Cold inlaying mold and cold inlaying mold assembly for grinding-free and polishing-free sample with conductive path

Abstract

The utility model discloses a cold inlaying mold and a cold inlaying mold assembly for a grinding-free and polishing-free sample with a conductive path. The cold inlaying mold comprises a first mold body and a second mold body, wherein the first mold body is provided with a first cavity with an open top; the first boss, the cavity bottom fixedly arranged on the first cavity, the top table top of the first boss, the side face of the first boss and the first mold main body define a first mold cavity, the top table top of the first boss is used for bearing a sample, and the top table top of the first boss is further provided with at least one pit structure. The at least one pit structure is covered by the sample. The cold inlay mold can be used for exposing the grinding-free and polishing-free sample with the conductive path in a fixed area or a specific position, is simple in structure and convenient to operate, does not scratch or pollute the surface of the sample, can be repeatedly used, is low in sample preparation cost, reduces material consumption, and is also convenient for taking the sample out of the mold.

Description

Technical Field

[0001] The utility model particularly relates to a cold mounting mold and a cold mounting mold component for a grinding-free and polishing-free sample with a conductive path, belonging to the technical field of sample preparation auxiliary tools. Background Art

[0002] Tiny, difficult to hold or irregular metallographic and petrographic samples need to be mounted before observation under a metallographic microscope or electrochemical performance testing / scanning electron microscope characterization. Among them, the electrochemical test should determine the size of the sample's test area, so it is necessary to protect the rest of the area except the exposed area by mounting. In addition, when the scanning electron microscope is used in conjunction with an energy spectrometer to perform micro-area imaging and micro-area material composition analysis of the sample, the sample is required to be conductive, that is, the electrons gathered on the surface of the sample can be conducted away in time. Mounting is divided into hot mounting and cold mounting. Compared with hot mounting, cold mounting does not require special equipment and has the advantages of simple operation, low mounting cost and no thermal damage / pressure damage to the sample. Therefore, cold mounting plays a key role in the preparation of electrochemical tests and scanning electron microscope characterization samples.

[0003] Samples with conductive paths such as coated or smooth surfaces do not require grinding or polishing operations. They only require exposure of a specific area or region for electrochemical testing or scanning electron microscopy characterization. Existing mounting equipment or molds are all for samples that need to be grinded and polished, and the area of ​​samples exposed after grinding and polishing of irregular samples cannot be estimated, so the samples need to be cut to a specified size in advance. In addition, cold-mounted samples used for scanning electron microscopy analysis also need to expose the bottom surface of the sample on a grinding and polishing machine to make it conductive, which is time-consuming and labor-intensive. There is a lack of grinding-free and polishing-free sample equipment or molds with conductive paths that require exposing a fixed detection area on the sample surface or selectively exposing a specific position for electrochemical testing or scanning electron microscopy characterization. Utility Model Content

[0004] The main purpose of the utility model is to provide a cold mounting mold and a cold mounting mold assembly for grinding-free and polishing-free samples with conductive paths, which has a simple structure and is easy to operate. It can not only expose a fixed area / specific position of the grinding-free and polishing-free sample to form a lossless conductive path, but also can be reused, thereby overcoming the shortcomings of the prior art.

[0005] In order to achieve the above-mentioned utility model purpose, the technical solution adopted by the utility model includes:

[0006] A first aspect of an embodiment of the utility model provides a cold mounting mold, comprising:

[0007] a first mold body having a first cavity with an open top;

[0008] The first boss is fixedly arranged on the bottom of the first cavity, and the top surface and side surfaces of the first boss are combined with the first mold body to form a first mold cavity. The top surface of the first boss is used to carry the sample, and the top surface of the first boss is also provided with at least one pit structure. When the sample is placed on the top surface of the first boss, at least one of the pit structures is covered by the sample.

[0009] The second aspect of the utility model provides a cold mounting mold, comprising:

[0010] a second mold body having a second cavity with an open top;

[0011] a second boss fixedly disposed on the bottom of the second cavity, the second boss and the second mold body enclosing a second mold cavity, and

[0012] A plurality of partition plates, wherein the plurality of partition plates are fixedly arranged on the side surface of the second boss at intervals along the circumference of the second boss, and the partition plates are also in contact with the side wall of the second cavity;

[0013] A positioning column, the bottom end surface of which is fixedly arranged on the top surface of the second boss.

