Clamp for metallographic sample preparation and corrosion of thin steel plate
By designing a fixture for metallographic samples and corrosion of thin steel plates, the specimen pollution problems caused by gaps after inlay are solved, the sample cleaning and efficient sample preparation process are realized, and the quality of metallographic microscopy observation is improved.
Patent Information
- Application Number
- CN202420573370.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-03-21
AI Technical Summary
During the process of metallographic sample preparation of thin steel plates, small gaps are easily formed after inlaying, resulting in water and corrosive agent entering, contaminating the sample, and microscopic observation and image acquisition are not possible. At the same time, the conductivity of the inlay agent is poor, which is not conducive to scanning electron microscopy observation.
A thin steel plate metallographic sample and corrosion fixture is designed, including the first clamp, the second clamp, the gasket, the elastic clamping member, the fastening bolt and the fastening nut. The sample is clamped through the elastic clamping member to ensure that there is a certain distance between the sample and the clamp to prevent corrosion retention.
It effectively avoids sample contamination, ensures the cleanliness of the sample, simplifies the sample preparation process, improves work efficiency, and improves the conditions for metallographic microscopy observation and image acquisition.
Smart Images
Figure CN222644281U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of metallographic sample preparation, in particular to a fixture for metallographic sample preparation and corrosion of thin steel plates. Background Art
[0002] Steel plate is one of the four major types of steel. With the growth of my country's national economy, my country's steel plate output has gradually increased. Among them, thin steel plates with a thickness of 0.2-4mm are widely used in the automotive industry, aviation industry, electrical industry and other fields. The metallographic structure analysis of thin steel plates is of great significance for scientific researchers to analyze the basic characteristics of materials. Before metallographic analysis, the cross section of the steel plate needs to be prepared by metallographic sampling. For thin steel plates with a relatively thin thickness, the sample is easily tilted during the sample preparation process, so the material is generally inlaid before sample preparation.
[0003] When thin steel plates are inlaid, auxiliary blocks are needed to ensure that they are upright and not tilted during the inlay process. However, after inlaying, due to the different hardness of the inlay and the metal embedding, after several rough grinding and polishing, very small gaps are often formed between the sample and the inlay resin. Water in the sample preparation process and the corrosive agent after corrosion can easily enter these small gaps. When the sample is placed under an inverted microscope for observation, the liquid in the gap seeps out, causing contamination of the sample, making it impossible to conduct microscopic observation and capture microscopic images. On the other hand, the conductivity of the inlay is poor, which is not conducive to SEM observation. Utility Model Content
[0004] The utility model aims to provide a fixture for metallographic sample preparation and corrosion of thin steel plates to solve the problems existing in the above-mentioned prior art, with simple structure and reasonable design, effectively improving the sample preparation quality and effectively improving the work efficiency.
[0005] To achieve the above purpose, the utility model provides the following solutions:
[0006] The utility model provides a fixture for metallographic sample preparation and corrosion of thin steel plates, comprising: a first clamping plate, a second clamping plate, at least two gaskets, a plurality of elastic clamping members, a plurality of fastening bolts and a plurality of fastening nuts, wherein a plurality of first through holes are arranged on the first clamping plate; a plurality of second through holes are arranged on the second clamping plate; a sample is clamped and fixed between two adjacent gaskets, each gasket is placed between the two clamping plates and can be clamped under the action of the two clamping plates; each elastic clamping member is used to move the two clamping plates in opposite directions and clamp each gasket; a fastening bolt is used to pass through one of the first through holes and one of the second through holes and then be threadedly connected with one of the fastening nuts to clamp and fix the first clamping plate and the second clamping plate.
[0007] Preferably, the number of the elastic clamping members is two, and the two elastic clamping members are symmetrically arranged with respect to the center plane of the first clamping plate and the second clamping plate.
