Cleaning and storage device for metal tensile fracture sample

Abstract

The utility model relates to the technical field of failure fracture analysis, in particular to a cleaning and storing device for a metal tensile fracture sample, which comprises a lower bottom and a lower bottom, the middle support bottom plate is arranged above the lower bottom and is connected with the lower bottom; the first limiting hole is formed in the middle support bottom plate and is matched with the neck of the fracture sample in size; the middle support is arranged above the middle support bottom plate, and the second limiting hole is formed in the middle support, located above the first limiting hole, communicated with the first limiting hole and matched with the fracture sample body in size. Through the limiting effect of the first limiting hole and the second limiting hole, adjacent fracture samples cannot collide with each other due to ultrasonic vibration in the horizontal direction, so that the fracture samples are prevented from being damaged; in the vertical direction, the fracture sample is overhung in the cleaning agent, it is guaranteed that only the fracture sample area needing to be represented is cleaned, and the situation that the cleaning agent is polluted due to overall cleaning of the fracture sample is avoided.

Description

Technical Field

[0001] This utility model relates to the field of failure fracture analysis technology, and in particular to a cleaning and storage device for metal tensile fracture specimens. Background Technology

[0002] Tensile testing is an important tool for testing the mechanical properties of materials (strength, elasticity, plasticity, toughness, strain hardening ability, etc.), studying material strengthening mechanisms, and analyzing material deformation mechanisms. It is widely used in materials research and development, material quality inspection, and engineering acceptance. The specimens used in tensile testing of metallic materials are plate-shaped or dumbbell-shaped, with strict regulations regarding shape and size. The fracture surface of a metallic tensile specimen after breaking under tension is called the fracture surface. Fracture surface analysis is a crucial method for analyzing the properties of metallic materials. By analyzing the fracture morphology, micro-area composition, crystallography, stress and strain, much important information can be obtained, such as: fracture cause, fracture nature, fracture mode, fracture mechanism, fracture toughness, stress state during fracture, crack propagation rate, etc. After many years of development, fracture science has become a mature discipline.

[0003] Before analysis and characterization, metal tensile test fracture specimens (hereinafter referred to as fracture specimens) need to be thoroughly cleaned of oil stains, dust, and other contaminants from the characterization area. For a long time, cleaning fracture specimens has typically involved completely immersing them in a beaker or similar container filled with cleaning agent, and then placing the entire container in an ultrasonic cleaner. This cleaning method not only has poor cleaning results but also easily damages the fracture specimens, and suffers from low cleaning efficiency and difficulty in marking and distinguishing specimens. These problems have hindered the analysis and characterization of fracture specimens, thus requiring effective improvements and solutions.

[0004] A domestic patent with publication number CN110512221A discloses a fracture surface cleaning system, method, and application. This system cleans deposits and oxides from boiler tube ruptures by rotating a brush on the fracture surface. It primarily targets boiler tube rupture fracture surfaces. However, this system cannot clean small-sized metal tensile fracture specimens, and the brush cleaning method can easily damage the specimens. Furthermore, deposits and oxides can remain in areas the brush cannot reach, resulting in poor cleaning effectiveness. In addition, the cleaning method in this patent involves indiscriminate brushing, which can cause contaminants from areas that do not require characterization to accumulate in the target areas, leading to inaccurate analysis. Therefore, a cleaning device that provides excellent cleaning results without damaging the fracture specimens is still lacking for cleaning small-sized standard metal tensile fracture specimens.

[0005] Therefore, this utility model provides a cleaning and storage device for metal tensile fracture specimens. Utility Model Content

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, this utility model provides a cleaning and storage device for metal tensile fracture specimens, thereby solving the technical problems of poor cleaning effect, easy damage to fracture specimens, low cleaning efficiency, and difficulty in marking and distinguishing specimens in the prior art for cleaning small-sized standard metal tensile fracture specimens. Furthermore, the existing cleaning methods also have the technical problem that dirt on areas of the fracture specimen that do not need to be characterized remains on the areas that need to be characterized during the cleaning process, leading to inaccurate analysis and characterization of the fracture specimen.

[0007] To achieve the above objectives, this utility model provides a cleaning and storage device for metal tensile fracture specimens, the cleaning and storage device comprising:

[0008] The bottom has an internal cavity; the middle support plate is located above the bottom and connected to it; the first limiting hole is opened in the middle support plate and is adapted to the size of the neck of the fracture specimen; the middle support is located above the middle support plate and is fixedly connected to it; the second limiting hole is opened in the middle support and located above the first limiting hole, communicates with the first limiting hole, and is adapted to the size of the body of the fracture specimen.

