A thermal shock test tool and a thermal shock test method

Abstract

The application discloses a hot impact test tool and a hot impact test method. The hot impact test tool comprises a first bottom plate, the first bottom plate has a first surface, the first surface has at least two first connecting parts for connecting one side of a test piece; a second bottom plate, the second bottom plate has a second surface opposite to the first surface, the second surface has at least two second connecting parts for connecting the other side of the test piece, and the second connecting parts can be arranged correspondingly with the first connecting parts; and a connecting assembly, the connecting assembly connects the first bottom plate and the second bottom plate. The hot impact test tool provided by the application can facilitate the hot impact test of at least two test pieces at the same time, thereby effectively improving the test efficiency.

Description

Technical Field

[0001] This invention relates to the field of thermal shock testing equipment technology, and in particular to a tooling for thermal shock testing and a thermal shock testing method. Background Technology

[0002] Thermal shock testing is used to test a product's adaptability to rapid changes in ambient temperature. It can be applied to product components such as composite material panels.

[0003] Composite materials consist of a continuous phase matrix and reinforcing materials. The matrix of composite materials is broadly classified into two categories: metallic and non-metallic. Commonly used metallic matrices include aluminum, magnesium, titanium, and their alloys, while non-metallic matrices mainly include resins, ceramics, and carbon. Reinforcing materials primarily refer to continuous fibers, including high-performance fibers such as carbon fiber, aramid fiber, and silicon carbide fiber. Due to their advantages such as high specific strength, high specific modulus, designable mechanical properties, resistance to high (low) temperatures, and corrosion resistance, composite materials are widely used in airframe structures, engine components, thermal protection systems, and other parts in the aerospace and aviation industries. However, in practical applications, composite materials often have to withstand the thermal shock effects of rapid temperature changes; therefore, thermal shock resistance is a crucial performance indicator for composite materials used as structural components.

[0004] Currently, existing technologies for testing the thermal shock resistance of composite materials typically involve mounting composite material sheet specimens in a testing fixture, evaluating one specimen at a time, and fixing it to the front end of a flame nozzle for testing. This type of testing process is time-consuming, labor-intensive, and inefficient.

[0005] Therefore, how to improve experimental efficiency is a problem that urgently needs to be solved by personnel in this technical field. Summary of the Invention

[0006] In view of this, the present invention provides a tooling for thermal shock testing to improve testing efficiency. The present invention also provides a method for thermal shock testing.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A fixture for thermal shock testing, comprising:

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

[0010] The second base plate has a second surface opposite to the first surface. The second surface has at least two second connecting portions for connecting to the other side of the test piece. The second connecting portions can be correspondingly provided with the first connecting portions.

[0011] A connecting component that connects the first base plate and the second base plate.

[0012] Optionally, in the above-mentioned thermal shock testing fixture, the connecting assembly includes:

[0013] A central column, the first base plate and the second base plate are connected to the outer wall of the central column, and the interior of the central column has a cooling channel for the flow of cooling medium;

[0014] A connecting base for connecting to the test apparatus platform, the connecting base being connected to one end of the central column.

[0015] Optionally, in the above-mentioned thermal shock test fixture, the first base plate is fixedly connected to the outer wall of the central column, and the second base plate can be sleeved through the other end of the central column and slidably fitted with the central column;

[0016] The connecting assembly also includes a limiting structure detachably connected to the other end of the central column. The limiting structure is adjustable in position along the extension direction of the central column and makes limiting contact with the side of the second base plate facing away from the first base plate.

[0017] Optionally, in the above-mentioned tooling for thermal shock testing, the limiting structure includes:

[0018] A positioning bolt connected to the other end of the central column and having external threads; the second base plate has a sleeve hole that can pass through the positioning bolt and be sleeved on the outer wall of the central column.

[0019] A fixing plate that can pass through the positioning bolt, the fixing plate having a third and a fourth opposing side, the third side being used to contact the side of the second base plate opposite to the first base plate;

[0020] A connector that is threadedly engaged with the positioning bolt and whose position can be adjusted along the extension direction of the positioning bolt, the connector being used to contact the fourth surface.

[0021] Optionally, in the above-mentioned thermal shock test fixture, the fixing plate has a cooling through hole communicating with the cooling channel, and when the connector is in contact with the fourth surface, the cooling through hole is at least partially not blocked by the connector;

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

[0023] Optionally, in the above-mentioned fixture for thermal shock testing, the fixing plate includes:

[0024] At least one washer ring, the washer ring being able to be fitted onto the outer wall of the central column, the third side being the side of the washer ring facing the second base plate;

[0025] A baffle is provided, which can be fitted onto the positioning bolt and contacts the side of the washer facing away from the second base plate, and the fourth side is the side of the baffle facing away from the washer.

