Metallographic sample preparation clamp for sheet sample surface

Abstract

The utility model discloses a metallographic sample preparation clamp for a sheet sample surface, and relates to the technical field of metal material detection, the metallographic sample preparation clamp comprises a fixed block, a movable block and a locking piece, the top of the fixed block is provided with a clamping station, and the clamping station is used for placing a sheet sample; the movable block is used for jacking one side, far away from the fixed block, of the thin plate sample placed on the clamping station; the locking piece is used for driving the movable block to be close to or away from the fixed block and can keep the moved position, the thin plate sample can be effectively clamped, clamping is convenient, and the success rate of sample preparation is effectively increased.

Description

Technical Field

[0001] The utility model relates to the technical field of metal material detection, in particular to a metallographic sample preparation fixture used for the surface of a thin plate sample. Background Art

[0002] The surface quality of thin plate products is an important indicator for measuring thin plate products. The texture distribution of the subsurface of the thin plate and the composition of the matrix phase are important factors in characterizing the performance of the product. Therefore, it is particularly important to strengthen the quality inspection and analysis of the surface and subsurface of thin plate products. Steel plates can be divided into two specifications: thin plates and thick plates according to thickness. The thickness of thin steel plates is 0.2-4mm, and the thickness of thick steel plates is 4-115mm. For thin plate samples with a thickness of <4mm, the use of traditional handheld sample preparation to grind the surface metallographic samples has safety hazards. There is a risk that the sample cannot be held firmly and will fly out; second, the grinding force is not easy to control, and it is easy to grind away the surface defects. Some technicians use glue, resin and other materials to inlay thin plate samples. The prepared metallographic samples are then soaked in organic solvents such as acetone for a long time to remove glue, resin, etc. Sometimes, incomplete removal will cause the surface of the thin plate sample to be uneven, and acetone is a chemical that is easy to make poison and carcinogenic, which is harmful to the operator's body.

[0003] Patents CN 2373788Y, CN 103158085A, CN 202305301 U and CN 204731075U all use the strong magnetic effect of magnet blocks to adsorb thin plate samples on fixtures to achieve metallographic sample preparation of the thin plate surface, with high grinding efficiency and high success rate. However, for non-magnetic thin plate samples, such as 304 stainless steel, it is not easy to use such fixtures, so they have certain limitations. Utility Model Content

[0004] The utility model aims to provide a metallographic sample preparation fixture for the surface of a thin plate sample, so as to solve the problems existing in the above-mentioned prior art, and can effectively clamp the thin plate sample, is convenient to clamp, and effectively improves the success rate of sample preparation.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] The utility model provides a metallographic sample preparation fixture for the surface of a thin plate sample, comprising: a fixed block, a movable block and a locking piece, wherein a clamping station is arranged on the top of the fixed block, and the clamping station is used for placing the thin plate sample; the movable block is used for pressing the side of the thin plate sample placed on the clamping station away from the fixed block; the locking piece is used for driving the movable block to approach or move away from the fixed block and to maintain the position after the movement.

[0007] Preferably, a first baffle plate and a first groove surface are provided on one side of the top surface of the fixing block, the height of the first baffle plate is higher than the height of the first groove surface, and the first baffle plate and the first groove surface form the clamping station.

[0008] Preferably, a second baffle and a second groove surface are provided on one side of the movable block, the second baffle is provided at the top of one side of the movable block, the second baffle protrudes from the second groove surface, and the second baffle and the first baffle are used to tighten the thin plate sample placed on the clamping station.

[0009] Preferably, the length of the movable block is the same as that of the fixed block, and the height of the movable block is the same as that of the fixed block.

[0010] Preferably, the height of the first baffle is the same as the height of the second baffle.

[0011] Preferably, the locking member includes a bolt and a nut, a first through hole is provided in the middle of the fixed block, and a second through hole is provided in the middle of the movable block, and the bolt is used to pass through the first through hole and the second through hole and then be threadedly fixedly connected with the nut to clamp and fix the thin plate sample with the first baffle and the second baffle.

[0012] Preferably, the axis center line of the first through hole is collinear with the center line of the fixed block, and the axis center line of the second through hole is collinear with the center line of the movable block.

[0013] Preferably, a groove is provided at one end of the first groove surface close to the first baffle.

[0014] Compared with the prior art, the utility model has achieved the following technical effects:

[0015] The utility model provides a metallographic sample preparation fixture for the surface of a thin plate sample. The thin plate sample is placed flat on the clamping station of a fixed block. After the movable block squeezes the thin plate sample, the locking piece locks the movable block and the fixed block, so that the thin plate sample can be firmly fixed, so that the surface of the thin plate sample can be subjected to mechanical operations such as metallographic grinding and polishing. After the sample preparation is completed, the locking piece is mobilized to move the movable block away from the fixed block to remove the sample, and then the thin plate sample can be placed in the instrument for residual austenite determination. The utility model can effectively clamp the thin plate sample, is convenient to clamp, and effectively improves the success rate of sample preparation. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 1 A schematic diagram of the structure of a metallographic sample preparation fixture for a thin plate sample surface provided by the utility model;

[0018] Figure 2 A front view of a metallographic sample preparation fixture for a thin plate sample surface provided by the utility model;

[0019] Figure 3 for Figure 2 A top view of

[0020] In the figure: 1, fixed block; 2, movable block; 4, first baffle; 5, first groove surface; 6, second baffle; 7, second groove surface; 8, bolt; 9, nut; 10, groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model aims to provide a metallographic sample preparation fixture for the surface of a thin plate sample, so as to solve the problems existing in the above-mentioned prior art, and can effectively clamp the thin plate sample, is convenient to clamp, and effectively improves the success rate of sample preparation.