[0009] Optionally, the number of first limiting holes can be multiple, and the number of second limiting holes can be the same as the number of first limiting holes.

[0010] Optional, the top cover is located above the middle tray, and the top cover and the middle tray are connected by a snap fastener.

[0011] Optionally, sample-pressed foam is placed inside the top cover and connected to the inner wall of the top cover.

[0012] Optionally, the upper buckle assembly includes: an upper buckle hole, which is located on the side wall of the upper cover and connected to the side wall of the upper cover; and an upper buckle protrusion, which is located on the side wall of the middle support, and in the vertical direction, the position of the upper buckle protrusion corresponds to the position of the upper buckle hole; the upper buckle hole and the upper buckle protrusion are adapted to each other to realize the buckle connection.

[0013] Optionally, the lower latch assembly includes: a lower latch hole, which is located on the side wall of the lower bottom and connected to the side wall of the lower bottom; and a lower latch protrusion, which is located on the side wall of the middle support, and in the vertical direction, the position of the lower latch protrusion corresponds to the position of the lower latch hole; the lower latch hole and the lower latch protrusion are adapted to each other to achieve a latch connection.

[0014] Optionally, there are two upper buckle components, symmetrically arranged on both sides of the middle tray.

[0015] Optionally, there are two lower buckle components, symmetrically arranged on both sides of the middle tray.

[0016] The beneficial effects of this utility model are:

[0017] This invention provides a cleaning and storage device for metal tensile fracture specimens. A cleaning agent is placed in a receiving cavity at the bottom. A middle support plate is placed above the bottom, and a middle support is placed above the middle support plate. The middle support plate has a first limiting hole for placing the neck of the fracture specimen, and the middle support has a second limiting hole for placing the body of the fracture specimen. The second limiting hole is positioned above the first limiting hole, and the first and second limiting holes are connected. This arrangement ensures that each fracture specimen is securely suspended upside down in the cleaning agent through the first and second limiting holes. During the ultrasonic vibration process of the cleaning and storage device and the fracture sample placed inside, the limiting effect of the first and second limiting holes prevents adjacent fracture samples from colliding with each other in the horizontal direction due to ultrasonic vibration, thus avoiding damage to the fracture samples. In the vertical direction, since the fracture sample is suspended upside down in the cleaning agent, it ensures that only the area of ​​the fracture sample to be characterized is cleaned, avoiding contamination of the cleaning agent caused by cleaning the entire fracture sample. Furthermore, due to gravity, the dirt that falls off during cleaning will sink to the bottom of the cleaning agent and will not come into contact with the fracture sample again, ensuring the cleaning effect of the fracture sample after cleaning, thereby improving the characterization accuracy of the area of ​​the fracture sample to be characterized.

[0018] Furthermore, since the body of the fracture sample is located inside the middle support and will not come into contact with the cleaning agent contained at the bottom, it is convenient to mark each fracture sample with a marker. This helps to distinguish multiple fracture samples and effectively avoids confusion among multiple fracture samples.

[0019] Furthermore, when the fracture sample does not need to be cleaned, the cleaning and storage device of this invention can also be used to place the fracture sample, realize the storage and management of the fracture sample, effectively protect the integrity of the fracture sample, and avoid damage to the fracture sample.

[0020] Furthermore, by setting up upper and lower snap-fit ​​components, the upper snap hole of the upper cover and the upper snap protrusion of the middle tray are interlocked, and the middle tray and the middle tray base plate are fixedly connected. When the lower snap-fit ​​component is opened, the upper cover, middle tray, and middle tray base plate are tightly connected, thereby fixing the fracture sample between the upper cover and the middle tray. In this way, multiple fracture samples can be simultaneously dried using the cleaning and storage device of this invention, allowing for batch processing and improving the cleaning efficiency of multiple fracture samples. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the cleaning and storage device for metal tensile fracture specimens of this utility model.

[0022] Figure 2 This is a cross-sectional schematic diagram of the cleaning and storage device for metal tensile fracture specimens of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Top cover; 2. Middle support; 3. Middle support base plate; 4. Bottom; 5. Upper locking hole; 51. Upper locking protrusion; 6. Lower locking hole; 61. Lower locking protrusion; 7. Fracture sample; 8. Sample pressing foam; 9. Cleaning agent; 10. First limiting hole; 11. Second limiting hole. Detailed Implementation

[0025] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention can be understood more clearly and thoroughly, and that the scope of the present invention can be fully conveyed to those skilled in the art.

