CN215339280U - Clamping device for measuring elongation and reduction of area of metal tensile sample after fracture - Google Patents

Clamping device for measuring elongation and reduction of area of metal tensile sample after fracture Download PDF

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Publication number
CN215339280U
CN215339280U CN202121798552.3U CN202121798552U CN215339280U CN 215339280 U CN215339280 U CN 215339280U CN 202121798552 U CN202121798552 U CN 202121798552U CN 215339280 U CN215339280 U CN 215339280U
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CN
China
Prior art keywords
fracture
chuck
metal tensile
clamping
elongation
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Active
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CN202121798552.3U
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Chinese (zh)
Inventor
余超
张泽宇
许彬
张晓斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Huake Tonghe Technology Co ltd
Xilinguole Thermal Power Co ltd
State Grid Corp of China SGCC
North China Electric Power Research Institute Co Ltd
Original Assignee
Beijing Huake Tonghe Technology Co ltd
Xilinguole Thermal Power Co ltd
State Grid Corp of China SGCC
North China Electric Power Research Institute Co Ltd
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Application filed by Beijing Huake Tonghe Technology Co ltd, Xilinguole Thermal Power Co ltd, State Grid Corp of China SGCC, North China Electric Power Research Institute Co Ltd filed Critical Beijing Huake Tonghe Technology Co ltd
Priority to CN202121798552.3U priority Critical patent/CN215339280U/en
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Abstract

The utility model relates to a clamping device for measuring the elongation and the reduction of area after fracture of a metal tensile sample, which comprises a chuck structure and a propping structure, wherein the chuck structure is used for clamping the metal tensile sample after fracture of a first section, the propping structure and the chuck structure are coaxially arranged, the propping structure can adjust the length along the axial direction, and the propping structure is used for propping and fixing the metal tensile sample after fracture of a second section and enabling the fracture of the metal tensile sample after fracture of the second section to be matched and propped against the fracture of the metal tensile sample after fracture of the first section. The method effectively improves the accuracy and the detection efficiency of measuring the elongation after fracture and the section shrinkage of the metal tensile sample.

