CN217331986U - Low-temperature stretching device for metal material - Google Patents
Low-temperature stretching device for metal material Download PDFInfo
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- CN217331986U CN217331986U CN202123225386.0U CN202123225386U CN217331986U CN 217331986 U CN217331986 U CN 217331986U CN 202123225386 U CN202123225386 U CN 202123225386U CN 217331986 U CN217331986 U CN 217331986U
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Abstract
The utility model relates to a low-temperature stretching device for metal materials, which comprises a testing barrel, an upper clamp tool, an upper clamping tool, a lower clamp tool and a lower clamping tool, wherein the bottom of the testing barrel is provided with a through hole, the upper end of the testing barrel is clamped and fixed with a barrel cover, the middle of the barrel cover is provided with an assembling hole, the upper clamp tool and the lower clamp tool are arranged in a cavity of the testing barrel, the upper clamp tool and the lower clamp tool are positioned on a central line of the testing barrel, the connecting part of the upper clamp tool and the connecting part of the lower clamp tool are arranged at an interval from top to bottom, the connecting part of the upper clamp is used for connecting the upper end of the metal materials, the connecting part of the lower clamp is used for connecting the lower end of the metal materials, the threaded end of the upper clamp tool passes through the assembling hole of the barrel cover and is fixedly connected with an upper pull rod of a tensile testing machine through the upper clamp tool, the threaded end of the lower clamp tool passes through hole at the bottom of the testing barrel, the lower clamping tool is fixedly connected with a lower pull rod of the tensile testing machine.
Description
Technical Field
The utility model relates to a material test technical field, in particular to metal material low temperature stretching device.
Background
At present, in the design of a low-temperature stretching device for metal materials, no consensus is achieved on the aspects of medium conduction mode, inner cavity structure, fixture tool universality and the like. For example, in terms of medium conduction, a liquid nitrogen spraying system is adopted in part of the low-temperature stretching device, the structure of a related control unit is complex, liquid nitrogen is distributed in a gas state in a spraying state, and the medium temperature is usually difficult to reach a specified range; in the aspect of the structure of the inner cavity, a part of low-temperature stretching devices relate to a plurality of components, the space of the inner cavity for stretching a fixture tool and a sample to move is greatly restricted, and the external size of the stretching device can only be selectively enlarged aiming at a stretching sample with larger size; in the aspect of universality of the clamp tool, most low-temperature stretching devices can only adopt one clamp tool, and switching of the clamp tools for stretching the sample of the plate, the bar and the wire cannot be realized, so that the testing efficiency is very low.
Disclosure of Invention
The utility model aims at prior art's not enough, provide a metal material low temperature stretching device, its simple structure need not to carry out any transformation to conventional tensile testing machine, can seamless butt joint current tensile testing machine, can change different test fixture frock according to actual need.
The technical scheme of the utility model is that: a low-temperature metal material stretching device comprises a testing barrel, an upper clamp tool, an upper clamping tool, a lower clamp tool and a lower clamping tool, wherein a through hole is formed in the bottom of the testing barrel, the upper end of the testing barrel is clamped and fixed with a barrel cover, an assembling hole is formed in the middle of the barrel cover, a liquid nitrogen air inlet is formed in one side of the assembling hole, a liquid nitrogen air outlet is formed in the other side of the assembling hole, the upper clamp tool and the lower clamp tool are installed in a cavity of the testing barrel, the upper clamp tool and the lower clamp tool are located on a central line of the testing barrel, a connecting portion of the upper clamp tool and a connecting portion of the lower clamp tool are arranged in a vertically opposite spaced mode, the connecting portion of the upper clamp tool is used for connecting the upper end of a metal material, the connecting portion of the lower clamp tool is used for connecting the lower end of the metal material, and a threaded end of the upper clamp tool penetrates through the assembling hole of the barrel cover and is connected with the upper clamping tool through threads, go up the centre gripping frock and be connected with tensile testing machine's last pull rod hydraulic clamping, the screw thread end of anchor clamps passes the through-hole of test barrel bottom down, centre gripping frock under the threaded connection, and lower centre gripping frock is connected with tensile testing machine's lower pull rod hydraulic clamping, set up temperature probe in the test barrel, the test barrel both sides are equipped with the handle.
And the side wall of the test barrel is filled with a foam heat-insulating material.
And a sealing gasket is arranged at the through hole at the bottom of the testing barrel.
