Clamping tool for grinding metallographic specimen

Abstract

The utility model discloses a clamping tool for grinding a metallographic specimen, belongs to the field of metallographic detection, and aims to solve the problem of low grinding efficiency of rough grinding of the metallographic specimen. Comprising a sample clamp body, the sample clamp body comprises a front clamping plate part, a common clamping plate part and a rear clamping plate part which are arranged at intervals from front to back, the left end of the front clamping plate part and the left end of the common clamping plate part are connected through a first connecting plate part, and the right end of the common clamping plate part and the right end of the rear clamping plate part are connected through a second connecting plate part to form a component shaped like a Chinese character'ji '. The front clamping plate part and the shared clamping plate part are gradually converged from left to right, the shared clamping plate part and the rear clamping plate part are gradually converged from right to left, one metallographic specimen is clamped between the front clamping plate part and the shared clamping plate part, the other metallographic specimen is clamped between the shared clamping plate part and the rear clamping plate part, and the lower ends of the two metallographic specimens both protrude out of the specimen clamp body. The clamp is used for the rough grinding step in metallographic grinding, two metallographic samples can be clamped at the same time for grinding, and the efficiency can be doubled.

Description

Technical Field

[0001] The utility model belongs to the field of metallographic inspection, and particularly relates to a clamping tool for grinding a metallographic specimen flat. Background Art

[0002] Metallography refers to the physical state and chemical state of the chemical composition of a metal inside it. The metallographic structure can reflect the specific morphology of the metal metallography, which can be obtained by observing a metallographic specimen through a microscope. Common metallographic structures of steel include: ferrite, austenite, cementite, pearlite, etc. Generally, a steel specimen is cut into a cuboid block to obtain a metallographic specimen. Before observing the metallographic structure, it is necessary to first perform rough grinding, fine grinding, rough polishing, fine polishing, and finish polishing on the observation surface of the metallographic specimen in sequence.

[0003] The steel metallographic specimen has been quenched first. In the rough grinding step, it is necessary to grind and remove the oxide layer by 1 - 2 mm from the specimen before metallographic observation. The hardness of the quenched specimen is high, the workload of metallographic grinding is large, and the grinding efficiency is low. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a clamping tool for grinding a metallographic specimen flat to solve the problem of low grinding efficiency in rough grinding of the metallographic specimen. The technical solution adopted by the utility model is as follows:

[0005] A clamping tool for grinding a metallographic specimen flat includes a specimen clamp body. The specimen clamp body includes a front clamping plate part, a common clamping plate part, and a rear clamping plate part arranged at intervals from front to back. The left end of the front clamping plate part and the left end of the common clamping plate part are connected by a first connecting plate part, and the right end of the common clamping plate part and the right end of the rear clamping plate part are connected by a second connecting plate part, forming a double - opening member in the shape of "ji". The front clamping plate part and the common clamping plate part gradually converge from left to right, and the common clamping plate part and the rear clamping plate part gradually converge from right to left. One metallographic specimen is clamped between the front clamping plate part and the common clamping plate part, and another metallographic specimen is clamped between the common clamping plate part and the rear clamping plate part. The lower ends of both metallographic specimens protrude from the specimen clamp body.

[0006] Furthermore, the sample clamp body includes six specifications, and the distance between the right end of the front clamping plate part and the right end of the common clamping plate part, and the distance between the left end of the common clamping plate part and the left end of the rear clamping plate part are all defined as the opening end distance, and the distance between the left end of the front clamping plate part and the left end of the common clamping plate part, and the distance between the right end of the common clamping plate part and the right end of the rear clamping plate part are all defined as the connection end distance. The first specification of the sample clamp body has an opening end distance of 9 mm and a connection end distance of 11 mm, the second specification of the sample clamp body has an opening end distance of 10 mm and a connection end distance of 12 mm, the third specification of the sample clamp body has an opening end distance of 11 mm and a connection end distance of 13 mm, the fourth specification of the sample clamp body has an opening end distance of 12 mm and a connection end distance of 14 mm, the fifth specification of the sample clamp body has an opening end distance of 13 mm and a connection end distance of 15 mm, the sixth specification of the sample clamp body has an opening end distance of 14 mm and a connection end distance of 16 mm, and the height of the six specifications of the test clamp body is 10 mm.

[0007] Furthermore, arc bends are provided between the first connecting plate portion and the front clamping plate portion and the common clamping plate portion, and arc bends are provided between the second connecting plate portion and the common clamping plate portion and the rear clamping plate portion.

