbers of test pieces 7, the first layer plate 11 with a corresponding number of first connecting parts 111 is selected and connected to the second layer plate 12.

[0075] Similarly, the third layer plate 21 and the fourth layer plate 22 of the second base plate 2 can also be detachable structures. There can be multiple third layer plates 21, and the number of second connecting parts 211 on different third layer plates 21 is different. Among them, the fourth layer plate 22 can be fixedly connected to the central column 3, while the third layer plate 21 can be detachably connected to the central column 3.

[0076] The depth of the first and / or second embedding slot is 3-10 mm, so as to reduce the thickness of the first and second bottom plates (e.g., greater than 10 mm and less than 15 mm) on the basis of meeting the assembly stability requirement of the test pieces 7, thereby avoiding excessive material consumption of the thermal shock test tooling and increasing the cost or difficulty of the test.

[0077] In the embodiment, the thermal shock test tooling is made of stainless steel. Other refractory materials can also be used, which are not specifically limited herein and are within the protection scope.

[0078] The embodiment of the application also provides a thermal shock test method using any of the thermal shock test toolings described above, which comprises the following steps:

[0079] Step S1: connecting the thermal shock test tooling with the test device table and installing at least two test pieces 7 in the thermal shock test tooling. In the embodiment in which the central column 3 has a cooling channel inside, the cooling channel can be communicated with a device for providing cooling medium, so as to make the cooling medium flow through the cooling channel.

[0080] Step S2: rotating the at least two test pieces 7 at a constant speed by the thermal shock test tooling, so as to uniformly heat and reach the target temperature of all the test pieces 7; the first and second bottom plates 1 and 2 can be annular bottom plates, and the central column 3 is located at the center of the first and second bottom plates 1 and 2, and the rotation of the central column 3 drives the first and second bottom plates 1 and 2 to rotate, so as to make the at least two test pieces 7 rotate along the central column 3. The uniform rotation of the central column 3 makes the at least two test pieces 7 pass through the flame jet (e.g., gas flame output port) with a fixed position at a constant speed, thereby improving the heating uniformity of the multiple test pieces 7.

[0081] Step S3: cooling the test pieces 7 after a certain period of time, and completing the thermal shock test operation.

[0082] The thermal shock test method provided by the embodiment of the application uses any of the thermal shock test toolings described above, and has the same technical effects as the thermal shock test tooling, which will not be described in detail herein.

[0083] The embodiments in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts of each embodiment can be referred to each other.

[0084] The foregoing description of the disclosed embodiments enables a person skilled in the art to make or use the application. Modifications of these embodiments will occur to persons of skill in the art, and that the appended claims are intended to cover all such modifications that do not depart from the true spirit and scope of the application. Therefore, the application is not limited to the embodiments shown but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A jig for thermal shock testing, characterized by, The utility model relates to a test fixture, which comprises: a first base plate (1) having a first face with at least two first connecting portions (111) for connecting with one side of a test piece (7) to be tested; a second base plate (2) having a second face opposite to the first face, the second face having at least two second connecting portions (211) for connecting with another side of the test piece (7) to be tested, the second connecting portions (211) being correspondingly arranged with the first connecting portions (111); a connecting assembly connecting the first base plate (1) and the second base plate (2).

2. The thermal shock test tooling of claim 1, wherein, The connecting assembly comprises: a central column (3) connected with the outer wall of the first base plate (1) and the second base plate (2), the central column (3) having a cooling channel inside for the flow of cooling medium; a connecting base (4) connected with one end of the central column (3) for connecting with a test device table.

3. The thermal shock test tooling of claim 2, wherein, The first base plate (1) is fixedly connected with the outer wall of the central column (3), and the second base plate (2) can be sleeved on the central column (3) from the other end of the central column (3) and is in sliding fit with the central column (3); The connecting assembly further comprises a limiting structure detachably connected with the other end of the central column (3), the limiting structure being capable of adjusting the position along the extension direction of the central column (3) and being in limiting contact with the face of the second base plate (2) away from the first base plate (1).

4. The thermal shock test tooling of claim 3, wherein, The limiting structure comprises: a positioning bolt (6) connected with the other end of the central column (3) and having an external thread, the second base plate (2) having a sleeving hole capable of passing through the positioning bolt (6) and sleeving on the outer wall of the central column (3); a fixing plate (5) capable of passing through the positioning bolt (6), the fixing plate (5) having a third face and a fourth face opposite to each other, the third face being used for contacting with the face of the second base plate (2) away from the first base plate (1); a connecting piece (8) threadedly fitted with the positioning bolt (6) and capable of adjusting the position along the extension direction of the positioning bolt (6), the connecting piece (8) being used for contacting with the fourth face.

5. The thermal shock test tooling of claim 4, wherein, The fixing plate (5) has a cooling through hole in communication with the cooling channel, and the cooling through hole is at least partially not blocked by the connecting piece (8) when the connecting piece (8) contacts with the fourth face; and / or, the connecting base (4) has a fluid channel in communication with the cooling channel.

6. The thermal shock test tooling of claim 4, wherein, The fixing plate (5) comprises: at least one grommet (51) capable of sleeving on the outer wall of the central column (3), the third face being a face of the grommet (51) facing the second base plate (2); a baffle (52) capable of sleeving on the positioning bolt (6) and contacting with the face of the grommet (51) away from the second base plate (2), the fourth face being a face of the baffle (52) away from the grommet (51).

7. The thermal shock test tooling of any one of claims 1-6, wherein, The first connecting part (111) is a first embedding slot, one side of the test sample (7) can be at least partially embedded in the first embedding slot; And / or, the second connecting part (211) is a second embedding slot, the other side of the test sample (7) can be at least partially embedded in the second embedding slot.

8. The thermal shock test tooling of claim 7, wherein, The first bottom plate (1) has a first layer plate (11) and a second layer plate (12) stacked with each other, the first surface is a surface of the first layer plate (11) facing away from the second layer plate (12), the first layer plate (11) has a first through hole and a first connecting hole (112) penetrating through the thickness direction thereof, the first layer plate (11) is connected with the second layer plate (12) through the first connecting hole (112), and the second layer plate (12) closes the end of the first through hole facing away from the first surface to form the first embedding slot; The second bottom plate (2) has a third layer plate (21) and a fourth layer plate (22) stacked with each other, the second surface is a surface of the third layer plate (21) facing away from the fourth layer plate (22), the third layer plate (21) has a second through hole and a second connecting hole (212) penetrating through the thickness direction thereof, the third layer plate (21) is connected with the fourth layer plate (22) through the second connecting hole (212), and the fourth layer plate (22) closes the end of the second through hole facing away from the second surface to form the second embedding slot.

9. The thermal shock test tooling of claim 7, wherein, The depth of the first embedding slot and / or the second embedding slot is 3-10 mm; And / or, the thermal shock test tool is made of stainless steel material.

10. A thermal shock test method characterized by, The application of the thermal shock test tool according to any one of claims 1-9, comprising: The thermal shock test tool is connected with the test device table, and at least two test samples (7) are installed on the thermal shock test tool; At least two test samples (7) are uniformly rotated by the thermal shock test tool, so that all test samples (7) are uniformly heated and reach the target temperature; After a certain period of time, the test sample (7) is cooled, and the thermal shock test operation is completed.

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