[0008] Preferably, the elastic clamping member includes a sliding rod, a first spring and a second spring, a plurality of third through holes are provided on the first clamping plate, a plurality of fourth through holes are provided on the second clamping plate, and a plurality of fifth through holes are provided on the gasket, one sliding rod is used to pass through one third through hole, one fifth through hole and one fourth through hole on each gasket, the first spring and the second spring are both sleeved on the sliding rod, one end of the first spring is used to tighten the first end of the sliding rod, and the other end is used to tighten the side of the first clamping plate away from the second clamping plate, one end of the second spring is used to tighten the second end of the sliding rod, and the other end is used to tighten the side of the second clamping plate away from the first clamping plate.
[0009] Preferably, the first end of the sliding rod includes a first nut and a first threaded segment, the first nut is used to be threadedly connected to the first threaded segment, and one end of the first spring is used to tighten the first nut, and the second end of the sliding rod includes a second nut and a second threaded segment, the second nut is used to be threadedly connected to the second threaded segment, and one end of the second spring is used to tighten the second nut.
[0010] Preferably, it also includes a first baffle and a second baffle, the first baffle is provided with a sixth through hole and a seventh through hole, the second baffle is provided with an eighth through hole and a ninth through hole, the first threaded ends of the two sliding rods respectively pass through the sixth through hole and the seventh through hole and are threadedly connected to the first nut, one end of the first spring is used to tighten the first baffle, the second threaded ends of the two sliding rods respectively pass through the eighth through hole and the ninth through hole and are threadedly connected to the second nut, and one end of the second spring is used to tighten the second baffle.
[0011] Preferably, the number of the fastening bolts is four, and the four fastening bolts are respectively used for four corners where the first clamping plate is provided.
[0012] Preferably, the width of the gasket is smaller than the width of the first clamping plate.
[0013] Compared with the prior art, the utility model has achieved the following technical effects:
[0014] The utility model provides a fixture for metallographic sample preparation and corrosion of thin steel plates. Each thin plate sample is placed between two adjacent gaskets respectively, and the sample is clamped by tightening a first clamping plate and a second clamping plate through an elastic clamping piece. The whole fixture is placed on a flat desktop, and the sample is adjusted so that the grinding cross section of the sample is close to the desktop. The fastening nut of the fastening bolt is screwed to clamp the sample, and the first clamping plate and the second clamping plate are held at a side of the sample not being ground to grind the sample. When corroding, an etchant is poured into a culture dish to a depth of about 2 mm, and the fixture and the sample can be directly placed in the etchant to corrode the sample. Since there is a certain interval between the sample and the fixture, each sample is relatively independent, and the etchant is easily blown dry, thereby ensuring the cleanliness of the sample. The utility model has a simple structure and a reasonable design, and effectively improves the sample preparation quality and the work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] 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.
[0016] Figure 1 A schematic diagram of the structure of the fixture for metallographic sample preparation and corrosion of thin steel plates provided by the utility model;
[0017] Figure 2 A front view of a fixture for metallographic sample preparation and corrosion of thin steel plates provided by the utility model;
[0018] In the figure: 1, first clamping plate; 2, second clamping plate; 3, gasket; 4, fastening bolt; 5, fastening nut; 6, sliding rod; 7, first spring; 8, second spring; 9, first nut; 11, second nut; 13, first baffle; 14, second baffle; 15, specimen. DETAILED DESCRIPTION
[0019] 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.
[0020] The utility model aims to provide a fixture for metallographic sample preparation and corrosion of thin steel plates to solve the problems existing in the above-mentioned prior art, with simple structure and reasonable design, effectively improving the sample preparation quality and effectively improving the work efficiency.
[0021] In order to make the above-mentioned objects, 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.