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] The utility model provides a metallographic sample preparation fixture for the surface of a thin plate sample, such as Figures 1 to 3As shown, it includes: a fixed block 1, a movable block 2 and a locking piece. A clamping station is set on the top of the fixed block 1, and the clamping station is used to place the thin plate sample; the movable block 2 is used to tighten the thin plate sample placed on the clamping station away from the fixed block 1; the locking piece is used to drive the movable block 2 to approach or move away from the fixed block 1 and can maintain the position after moving. The thin plate sample is placed flat on the clamping station of the fixed block 1. After the movable block 2 squeezes the thin plate sample, the locking piece locks the movable block 2 and the fixed block 1, so that the thin plate sample can be firmly fixed, so that the surface of the thin plate sample can be subjected to mechanical operations such as metallographic grinding and polishing. After the sample preparation is completed, the locking piece is mobilized to move the movable block 2 away from the fixed block 1 to remove the sample, and then the thin plate sample can be placed in the instrument for residual austenite determination. The utility model can effectively clamp the thin plate sample, is convenient to clamp, and effectively improves the success rate of sample preparation.

[0025] In a preferred embodiment, a first baffle plate 4 and a first groove surface 5 are provided on one side of the top surface of the fixing block 1. The height of the first baffle plate 4 is higher than that of the first groove surface 5. The first baffle plate 4 and the first groove surface 5 form a clamping station.

[0026] In a preferred embodiment, a second baffle 6 and a second groove surface 7 are provided on one side of the movable block 2. The second baffle 6 is provided at the top of one side of the movable block 2. The second baffle 6 protrudes from the second groove surface 7. The second baffle 6 and the first baffle 4 are used to tighten the thin plate sample placed on the clamping station. The structure is simple and the operation is convenient. The movement of the movable plate drives the second baffle 6 to approach the first baffle 4 so that the thin plate sample can be tightened and locked under the action of the locking member.

[0027] In a preferred embodiment, the length of the movable block 2 is the same as the length of the fixed block 1, and the height of the movable block 2 is the same as the height of the fixed block 1. The fixed block 1 has a length of 40 mm, a thickness of 30 mm, and a height of 30 mm. The height of the movable block 2 is 30 mm, a length of 40 mm, and a thickness of 5 mm.

[0028] In a preferred embodiment, the height of the first baffle 4 is the same as the height of the second baffle 6 .

[0029] In a preferred embodiment, the locking member includes a bolt 8 and a nut 9, a first through hole is provided in the middle of the fixed block 1, and a second through hole is provided in the middle of the movable block. The bolt 8 is used to pass through the first through hole and the second through hole and then be threadedly fixedly connected with the nut 9 to clamp and fix the thin plate sample with the first baffle 4 and the second baffle 6. The structure is simple, the material is convenient to obtain, and the operation is convenient.

[0030] In a preferred embodiment, the axis of the first through hole is colinear with the center line of the fixed block 1 , and the axis of the second through hole is colinear with the center line of the movable block 2 , so that the second baffle 6 and the first baffle 4 can maintain correspondence.

[0031] In a preferred embodiment, a groove 10 is provided at one end of the first groove surface 5 close to the first baffle 4, which can increase the stability of sample clamping.

[0032] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A metallographic sample preparation fixture for the surface of a thin plate sample, characterized in that: include: A fixing block, the top of which is provided with a clamping station for placing a thin plate sample; a movable block, the movable block being used to press against a side of the thin plate specimen placed on the clamping station away from the fixed block; and A locking piece is used to drive the movable block to approach or move away from the fixed block and to maintain the position after the movement.

2. The metallographic sample preparation fixture for the surface of a thin plate sample according to claim 1, characterized in that: A first baffle plate and a first groove surface are disposed on one side of the top surface of the fixing block. The height of the first baffle plate is higher than the height of the first groove surface. The first baffle plate and the first groove surface form the clamping station.

3. The metallographic sample preparation fixture for the surface of a thin plate sample according to claim 2, characterized in that: A second baffle and a second groove surface are provided on one side of the movable block, the second baffle is provided at the top of one side of the movable block, the second baffle protrudes from the second groove surface, and the second baffle and the first baffle are used to tighten the thin plate sample placed on the clamping station.

4. The metallographic sample preparation fixture for the surface of a thin plate sample according to claim 3, characterized in that: The length of the movable block is the same as that of the fixed block, and the height of the movable block is the same as that of the fixed block.

5. The metallographic sample preparation fixture for the surface of a thin plate sample according to claim 4, characterized in that: The height of the first baffle is the same as the height of the second baffle.

6. The metallographic sample preparation fixture for the surface of a thin plate sample according to claim 5, characterized in that: The locking member includes a bolt and a nut, a first through hole is provided in the middle of the fixed block, and a second through hole is provided in the middle of the movable block. The bolt is used to pass through the first through hole and the second through hole and then be threadedly fixedly connected with the nut to clamp and fix the thin plate sample with the first baffle and the second baffle.

7. The metallographic sample preparation fixture for the surface of a thin plate sample according to claim 6, characterized in that: The axis center line of the first through hole is collinear with the center line of the fixed block, and the axis center line of the second through hole is collinear with the center line of the movable block.

8. The metallographic sample preparation fixture for the surface of a thin plate sample according to claim 7, characterized in that: A groove is provided at one end of the first groove surface close to the first baffle.

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