[0014] The third aspect of the embodiment of the utility model provides a cold mounting mold assembly for a grinding-free and polishing-free conductive path sample, comprising: a first mold and a second mold, the first mold is the cold mounting mold, and the second mold is the cold mounting mold.

[0015] Compared with the prior art, the advantages of the utility model include: a cold mounting mold for a grind-free and conductive path sample provided by an embodiment of the utility model can be used to expose a grind-free and conductive path sample with a fixed area or a specific position, and the cold mounting mold for a grind-free and conductive path sample has a simple structure, is easy to operate, does not scratch or contaminate the sample surface, can be reused, has a low sample preparation cost, reduces material consumption, and is convenient for removing the sample from the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of a first mold provided in a typical implementation case of the utility model;

[0018] Figure 2 It is a schematic diagram of the axial cross-sectional structure of the first mold provided in a typical implementation case of the utility model;

[0019] Figure 3 It is a top view of a first mold provided in a typical implementation case of the utility model;

[0020] Figure 4 It is a structural schematic diagram of a second mold provided in a typical implementation case of the utility model;

[0021] Figure 5 It is a schematic diagram of the axial cross-sectional structure of the second mold provided in a typical implementation case of the utility model;

[0022] Figure 6 It is a top view of the second mold provided in a typical implementation case of the utility model. DETAILED DESCRIPTION

[0023] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the utility model after long-term research and extensive practice. The technical solution, its implementation process and principle will be further explained as follows.

[0024] In order to solve the problem of exposing a fixed area or specific area of ​​a grinding-free and polishing-free sample such as a coating and being conductive, a cold mounting method is preferably used to mount a grinding-free and polishing-free sample with a conductive path. The cold mounting mold assembly for a grinding-free and polishing-free sample with a conductive path provided by the embodiment of the utility model can not only expose a fixed area / specific position of a grinding-free and polishing-free sample such as a coating, realize lossless conductivity of the sample, but also be reused.

[0025] A first aspect of an embodiment of the utility model provides a cold mounting mold, comprising:

[0026] a first mold body having a first cavity with an open top;

[0027] The first boss is fixedly arranged on the bottom of the first cavity, and the top surface and side surfaces of the first boss are combined with the first mold body to form a first mold cavity. The top surface of the first boss is used to carry the sample, and the top surface of the first boss is also provided with at least one pit structure. When the sample is placed on the top surface of the first boss, at least one of the pit structures is covered by the sample.

[0028] Furthermore, the pit structure of the top surface of the first boss corresponds to the area of ​​the sample to be exposed, which can improve the accuracy of the sample exposure area and the sample sealing performance.

[0029] Furthermore, the area of ​​the bottom table of the first boss is greater than the area of ​​the top table but less than or equal to the area of ​​the bottom of the first cavity.

[0030] Furthermore, the first boss is a truncated cone structure or a prism structure.

[0031] Furthermore, the side surface of the first boss is gap-matched with the cavity wall of the first cavity, and the top surface of the first boss is located on a side of the top opening of the first cavity close to the first cavity.

[0032] Furthermore, the height of the first boss is smaller than the depth of the first cavity.

[0033] Furthermore, the first mold body includes a first fixed wall and a first base, the first fixed wall is arranged on the first base, the first fixed wall and the first base are combined to form the first cavity, and the first boss is fixedly arranged on the first base.

[0034] Furthermore, the first fixed wall is detachably connected to the first base.

[0035] Furthermore, the first fixed wall is an annular structure.

[0036] The second aspect of the utility model provides a cold mounting mold, comprising:

[0037] a second mold body having a second cavity with an open top;

[0038] a second boss fixedly disposed on the bottom of the second cavity, the second boss and the second mold body enclosing a second mold cavity, and

[0039] A plurality of partition plates, wherein the plurality of partition plates are fixedly arranged on the side surface of the second boss at intervals along the circumference of the second boss, and the partition plates are also in contact with the side wall of the second cavity;

[0040] A positioning column, the bottom end surface of which is fixedly arranged on the top surface of the second boss.

[0041] Furthermore, the plurality of partition plates are distributed at equal angles, and further, the thickness of the partition plates is 1 to 2 mm.

[0042] Furthermore, the partition plate is also in contact with the bottom of the second cavity.

[0043] Furthermore, in the axial direction of the second boss, the height of the partition plate is equal to the height of the second boss.

[0044] Furthermore, the top surface of the positioning post and the opening of the second cavity are located in the same plane.

[0045] Furthermore, the sum of the heights of the positioning column and the second boss is less than or equal to the depth of the second cavity.

