CN214277740U - Device for low-temperature tensile test of metal material - Google Patents
Device for low-temperature tensile test of metal material Download PDFInfo
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- CN214277740U CN214277740U CN202023263983.8U CN202023263983U CN214277740U CN 214277740 U CN214277740 U CN 214277740U CN 202023263983 U CN202023263983 U CN 202023263983U CN 214277740 U CN214277740 U CN 214277740U
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- connecting rod
- threaded hole
- temperature tensile
- anchor clamps
- heat
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Abstract
The utility model provides a device for metal material low temperature tensile test, including heat preservation bucket, lower anchor clamps, upper anchor clamps, bolt and nut, the heat preservation bucket is used for holding cryogenic liquid and keeps warm, and heat preservation bucket bottom is seted up through-hole and first screw hole, lower anchor clamps include head rod, second connecting rod and spacing ring, the second screw hole is seted up at the head rod top, and the head rod bottom is fixed with the second connecting rod, and the spacing ring cover is located the head rod, and the spacing ring is fixed with the second connecting rod, set up the third screw hole on the spacing ring, the nut inserts and locates third screw hole and first screw hole and fix through the bolt, upper anchor clamps are located the heat preservation bucket and are located directly over the lower anchor clamps, upper anchor clamps are used for being connected with tensile testing machine and stretching the metal, through setting metal material in cryogenic liquid, the low-temperature tensile test can be carried out on the deformed steel bar without a closed environment, and the device is simpler.
Description
Technical Field
The utility model relates to a low temperature tensile test device field especially relates to a device for metal material low temperature tensile test.
Background
With the rapid development of modern industries, more and more metal materials such as deformed steel bars and the like need to be used in a low-temperature environment, and low-temperature pressure vessels, bridges and the like need to be used for the metal materials such as the low-temperature deformed steel bars and the like, so that the accurate measurement of various mechanical properties of the materials is of great importance, and particularly the tensile property indexes such as yield strength, tensile strength, elongation and shrinkage of samples are the same.
The existing method for testing the low-temperature tensile force of the deformed steel bar is to cool the closed environment through a refrigerating device in the closed environment, then clamp the bottom of the deformed steel bar through a clamping device, and stretch the deformed steel bar through a tensile testing machine above the deformed steel bar to detect performance indexes such as the low-temperature tensile strength of the deformed steel bar. However, this method requires sealing, which makes the low-temperature tensile test apparatus for metal materials very complicated.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a device for metal material low temperature tensile test need not to carry out low temperature tensile test to the screw-thread steel under airtight environment, and the device is simpler.
The technical scheme of the utility model is realized like this: the utility model provides a device for low-temperature tensile test of metal materials, which comprises a heat-insulating barrel, a lower clamp, an upper clamp, a bolt and a nut, the heat-insulating barrel is used for containing low-temperature liquid and insulating heat, the bottom of the heat-insulating barrel is provided with a through hole and a first threaded hole, the lower clamp comprises a first connecting rod, a second connecting rod and a limiting ring, a second threaded hole is formed in the top of the first connecting rod, the bottom of the first connecting rod is fixed with the second connecting rod, the diameter of the second connecting rod is larger than that of the first connecting rod, the limiting ring is sleeved on the first connecting rod, the limiting ring is fixed with the second connecting rod, a third threaded hole is arranged on the limiting ring, the nut is inserted in the third threaded hole and the first threaded hole and fixed through a bolt, the upper clamp is positioned in the heat-insulating barrel and right above the lower clamp, and the upper clamp is used for being connected with a tensile testing machine and stretching metal.
On the basis of the technical scheme, preferably, the lower clamp is made of stainless steel.
On the basis of the technical scheme, preferably, the heat-insulating barrel is made of invar alloy.
On the basis of the above technical scheme, preferably, the lower clamp further comprises a sealing ring, the sealing ring is sleeved on the first connecting rod and located above the limiting ring, a fourth threaded hole is formed in the sealing ring, and the nut is inserted into the fourth threaded hole, the third threaded hole and the first threaded hole and fixed through bolts.
Preferably, the number of the bolts and the number of the nuts are multiple, and the number of the fourth threaded holes, the number of the third threaded holes and the number of the first threaded holes are multiple and all surround the axis of the first connecting rod.
On the basis of the above technical scheme, preferably, the upper clamp includes a first fixing rod, and a fifth threaded hole is formed in the bottom of the first fixing rod.
Further preferably, the upper clamp further comprises a second fixing rod, the second fixing rod is fixed to the top of the first fixing rod, an external thread is formed in the top of the second fixing rod, and the second fixing rod can be in threaded connection with the second threaded hole.
On the basis of the technical scheme, the heat preservation barrel is preferably characterized by further comprising a base, wherein a groove is formed in the top of the base, the heat preservation barrel is placed in the groove, a hole is formed in the base, and the second connecting rod is located in the hole.