[0026] An embodiment of this utility model provides a cleaning and storage device for metal tensile fracture specimens, such as... Figure 1 and Figure 2 As shown, the cleaning and storage device includes: a lower base 4 with an internal receiving cavity; a middle support plate 3, positioned above and connected to the lower base 4; a first limiting hole 10, located on the middle support plate 3 and adapted to the size of the neck of the fracture sample 7; a middle support 2, positioned above the middle support plate 3 and fixedly connected to it; and a second limiting hole 11, located on the middle support 2 and above the first limiting hole 10, communicating with the first limiting hole 10 and adapted to the size of the body of the fracture sample 7.

[0027] For example, the cavity inside the bottom 4 is used to hold the cleaning agent 9. The depth of the bottom 4 is determined according to the size of the fracture sample 7, so that the area of ​​the fracture sample 7 to be characterized can be just submerged in the cleaning agent 9.

[0028] For example, the middle support plate 3 and the middle support 2 are integrally formed, and the middle support plate 3 and the lower base 4 are interlocked. With this configuration, after the middle support plate 3 and the lower base 4 are interlocked, the middle support 2, the middle support plate 3, and the lower base 4 are tightly connected. In the case of ultrasonic vibration cleaning, the cleaning agent 9 inside the lower base 4 will not spill out from the gap between the lower base 4 and the middle support plate 3 due to vibration.

[0029] For example, the size of the first limiting hole 10 is adapted to the neck of the fracture sample 7, and the size of the second limiting hole 11 is adapted to the body of the fracture sample 7. The first limiting hole 10 is at the bottom and the second limiting hole 11 is at the top, so that the fracture sample 7 is placed inside the first limiting hole 10 and the second limiting hole 11. The area on the fracture sample 7 that needs to be characterized is located in the receiving cavity of the bottom 4, so that the area on the fracture sample 7 that needs to be characterized is immersed in the cleaning agent 9.

[0030] In one possible embodiment, such as Figure 1 As shown, there are multiple first limiting holes 10, and the number of second limiting holes 11 is the same as the number of first limiting holes 10.

[0031] For example, in this embodiment, by setting multiple first limiting holes 10 and multiple second limiting holes 11, and the number of first limiting holes 10 and second limiting holes 11 is the same, with each first limiting hole 10 at the bottom and each second limiting hole 11 at the top, the cleaning and storage device in this embodiment can hold multiple broken sample 7.

[0032] In one possible embodiment, such as Figure 1 As shown, the upper cover 1 is located above the middle tray 2, and the upper cover 1 and the middle tray 2 are connected by a snap fastener.

[0033] For example, in this embodiment, by setting the upper cover 1 and the middle support 2 to be connected by a snap fastener, the upper cover 1 can be completely removed when the snap fastener is opened, making it convenient for the operator to take the fracture sample 7.

[0034] In one possible embodiment, such as Figure 1 and Figure 2 As shown, the sample-pressing foam 8 is placed inside the upper cover 1 and connected to the inner wall of the upper cover 1.

[0035] For example, by providing a sample-pressing foam 8 inside the upper cover 1, the fractured sample 7 is tightly attached between the upper cover 1 and the middle support 2 during the ultrasonic cleaning process of the cleaning and storage device in this embodiment. On the one hand, the sample-pressing foam 8 provides support for the fractured sample 7, filling the gap between the fractured sample 7 and the upper cover 1, ensuring that the fractured sample 7 is more stably fixed. On the other hand, the sample-pressing foam 8 has a certain degree of elasticity due to its material, making it easy to install or replace. Therefore, during the ultrasonic cleaning of the fractured sample 7, by installing the sample-pressing foam 8, the fractured sample 7 only rubs against the sample-pressing foam 8, thereby avoiding wear between the fractured sample 7 and the inner wall of the upper cover 1, which is more conducive to the long-term use of the cleaning and storage device.

[0036] In one possible embodiment, such as Figure 1 and Figure 2As shown, the upper buckle assembly includes: an upper buckle hole 5, which is disposed on the side wall of the upper cover 1 and connected to the side wall of the upper cover 1; an upper buckle protrusion 51, which is disposed on the side wall of the middle support 2, and in the vertical direction, the position of the upper buckle protrusion 51 corresponds to the position of the upper buckle hole 5; the upper buckle hole 5 and the upper buckle protrusion 51 are adapted to each other to realize the buckle connection.