Description

Clamping device for measuring elongation and reduction of area of metal tensile sample after fracture
Technical Field
The utility model relates to the technical field of power equipment detection, in particular to a clamping device for measuring the elongation and the reduction of area after fracture of a metal tensile sample.
Background
When the elongation after fracture and the section shrinkage are measured after the metal material tensile test, the detection difficulty is higher because the interfaces of the broken sample are not regular; an auxiliary measurement test block is commonly used at present, the test block is provided with a V-shaped groove and magnetism, although the test block can well contact and fix the section of a sample, the requirement that the section shrinkage rate measurement of the sample can be completed in two directions perpendicular to the sample at one time cannot be met, and the section cannot be well contacted with the sample without magnetism (an austenitic stainless steel sample), so that the accuracy of the measurement is influenced. Therefore, in order to improve the efficiency of measuring the elongation and the reduction of area after fracture of the metal material tensile sample and the detection accuracy of the non-magnetic sample, the inventor invents a clamping tool for measuring the elongation and the reduction of area after fracture of the metal material tensile sample.
An auxiliary measurement test block 8 which is used at present is shown in fig. 4, the test block is provided with a V-shaped groove and magnetism, a fracture is aligned by the magnetism when a test piece is placed in the V-shaped groove, and the elongation and the reduction of area after fracture are measured. However, this structure has the following problems:
1. the test block fixes the sample through magnetism, and the fracture of the sample cannot be aligned with a good end face, so that the measurement accuracy is influenced;
2. the measurement in the vertical direction cannot be completed at one time when the reduction of area is measured, and the measurement efficiency is low;
3. it is not suitable for non-magnetic materials.
Therefore, the inventor provides a clamping device for measuring the elongation and the reduction of area after fracture of a metal tensile sample by virtue of experience and practice of related industries for many years, so as to overcome the defects in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a clamping device for measuring the elongation after fracture and the reduction of section of a metal tensile sample, which effectively improves the accuracy and the detection efficiency for measuring the elongation after fracture and the reduction of section of the metal tensile sample.
The clamping device comprises a chuck structure and a propping structure, wherein the chuck structure is used for clamping a first section of fractured metal tensile sample, the propping structure and the chuck structure are coaxially arranged, the length of the propping structure can be adjusted along the axial direction, and the propping structure is used for propping and fixing a second section of fractured metal tensile sample and enabling a fracture of the second section of fractured metal tensile sample to be matched and propped with a fracture of the first section of fractured metal tensile sample.
In a preferred embodiment of the present invention, the chuck structure includes a chuck, one end of the chuck is fixed, the other end of the chuck is provided with a clamping opening capable of adjusting a radial dimension, and the clamping opening is capable of inserting the first broken metal tensile sample therein.
In a preferred embodiment of the present invention, the chuck structure further includes a first support frame, and the first support frame is fixedly connected to one end of the chuck.
In a preferred embodiment of the present invention, the chuck is an electric hammer chuck.
In a preferred embodiment of the present invention, the abutting structure includes a fixing nut, the fixing nut and the chuck are coaxially disposed, and the fixing nut can movably penetrate through the ejector rod.
In a preferred embodiment of the present invention, one end of the ejector rod is provided with a conical head, and the other end of the ejector rod is provided with a boss with an enlarged diameter.
In a preferred embodiment of the present invention, the top rod is a screw of M10X300 mm.
In a preferred embodiment of the present invention, the abutting structure further includes a second supporting frame, and the fixing nut is fixed to a top end of the second supporting frame.
In a preferred embodiment of the present invention, the bottom portions of the first supporting frame and the second supporting frame are fixedly connected to the bottom plate.
In a preferred embodiment of the present invention, the first support frame and the second support frame are made of channel steel, the bottom plate is made of a steel plate, and the first support frame and the second support frame are welded to the bottom plate.
From the above, the clamping device for measuring the elongation after fracture and the reduction of area of the metal tensile sample provided by the utility model has the following beneficial effects:
in the clamping device for measuring the elongation and the reduction of area after the fracture of the metal tensile sample, the chuck structure and the abutting structure are matched to fixedly clamp the 2 sections after the fracture of the metal tensile sample, and the fracture of the fractured sample is tightly inosculated together, so that the measurement in the vertical direction can be completed at one time without being limited by sample materials, and the accuracy and the detection efficiency for measuring the elongation and the reduction of area after the fracture of the metal tensile sample are effectively improved; the radial size of the clamping opening of the clamping head can be adjusted, and samples with different diameters can be clamped.
Drawings
The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:
FIG. 1: the schematic diagram of the clamping device for measuring the elongation and the reduction of area after fracture of the metal tensile sample is shown in the utility model.
FIG. 2: is a schematic representation of a metal tensile specimen.
FIG. 3: is a schematic diagram of the use process of the utility model.
FIG. 4: is a schematic diagram of an auxiliary measuring test block in the prior art.
In the figure:
