Batch test piece tool for thermal shock loading test

Abstract

The utility model discloses a batch test piece tool for a thermal shock loading test. The batch test piece tool comprises a test mold main body and a push rod, a lower push rod hole and an upper push rod groove are sequentially formed in the test mold body from bottom to top, the lower push rod hole is communicated with the upper push rod groove, the top of the upper push rod groove is communicated with the outside, the lower push rod hole and the upper push rod groove are formed in the length direction of the test mold body, and test piece supporting strips are arranged on the inner walls of the two sides of the upper push rod groove. A plurality of test pieces or a plurality of groups of test pieces can be placed in the upper push rod groove on the test mold main body, the thermal shock test of the test pieces in batches can be realized, the push rod matched with the test mold main body is also arranged, and the push rod can continuously move and push out to push out the test pieces on the foremost side in sequence. Therefore, the test piece subjected to the thermal shock test is pushed to a next test link.

Description

Technical Field

[0001] The utility model relates to the field of thermal shock tests of ceramic materials, in particular to a batch test piece tooling for thermal shock loading tests. Background Art

[0002] High-temperature ceramics have attracted considerable attention due to their excellent physical and chemical stability in harsh environmental conditions such as high temperatures and the presence of oxygen. Current research indicates that high-temperature ceramics are one of the materials most likely to meet the thermal protection requirements of hypersonic vehicles.

[0003] In traditional ultra-high temperature material thermal shock resistance testing, creating the target high temperature environment takes a long time (usually >3 hours to achieve an environment above 1600°C), and generally only one specimen can be tested at a time. Therefore, it is necessary to propose a batch specimen tooling that can conduct thermal shock tests in batches and improve test efficiency. Summary of the Invention

[0004] In view of the above-mentioned deficiencies in the prior art, the utility model provides a batch test piece tooling for thermal shock loading tests that can perform batch thermal shock and have higher test efficiency.

[0005] In order to achieve the above-mentioned purpose of the invention, the technical solution adopted by the utility model is: it includes a test mold body and a push rod; the test mold body is provided with a lower push rod hole and an upper push rod groove from bottom to top, the lower push rod hole is connected to the upper push rod groove, and the top of the upper push rod groove is connected to the outside, the lower push rod hole and the upper push rod groove are arranged along the length direction of the test mold body, and the inner walls on both sides of the upper push rod groove are provided with specimen support bars.

[0006] Furthermore, the upper push rod groove includes a specimen sliding section and a push rod guide sliding section connected in sequence, and the push rod guide sliding section is arranged on a side close to the push rod.

[0007] Furthermore, the width of the specimen sliding section is greater than the width of the push rod guide sliding section, and the width of the specimen sliding section is greater than or equal to the width of the specimen.

[0008] Furthermore, a push rod guide portion is provided at the open end of the push rod guide sliding section.

[0009] Furthermore, fixed edges are provided on both sides of the test mold body. The test mold body and the fixed edges are designed as one piece. A plurality of fixed openings are provided on each fixed edge, and the fixed openings are semicircular.

[0010] Furthermore, the push rod includes a push rod body that cooperates with the lower push rod hole, a guide head is provided on the front side of the push rod body, a specimen push strip that cooperates with the upper push rod groove is provided on the top of the push rod body, and a mounting hole is provided on the rear side of the push rod body.

[0011] Furthermore, the cross section of the guide head is in the shape of an isosceles trapezoid, and the specimen pushing strip is a linear convex strip.

[0012] Furthermore, the test mold body and the push rod are both made of graphite.

[0013] Furthermore, the specimen support bar is integrally formed with the test mold body.

[0014] The beneficial effects of the utility model are:

[0015] The utility model can place multiple or multiple groups of test pieces in the upper push rod groove on the test mold body, which can realize the thermal shock test of batch test pieces. A push rod that cooperates with the test mold body is also provided. The push rod can be continuously moved and pushed out, and the test pieces located at the front side are pushed out one by one, thereby pushing the test pieces that have completed the thermal shock test to the next test link.