[0022] The utility model provides a fixture for metallographic sample preparation and corrosion of thin steel plates, such as Figures 1-2 As shown, it includes: a first clamping plate 1, a second clamping plate 2, at least two gaskets 3, a plurality of elastic clamping members, a plurality of fastening bolts 4 and a plurality of fastening nuts 5, the first clamping plate 1 is provided with a plurality of first through holes; the second clamping plate 2 is provided with a plurality of second through holes; a sample 15 is clamped and fixed between two adjacent gaskets 3, each gasket 3 is placed between the two clamping plates and can be clamped under the action of the two clamping plates; each elastic clamping member is used to move the two clamping plates in opposite directions and clamp each gasket 3; a fastening bolt 4 is used to pass through a first through hole and a second through hole and then be threadedly connected with a fastening nut 5 to clamp and fix the first clamping plate 1 and the second clamping plate 2, and each thin plate sample 15 is placed between each two adjacent gaskets 3, through The elastic clamping piece presses the first clamping plate 1 and the second clamping plate 2 to clamp the sample 15, and the whole fixture is placed on a flat table. The sample 15 is adjusted so that the ground section of the sample 15 is close to the table. The fastening nut 5 of the fastening bolt 4 is tightened to clamp the sample 15. The first clamping plate 1 and the second clamping plate 2 are held on the side of the non-ground sample 15 to grind the sample 15. When corroding, the corrosive agent is poured into the culture dish to a depth of about 2 mm, and the fixture together with the sample 15 can be directly placed in the corrosive agent to corrode the sample 15. Since there is a certain interval between the sample 15 and the fixture, each sample 15 is relatively independent, and the corrosive agent is easily blown dry, which ensures the cleanliness of the sample 15. The structure is simple, the design is reasonable, and the sample preparation quality is effectively improved, and the work efficiency is effectively improved.
[0023] In a preferred embodiment, the number of the elastic clamping members is two, and the two elastic clamping members are symmetrically arranged with respect to the center plane of the first clamping plate 1 and the second clamping plate 2 to ensure the stability of the clamping of the first clamping plate 1 and the second clamping plate 2 .
[0024] In a preferred embodiment, the elastic clamping member includes a slide rod 6, a first spring 7 and a second spring 8. A plurality of third through holes are provided on the first clamp plate 1, a plurality of fourth through holes are provided on the second clamp plate 2, and a plurality of fifth through holes are provided on the gasket 3. A slide rod 6 is used to pass through a third through hole, a fifth through hole and a fourth through hole on each gasket 3. The first spring 7 and the second spring 8 are both sleeved on the slide rod 6. One end of the first spring 7 is used to tighten the first end of the slide rod 6, and the other end is used to tighten the side of the first clamp plate 1 away from the second clamp plate 2. One end of the second spring 8 is used to tighten the second end of the slide rod 6, and the other end is used to tighten the side of the second clamp plate 2 away from the first clamp plate 1. The structure is simple and the operation is convenient. The first clamp plate 1 and the second clamp plate 2 can be elastically clamped by the first spring 7 and the second spring 8.
[0025] In a preferred embodiment, the first end of the slide rod 6 includes a first nut 9 and a first threaded segment, the first nut 9 is used to be threadedly connected to the first threaded segment, one end of the first spring 7 is used to tighten the first nut 9, the second end of the slide rod 6 includes a second nut 11 and a second threaded segment, the second nut 11 is used to be threadedly connected to the second threaded segment, one end of the second spring 8 is used to tighten the second nut 11, the structure is simple, and the operation is convenient, and the clamping force of the first spring 7 and the second spring 8 can be adjusted by rotating the first nut 9 and the second nut 11.
[0026] In a preferred embodiment, it also includes a first baffle 13 and a second baffle 14, the first baffle 13 is provided with a sixth through hole and a seventh through hole, the second baffle 14 is provided with an eighth through hole and a ninth through hole, the first threaded ends of the two slide rods 6 respectively pass through the sixth through hole and the seventh through hole and are threadedly connected to the first nut 9, one end of the first spring 7 is used to tighten the first baffle 13, the second threaded ends of the two slide rods 6 respectively pass through the eighth through hole and the ninth through hole and are threadedly connected to the second nut 11, one end of the second spring 8 is used to tighten the second baffle 14, the first baffle 13 and the second baffle 14 are rectangular stainless steel plates of 5mm×33mm×1mm, and the first baffle 13 and the second baffle 14 can ensure the stability of the slide rod 6.
[0027] In a preferred embodiment, the number of the fastening bolts 4 is four, and the four fastening bolts 4 are respectively used for the four corners where the first clamping plate 1 is provided, with a simple structure and stable fixation.