100. the clamping device is used for measuring the elongation and the reduction of area of the metal tensile sample after fracture;
1. a chuck structure;
11. a chuck; 12. a first support frame;
2. a propping structure;
21. fixing a nut; 22. a top rod; 221. a conical plug; 222. a boss; 23. a second support frame;
3. a base plate;
8. auxiliary measurement test blocks;
9. a metal tensile specimen; 91. stretching the sample by the metal after the first section; 92. and (5) stretching the sample by the second-stage post-fracture metal.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings.
The specific embodiments of the present invention described herein are for the purpose of illustration only and are not to be construed as limiting the utility model in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1, the present invention provides a clamping device 100 for measuring elongation after fracture and reduction of area of a metal tensile sample, including a chuck structure 1 and a propping structure 2, where the chuck structure 1 is used to clamp a first section of fractured metal tensile sample 91 (as shown in fig. 2, a fracture of a metal tensile sample 9 is broken into 2 sections at the fracture, which are respectively set as a first section of fractured metal tensile sample 91 and a second section of fractured metal tensile sample 92), the propping structure 2 is coaxially arranged with the chuck structure 1, the propping structure 2 can adjust length along an axial direction, and the propping structure 2 is used to prop and fix the second section of fractured metal tensile sample 92 and make a fracture of the second section of fractured metal tensile sample coincide with a fracture of the first section of fractured metal tensile sample.
In the clamping device for measuring the elongation and the reduction of area after fracture of the metal tensile sample, the chuck structure and the abutting structure are matched to fixedly clamp the 2 sections after fracture of the metal tensile sample, and the fracture of the fractured sample is tightly inosculated together, so that the measurement in the vertical direction can be completed at one time without being limited by sample materials, and the accuracy and the detection efficiency for measuring the elongation and the reduction of area after fracture of the metal tensile sample are effectively improved.
Further, the chuck structure 1 includes the chuck 11, and one end of chuck 11 is fixed, and the other end of chuck 11 sets up the centre gripping opening that can adjust radial dimension, and the first section back metal tensile sample 91 (the exposed core) of establishing can be inserted in the centre gripping opening. The radial size (aperture) of the clamping opening can be adjusted, and samples with different diameters can be clamped.
Further, the chuck structure 1 further comprises a first support frame 12, and the first support frame 12 is fixedly connected with one end of the chuck 11.
In the present embodiment, the chuck 11 is an electric hammer chuck.
Further, the abutting structure 2 comprises a fixing nut 21, the fixing nut 21 and the chuck 11 are coaxially arranged, and the fixing nut 21 can movably penetrate through the ejector rod 22. The ejector rod 22 is matched with the fixing nut 21, so that the ejector rod 22 can be screwed to eject samples with different lengths, and meanwhile, fracture parts of the samples after being pulled off are tightly inosculated together.
Further, a tapered head 221 is provided at one end of the jack 22, and a boss 222 having an increased diameter is provided at the other end of the jack 22. The conical top 221 is convenient for abutting and fixing the second-stage broken metal tensile sample 92, and the boss 222 is convenient for the rotating movement of the ejector rod 22.
In one embodiment of the present invention, the ejector 22 is a screw of M10X300 mm.
Further, the abutting structure 2 further includes a second supporting frame 23, and the fixing nut 21 is fixed on the top end of the second supporting frame 23.
Further, the bottoms of the first support frame 12 and the second support frame 23 are fixedly connected to the bottom plate 3. The first support frame 12, the second support frame 23 and the bottom plate 3 together form a support structure of the device.
In the present embodiment, the first support frame 12 and the second support frame 23 are formed of channel steel, the bottom plate 3 is formed of a steel plate, and the first support frame 12 and the second support frame 23 are welded to the bottom plate 3.
The use process of the clamping device 100 for measuring the elongation and the reduction of area after fracture of the metal tensile sample is as follows:
breaking the metal tensile sample into 2 sections at the fracture after the metal tensile sample is broken, and setting the sections as a first section broken metal tensile sample 91 and a second section broken metal tensile sample 92 respectively; fixing the first post-fracture metal tensile sample 91 by using a chuck 11, aligning the port of the second post-fracture metal tensile sample 92 with the fracture of the first post-fracture metal tensile sample 91 in a matching manner, rotating the ejector rod 22 to push the second post-fracture metal tensile sample 92, continuing to rotate the ejector rod 22 to clamp the first post-fracture metal tensile sample 91 and the second post-fracture metal tensile sample 92 tightly, and measuring the post-fracture elongation and the fracture surface shrinkage as shown in fig. 3.
From the above, the clamping device for measuring the elongation after fracture and the reduction of area of the metal tensile sample provided by the utility model has the following beneficial effects:
in the clamping device for measuring the elongation and the reduction of area after the fracture of the metal tensile sample, the chuck structure and the abutting structure are matched to fixedly clamp the 2 sections after the fracture of the metal tensile sample, and the fracture of the fractured sample is tightly inosculated together, so that the measurement in the vertical direction can be completed at one time without being limited by sample materials, and the accuracy and the detection efficiency for measuring the elongation and the reduction of area after the fracture of the metal tensile sample are effectively improved; the radial size of the clamping opening of the clamping head can be adjusted, and samples with different diameters can be clamped.
The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the utility model should fall within the protection scope of the utility model.