And the threaded end of the upper clamp tool is connected with an upper clamping tool through threads, and the upper clamping tool is fixedly connected with an upper pull rod of the tensile testing machine through a hydraulic horizontal pushing clamping device.
The thread end of the lower clamp tool is in threaded connection with the lower clamping tool, and the lower clamping tool is fixedly connected with a lower pull rod of the tensile testing machine through the hydraulic horizontal pushing clamping device.
And spring buckles are arranged on the periphery of the barrel cover.
The upper clamp tool and the lower clamp tool are fixedly connected with the metal material through bolts, wire reels or threads.
The upper clamp tool and the lower clamp tool are plate clamps, wire clamps or bar clamps.
The utility model has the advantages that:
the utility model discloses can directly dock current tensile testing machine, need not to reform transform tensile testing machine, the test bucket is inside sealed, and metal material is under liquid nitrogen parcel all the time, has guaranteed that metal material carries out tensile test in accurate, stable low temperature environment; meanwhile, the device is provided with clamp tool joints of different types, so that clamp tools of different types can be conveniently replaced, low-temperature tensile tests on thin plates, thick plates, bars and wires are realized, the device is multipurpose, and the cost is greatly saved.
The invention is further described with reference to the drawings and the specific embodiments.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the barrel cover of the present invention.
Detailed Description
Referring to fig. 1 to 2, the low-temperature metal material stretching device comprises a testing barrel 1, an upper clamp tool 3 and a lower clamp tool 4, wherein a through hole is formed in the bottom of the testing barrel 1, and a sealing gasket 6 is arranged at the through hole in the bottom of the testing barrel 1. The height of the test bucket of this example was 350mm and the width of the test bucket was 175 mm. The side wall of the testing barrel 1 is filled with foam heat-insulating materials, the side wall of the testing barrel 1 is made of stainless steel materials, and other corresponding materials can be adopted. Bung 2 is fixed in 1 upper end joint of test bucket, and bung 2 of this embodiment sets up spring buckle 2d all around, and the spring buckle 2d of this embodiment sets up to four. An assembly hole 2a is formed in the middle of the barrel cover 2, a liquid nitrogen air inlet 2b is formed in one side of the assembly hole 2a, a liquid nitrogen air outlet 2c is formed in the other side of the assembly hole 2a, an upper clamp tool 3 and a lower clamp tool 4 are installed in a cavity of the testing barrel 1, the upper clamp tool 3 and the lower clamp tool 4 are located on a central line of the testing barrel 1, a connecting portion of the upper clamp tool 3 and a connecting portion of the lower clamp tool 4 are arranged at intervals in a vertical opposite mode, the connecting portion of the upper clamp tool 3 is used for connecting the upper end of a metal material, the connecting portion of the lower clamp tool 4 is used for connecting the lower end of the metal material, a threaded end of the upper clamp tool 3 penetrates through the assembly hole 2a of the barrel cover 2, the upper clamp tool 7 is connected through threads, the upper clamp tool 7 is connected with an upper pull rod of a tensile testing machine in a hydraulic clamping mode, and the threaded end of the lower clamp tool 4 penetrates through a through hole in the bottom of the testing barrel 1, the lower clamping tool 8 is in threaded connection, the lower clamping tool 8 is in hydraulic clamping connection with a lower pull rod of the tensile testing machine, three temperature probes are arranged in the testing barrel 1, the three temperature probes are respectively arranged at the connecting portion of the upper clamping tool 3, the connecting portion of the lower clamping tool 4 and the middle portion of the connected tensile metal material, and handles 5 are arranged on two sides of the testing barrel 1.
The upper clamp tool and the lower clamp tool are fixedly connected with the metal material through bolts, wire reels or threads. The upper and lower anchor clamps frock of this embodiment is panel holder, through bolt and sheet metal fixed connection, according to the metal material's of difference nature during the in-service use, still can be through wire reel anchor clamps fixed connection metal silk material, or use rod anchor clamps screw thread fixed connection metal rod.