[0028] In a preferred embodiment, the width of the gasket 3 is smaller than the width of the first clamp 1, the first clamp 1 and the second clamp 2 are both rectangular wear-resistant steel plates of 28mm×33mm×4mm, and the gasket 3 is a rectangular stainless steel plate of 8mm×33mm×2.5mm. The clamp can add or subtract the number of gaskets 3, and can clamp multiple thin steel plate specimens 15 of different thicknesses at the same time, thereby improving work efficiency. The gasket 3 of the clamp separates the specimens 15 by a certain distance to prevent the specimens 15 from directly contacting the first clamp 1 or the second clamp 2. Since there is a certain interval between the specimens 15 and the first clamp 1 or the second clamp 2, each sample is relatively independent, and the corrosive agent can be easily blown dry, thereby ensuring the cleanliness of the sample, effectively avoiding the residue of liquid during the sample preparation and corrosion process, and ensuring that the surface of the sample 15 is clean and free of water stains, which is conducive to metallographic microscopic observation and the collection of microscopic images.
[0029] 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 fixture for metallographic sample preparation and corrosion of thin steel plates, characterized by: include: A first clamping plate, wherein a plurality of first through holes are provided on the first clamping plate; A second clamping plate, wherein the second clamping plate is provided with a plurality of second through holes; At least two gaskets, two adjacent gaskets are used to clamp and fix a sample, each gasket is placed between the two clamping plates and can be clamped under the action of the two clamping plates; A plurality of elastic clamping members, each of which is used to move the two clamping plates toward each other and clamp each of the gaskets; A plurality of fastening bolts, and A plurality of fastening nuts, wherein one of the fastening bolts is used to pass through one of the first through holes and one of the second through holes and then be threadedly connected with one of the fastening nuts to clamp and fix the first clamping plate and the second clamping plate.
2. The fixture for metallographic sampling and corrosion of thin steel plates according to claim 1, characterized in that: The number of the elastic clamping members is two, and the two elastic clamping members are symmetrically arranged with respect to the center plane of the first clamping plate and the second clamping plate.
3. The fixture for metallographic sampling and corrosion of thin steel plates according to claim 2, characterized in that: The elastic clamping member includes a sliding rod, a first spring and a second spring, a plurality of third through holes are provided on the first clamping plate, a plurality of fourth through holes are provided on the second clamping plate, and a plurality of fifth through holes are provided on the gasket, one sliding rod is used to pass through one of the third through holes, one of the fifth through holes and one of the fourth through holes on each of the gaskets, the first spring and the second spring are both sleeved on the sliding rod, one end of the first spring is used to tighten the first end of the sliding rod, and the other end is used to tighten the side of the first clamping plate away from the second clamping plate, one end of the second spring is used to tighten the second end of the sliding rod, and the other end is used to tighten the side of the second clamping plate away from the first clamping plate.
4. The fixture for metallographic sampling and corrosion of thin steel plates according to claim 3, characterized in that: The first end of the sliding rod includes a first nut and a first threaded segment, the first nut is used to be threadedly connected to the first threaded segment, one end of the first spring is used to tighten the first nut, the second end of the sliding rod includes a second nut and a second threaded segment, the second nut is used to be threadedly connected to the second threaded segment, and one end of the second spring is used to tighten the second nut.
5. The fixture for metallographic sampling and corrosion of thin steel plates according to claim 4, characterized in that: It also includes a first baffle and a second baffle, the first baffle is provided with a sixth through hole and a seventh through hole, the second baffle is provided with an eighth through hole and a ninth through hole, the first threaded ends of the two sliding rods respectively pass through the sixth through hole and the seventh through hole and are threadedly connected to the first nut, one end of the first spring is used to tighten the first baffle, the second threaded ends of the two sliding rods respectively pass through the eighth through hole and the ninth through hole and are threadedly connected to the second nut, and one end of the second spring is used to tighten the second baffle.
6. The fixture for metallographic sampling and corrosion of thin steel plates according to claim 1, characterized in that: The number of the fastening bolts is four, and the four fastening bolts are respectively used for the four corners where the first clamping plate is provided.
7. The fixture for metallographic sampling and corrosion of thin steel plates according to claim 1, characterized in that: The width of the gasket is smaller than the width of the first clamping plate.