The utility model discloses a device for metal material low temperature tensile test has following beneficial effect for prior art:
(1) by arranging the heat-insulating barrel, the heat-insulating barrel is used for containing low-temperature liquid and insulating heat, and the deformed steel bar is placed in the low-temperature liquid, the low-temperature tensile test can be performed on the deformed steel bar without a closed environment, and the device is simpler;
(2) the lower clamp can be hermetically fixed at the bottom of the heat-insulating barrel by arranging the first connecting rod, the second connecting rod and the limiting ring, so that low-temperature liquid is prevented from flowing out of the lower clamp;
(3) by arranging the sealing ring, the sealing performance can be better, and the low-temperature liquid is prevented from flowing out of the lower clamp;
(4) through setting up the second dead lever, the second dead lever is fixed in first dead lever top, the external screw thread has been seted up at second dead lever top, and the second dead lever can with second screw hole threaded connection, so when the device need not to use, can prevent to go up anchor clamps and lose with second dead lever and second screw hole threaded connection.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic perspective view of a thermal insulation barrel of a device for a low-temperature tensile test of a metal material according to the present invention;
fig. 2 is a schematic perspective view of an upper clamp of the apparatus for low-temperature tensile test of metal material according to the present invention;
fig. 3 is a schematic perspective view of a nut of an apparatus for low-temperature tensile test of metal materials according to the present invention;
fig. 4 is a schematic perspective view of a lower clamp of the apparatus for low-temperature tensile test of metal material according to the present invention;
fig. 5 is a schematic perspective view of a first threaded hole of the device for low-temperature tensile test of metal materials according to the present invention;
fig. 6 is a schematic perspective view of a base of the device for low-temperature tensile test of metal materials according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.
As shown in figure 1, with reference to figures 2-6, the embodiment of the utility model discloses a device for metal material low temperature tensile test, including heat-preserving container 1, lower anchor clamps 2, upper fixture 3, bolt 4, nut 5 and base 6.
The heat-preserving container 1 is used for containing low-temperature liquid and preserving heat. The heat-insulating barrel 1 is made of invar alloy. Through placing the screw-thread steel in low temperature liquid, can need not to carry out low temperature tensile test to the screw-thread steel under airtight environment, the device is simpler. The cryogenic liquid may be liquid nitrogen, a mixture of ice and water, or the like.
The lower clamp 2 is arranged at the bottom of the heat-preserving barrel 1 and used for fixing the bottom of the deformed steel bar. Specifically, the bottom of the heat-preserving barrel 1 is provided with a through hole 11 and a first threaded hole 12, the lower clamp 2 comprises a first connecting rod 21, a second connecting rod 22 and a limiting ring 23, the top of the first connecting rod 21 is provided with a second threaded hole 211, the bottom of the first connecting rod 21 is fixed with the second connecting rod 22, the diameter of the second connecting rod 22 is larger than that of the first connecting rod 21, the limiting ring 23 is sleeved on the first connecting rod 21, the limiting ring 23 is fixed with the second connecting rod 22, the limiting ring 23 is provided with a third threaded hole 231, and the nut 5 is inserted in the third threaded hole 231 and the first threaded hole 12 and fixed through a bolt 4. By providing the retainer ring 23, the cryogenic liquid can be prevented from flowing out from the lower jig 2. The deformed steel bar is disposed in the second screw hole 211.
The lower clamp 2 is made of stainless steel. Because lower anchor clamps 2 are different with 1 material of heat-preserving container, can't the direct welding, consequently need be fixed through dismantling sealed.
To prevent the cryogenic liquid from flowing out of the lower clamp 2. More specifically, the lower clamp 2 further includes a sealing ring 24, the sealing ring 24 is sleeved on the first connecting rod 21 and located above the limiting ring 23, a fourth threaded hole 241 is formed in the sealing ring 24, and the nut 5 is inserted into the fourth threaded hole 241, the third threaded hole 231 and the first threaded hole 12 and fixed by the bolt 4. By arranging the sealing ring 24, the sealing performance can be better, and the low-temperature liquid is prevented from flowing out from the lower clamp 2.
To make the seal ring 24 more securely fixed. More specifically, the number of the bolts 4 and the number of the nuts 5 are multiple, and the number of the fourth threaded holes 241, the number of the third threaded holes 231, and the number of the first threaded holes 12 are multiple and all surround the axis of the first connecting rod 21.
Go up anchor clamps 3 and be located 2 directly over of anchor clamps in heat-preserving container 1, go up anchor clamps 3 and be used for being connected with tensile testing machine and stretch the metal. Specifically, the upper clamp 3 includes a first fixing rod 31, and a fifth threaded hole 311 is formed at the bottom of the first fixing rod 31. The deformed steel bar is disposed in the fifth screw hole 311.
To prevent the upper clamp 3 from being lost. More specifically, the upper clamp 3 further includes a second fixing rod 32, the second fixing rod 32 is fixed to the top of the first fixing rod 31, an external thread is formed on the top of the second fixing rod 32, and the second fixing rod 32 can be in threaded connection with the second threaded hole 211. Thus, when the device is not needed to be used, the second fixing rod 32 can be connected with the second threaded hole 211 in a threaded mode, and the upper clamp 3 is prevented from being lost.