[0008] Furthermore, the specimen holder body is a 45-gauge steel component.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] At present, the manual grinding method of metallographic samples is: each time holding a sample and grinding it on the grinding wheel first, because the metallographic samples of steel are first quenched, the sample needs to be ground to remove the oxide layer of 1-2mm before metallographic observation. The hardness of the sample after quenching is high, the workload of metallographic grinding is large, and the rough grinding step takes the longest time and is the most labor-intensive in the entire grinding process. The utility model is used for the "rough grinding" step in metallographic grinding, and can clamp two metallographic samples for grinding at the same time, which can double the efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a top view of the utility model;

[0012] Figure 2 It is a front view of a metallographic sample clamped on the utility model;

[0013] Figure 3 It is a top view of a metallographic sample clamped on the utility model.

[0014] In the figure, 1. front clamping plate part, 2. common clamping plate part, 3. rear clamping plate part, 4. first connecting plate part, 5. second connecting plate part, 6. metallographic sample, 10. sample clamp body. DETAILED DESCRIPTION

[0015] To make the objectives, technical solutions, and advantages of the present utility model clearer and more understandable, the present utility model will be described below through specific embodiments shown in the attached drawings. However, it should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the present utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concepts of the present utility model.

[0016] The connections mentioned in the present utility model are divided into fixed connections and detachable connections. The fixed connection is an inseparable connection, including but not limited to conventional fixed connection methods such as hemming connection, rivet connection, bonding connection, and welding connection. The detachable connection includes but not limited to conventional disassembly methods such as bolt connection, snap connection, pin connection, and hinge connection. When the specific connection method is not clearly defined, it is defaulted that at least one connection method can be found among the existing connection methods to achieve this function, and those skilled in the art can select according to their needs. For example: welding connection is selected for the fixed connection, and bolt connection is selected for the detachable connection.

[0017] The present utility model will be further described in detail below in conjunction with the attached drawings. The following embodiments are explanations of the present utility model, and the present utility model is not limited to the following embodiments.

[0018] Embodiment: As Figure 1-3 shown, a clamping tool for grinding a metallographic specimen flat includes a specimen clamp body 10. The specimen clamp body 10 includes a front clamping plate portion 1, a common clamping plate portion 2, and a rear clamping plate portion 3 arranged at intervals from front to back. The left end of the front clamping plate portion 1 and the left end of the common clamping plate portion 2 are connected by a first connecting plate portion 4, and the right end of the common clamping plate portion 2 and the right end of the rear clamping plate portion 3 are connected by a second connecting plate portion 5 to form a double-opening member in the shape of "ji". The front clamping plate portion 1 and the common clamping plate portion 2 gradually converge from left to right, and the common clamping plate portion 2 and the rear clamping plate portion 3 gradually converge from right to left. One metallographic specimen 6 is clamped between the front clamping plate portion 1 and the common clamping plate portion 2, and another metallographic specimen 6 is clamped between the common clamping plate portion 2 and the rear clamping plate portion 3. The lower ends of the two metallographic specimens 6 protrude from the specimen clamp body 10.

[0019] Currently, the operating method for manually grinding a metallographic specimen is as follows: Each time, hold one specimen by hand and first perform rough grinding on a grinding wheel. Since the metallographic specimen of steel has been quenched, before metallographic observation, it is necessary to grind the specimen to remove the oxide layer by 1-2 mm. The quenched specimen has a high hardness, and the workload of metallographic grinding is relatively large, and the rough grinding step takes the longest time and consumes the most force in the entire grinding process. The present utility model is used for the "rough grinding" step in metallographic grinding and can clamp two metallographic specimens 6 at the same time for grinding, doubling the efficiency.

[0020] The specimen clamp body 10 includes six specifications, and the spacing between the right end of the front clamping plate part 1 and the right end of the common clamping plate part 2, and the spacing between the left end of the common clamping plate part 2 and the left end of the rear clamping plate part 3 are all defined as the opening end spacing, and the spacing between the left end of the front clamping plate part 1 and the left end of the common clamping plate part 2, and the spacing between the right end of the common clamping plate part 2 and the right end of the rear clamping plate part 3 are all defined as the connection end spacing. The first specification of the specimen clamp body 10 has an opening end spacing of 9 mm and a connection end spacing of 11 mm. The second specification of the specimen clamp body 10 has an opening end spacing of 10 mm. The spacing between the opening ends of the specimen clamp body 10 of the third specification is 11mm, and the spacing between the connecting ends is 13mm. The spacing between the opening ends of the specimen clamp body 10 of the fourth specification is 12mm, and the spacing between the connecting ends is 14mm. The spacing between the opening ends of the specimen clamp body 10 of the fifth specification is 13mm, and the spacing between the connecting ends is 15mm. The spacing between the opening ends of the specimen clamp body 10 of the sixth specification is 14mm, and the spacing between the connecting ends is 16mm. The height of the test clamp bodies of the six specifications is 10mm.