[0016] The push rod of the utility model is provided with a linear convex strip, and the test piece can be pushed out through the front side of the linear convex strip. The front side of the linear convex strip pushes the rear test piece to achieve the pushing of all test pieces. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 Schematic diagram of the structure of the test mold body Figure 1 ;

[0019] Figure 3 Schematic diagram of the structure of the test mold body in another direction Figure 2 ;

[0020] Figure 4 Schematic diagram of the structure of the push rod;

[0021] The symbols of the components are as follows:

[0022] 1. Test mold body; 11. Upper push rod hole; 111. Specimen sliding section; 112. Push rod guide sliding section; 113. Push rod guide part;

[0023] 12. Lower push rod hole; 13. Specimen support bar; 14. Fixed edge; 15. Fixed opening;

[0024] 2. Push rod; 21. Push rod body; 22. Guide head; 23. Linear rib; 24. Mounting hole; 3. Test piece. DETAILED DESCRIPTION

[0025] The specific implementation methods of the present invention are described below to facilitate understanding of the present invention by those skilled in the art. However, it should be clear that the present invention is not limited to the scope of the specific implementation methods. For those skilled in the art, as long as various changes are within the spirit and scope of the present invention as defined and determined by the appended claims, these changes are obvious, and all utility model creations using the concept of the present invention are protected.

[0026] like Figure 1 As shown, the batch specimen fixture for the thermal shock loading test includes a test mold body 1 and a push rod 2. The test mold body 1 and the push rod 2 are preferably made of graphite. The test mold body 1 is provided with a lower push rod hole 12 and an upper push rod groove 11 from bottom to top. The lower push rod hole 12 is connected to the upper push rod groove 11, and the top of the upper push rod groove 11 is connected to the outside. The lower push rod hole 12 and the upper push rod groove 11 are arranged along the length of the test mold body 1. The inner walls of both sides of the upper push rod groove 11 are provided with a specimen support bar 13. The specimen support bar 13 and the test mold body 1 are integrally formed. The upper push rod groove 11 cooperates with the specimen support bar 13 to achieve bottom support and position limiting for the specimen 3. At the same time, it is convenient to push the specimen 3 that has undergone the thermal shock test out of the batch specimen fixture and to facilitate the delivery of the specimen 3 in front of the upper push rod groove 11 to the next test step. The test mold body 1 and the push rod 2 are preferably made of graphite. The physical and chemical properties of graphite are relatively stable under high temperature conditions.

[0027] like Figure 2 and 3 As shown, the upper push rod slot 11 includes a specimen sliding section 111 and a push rod guide sliding section 112, which are connected in sequence. The push rod guide sliding section 112 is provided on the side close to the push rod 2. The width of the specimen sliding section 111 is greater than the width of the push rod guide sliding section 112, and the width of the specimen sliding section 111 is greater than or equal to the width of the specimen 3. The open end of the push rod guide sliding section 112 is also provided with a push rod guide portion 113. The push rod guide portion 113 is in the form of a guiding slope, which facilitates the guidance of the push rod 2 into the upper push rod slot 11 and the lower push rod hole 12.

[0028] The test mold body 1 is provided with fixed edges 14 on both sides. The test mold body 1 and the fixed edges 14 are integrally designed. Each fixed edge 14 is provided with several semicircular fixed openings 15. In this embodiment, each fixed edge 14 is preferably provided with three fixed openings 15, which are evenly distributed on the outside of the fixed edge 14. By using the fixed edges 14 and fixed openings 15 on both sides of the test mold body 1, combined with graphite bolts, the test mold body 1 can be secured to the desired test platform or test chamber, facilitating thermal shock testing of batches of test specimens 3.

[0029] like Figure 4As shown, the push rod 2 includes a push rod body 21 that cooperates with the lower push rod hole 12, a guide head 22 is provided on the front side of the push rod body 21, a specimen push strip 23 that cooperates with the upper push rod groove 11 is provided on the top of the push rod body 21, and a mounting hole 24 is provided on the rear side of the push rod body 21. The cross-section of the guide head 22 is an isosceles trapezoidal shape, and the specimen push strip 23 is a linear convex strip. The function of the specimen push strip 23 is to drive the specimen 3 in the upper push rod groove 11 to slide out together, thereby sending the specimen that has passed the thermal shock test to the next test link. The isosceles trapezoidal guide head 22 cooperates with the push rod guide part 113 to facilitate the guiding operation of the push rod 2. The mounting hole 24 can connect the push rod 2 to telescopic equipment such as an electric telescopic rod and a hydraulic telescopic rod to achieve telescopic movement of the push rod 2. The push rod body 21 slides in the lower push rod hole 12, and the specimen push strip 23 slides on the upper push rod groove 11. The push rod body 21 can push out the specimen 3 on the front side of the push rod groove 11 through the specimen push strip 23, thereby sending the specimen 5 on the front side of the upper push rod groove 11 to the next test link, realizing batch testing of the thermal shock test of the specimen 3, and greatly improving the thermal shock test efficiency of the specimen 3.

