CN211348015U

CN211348015U - A anchor clamps that is used for round bar metallography system appearance

Info

Publication number: CN211348015U
Application number: CN201921827885.7U
Authority: CN
Inventors: 吕一格; 赵志灵; 魏冬冬; 张健康; 代彦明
Original assignee: Northwest Rare Metal Materials Research Institute Ningxia Co ltd
Current assignee: Northwest Rare Metal Materials Research Institute Ningxia Co ltd
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-08-25
Anticipated expiration: 2029-10-29

Abstract

The utility model discloses a clamp for preparing a metallographic sample of a round bar, which comprises a clamping body and a detachable part; the clamping body is a cylinder; one end face of the cylinder is a circular plane; a semicircular groove of a round bar sample to be ground is formed in the round plane; and the other end surface of the cylinder is provided with a convex connecting part which can be matched with the detachable part for installation. The utility model discloses simple structure, low in manufacturing cost, the operation is simple and easy, has avoided the mosaicked material to volatilize and has leaded to the electron microscope diaphragm to block up, has improved efficiency of software testing, has effectively reduced electron microscope maintenance cost.

Description

A anchor clamps that is used for round bar metallography system appearance

Technical Field

The utility model belongs to the technical field of the metallographic test, a anchor clamps that are used for round bar metallography system appearance is related to.

Background

In the microstructure detection project, the microstructure near the fracture of the fractured tensile sample needs to be observed to see whether twin crystals and microcracks are generated, so that a round rod part near the fracture needs to be cut off and metallographic sampling needs to be performed along the longitudinal direction.

When the longitudinal surface of the round bar is prepared, the round bar cannot be directly held by hands to prepare a sample, and the metallographic sample is prepared by using a method of inlaying embedded powder on the sample. And the embedded sample can generate higher temperature when the beam current of the field emission electron microscope acts on the surface of the sample in the later scanning electron microscope detection process, so that the phenomenon of blockage of an electron microscope diaphragm caused by volatilization of the embedded substances can occur, and the maintenance cost of the electron microscope is greatly improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anchor clamps for round bar metallography system appearance, the technical problem that the electron microscope diaphragm that exists has blockked up among the prior art has been overcome to this anchor clamps.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a clamp for preparing a metallographic sample of a round bar material comprises a clamping body and a detachable component;

the clamping body is a cylinder; one end face of the cylinder is a circular plane; a semicircular groove of a round bar sample to be ground is formed in the round plane; and the other end surface of the cylinder is provided with a convex connecting part which can be matched with the detachable part for installation.

Further, the convex connecting part is a convex connecting rod; one end of the convex connecting rod is fixed in the screw groove; the screw groove is arranged on the other end face of the cylinder;

the detachable component comprises a cylindrical base; a screw matched with the screw groove is arranged on the cylindrical base; and a hole into which the raised connecting rod is inserted is formed in the screw.

Furthermore, the number of the semicircular grooves is multiple.

Further, the radius of the plurality of semicircular grooves is the same.

Further, the radius of the plurality of semicircular grooves is different.

Furthermore, a plurality of strip key grooves are formed in the bottom of the semicircular groove; the length direction of the long key groove is consistent with the radial direction of the circular plane.

Further, the widths of the plurality of elongated key slots are the same.

The utility model has the advantages that:

the fixture of the utility model does not need to reuse the embedding powder for embedding, and the sample is directly pasted into the circular groove of the fixture, so that the blockage of the diaphragm of the electron microscope caused by the volatilization of the embedding material is avoided, the time is saved, the testing efficiency is improved, the material consumption is reduced, and the maintenance cost of the electron microscope is effectively reduced; the utility model discloses an anchor clamps simple structure, low in manufacturing cost, the operation is simple and easy, can process the shape in hole on the porous base of aluminum alloy according to the demand, and the sample that is fit for the various shapes of centre gripping carries out the metallography preparation.

Drawings

FIG. 1 is a schematic structural view of a clamp for preparing a metallographic sample of a round bar material according to the present invention;

FIG. 2 is a front view of the clamping body of the present invention;

fig. 3 is a top view of the clamping body of the present invention;

FIG. 4 is a front view of the detachable part of the present invention;

fig. 5 is a top view of the detachable component of the present invention.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

The embodiment provides a clamp for preparing a metallographic sample of a round bar, and the structure of the clamp is shown in figures 1, 2, 3, 4 and 5, and the clamp comprises a clamping body 1 and a detachable part 2. In order to be easier to hold by hand, when automatic grinding, change the centre gripping, and be difficult for droing, the centre gripping body 1 of this embodiment is the cylinder, and its material is preferred metal, like the aluminum alloy, can guarantee anchor clamps and sample firm in connection and electrically conductive, need not to spout conductive processing such as carbon, metal spraying again, reduces the consumptive material, raises the efficiency. In order to prevent the sandpaper or polishing cloth from being scratched easily, the surface of the cylinder is smooth and has no sharp edges in this embodiment.