When the low-temperature tensile test of the metal material is carried out, the device is operated according to the following steps:
firstly, the type of a fixture tool is selected according to the type of a tested metal material, the threaded end of a lower fixture tool 4 is connected with a lower fixture clamping tool 8 in a threaded manner after penetrating through a through hole at the bottom of a testing barrel 1, then the lower clamping tool 8 is hydraulically clamped and connected on a lower pull rod of the tensile testing machine, then the upper clamping tool 7 and the upper clamp tool 3 are connected on an upper pull rod of the tensile testing machine in the same way, the metal material to be tested is fixedly connected between the connecting part of the upper clamp tool and the connecting part of the lower clamp tool through bolts, wire reels or threads, then the barrel cover 2 is clamped and fixed at the upper end of the testing barrel 1 to form sealing inside the testing barrel 1, liquid nitrogen is introduced into the testing barrel 1 through a liquid nitrogen inlet 2b on the barrel cover 2, so that the interior of the testing barrel 1 is always kept at low temperature, and then, starting a tensile test, wherein the temperature measuring probe accurately controls the temperature range of the metal material during the test.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and modifications made by those skilled in the art without departing from the spirit of the present invention all fall into the protection scope of the present invention.
Claims (8)
1. A metal material low temperature stretching device which characterized in that: the device comprises a testing barrel, an upper clamp tool, an upper clamping tool, a lower clamp tool and a lower clamping tool, wherein a through hole is formed in the bottom of the testing barrel, the upper end of the testing barrel is clamped and fixed with the barrel cover, an assembling hole is formed in the middle of the barrel cover, a liquid nitrogen air inlet is formed in one side of the assembling hole, a liquid nitrogen air outlet is formed in the other side of the assembling hole, the upper clamp tool and the lower clamp tool are installed in a cavity of the testing barrel, the upper clamp tool and the lower clamp tool are located on a central line of the testing barrel, a connecting portion of the upper clamp tool and a connecting portion of the lower clamp tool are arranged at an interval in a vertical direction, the connecting portion of the upper clamp tool is used for connecting the upper end of a metal material, the connecting portion of the lower clamp tool is used for connecting the lower end of the metal material, a threaded end of the upper clamp tool penetrates through the assembling hole of the barrel cover and is in threaded connection with the upper clamping tool, and the upper clamping tool is in hydraulic clamping connection with an upper pull rod of a tensile testing machine, the threaded end of the lower clamp tool penetrates through a through hole in the bottom of the testing barrel and is in threaded connection with the lower clamping tool, the lower clamping tool is in hydraulic clamping connection with a lower pull rod of the tensile testing machine, a temperature measuring probe is arranged in the testing barrel, and handles are arranged on two sides of the testing barrel.
2. The low-temperature metal material stretching apparatus as claimed in claim 1, wherein: and the side wall of the test barrel is filled with a foam heat-insulating material.
3. The low-temperature metal material stretching apparatus as claimed in claim 1, wherein: and a sealing gasket is arranged at the through hole at the bottom of the testing barrel.
4. The low-temperature metal material stretching apparatus as claimed in claim 1, wherein: and the threaded end of the upper clamp tool is connected with an upper clamping tool through threads, and the upper clamping tool is fixedly connected with an upper pull rod of the tensile testing machine through a hydraulic horizontal pushing clamping device.
5. The low-temperature metal material stretching apparatus as claimed in claim 1, wherein: the threaded end of the lower clamp tool is in threaded connection with the lower clamping tool, and the lower clamping tool is fixedly connected with a lower pull rod of the tensile testing machine through a hydraulic horizontal pushing clamping device.
6. The apparatus for low-temperature drawing of metallic material according to claim 1, wherein: and spring buckles are arranged on the periphery of the barrel cover.
7. The low-temperature metal material stretching apparatus as claimed in claim 1, wherein: the upper clamp tool and the lower clamp tool are fixedly connected with the metal material through bolts, wire reels or threads.
8. The apparatus for low-temperature drawing of metallic material according to claim 1, wherein: the upper clamp tool and the lower clamp tool can be plate clamp tools or wire clamp tools or bar clamp tools.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123225386.0U CN217331986U (en) | 2021-12-21 | 2021-12-21 | Low-temperature stretching device for metal material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123225386.0U CN217331986U (en) | 2021-12-21 | 2021-12-21 | Low-temperature stretching device for metal material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217331986U true CN217331986U (en) | 2022-08-30 |
Family
ID=82989287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123225386.0U Active CN217331986U (en) | 2021-12-21 | 2021-12-21 | Low-temperature stretching device for metal material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217331986U (en) |
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2021
- 2021-12-21 CN CN202123225386.0U patent/CN217331986U/en active Active
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