Jig for measuring coating rate of composite board

Abstract

The utility model relates to the technical field of composite boards, in particular to a jig for measuring the coating rate of a composite board. The jig for measuring the coating rate of the composite board comprises a base and spacing pieces, the base is used for fixing pieces to be measured, the pieces to be measured are a plurality of samples which are vertically arranged on the base side by side in the thickness direction of the pieces to be measured and are separated by the spacing pieces in pairs, and the spacing pieces are attached to the large surfaces of the adjacent samples and are aligned in edge; therefore, after the surfaces of the sides, away from the base, of all the samples and the spacing pieces are subjected to grinding and polishing treatment and the like, the samples and the spacing pieces are flush and are sequentially and alternately arranged under a metallographic microscope. Therefore, the jig for measuring the coating rate of the composite board can be used for mounting a plurality of samples at one time, so that the detection efficiency is improved; meanwhile, the sample is separated by the spacer, so that the sample has a clear edge boundary under a metallographic microscope, and the measurement accuracy is ensured; and meanwhile, whether the abrasive surface of the sample is abraded eccentrically or not can be determined according to thickness measurement data of the spacer, so that the real thickness of the coating layer is obtained.

Description

Technical Field

[0001] This application relates to the field of composite board technology, and in particular to a fixture for measuring the coverage rate of composite boards. Background Technology

[0002] The cladding ratio of composite plates is an important indicator for evaluating their performance. It refers to the percentage of the thickness of the brazing filler layer on one side of the composite plate relative to its total thickness. Currently, the cladding ratio is typically measured using the metallographic microscopy method specified in YS / T69-2012 (Aluminum and Aluminum Alloy Composite Plates for Brazing). This method requires cutting a sample from the composite plate, embedding it in a fixed base, and then polishing the cross-section before observing and measuring the cladding thickness under a metallographic microscope. This method places high demands on sample preparation, requiring the cross-section of the sample to be perpendicular to its larger surfaces (i.e., the two surfaces along the thickness direction), and also requiring clear and distinct boundaries between the cross-sections.

[0003] In the case of mass production of composite panels, in order to ensure that the coverage rate of the composite panels meets the standards, multiple inspections of the coverage rate are required. However, when the samples are fixed by hot or cold mounting, the cross-section of the sample will produce burrs after subsequent grinding and polishing, resulting in unclear boundary lines between samples, which affects the accuracy of the measurement. Utility Model Content

[0004] The purpose of this invention is to provide a fixture for measuring the coating rate of composite plates, which can, to a certain extent, ensure clear cross-sectional boundaries between samples and improve the accuracy of coating rate measurement.

[0005] This utility model provides a fixture for measuring the coverage rate of composite plates, including a base and spacers;

[0006] The base is used to place and fix the test piece, which is a plurality of test pieces cut from the composite plate to be tested. The plurality of test pieces can be arranged side by side on the base along their own thickness direction, and any two adjacent test pieces are separated by the spacer.

[0007] The spacer is made of a different material than the sample, and the spacer is configured to have the same large surface shape and large surface size as the sample, so that when the spacer separates two adjacent samples, the large surface of the spacer is in contact with the large surface of the adjacent sample and the edges are aligned.

[0008] Furthermore, a limiting groove is formed on one side of the base, the limiting groove having a length along a first direction and a width along a second direction, the first direction being perpendicular to the second direction;

[0009] The sample can be inserted into the limiting groove perpendicularly to the bottom wall of the limiting groove, the thickness direction of the sample extends along the first direction, and the sample is limited between the two side walls in the second direction of the limiting groove.

[0010] Furthermore, the limiting groove is provided with a clamping member on at least one side in the first direction. The clamping member can be adjusted in position along the first direction to clamp the test piece inserted in the limiting groove within the limiting groove.

[0011] Furthermore, the side of the clamping member away from the test piece abuts against the side wall of the limiting groove through an elastic member. The elastic member can provide the clamping member with an elastic force along the first direction, so that the clamping member and the test piece elastically abut against each other.