In this embodiment, one end surface of the cylinder is a circular plane; the round plane is provided with a semi-circular groove 1-1, the semi-circular groove 1-1 is used for placing a round bar sample to be ground, the round bar sample to be ground is longitudinally pasted, and the longitudinal surface of the round bar sample to be ground is ground, observed and analyzed. In order to attach and prepare a plurality of samples at a time, the semicircular groove 1-1 of the present embodiment is provided in plurality, and the radius of the semicircular groove 1-1 is set according to different requirements. In order to ensure the metallographic sample preparation of the batch of round bars, the radiuses of the plurality of semi-circular grooves in the embodiment are the same; in addition, in order to ensure metallographic sample preparation of different batches of round bars, the radii of the plurality of semi-circular grooves 1-1 are different.

The bottom of the semicircular groove 1-1 is provided with a plurality of strip key grooves 1-3 which have the same width and length as the length of the semicircular groove 1-1, and the direction of the strip key grooves is consistent with the radial direction of the circular plane, so that the contact area between the surface of a sample and the semicircular groove 1-1 can be reduced, the sample can be more easily taken down after the sample is prepared and analyzed, and the clamp can be used repeatedly.

In the embodiment, the other end surface of the cylinder is provided with a screw groove 1-2, and the center of the screw groove 1-2 is provided with a convex connecting part 3 which can be matched with the detachable part 2; the convex connecting part 3 of the embodiment is a convex connecting rod which can be matched and fixed with other testing tools.

The detachable part of the present embodiment comprises a cylindrical base 2; a screw 2-1 matched with the screw groove 1-2 is arranged on the cylindrical base 2; a hole 2-2 into which the connecting rod 3 is inserted is arranged in the screw port 2-1.

The using process of the embodiment is as follows: the test samples are stuck in the semicircular groove of the clamping body, one side of the test sample is close to the edge of the semicircular groove, and if a plurality of sample test samples exist, other sample test samples needing to be prepared can be continuously stuck in the second semicircular groove; and then insert the protruding connecting rod of the bottom of centre gripping body in the hole of the part of can dismantling to use the screw to fasten the two, make its stable hole of being fixed in the part of can dismantling, constitute whole anchor clamps. And (4) carrying out metallographic grinding and polishing preparation by holding or installing the device in an automatic grinding and polishing machine. And after finishing polishing, carrying out metallographic detection. If need carry out electron microscope analysis, twist out the centre gripping body from the well of dismantling the part, insert protruding connecting rod in rather than other sample seats that match, fixed can put into scanning electron microscope sample storehouse, carry out relevant test.

The clamp of the embodiment does not need to use embedding powder for embedding, and the test sample is directly pasted into the circular groove of the clamp, so that the blockage of the diaphragm of the electron microscope caused by the volatilization of embedding substances is avoided, the time is saved, the testing efficiency is improved, the material consumption is reduced, and the maintenance cost of the electron microscope is effectively reduced; the clamp of the embodiment is simple in structure, low in manufacturing cost and easy to operate, can process the shape of the hole in the aluminum alloy porous base according to the requirement, and is suitable for clamping samples in various shapes to perform metallographic preparation.

It is apparent to those skilled in the art that the embodiments of the present invention are not limited to the details of the above-described exemplary embodiments, and can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the embodiments being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. Several units, modules or means recited in the system, apparatus or terminal claims may also be implemented by one and the same unit, module or means in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the embodiments of the present invention and are not limited, and although the embodiments of the present invention have been described in detail with reference to the above preferred embodiments, it should be understood by those skilled in the art that modifications and equivalent substitutions can be made on the technical solutions of the embodiments of the present invention without departing from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. The clamp for preparing the metallographic sample of the round bar is characterized by comprising a clamping body and a detachable part;

2. The clamp of claim 1, wherein the male coupling member is a male coupling rod; one end of the convex connecting rod is fixed in the screw groove; the screw groove is arranged on the other end face of the cylinder;

3. The clamp of claim 1 or 2, wherein the semi-circular groove is plural.

4. The clamp of claim 3, wherein the radius of the plurality of semi-circular grooves is the same.

5. The clamp of claim 3, wherein the radius of the plurality of semi-circular grooves are different.

6. The clamp of claim 1 or 2, wherein the bottom of the semicircular groove is provided with a plurality of elongated key grooves; the length direction of the long key groove is consistent with the radial direction of the circular plane.

7. The clamp of claim 6, wherein the plurality of elongated keyways are the same width.