[0046] Furthermore, the area of ​​the bottom surface of the second boss is greater than the area of ​​the top surface but less than or equal to the area of ​​the bottom surface of the second cavity.

[0047] Furthermore, the top surface of the second boss is of the same shape and area as the bottom surface of the positioning column. Furthermore, the positioning column is a cylindrical structure, and the diameter of the positioning column does not exceed 3 mm.

[0048] Furthermore, the second boss is a truncated cone structure or a prism structure.

[0049] Furthermore, the second mold body includes a second fixed wall and a second base, the second fixed wall is arranged on the second base, the second fixed wall and the second base are combined to form the second cavity, and the second boss is fixedly arranged on the second base.

[0050] Furthermore, the second fixed wall is detachably connected to the second base.

[0051] Furthermore, the second fixed wall is an annular structure.

[0052] The third aspect of the embodiment of the utility model provides a cold mounting mold assembly for a grinding-free and polishing-free conductive path sample, comprising: a first mold and a second mold, the first mold is the cold mounting mold, and the second mold is the cold mounting mold.

[0053] The technical solution, its implementation process and principle will be further explained below in conjunction with the accompanying drawings and specific implementation cases.

[0054] See also Figure 1 and Figure 4 A cold mounting mold assembly for a grind-free and polish-free sample with a conductive path includes a first mold and a second mold that match each other. The first mold and the second mold cooperate with each other to expose a fixed area / specific position of the grind-free and polish-free sample to form a lossless conductive path and can be reused.

[0055] For details, please refer to Figure 1-Figure 6The first mold includes a first mold body and a first boss 3. The first mold body has a first cavity with an open top. The first boss 3 is fixedly arranged at the bottom of the first cavity. The top table and side of the first boss 3 are enclosed with the first mold body to form a first mold cavity. The top table of the first boss 3 is used to carry the sample. The top table of the first boss 3 is also provided with at least one pit structure; the second mold includes a second mold body, a second boss 6, a plurality of partition plates 7 and a positioning column 8. The second mold body has a second cavity with an open top. The second boss 6 is fixedly arranged at the bottom of the second cavity. The second mold cavity is enclosed between the second boss 6 and the second mold body. A plurality of partition plates 7 are fixedly arranged on the side of the second boss 6 at circumferential intervals along the second boss 6. The partition plates 7 are also fitted with the side walls and the bottom of the second cavity. The bottom end face of the positioning column 8 is fixedly arranged on the top table of the second boss 6.

[0056] Before sample inlaying, cold embedding material needs to be injected into the second mold to make a test block for pressing the sample. Subsequently, the sample is placed on the top surface of the first boss 3 of the first mold, with the intended exposed surface of the sample facing the top end surface of the first boss 3 and placed horizontally. The wire that fits the sample is led out of the test block hole, and the test block is placed above the sample. The top end surface of the first boss 3 of the sample is pressed by the weight of the test block itself. Then, the configured cold embedding material is injected into the second mold. After static solidification is completed, the first mold is squeezed and the sample is taken out.

[0057] Specifically, the first mold body includes a first fixed wall 2 and a first base 1, the first fixed wall 2 is arranged on the first base 1, the first fixed wall 2 and the first base 1 are enclosed to form a first cavity, and the first boss 3 is fixedly arranged on the first base 1, that is, the bottom table surface of the first boss 3 is fixedly combined with the first boss 3. More specifically, the first fixed wall 2 is an annular structure. Exemplarily, the first fixed wall 2 is a circular ring structure. It can be understood that the surface of the first fixed wall 2 facing the first cavity is the cavity wall of the first cavity, and the surface of the first base 1 facing the first cavity is the cavity bottom of the first cavity. More specifically, the first fixed wall 2 and the first base 1 are detachably connected, and exemplary, the first fixed wall 2 and the first base 1 can be connected by mortise and tenon connection.

[0058] Specifically, the first boss 3 is a solid structure. More specifically, the first fixed wall 2, the first base 1, and the first boss 3 may be made of rubber, plastic, ceramic, or metal. Exemplarily, the first fixed wall 2, the first base 1, and the first boss 3 may be silicone components with smooth surfaces.

[0059] Specifically, the area of ​​the bottom table of the first boss 3 is greater than the area of ​​the top table and less than or equal to the area of ​​the bottom of the first cavity. More specifically, the first boss 3 is a truncated cone structure or a prism structure. More specifically, the side of the first boss 3 is in clearance with the cavity wall of the first cavity, and the top table of the first boss 3 is located on the side of the top opening of the first cavity close to the first cavity.