[0012] Furthermore, the limiting groove has a guide hole on the side wall opposite to the clamping member, and the clamping member has a guide rod on the side away from the test piece. The guide rod is arranged along the first direction, one end of the guide rod is connected to the clamping member, and the other end of the guide rod is movably inserted into the guide hole along the first direction.

[0013] Furthermore, the clamping member has a driving member on the side opposite to the test piece, the driving member has a driving end that is retractable along the first direction, and the driving end of the driving member is connected to the clamping member.

[0014] Furthermore, the driving component is a cylinder or an electric push rod.

[0015] Furthermore, the side of the test piece facing away from the base is the detection surface of the test piece, and the surfaces of the base and the clamping member facing the detection surface are not higher than the detection surface.

[0016] Furthermore, the spacer is made of resin;

[0017] The base is made of resin;

[0018] The clamping component is made of resin.

[0019] Furthermore, the actual thickness of the coating layer on one side of the sample is h0, and the thickness measured under the metallographic microscope is h1. The actual thickness of the spacer adjacent to the coating layer of the sample is H0, and the thickness of the spacer adjacent to the coating layer of the sample measured under the metallographic microscope is H1. Then, h0 = H0 * h1 / H1.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] The fixture for measuring the coverage rate of composite panels provided by this utility model includes a base and spacers. The base is used to place and fix the test pieces. The test pieces are multiple samples cut from the composite panel to be tested. The multiple samples can be arranged side by side on the base along their own thickness direction and fixed on the base, with spacers inserted between any two adjacent samples for separation. The spacers are configured to have a predetermined thickness, be made of a different material than the samples, but have the same large surface shape and large surface size as the samples. When using the spacers to separate two adjacent samples, the large surface of the spacers is in contact with the large surface of the adjacent samples and the edges are aligned. Thus, after the test pieces are fixed on the base, the surface of the test pieces facing away from the base is flush, that is, the surfaces of all samples and all spacers facing away from the base are flush and arranged alternately in sequence. In the actual measurement process, after fixing the test piece on the base, the surface of the test piece facing away from the base is first polished to a mirror finish. Then, after etching with an etchant, it is placed under a metallographic microscope for observation and the thickness of the coating layer of the sample is measured.

[0022] During the measurement process, the edges of the polished surface of the sample will produce burrs. If two samples are placed directly together, the boundary line between the two adjacent samples will not be clear under a metallographic microscope because they are made of the same material. This application uses a spacer made of a different material from the sample to separate the two adjacent samples, which can ensure that the boundary line of the sample edge can still be clearly seen under a metallographic microscope, thereby ensuring the accuracy of the measurement when measuring the thickness of the coating layer of the sample.

[0023] Meanwhile, the thickness of each spacer is known. When measuring the thickness of the coating layer on one side of any sample, the thickness of the adjacent spacer can be measured first, and the measured thickness H1 can be compared with the actual thickness H0 of the spacer to determine whether the grinding surface of the sample has worn off-center. The true thickness of the coating layer can be obtained based on the measurement data of the thickness of the coating layer and the spacer. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 A schematic diagram of the base of the jig for measuring the coverage rate of composite panels provided in this embodiment of the utility model;

[0026] Figure 2 A schematic diagram of a jig for measuring the coverage rate of a composite plate equipped with a test piece, provided in an embodiment of this utility model;

[0027] Figure 3 This is a schematic diagram of the test piece with uneven wear provided in an embodiment of this utility model.

[0028] Figure label:

[0029] 1-Base, 2-Elastic element, 3-Clamping element, 4-Spacer, 5-Sample, 51-Covering layer;

[0030] a - First direction, b - Second direction. Detailed Implementation

[0031] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0032] The components of the present invention embodiments described and shown in the accompanying drawings can typically be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0033] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] The following reference Figures 1 to 3This application describes a fixture for measuring the coverage rate of composite panels according to some embodiments.

[0037] This application provides a fixture for measuring the coverage rate of composite plates, such as... Figure 1 and Figure 2 As shown, the fixture for measuring the coverage rate of composite board includes a base 1 and a spacer 4. The base 1 is used to place and fix the test piece. The test piece is a number of samples 5 cut from the composite board to be tested. The multiple samples 5 can be arranged side by side on the base 1 and fixed on the base 1 along their own thickness direction, and a spacer 4 is inserted between any two adjacent samples 5 for separation.