The bolt 4 and the nut 5 are used for fixing the lower clamp 2 at the bottom of the heat-preserving barrel 1.
The base 6 is used for fixing the heat-preserving barrel 1. Specifically, the top of the base 6 is provided with a groove 61, the heat-insulating barrel 1 is placed in the groove 61, the base 6 is provided with an opening 62, and the second connecting rod 22 is located in the opening 62. By locating the second connecting rod 22 in the opening 62, it is convenient to fix the second connecting rod 22 and thus the lower clamp 2.
The utility model discloses be not limited to the low temperature tensile test to the screw-thread steel. Any metal material with external threads arranged at the bottom and the top can be subjected to low-temperature tensile test. Meanwhile, the lower clamp 2 and the upper clamp 3 can be replaced to meet the requirements of different metal materials.
The utility model discloses a theory of operation of a device for metal material low temperature tensile test does: the deformed steel bar is fixed in the fifth threaded hole 311 of the upper clamp 3 and the second threaded hole 211 of the lower clamp 2, low-temperature liquid (such as a mixture of liquid nitrogen, ice and water) is added into the heat-insulating barrel 1, the low-temperature liquid overflows the deformed steel bar, the second connecting rod 22 and the first fixing rod 31 are stretched by using a tensile testing machine, and the tensile strength of the deformed steel bar can be detected.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A device for low temperature tensile test of metal material is characterized in that: comprises a heat-insulating barrel (1), a lower clamp (2), an upper clamp (3), a bolt (4) and a nut (5);
the heat-insulating barrel (1) is used for containing low-temperature liquid and insulating heat, and the bottom of the heat-insulating barrel (1) is provided with a through hole (11) and a first threaded hole (12);
the lower clamp (2) comprises a first connecting rod (21), a second connecting rod (22) and a limiting ring (23);
the top of the first connecting rod (21) is provided with a second threaded hole (211), the bottom of the first connecting rod (21) is fixed with a second connecting rod (22), the diameter of the second connecting rod (22) is larger than that of the first connecting rod (21), a limiting ring (23) is sleeved on the first connecting rod (21), the limiting ring (23) is fixed with the second connecting rod (22), and the limiting ring (23) is provided with a third threaded hole (231);
the nut (5) is inserted into the third threaded hole (231) and the first threaded hole (12) and fixed through the bolt (4);
go up anchor clamps (3) and be located holding vessel (1) and be located directly over anchor clamps (2), go up anchor clamps (3) and be used for being connected with tensile testing machine and carry out the tensile to the metal.
2. The apparatus for low temperature tensile testing of metallic materials of claim 1, wherein: the lower clamp (2) is made of stainless steel.
3. The apparatus for low temperature tensile testing of metallic materials of claim 1, wherein: the heat-insulating barrel (1) is made of invar alloy.
4. The apparatus for low temperature tensile testing of metallic materials of claim 1, wherein: the lower clamp (2) further comprises a sealing ring (24), the sealing ring (24) is sleeved on the first connecting rod (21) and located above the limiting ring (23), a fourth threaded hole (241) is formed in the sealing ring (24), and the nut (5) is inserted into the fourth threaded hole (241), the third threaded hole (231) and the first threaded hole (12) and fixed through the bolt (4).
5. The apparatus for low temperature tensile testing of metallic materials of claim 4, wherein: the number of the bolts (4) and the number of the nuts (5) are multiple, and the number of the fourth threaded holes (241), the number of the third threaded holes (231) and the number of the first threaded holes (12) are multiple and all surround the axis of the first connecting rod (21).
6. The apparatus for low temperature tensile testing of metallic materials of claim 1, wherein: the upper clamp (3) comprises a first fixing rod (31), and a fifth threaded hole (311) is formed in the bottom of the first fixing rod (31).
7. The apparatus for low temperature tensile testing of metallic materials of claim 6, wherein: the upper clamp (3) further comprises a second fixing rod (32), the second fixing rod (32) is fixed to the top of the first fixing rod (31), an external thread is formed in the top of the second fixing rod (32), and the second fixing rod (32) can be in threaded connection with the second threaded hole (211).
8. The apparatus for low temperature tensile testing of metallic materials of claim 1, wherein: still include base (6), base (6) top is provided with recess (61), heat-preserving container (1) is placed in recess (61), trompil (62) have been seted up on base (6), second connecting rod (22) are located trompil (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023263983.8U CN214277740U (en) | 2020-12-29 | 2020-12-29 | Device for low-temperature tensile test of metal material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023263983.8U CN214277740U (en) | 2020-12-29 | 2020-12-29 | Device for low-temperature tensile test of metal material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214277740U true CN214277740U (en) | 2021-09-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023263983.8U Active CN214277740U (en) | 2020-12-29 | 2020-12-29 | Device for low-temperature tensile test of metal material |
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|---|---|
| CN (1) | CN214277740U (en) |
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- 2020-12-29 CN CN202023263983.8U patent/CN214277740U/en active Active
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