[0060] Specifically, the height of the first boss 3 is less than the depth of the first cavity. More specifically, the first fixed wall 2 and the first boss 3 are arranged on the same surface of the first base 1 , and accordingly, the height of the first boss 3 is less than the height of the first fixed wall 2 .

[0061] Exemplarily, the first mold body is a cylindrical structure, the first boss 3 is a truncated cone structure, the pit structure on the top surface of the first boss 3 is a circular ring structure, and the pit structure is preferably coaxially arranged with the first boss 3. Preferably, the pit structure can be a circular ring, an elliptical ring or a polygonal ring structure. The diameter of the first base 1 is 30 mm, the thickness is 3 mm, the height of the first fixed wall 2 is 20 mm, the thickness is 3 mm, the diameter of the bottom surface of the first boss 3 is 15 mm, the diameter of the top surface is 10 mm, and the height is 2 mm. The outer ring diameter of the pit structure is 10 mm, the inner ring diameter is 8 mm, and the depth is 0.5 mm.

[0062] Specifically, the second mold body includes a second fixed wall 5 and a second base 4, the second fixed wall 5 is arranged on the second base 4, the second fixed wall 5 and the second base 4 are enclosed to form a second cavity, and the second boss 6 is fixedly arranged on the second base 4, that is, the bottom table of the second boss 6 is fixedly combined with the second boss 6. More specifically, the second fixed wall 5 is an annular structure. Exemplarily, the second fixed wall 5 is a circular ring structure. It can be understood that the surface of the second fixed wall 5 facing the second cavity is the cavity wall of the second cavity, and the surface of the second base 4 facing the second cavity is the cavity bottom of the second cavity. More specifically, the second fixed wall 5 and the second base 4 are detachably connected, and exemplary, the second fixed wall 5 and the second base 4 can be connected by mortise and tenon connection.

[0063] Specifically, the radial dimension of the first cavity is greater than the radial dimension of the second cavity, and the depth of the first cavity is greater than the depth of the second cavity.

[0064] Specifically, the second boss 6 and the positioning column 8 are both solid structures. More specifically, the second fixed wall 5, the second base 4, the second boss 6, the partition plate 7, and the positioning column 8 can be made of rubber, plastic, ceramic, or metal. Exemplarily, the second fixed wall 5, the second base 4, the second boss 6, the partition plate 7, and the positioning column 8 can be silicone components with smooth surfaces.

[0065] Specifically, the area of ​​the bottom table of the second boss 6 is greater than the area of ​​the top table but less than or equal to the area of ​​the bottom table of the second cavity. More specifically, the second boss 6 is a truncated cone structure or a prism structure. More specifically, the side of the second boss 6 is in clearance with the cavity wall of the second cavity, and the top table of the second boss 6 is located on the side of the top opening of the second cavity close to the second cavity. More specifically, the height of the second boss 6 is less than the depth of the second cavity. More specifically, the second fixed wall 5 and the second boss 6 are arranged on the same surface of the second base 4, and accordingly, the height of the second boss 6 is less than the height of the second fixed wall 5.

[0066] Specifically, in the circumferential direction of the second boss 6, a plurality of partition plates 7 are distributed at equal angles, and in the radial direction of the second boss 6, the width of the partition plates 7 and the spacing between the side surface of the second boss 6 and the cavity wall of the second cavity are equal, and the partition plates 7 are preferably fitted with the side wall of the second boss 6 and the cavity wall of the second cavity without gap. More specifically, in the axial direction of the second boss 6, the height of the partition plates 7 is equal to the height of the second boss 6.

[0067] Specifically, the top end surface of the positioning column 8 and the cavity opening of the second cavity are located in the same plane. More specifically, the sum of the heights of the positioning column 8 and the second boss 6 is less than or equal to the depth of the second cavity. More specifically, the bottom end surface of the positioning column 8 and the top surface of the second boss 6 have the same shape and area.

[0068] Exemplarily, the second mold body is a cylindrical structure, the second boss 6 is a truncated cone structure, the second base 4 has a diameter of 25 mm and a thickness of 3 mm, the second fixed wall 5 has a height of 15 mm and a thickness of 3 mm, the bottom table of the second boss 6 has a diameter of 20 mm, the top table has a diameter of 3 mm, and the height is 4 mm.