[0037] For example, the upper locking hole 5 and the upper cover 1 are either bonded together or integrally formed. The upper locking hole 5 includes a connecting part, a bending part, and a locking hole, all three being integrally formed. The connecting part is fixedly connected to the upper cover 1, the bending part is connected to the connecting part, and the bending part can bend between a position near the middle support 2 and a position away from the middle support 2. The locking hole is formed on the bending part for snap-fit ​​connection with the upper locking protrusion 51 on the middle support 2. The locking hole and the upper locking protrusion 51 can be locked together, thereby achieving mutual adaptation between the upper locking hole 5 and the upper locking protrusion 51 to realize the snap-fit ​​connection.

[0038] In one possible embodiment, such as Figure 1 As shown, the lower latch assembly includes: a lower latch hole 6, which is disposed on the side wall of the lower base 4 and connected to the side wall of the lower base 4; and a lower latch protrusion 61, which is disposed on the side wall of the middle support 2, and in the vertical direction, the position of the lower latch protrusion 61 corresponds to the position of the lower latch hole 6; the lower latch hole 6 and the lower latch protrusion 61 are adapted to each other to realize the latch connection.

[0039] For example, the lower locking hole 6 and the lower base 4 are bonded together or integrally formed. The lower locking hole 6 includes a connecting part, a bending part, and a locking hole, which are integrally formed. The connecting part is fixedly connected to the lower base 4, the bending part is connected to the connecting part, and the bending part can bend between near and away from the middle support 2. The locking hole is formed on the bending part for snap-fit ​​connection with the lower locking protrusion 61 on the middle support 2. The locking hole and the lower locking protrusion 61 can be locked together, thereby realizing the mutual adaptation of the lower locking hole 6 and the lower locking protrusion 61 to achieve the snap-fit ​​connection.

[0040] In one possible embodiment, such as Figure 1 and Figure 2 As shown, there are two upper buckle components, which are symmetrically arranged on both sides of the middle support 2.

[0041] For example, the cleaning and storage device in this embodiment has a cuboid structure, and along the width direction of the cleaning and storage device, as shown... Figure 1As shown, two upper snap-fit ​​components are respectively located on the front and rear sides of the middle tray 2. The two upper snap-fit ​​components are symmetrically arranged and both are positioned in the middle of the front and rear sides of the cleaning and storage device. This arrangement ensures that the clamping force of the two upper snap-fit ​​components is more even, which is more conducive to ensuring a tight connection between the upper cover 1, the middle tray 2, and the middle tray base plate 3. During the ultrasonic cleaning oscillation, this helps to keep multiple fracture samples 7 stable and avoid damage to the fracture samples 7 caused by collisions between them. Furthermore, this arrangement also facilitates the simultaneous drying of multiple fracture samples 7 when multiple cleaned fracture samples 7 need to be dried. By clamping the upper snap-fit ​​components, the upper cover 1 and the middle tray 2 clamp the fracture samples 7, thereby improving cleaning efficiency and enabling faster characterization of the fracture samples 7.

[0042] In one possible embodiment, such as Figure 1 and Figure 2 As shown, there are two lower buckle components, which are symmetrically arranged on both sides of the middle support 2.

[0043] For example, the cleaning and storage device in this embodiment has a cuboid structure, and along the length of the cleaning and storage device, as shown... Figure 1 As shown, two lower latching components are respectively located on the left and right sides of the middle tray 2. The two lower latching components are symmetrically arranged and are both located in the middle of the left and right sides of the cleaning and storage device. This arrangement ensures that the clamping force of the two lower latching components is more even, which is more conducive to ensuring a tight connection between the bottom plate 3 of the middle tray and the bottom 4, and preventing the cleaning agent inside the bottom 4 from spilling out during the ultrasonic cleaning vibration.

[0044] This embodiment also provides an operating method for a cleaning and storage device for metal tensile fracture specimens, the specific operating steps of which include:

[0045] S1: Insert one or more marked fracture samples 7 that need to be cleaned into the second limiting hole 11 of the middle support 2 and the first limiting hole 10 of the middle support bottom plate 3;

[0046] S2: Tighten the upper buckle assembly to combine the upper cover 1 and the middle support 2 together. The upper cover 1, together with the sample pressing foam 8 and the middle support 2, firmly clamps the fracture sample 7 between the upper cover 1 and the middle support 2.

[0047] S3: Add cleaning agent 9 to the bottom 4 in advance, so that the cleaning agent 9 just submerges the area to be characterized of the fracture sample 7.