[0026] Optionally, in the above-mentioned tooling for thermal shock testing, the first connecting part is a first insert groove, and one side of the test piece can be at least partially embedded in the first insert groove;

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

[0028] Optionally, in the above-mentioned tooling for thermal shock testing, the first base plate has a first layer plate and a second layer plate that are stacked on each other, the first surface is the side of the first layer plate facing away from the second layer plate, the first layer plate has a first through hole and a first connecting hole that penetrates its thickness direction, the first layer plate is connected to the second layer plate through the first connecting hole, and the second layer plate closes the end of the first through hole facing away from the first surface to form the first insert groove.

[0029] The second base plate has a third layer plate and a fourth layer plate that are stacked on top of each other. The second surface is the side of the third layer plate that faces away from the fourth layer plate. The third layer plate has a second through hole and a second connecting hole that penetrate its thickness direction. The third layer plate is connected to the fourth layer plate through the second connecting hole. The fourth layer plate closes the end of the second through hole that faces away from the second surface to form the second insert groove.

[0030] Optionally, in the above-mentioned tooling for thermal shock testing, the depth of the first insert groove and / or the second insert groove is 3~10mm;

[0031] And / or, the tooling for the thermal shock test is made of stainless steel.

[0032] The present invention also provides a thermal shock testing method, using the thermal shock testing fixture described in any one of the above claims, comprising:

[0033] The thermal shock testing fixture is connected to the test apparatus, and at least two test pieces are installed on the thermal shock testing fixture.

[0034] The thermal shock test fixture drives at least two of the test pieces to rotate at a constant speed so that all the test pieces are heated evenly and reach the target temperature.

[0035] After maintaining the temperature for a period of time, the test specimen is cooled to complete the thermal shock test.

[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 base plate-1, first layer plate-11, first connecting part-111, first connecting hole-112, second layer plate-12, second base 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, fixing plate-5, washer-51, baffle-52, positioning bolt-6, test piece-7, connecting piece-8, installation direction-X. Detailed Implementation

[0047] This invention discloses a fixture for thermal shock testing to improve testing efficiency. This invention also provides a method for thermal shock testing.

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, this embodiment of the invention provides a tooling for thermal shock testing, including a first base plate 1, a second base plate 2, and a connecting assembly. The first base plate 1 has a first surface with at least two first connecting portions 111 for connecting to one side of the test specimen 7. The second base plate 2 has a second surface opposite to the first surface with at least two second connecting portions 211 for connecting to the other side of the test specimen 7. The second connecting portions 211 can be correspondingly provided with the first connecting portions 111. The connecting assembly connects the first base plate 1 and the second base plate 2.

[0050] The thermal shock testing fixture provided in this embodiment of the invention connects a first base plate 1 and a second base plate 2 via a connecting assembly, forming a space between the first surface of the first base plate 1 and the second surface of the second base plate 2 for placing the test specimen 7. One side of the test specimen 7 can be connected to a first connecting portion 111 located on the first surface, and the other side of the test specimen 7 can be connected to a second connecting portion 211 located on the second surface, thus fixing both sides of the test specimen 7 for thermal shock testing. Furthermore, since the first surface has at least two first connecting portions 111 and the second surface has at least two second connecting portions 211 corresponding to the first connecting portions 111, at least two test specimens 7 can be fixed between the first and second surfaces, facilitating simultaneous thermal shock testing of at least two test specimens 7 and effectively improving testing efficiency.

[0051] It is understood that the connecting assembly connects the first base plate 1 and the second base plate 2. Therefore, the movement of the connecting assembly can drive the first base plate 1 and the second base plate 2 to move, and can also drive at least two test specimens 7 assembled between the first and second surfaces to move synchronously. The synchronous movement of at least two test specimens 7 can also be achieved by moving either the first base plate 1 or the second base plate 2. By driving at least two test specimens 7 to move synchronously, the specific positions of at least two test specimens 7 relative to the test apparatus stage can be adjusted to achieve the desired effect. For example, adjusting the position of the gas flame relative to different test specimens 7 can ensure that multiple test specimens 7 are heated evenly.

[0052] The design allows both the first base plate 1 and the second base plate 2 to be annular, with the central column 3 located at the center of both plates. The rotation of the central column 3 causes the first base plate 1 and the second base plate 2 to rotate, resulting in at least two test specimens 7 rotating along the central column 3. This configuration ensures that each test specimen 7 is covered by the gas flame, preventing the flame from concentrating on a localized area (such as the central area) of the test specimen 7 and causing excessively high local temperatures, thus improving test accuracy.