[0030] Working process and principle: Before the thermal shock test, place the test pieces 3 one by one in the upper push rod groove 11, or put two test pieces 3 together and then place them in the test piece 3, as shown in the figure. Figure 1 . Adjust the test temperature of the thermal shock equipment so that the batch test piece tooling and the test piece 3 are within the thermal shock temperature range to realize the thermal shock test of the test piece 3, and then push the test piece 3 located at the front side of the upper push rod groove 11 along the open end of the test piece sliding section 111 through the push rod 2, so that the pushed test piece 3 enters the next test link, and the push rod 2 can continuously push the material, so that the batch test piece tooling cooperates with the thermal shock equipment to realize the batch thermal shock test of the test piece, greatly improving the efficiency of the thermal shock test. The thermal shock equipment referred to in this patent can be a large-span high-temperature gas flushing thermal shock test device at an initial temperature in patent document CN117686368A, a large-span initial and target temperature instantaneous thermal shock loading test device in patent document CN117705628A, an aerospace vehicle thermal protection material assembly line thermal shock loading test device in patent document CN117705627A, an instantaneous thermal shock loading test device with adjustable oxygen partial pressure in patent document CN117723428A, etc.

Claims

1. A batch specimen tooling for thermal shock loading test, characterized in that: It comprises a test mold body (1) and a push rod (2); The test mold body (1) is provided with a lower push rod hole (12) and an upper push rod groove (11) in sequence from bottom to top, the lower push rod hole (12) is connected to the upper push rod groove (11), the top of the upper push rod groove (11) is connected to the outside, the lower push rod hole (12) and the upper push rod groove (11) are arranged along the length direction of the test mold body (1), and the inner walls on both sides of the upper push rod groove (11) are provided with specimen support bars (13).

2. The batch specimen fixture for thermal shock loading test according to claim 1, characterized in that: The upper push rod groove (11) comprises a test piece sliding section (111) and a push rod guide sliding section (112) connected in sequence, and the push rod guide sliding section (112) is arranged on a side close to the push rod (2).

3. The batch specimen fixture for thermal shock loading test according to claim 2, characterized in that: The width of the specimen sliding section (111) is greater than the width of the push rod guide sliding section (112), and the width of the specimen sliding section (111) is greater than or equal to the width of the specimen (5).

4. The batch specimen fixture for thermal shock loading test according to claim 2, characterized in that: The open end of the push rod guide sliding section (112) is also provided with a push rod guide portion (113).

5. The batch specimen jig for thermal shock loading test according to claim 1, characterized in that: The push rod (2) includes a push rod body (21) that cooperates with the lower push rod hole (12), a guide head (22) is provided on the front side of the push rod body (21), a specimen push strip (23) that cooperates with the upper push rod groove (11) is provided on the top of the push rod body (21), and a mounting hole (24) is provided on the rear side of the push rod body (21).

6. The batch specimen fixture for thermal shock loading test according to claim 5, characterized in that: The cross section of the guide head (22) is in the shape of an isosceles trapezoid, and the specimen pushing strip (23) is a linear convex strip.

7. The batch specimen jig for thermal shock loading test according to claim 1, characterized in that: Both sides of the test mold body (1) are provided with fixed edges (14), the test mold body (1) and the fixed edges (14) are designed as one piece, and each of the fixed edges (14) is provided with a plurality of fixed openings (15), and the fixed openings (15) are semicircular.

8. The batch specimen jig for thermal shock loading test according to claim 1, characterized in that: The test mold body (1) and the push rod (2) are both made of graphite.

9. The batch specimen jig for thermal shock loading test according to claim 1, characterized in that: The specimen support bar (13) is integrally formed with the test mold body (1).

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