[0048] S4: The clamping lower buckle assembly combines the middle support 2, the middle support base plate 3, and the lower base 4 containing an appropriate amount of cleaning agent 9, so that the area to be characterized on the fracture sample 7 is just submerged in the cleaning agent 9.

[0049] S5: Place the entire cleaning and storage device into the ultrasonic cleaner and ultrasonically clean for 15-20 minutes before removing it from the ultrasonic cleaner.

[0050] S6: Open the lower latch assembly of the cleaning and storage device, but do not open the upper latch assembly. Turn the upper cover 1, middle tray 2, middle tray bottom plate 3 and fracture sample 7 as a whole over and use a fan to dry the area to be characterized on the fracture sample 7.

[0051] S7: Open the upper buckle assembly, remove the upper cover 1, take out the fracture sample 7 from the middle support 2, and observe and characterize it as soon as possible using a scanning electron microscope.

[0052] In this embodiment, the fracture samples 7 can be stacked in batches and suspended upside down above the bottom 4, so that the areas of the fracture samples 7 that need to be characterized are immersed in the cleaning agent. This method of cleaning only the areas of the fracture samples 7 that need to be characterized avoids contaminants from non-characterization areas entering the cleaning agent 9, and also effectively reduces the re-adhesion of contaminants to the areas of the fracture samples 7 that need to be characterized, thus preventing contamination of these areas and improving the cleaning effect of the fracture samples 7. Furthermore, due to the limiting effect of the first limiting hole 10 and the second limiting hole 11, multiple fracture samples 7 will not collide, thereby reducing the risk of damage to the fracture samples 7 due to collisions.

[0053] Furthermore, in this embodiment, only the fracture sample 7 area that needs to be characterized under an electron microscope is immersed in the cleaning agent 9, which makes it easier to mark and distinguish other parts of the fracture sample 7 and avoids mixing between multiple fracture samples 7.

[0054] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0055] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A cleaning and storage device for metal tensile fracture specimens, characterized in that, include: The bottom has an internal cavity for receiving the contents. A middle support plate is positioned above the lower base and connected to the lower base; The first limiting hole is opened in the middle support plate and is adapted to the size of the neck of the fracture sample; The middle support is positioned above the bottom plate of the middle support and is fixedly connected to the bottom plate of the middle support; The second limiting hole is opened in the middle support and is located above the first limiting hole. It is connected to the first limiting hole and is adapted to the size of the fracture sample body.

2. The cleaning and storage device for metal tensile fracture specimens as described in claim 1, characterized in that, The number of the first limiting holes is multiple, and the number of the second limiting holes is the same as the number of the first limiting holes.

3. The cleaning and storage device for metal tensile fracture specimens as described in claim 1, characterized in that, Also includes: The top cover is located above the middle tray, and the top cover and the middle tray are connected by a snap-fit.

4. The cleaning and storage device for metal tensile fracture specimens as described in claim 3, characterized in that, Also includes: The sample-pressing foam is placed inside the upper cover and connected to the inner wall of the upper cover.

5. The cleaning and storage device for metal tensile fracture specimens as described in claim 3, characterized in that, It also includes an upper snap-fit ​​assembly, the upper snap-fit ​​assembly comprising: The upper card hole is provided on the side wall of the upper cover and is connected to the side wall of the upper cover; An upper locking protrusion is provided on the side wall of the middle support, and in the vertical direction, the position of the upper locking protrusion corresponds to the position of the upper locking hole; The upper locking hole and the upper locking protrusion are adapted to each other to achieve a snap-fit ​​connection.

6. The cleaning and storage device for metal tensile fracture specimens as described in claim 5, characterized in that, It also includes a lower latch assembly, which comprises: A lower locking hole is provided on the side wall of the lower bottom and is connected to the side wall of the lower bottom; A lower locking protrusion is provided on the side wall of the middle support, and in the vertical direction, the position of the lower locking protrusion corresponds to the position of the lower locking hole; The lower locking hole and the lower locking protrusion are adapted to each other to achieve a snap-fit ​​connection.

7. The cleaning and storage device for metal tensile fracture specimens as described in claim 6, characterized in that, The number of upper buckle components is two, and they are symmetrically arranged on both sides of the middle tray.

8. The cleaning and storage device for metal tensile fracture specimens as described in claim 6, characterized in that, The number of lower buckle components is two, and they are symmetrically arranged on both sides of the middle tray.

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