[0053] In some embodiments, the connecting assembly includes a central column 3 and a connecting base 4 for connecting to the test apparatus platform. A first base plate 1 and a second base plate 2 are connected to the outer wall of the central column 3, and the central column 3 has a cooling channel for the flow of a cooling medium. The connecting base 4 is connected to one end of the central column 3. By introducing a cooling medium into the cooling channel of the central column 3, heat exchange between the cooling medium and the central column 3 is achieved, thereby reducing the temperature of the central column 3. Furthermore, the heat transfer from the central column 3 indirectly cools the first base plate 1 and the second base plate 2. During the process of heating the test piece 7 by a gas flame, causing the thermal shock test fixture to heat up, the flow of the cooling medium in the cooling channel facilitates the cooling of the thermal shock test fixture, thereby improving its service life.

[0054] like Figure 3 and Figure 4 As shown, the central column 3 can be a hollow structure, which serves as the cooling channel. Alternatively, the central column 3 can have other structures, with the cooling channel being any structure machined within the central column 3, such as a curved channel or a straight channel.

[0055] The connecting base 4 may include a flange 41 and a sleeve 42. The flange 41 is used to connect to the test apparatus platform, and the sleeve 42 can be at least partially fitted into the hollow structure of the central column 3 to facilitate the connection between the connecting base 4 and one end of the central column 3. The sleeve 42 and the hollow structure of the central column 3 can be telescopically fitted to adjust the height of the thermal shock testing fixture provided in this embodiment of the invention. Alternatively, the sleeve 42 can be fixedly connected to the central column 3.

[0056] Furthermore, by cooling the tooling for thermal shock testing with a cooling medium, the high-temperature resistance requirement of the materials used to manufacture the tooling for thermal shock testing can be reduced. Lower-priced materials, such as stainless steel, can be used to manufacture the tooling for thermal shock testing, thereby reducing the cost of the tooling for thermal shock testing provided in the embodiments of the present invention.

[0057] To improve versatility and facilitate the assembly of the test piece 7, the first base plate 1 is fixedly connected to 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 slide in cooperation with the central column 3; the connecting assembly also includes a limiting structure that is detachably connected to the other end of the central column 3, the limiting structure can be adjusted in position along the extension direction of the central column 3 and limit contact with the side of the second base plate 2 facing away from the first base plate 1.

[0058] Since the first base plate 1 is fixedly connected to the outer wall of the central column 3, the second base plate 2 can be inserted through the other end of the central column 3 and slide in cooperation with the central column 3, so that the distance between the first base plate 1 and the second base plate 2 (the first surface and the second surface) can be adjusted to match test specimens 7 of different sizes. Multiple test specimens 7 in the same group of tests can have the same size, while the size (distance from one side to the other side) of the test specimens 7 in different groups of tests can be different. That is, by adjusting the position of the second base plate 2 on the central column 3, the distance between the first surface and the second surface can be adjusted to correspond to the size of the test specimen 7 in the corresponding group of tests, so that one side of the test specimen 7 can be connected to the first connecting part 111 located on the first surface and the other side of the test specimen 7 can be connected to the second connecting part 211 located on the second surface, thereby completing the assembly of the test specimen 7 relative to the thermal shock testing fixture.

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

[0060] For ease of assembly and disassembly, the limiting structure may include a connector 8, a positioning bolt 6 connected to the other end of the central column 3 and having external threads, and a fixing plate 5 that can pass through the positioning bolt 6. The second base plate 2 has a sleeve hole that can pass through the positioning bolt 6 and be sleeved on the outer wall of the central column 3. The fixing plate 5 has a third side and a fourth side facing away from each other. The third side is used to contact the side of the second base plate 2 that faces away from the first base plate 1. The connector 8 is threadedly engaged with the positioning bolt 6 and can be adjusted in position along the extension direction of the positioning bolt 6. The connector 8 is used to contact the fourth side.

[0061] The connector 8 can be a nut, and there can be multiple nuts to improve the positioning effect.

[0062] As shown in Figure 2, the fixture for thermal shock testing is assembled along the installation direction X:

[0063] Connect one end of the connecting base 4 to the center column 3, and fix the first base plate 1 to the outer wall of the center column 3. Sleeve the first base plate 1 onto the outer wall of the center column 3. In this state, the test piece 7 can be assembled between the first base plate 1 and the second base plate 2. The assembly of the test piece 7 is completed by positioning the second base plate 2 relative to the center column 3.