[0038] Both the sample 5 and the spacer 4 are thin plates with relatively low thickness. The sample 5 is placed on the base 1, meaning that the supporting surface of the base 1 for supporting the sample 5 is parallel to, rather than perpendicular to, the thickness direction of the sample 5. Furthermore, as thin plates, both the sample 5 and the spacer 4 include two large surfaces arranged opposite each other in their own thickness direction, and a peripheral surface surrounding the two large surfaces. In this embodiment, multiple samples 5 are cut to have the same large surface shape and size; for example, the sample 5 is a square thin plate with a large surface length of 20 mm and a width of 20 mm. Meanwhile, the spacer 4 is configured to have a predetermined thickness, be made of a different material than the sample 5, but have the same large surface shape and large surface size as the sample 5; when the spacer 4 is used to separate two adjacent samples 5, the large surface of the spacer 4 is made to be in contact with the large surface of the adjacent sample 5 and the edges are aligned, so that after the test piece (i.e., multiple samples 5 separated by the spacer 4) is fixed on the base 1, the surface of the test piece facing away from the base 1 is flush, that is, the surfaces of all samples 5 and all spacers 4 facing away from the base 1 are flush and arranged alternately in sequence.

[0039] In the actual measurement process, after fixing the part to be measured on the base 1, first place the surface of the part to be measured away from the base 1. Figure 3 The lower surface shown in the figure is polished to a mirror finish, then etched with an etchant and placed under a metallographic microscope for observation, and the thickness of the coating layer 51 of the sample 5 is measured.

[0040] During the measurement process, the edge of the polished surface of sample 5 will produce burrs. If two samples 5 are directly attached, the boundary line between the two adjacent samples 5 will not be clear under a metallographic microscope because they are made of the same material. However, this application uses a spacer 4 made of a different material than sample 5 to separate the two adjacent samples 5, which can ensure that the boundary line of the sample 5 edge can still be clearly seen under a metallographic microscope, thereby ensuring the accuracy of the measurement when measuring the thickness of the coating layer 51 of sample 5.

[0041] Meanwhile, the thickness of each spacer 4 is known. When measuring the thickness of the coating layer 51 on one side of any sample 5, the thickness of the adjacent spacer 4 can be measured first, and the measured thickness H1 can be compared with the actual thickness H0 of the spacer 4. If H1 and H0 are equal, it indicates that the grinding surface of the spacer 4 and the adjacent sample 5 is flat. At this time, the thickness h1 obtained by measuring the thickness of the coating layer 51 is equal to the actual thickness h0 of the coating layer 51. Figure 3 As shown, if H1 and H0 are not equal, it indicates that the grinding surfaces of spacer 4 and the adjacent sample 5 are ( Figure 3 The lower surface shown in the figure has a wear deviation. At this time, there is a deviation between the thickness h1 obtained by measuring the thickness of the coating layer 51 and the actual thickness h0 of the coating layer 51. It is necessary to convert the measured value to obtain the actual thickness value.

[0042] Specifically, when wear deviation occurs, the wear deviation angle θ is first calculated based on H1 and H0. For sample 5 and spacer 4 whose thickness direction is along the horizontal direction, the wear deviation angle is the angle between the wear surface and the horizontal plane. At this time, for spacer 4, cosθ=H0 / H1, and similarly for sample 5, cosθ=h0 / h1. Thus, the actual thickness h0=H0*h1 / H1 of the coating layer 51 can be calculated.

[0043] Therefore, the composite plate coating rate measuring fixture of this application can mount multiple samples 5 at once, achieving high-efficiency measurement and accelerating the testing speed. At the same time, when measuring the thickness of the coating layer 51 of multiple samples 5, the spacer 4 is used to separate two adjacent samples 5, which can make the sample 5 have a clear edge boundary line under the metallographic microscope, so as to ensure the accuracy of the measurement data. At the same time, it is possible to determine whether the grinding surface of the sample 5 has been worn off based on the measurement data of the thickness of the spacer 4, and obtain the true thickness of the coating layer 51 based on the measurement data of the thickness of the coating layer 51 and the spacer 4.