Claims (10)

1. The utility model provides a measure elongation and percentage of area's clamping device after metal tensile sample breaks, a serial communication port, support the structure including chuck structure and top, the chuck structure is used for the first section metal tensile sample after breaking of centre gripping, the top support the structure with the chuck structure is coaxial setting, the top supports the structure and can follow axial adjustment length, the top supports the structure and is used for supporting fixed second section metal tensile sample after breaking and makes the fracture of second section metal tensile sample after breaking coincide with the fracture of first section metal tensile sample after breaking and supports.
2. The clamping device for measuring the post fracture elongation and the post fracture reduction of area of a metal tensile sample as claimed in claim 1, wherein the chuck structure comprises a chuck, one end of the chuck is fixed, the other end of the chuck is provided with a clamping opening capable of adjusting the radial dimension, and a first section of post fracture metal tensile sample can be inserted into the clamping opening.
3. The clamping device for measuring elongation and reduction of area after fracture of a metal tensile specimen of claim 2, wherein the chuck structure further comprises a first support frame, the first support frame being fixedly connected to one end of the chuck.
4. The apparatus for measuring elongation after break and reduction of area of a metal tensile specimen of claim 2, wherein said chuck is an electric hammer chuck.
5. The clamping device for measuring the elongation and the reduction of area after fracture of a metal tensile sample according to claim 3, wherein the abutting structure comprises a fixing nut, the fixing nut and the chuck are coaxially arranged, and the fixing nut is movably inserted through the ejector rod.
6. The clamping device for measuring the elongation and the reduction of area after fracture of a metal tensile specimen according to claim 5, wherein a conical head is arranged at one end of the ejector rod, and a boss with an enlarged diameter is arranged at the other end of the ejector rod.
7. The clamping device for measuring elongation after break and reduction of area of a metal tensile specimen of claim 5, wherein the ejector pin is a screw of M10X300 mm.
8. The clamping device for measuring the elongation and the reduction of area after fracture of a metal tensile specimen according to claim 5, wherein the abutting structure further comprises a second supporting frame, and the fixing nut is fixed at the top end of the second supporting frame.
9. The apparatus of claim 8, wherein the first support and the second support are fixedly attached to the base plate at the bottom.
10. The clamping device for measuring the elongation and the reduction of area of a metal tensile specimen after fracture as set forth in claim 9, wherein the first support frame and the second support frame are made of channel steel, the bottom plate is made of steel plate, and the first support frame and the second support frame are welded to the bottom plate.
CN202121798552.3U 2021-08-03 2021-08-03 Clamping device for measuring elongation and reduction of area of metal tensile sample after fracture Active CN215339280U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121798552.3U CN215339280U (en) 2021-08-03 2021-08-03 Clamping device for measuring elongation and reduction of area of metal tensile sample after fracture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121798552.3U CN215339280U (en) 2021-08-03 2021-08-03 Clamping device for measuring elongation and reduction of area of metal tensile sample after fracture

Publications (1)

Publication Number Publication Date
CN215339280U true CN215339280U (en) 2021-12-28

Family

ID=79575363

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121798552.3U Active CN215339280U (en) 2021-08-03 2021-08-03 Clamping device for measuring elongation and reduction of area of metal tensile sample after fracture

Country Status (1)

Country Link
CN (1) CN215339280U (en)

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