[0064] The positioning of the second base plate 2 relative to the central column 3 is accomplished by the connector 8, the positioning bolt 6, and the fixing plate 5. The fixing plate 5 passes through the positioning bolt 6 and contacts the side of the second base plate 2 that is away from the first base plate 1. The movement of the fixing plate 5 is restricted by the connection between the connector 8 and the positioning bolt 6. When the second side of the second base plate 2 contacts the test piece 7, the movement of the second base plate 2 along the central column 3 is restricted.

[0065] In some embodiments, the fixing plate 5 has a cooling through hole communicating with the cooling channel, and when the connector 8 is in contact with the fourth surface, the cooling through hole is at least partially unobstructed by the connector 8. That is, the cooling medium can flow through the cooling through hole. The above arrangement further improves the effect of the fixing plate 5. The other end of the central column 3 may have a baffle plate, the positioning bolt 6 is connected to the baffle plate, and the baffle plate has a through hole to facilitate the connection between the cooling channel and the cooling through hole.

[0066] The connecting base 4 can also be equipped with a fluid channel communicating with the cooling channel. That is, the cooling medium can flow through the fluid channel. These features further enhance the performance of the connecting base 4.

[0067] The cooling through-hole of the fixed plate 5 and the fluid channel of the connecting base 4 can be configured such that one serves as the inlet structure for the cooling medium to enter the cooling channel of the central column 3, and the other serves as the outlet structure for the cooling medium to flow out of the cooling channel of the central column 3. It can also form a circulating flow path with external cooling equipment that provides the cooling medium, facilitating circulating cooling. For example, the inlet structure can be connected to the outlet structure of the cooling equipment, and the outlet structure can be connected to the inlet structure of the cooling equipment.

[0068] To facilitate the limiting of the second base plate 2, which moves along the central column 3 to different positions, the fixing plate 5 may include a baffle 52 and at least one washer 51. The washer 51 can be sleeved on the outer wall of the central column 3, with its third side facing the second base plate 2. The baffle 52 can be sleeved on the positioning bolt 6 and contacts the side of the washer 51 facing away from the second base plate 2, with its fourth side facing away from the washer 51. By increasing or decreasing the number of washer 51, the position of the contact point between the fixing plate 5 and the second base plate 2 on the central column 3 can be adjusted. Different washer 51s can also have different thicknesses to further improve adjustment flexibility.

[0069] In this embodiment, the cooling through holes of the fixing plate 5 are located on the baffle 52. The baffle 52 has a mounting hole in the middle that passes through the positioning bolt 6. There can be multiple cooling through holes distributed circumferentially along the mounting hole. Furthermore, the hollow portion of the gasket 51 can correspond to the cooling through holes and the mounting hole to avoid obstructing the cooling through holes and the mounting hole.

[0070] Fixing plates 5 of different sizes (structures) can also be set. The appropriate fixing plate 5 can be selected according to the test piece 7 to be tested. When the test piece 7 is assembled between the first surface and the second surface, the fixing plate 5 can contact the side of the second base plate 2 facing away from the first base plate 1, thereby restricting the movement of the second base plate 2 along the central column 3.

[0071] To facilitate the assembly of the test piece 7, the first connecting portion 111 can be a first insert groove, allowing one side of the test piece 7 to be at least partially embedded in the first insert groove; and the second connecting portion 211 can be a second insert groove, allowing the other side of the test piece 7 to be at least partially embedded in the second insert groove. That is, both sides of the test piece 7 are respectively embedded in the first insert groove and the second insert groove to complete the assembly of the test piece 7. Furthermore, by embedding insert grooves on both sides of the test piece 7, the stability of the test piece 7 can be further improved, reducing the possibility of breakage or other damage due to aerodynamic loads during the gas scouring process, effectively improving the test results.

[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 insert groove is 3 to 10 mm, so that while meeting the assembly stability requirements of the test piece 7, the thickness of the first base plate 1 and the second base plate 2 can be reduced (e.g., greater than 10 mm and less than 15 mm), thereby avoiding excessive material usage for the tooling used in the thermal shock test, which would increase costs or increase the difficulty of the test.

[0077] In this embodiment, the tooling for the thermal shock test is made of stainless steel. Other refractory materials can also be used; no specific restrictions are imposed, and all are within the scope of protection.

[0078] This invention also provides a thermal shock testing method, using any of the thermal shock testing fixtures described above, including:

[0079] Step S1: Connect the thermal shock testing fixture to the test apparatus platform, and install at least two test specimens 7 onto the thermal shock testing fixture. In embodiments where the central column 3 of the thermal shock testing fixture has a cooling channel inside, the cooling channel can be connected to a device that provides the cooling medium, so that the cooling medium can flow along the cooling channel.