[0069] Specifically, when in use, first use the second mold to prefabricate the sample test block, and the operation steps are as follows: pour the prepared cold embedding material into the second mold, so that the top surface of the solid positioning column 8 is higher than the liquid level of the cold embedding material to form a prefabricated test block. Then stick a wire on the upper surface of the sample, place the lower surface of the sample horizontally on the top table of the first boss 3 of the first mold, and lead the wire out of the circular hole of the test block (the circular hole corresponds to the positioning column 8 of the second mold), and buckle the concave side of the test block (corresponding to the second boss 6) downward on the top of the sample to ensure that the lower surface of the sample is tightly fitted with the top table of the first boss 3, and then inject the prepared cold embedding material into the first mold, let it stand until the embedding material is completely solidified, and squeeze the first base 1 of the first mold from the outside by hand to demold the sample, and remove impurities on the inner surface of the mold for next use.

[0070] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be realized by the existing technology, which will not be described here. The above embodiments and drawings are only used to illustrate the technical solution of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation mode. It should be understood by ordinary technicians in this field that the changes, modifications or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not deviate from the present invention. In short, it should also fall within the scope of protection of the claims of the present invention.

Claims

1. A cold mounting mold, characterized in that: include: a first mold body having a first cavity with an open top; The first boss is fixedly arranged on the bottom of the first cavity, and the top surface and side surfaces of the first boss are combined with the first mold body to form a first mold cavity. The top surface of the first boss is used to carry the sample, and the top surface of the first boss is also provided with at least one pit structure. When the sample is placed on the top surface of the first boss, at least one of the pit structures is covered by the sample.

2. The cold mounting mold according to claim 1, characterized in that: The area of ​​the bottom table of the first boss is larger than the area of ​​the top table but smaller than or equal to the area of ​​the bottom of the first cavity; and / or the first boss is a truncated cone structure or a prism structure.

3. The cold mounting mold according to claim 1 or 2, characterized in that: The side surface of the first boss is in gap fit with the cavity wall of the first cavity, and the top surface of the first boss is located at a side of the top opening of the first cavity close to the first cavity; And / or, the height of the first boss is smaller than the depth of the first cavity.

4. The cold mounting mold according to claim 1, characterized in that: The first mold body includes a first fixed wall and a first base, the first fixed wall is arranged on the first base, the first fixed wall and the first base are enclosed to form the first cavity, and the first boss is fixedly arranged on the first base; and / or, the first fixed wall is detachably connected to the first base; And / or, the first fixed wall is an annular structure.

5. A cold mounting mold, characterized in that: include: a second mold body having a second cavity with an open top; a second boss fixedly disposed on the bottom of the second cavity, the second boss and the second mold body enclosing a second mold cavity, and A plurality of partition plates, wherein the plurality of partition plates are fixedly arranged on the side surface of the second boss at intervals along the circumference of the second boss, and the partition plates are also in contact with the side wall of the second cavity; A positioning column, the bottom end surface of which is fixedly arranged on the top surface of the second boss.

6. The cold mounting mold according to claim 5, characterized in that: The plurality of partition plates are distributed at equal angles; And / or, the partition plate is also in contact with the bottom of the second cavity; And / or, in the axial direction of the second boss, the height of the partition plate is equal to the height of the second boss.

7. The cold mounting mold according to claim 5, characterized in that: The top surface of the positioning column and the opening of the second cavity are located in the same plane; And / or, the sum of the heights of the positioning column and the second boss is less than or equal to the depth of the second cavity.

8. The cold mounting mold according to claim 5 or 7, characterized in that: The area of ​​the bottom table of the second boss is larger than the area of ​​the top table but smaller than or equal to the area of ​​the bottom of the second cavity; And / or, the top surface of the second boss is the same in shape and area as the bottom end surface of the positioning column; And / or, the second boss is a truncated cone structure or a prism structure.

9. The cold mounting mold according to claim 5, characterized in that: The second mold body comprises a second fixed wall and a second base, the second fixed wall is arranged on the second base, the second fixed wall and the second base are enclosed to form the second cavity, and the second boss is fixedly arranged on the second base; and / or, the second fixed wall is detachably connected to the second base; And / or, the second fixed wall is an annular structure.

10. A cold mounting mold assembly for a sample with a conductive path without grinding or polishing, characterized in that: include: A first mold and a second mold, wherein the first mold is the cold mounting mold according to any one of claims 1 to 4, and the second mold is the cold mounting mold according to any one of claims 5 to 9.

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