[0044] In one embodiment of this application, preferably, as shown below, Figure 1 and Figure 2 As shown, a limiting groove is formed on one side of the base 1 for placing the sample 5. The limiting groove has a length along a first direction a and a width along a second direction b, where the first direction a is perpendicular to the second direction b. The sample 5 can be inserted into the limiting groove perpendicularly to the bottom wall of the limiting groove, and the thickness direction of the sample 5 extends along the first direction a. Multiple samples 5 and multiple spacers 4 can be alternately inserted into the limiting groove along the first direction a. At the same time, the width of the limiting groove is slightly larger than the size of the sample 5 in the second direction b, so that the sample 5 can be inserted into the limiting groove and confined between the opposite side walls of the limiting groove in the second direction b, thereby limiting the sample 5 in the second direction b.

[0045] In this embodiment, preferably, as follows: Figure 1 and Figure 2 As shown, the limiting groove is provided with a clamping member 3 on at least one side in the first direction a. The clamping member 3 can be adjusted in position along the first direction a so as to clamp the test piece (i.e., multiple test pieces 5 separated by spacers 4) inserted in the limiting groove in the limiting groove, thereby limiting the test piece in the second direction b, and thus stably and firmly clamping and fixing the test piece on the base 1.

[0046] Specifically, when a clamping member 3 is provided on one side of the limiting groove in the first direction a, a clamping space is formed between the clamping member 3 and the side wall (referred to as the first side wall) on the other side of the limiting groove in the first direction a. The test piece is inserted between the clamping member 3 and the first side wall. By adjusting the position of the clamping member 3 in the first direction a, the test piece can be clamped between the clamping member 3 and the first side wall in the first direction a, thereby achieving the limiting of the test piece in the first direction a.

[0047] Alternatively, clamping members 3 are provided on both sides of the first direction a of the limiting groove. The clamping members 3 on both sides can be adjusted in position along the first direction a. The test piece can be inserted between the two clamping members 3. Then, the position of any clamping member 3 in the first direction a is adjusted so that the test piece is clamped between the two clamping members 3 in the first direction a, thereby limiting the test piece in the first direction a.

[0048] In one embodiment of this application, preferably, the side of the clamping member 3 away from the test piece abuts against the side wall of the limiting groove through the elastic member 2. When the test piece is inserted into the limiting groove, the clamping member 3 can elastically abut against the test piece through the elastic member 2, and the elastic member 2 can be compressed, so that the clamping member 3 has a tendency to move towards the test piece along the first direction a, thereby using the elastic force of the elastic member 2 to clamp the test piece in the limiting groove.

[0049] Preferably, there are multiple elastic elements 2, which are spaced apart along the first direction a, so as to provide sufficient elastic force to the clamping member 3 through the multiple elastic elements 2, so that the test piece can be stably and firmly clamped in the limiting groove.

[0050] In this embodiment, preferably, a guide hole is provided on the side wall opposite to the clamping member 3 of the limiting groove, and a guide rod is provided on the side of the clamping member 3 away from the test piece. The length direction of the guide rod is set along the first direction a. One end of the guide rod is connected to the clamping member 3, and the other end of the guide rod is movably inserted into the guide hole along the first direction a. Thus, the movement of the clamping member 3 along the first direction a is guided by the cooperation of the guide hole and the guide rod.

[0051] In one embodiment of this application, preferably, the clamping member 3 is provided with a driving member on the side opposite to the test piece. The driving member has a driving end that is retractable along the first direction a, and the driving end of the driving member is connected to the clamping member 3. The driving member can drive the clamping member 3 to move along the first direction a, so that the clamping member 3 abuts against the test piece with a predetermined pressure, thereby clamping the test piece in the limiting groove.

[0052] In this embodiment, preferably, the driving component is a cylinder or an electric push rod.