[0080] Step S2: The thermal shock test fixture drives at least two test specimens 7 to rotate at a uniform speed, ensuring that all test specimens 7 are heated evenly and reach the target temperature. The first base plate 1 and the second base plate 2 can be annular base plates, with the central column 3 located at the center of the first base plate 1 and the second base plate 2. The rotation of the central column 3 drives the first base plate 1 and the second base plate 2 to rotate, thereby causing at least two test specimens 7 to rotate along the central column 3. The uniform rotation of the central column 3 allows at least two test specimens 7 to pass uniformly through a relatively fixed flame nozzle (such as a gas flame outlet), thus improving the uniformity of heating of the multiple test specimens 7.

[0081] Step S3: After keeping it at a certain temperature for a period of time, cool the test piece 7 to be tested to complete the thermal shock test.

[0082] The thermal shock testing method provided in this embodiment of the 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.

[0083] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0084] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tooling for thermal shock testing, characterized in that, include: A first base plate (1) has a first surface, the first surface having at least two first connecting portions (111) for connecting to one side of the test piece (7). The second base plate (2) has a second surface opposite to the first surface. The second surface has at least two second connecting portions (211) for connecting to the other side of the test piece (7). The second connecting portions (211) can be correspondingly provided with the first connecting portion (111). A connecting component connects the first base plate (1) and the second base plate (2) so that a space is formed between the first surface of the first base plate (1) and the second surface of the second base plate (2) for placing the test specimen (7); The connection component includes: The central column (3), the first base plate (1) and the second base plate (2) are connected to the outer wall of the central column (3), and the central column (3) has a cooling channel inside for the flow of cooling medium; A connecting base (4) for connecting to the test apparatus platform, the connecting base (4) being connected to one end of the central column (3); The first base plate (1) is fixedly connected to the outer wall of the central column (3), and the second base plate (2) can be sleeved through the other end of the central column (3) and slide in cooperation with the central column (3); The connecting assembly also includes a limiting structure that is detachably connected to the other end of the central column (3). The limiting structure is adjustable in position along the extension direction of the central column (3) and makes limiting contact with the side of the second base plate (2) facing away from the first base plate (1). The limiting structure includes: A positioning bolt (6) connected to the other end of the central column (3) and having external threads; the second base plate (2) has a sleeve hole that can pass through the positioning bolt (6) and be sleeved on the outer wall of the central column (3); A fixing plate (5) that can pass through the positioning bolt (6) has a third side and a fourth side facing away from each other. The third side is used to contact the side of the second base plate (2) facing away from the first base plate (1). A connector (8) is threadedly engaged with the positioning bolt (6) and its position can be adjusted along the extension direction of the positioning bolt (6). The connector (8) is used to contact the fourth surface. The fixing plate (5) has a cooling through hole communicating with the cooling channel. When the connector (8) is in contact with the fourth surface, the cooling through hole is at least partially not blocked by the connector (8). And / or, the connecting base (4) has a fluid passage communicating with the cooling channel; The fixing plate (5) includes: At least one washer (51) is provided, which can be fitted onto the outer wall of the central column (3), and the third side is the side of the washer (51) facing the second base plate (2); The baffle (52) can be sleeved on the positioning bolt (6) and contact the side of the washer (51) facing away from the second base plate (2), and the fourth side is the side of the baffle (52) facing away from the washer (51).

2. The tooling for thermal shock testing as described in claim 1, characterized in that, The first connecting part (111) is a first insert groove, and one side of the test piece (7) can be at least partially inserted into the first insert groove; And / or, the second connecting part (211) is a second insert groove, and the other side of the test piece (7) can be at least partially inserted into the second insert groove.

3. The tooling for thermal shock testing as described in claim 2, characterized in that, The first base plate (1) has a first layer plate (11) and a second layer plate (12) that are stacked on 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 the first insert groove. 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 the second insert groove.

4. The tooling for thermal shock testing as described in claim 2, characterized in that, The depth of the first and / or the second groove is 3 to 10 mm; And / or, the tooling for the thermal shock test is made of stainless steel.

5. A thermal shock test method, characterized in that, The tooling for thermal shock testing as described in any one of claims 1-4 includes: The thermal shock test fixture is connected to the test apparatus platform, and at least two test pieces (7) to be tested are installed on the thermal shock test fixture; The thermal shock test fixture drives at least two test pieces (7) to rotate at a constant speed so that all test pieces (7) are heated evenly and reach the target temperature. After heat preservation for a period of time, the test specimen (7) is cooled to complete the thermal shock test.

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