[0021] The metallographic sample 6 is generally cut into a rectangular block of 20mm×10mm×15mm. In order to reduce the cutting cost, handheld manual cutting is generally adopted, which is prone to certain deviations. The utility model is manufactured into six specifications. When the outer dimensions of the metallographic sample 6 deviate, the matching sample clamp body 10 can be selected to achieve clamping.

[0022] There are arc bends between the first connecting plate part 4 and the front clamping plate part 1 and the common clamping plate part 2, and there are arc bends between the second connecting plate part 5 and the common clamping plate part 2 and the rear clamping plate part 3. The arc bends can improve the toughness of the sample clamp body 10, form an elastic component, and make the utility model more durable.

[0023] The specimen holder body 10 is a 45# steel component.

[0024] The above embodiments are merely illustrative of the present invention and do not limit its protection scope. Those skilled in the art may also make partial changes thereto, which are within the protection scope of the present invention as long as they do not exceed the spirit of the present invention.

Claims

1. A clamping tool for grinding a metallographic sample, characterized in that: The sample holder body (10) comprises a front clamping plate portion (1), a common clamping plate portion (2) and a rear clamping plate portion (3) which are arranged at intervals from front to rear. The left end of the front clamping plate portion (1) and the left end of the common clamping plate portion (2) are connected via a first connecting plate portion (4), and the right end of the common clamping plate portion (2) and the right end of the rear clamping plate portion (3) are connected via a second connecting plate portion (5), forming a "J"-shaped double-opening component. The front clamping plate portion (1) and the common clamping plate portion (2) gradually converge from left to right, and the common clamping plate portion (2) and the rear clamping plate portion (3) gradually converge from right to left. One metallographic sample (6) is clamped between the front clamping plate portion (1) and the common clamping plate portion (2), and another metallographic sample (6) is clamped between the common clamping plate portion (2) and the rear clamping plate portion (3). The lower ends of the two metallographic samples (6) both protrude from the sample holder body (10).

2. A clamping tool for grinding a metallographic sample according to claim 1, characterized in that: The specimen clamp body (10) includes six specifications, wherein the distance between the right end of the front clamping plate part (1) and the right end of the common clamping plate part (2), and the distance between the left end of the common clamping plate part (2) and the left end of the rear clamping plate part (3) are all open end distances, and the distance between the left end of the front clamping plate part (1) and the left end of the common clamping plate part (2), and the distance between the right end of the common clamping plate part (2) and the right end of the rear clamping plate part (3) are all connection end distances. The first specification of the specimen clamp body (10) has an open end distance of 9 mm and a connection end distance of 11 mm. The second specification of the specimen clamp body (10) has an open end distance of 9 mm and a connection end distance of 11 mm. The spacing between the opening ends is 10 mm, and the spacing between the connecting ends is 12 mm. The spacing between the opening ends of the sample clamp body (10) of the third specification is 11 mm, and the spacing between the connecting ends is 13 mm. The spacing between the opening ends of the sample clamp body (10) of the fourth specification is 12 mm, and the spacing between the connecting ends is 14 mm. The spacing between the opening ends of the sample clamp body (10) of the fifth specification is 13 mm, and the spacing between the connecting ends is 15 mm. The spacing between the opening ends of the sample clamp body (10) of the sixth specification is 14 mm, and the spacing between the connecting ends is 16 mm. The height of the test clamp bodies of the six specifications is 10 mm.

3. The clamping tool for grinding a metallographic sample according to claim 1, characterized in that: Arc bends are provided between the first connecting plate portion (4), the front clamping plate portion (1) and the common clamping plate portion (2), and arc bends are provided between the second connecting plate portion (5), the common clamping plate portion (2) and the rear clamping plate portion (3).

4. A clamping tool for grinding a metallographic sample according to any one of claims 1 to 3, characterized in that: The specimen holder body (10) is a 45# steel component.

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