[0053] In one embodiment of this application, for the test piece clamped in the limiting groove of the base 1, the surface of the test piece facing away from the base 1 is the detection surface of the test piece, which needs to be subsequently ground and polished and observed under a metallographic microscope. The height of the test piece along the depth direction of the limiting groove is not less than the depth of the limiting groove, so that after the test piece is inserted into the limiting groove, the surface of the base 1 facing the detection surface outside the limiting groove is not higher than the detection surface, and at the same time, the clamping part 3 is not higher than the detection surface of the test piece, thereby ensuring the smooth progress of the subsequent grinding and polishing operation.

[0054] In one embodiment of this application, preferably, the sample 5 is a sample cut from an aluminum alloy brazing composite plate. The material of the spacer 4 is different from that of the sample 5. The material of the spacer 4 is resin, so that the sample 5 and the spacer 4 can be polished together, and the spacer 4 can be used to separate adjacent samples 5, so that the sample 5 has a clear boundary line under a metallographic microscope.

[0055] In this embodiment, preferably, the base 1 and the clamping member 3 are also made of resin.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A fixture for measuring the coverage rate of composite panels, characterized in that, Includes base and spacers; The base is used to place and fix the test piece, which is a plurality of test pieces cut from the composite plate to be tested. The plurality of test pieces can be arranged side by side on the base along their own thickness direction, and any two adjacent test pieces are separated by the spacer. The spacer is made of a different material than the sample, and the spacer is configured to have the same large surface shape and large surface size as the sample, so that when the spacer separates two adjacent samples, the large surface of the spacer is in contact with the large surface of the adjacent sample and the edges are aligned.

2. The fixture for measuring the coverage rate of composite panels according to claim 1, characterized in that, A limiting groove is formed on one side of the base. The limiting groove has a length along a first direction and a width along a second direction, wherein the first direction is perpendicular to the second direction. The sample can be inserted into the limiting groove perpendicularly to the bottom wall of the limiting groove, the thickness direction of the sample extends along the first direction, and the sample is limited between the two side walls in the second direction of the limiting groove.

3. The fixture for measuring the coverage rate of composite panels according to claim 2, characterized in that, The limiting groove is provided with a clamping member on at least one side in the first direction. The clamping member can be adjusted in position along the first direction to clamp the test piece inserted in the limiting groove within the limiting groove.

4. The fixture for measuring the coverage rate of composite panels according to claim 3, characterized in that, The side of the clamping member away from the test piece abuts against the side wall of the limiting groove through an elastic element. The elastic element can provide the clamping member with an elastic force along the first direction, so that the clamping member and the test piece elastically abut against each other.

5. The fixture for measuring the coverage rate of composite panels according to claim 4, characterized in that, The limiting groove has a guide hole on the side wall opposite to the clamping member. The clamping member has a guide rod on the side away from the test piece. The guide rod is arranged along the first direction. One end of the guide rod is connected to the clamping member, and the other end of the guide rod is movably inserted into the guide hole along the first direction.

6. The fixture for measuring the coverage rate of composite panels according to claim 3, characterized in that, The clamping member has a driving member on the side opposite to the test piece. The driving member has a driving end that is retractable along the first direction, and the driving end of the driving member is connected to the clamping member.

7. The fixture for measuring the coverage rate of composite panels according to claim 6, characterized in that, The driving component is a cylinder or an electric push rod.

8. The fixture for measuring the coverage rate of composite panels according to claim 3, characterized in that, The side of the test piece facing away from the base is the test surface of the test piece, and the surfaces of the base and the clamping member facing the test surface are not higher than the test surface.

9. The fixture for measuring the coverage rate of composite panels according to claim 3, characterized in that, The spacer is made of resin; The base is made of resin; The clamping component is made of resin.

10. The fixture for measuring the coverage rate of composite panels according to claim 1, characterized in that, The actual thickness of the coating layer on one side of the sample is h0, and the thickness measured under a metallographic microscope is h1. The actual thickness of the spacer adjacent to the coating layer of the sample is H0, and the thickness of the spacer adjacent to the coating layer of the sample is H1. Then h0 = H0 * h1 / H1.

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