CN206362621U - A kind of tensile testing device of molybdenum and molybdenum alloy tubing - Google Patents
A kind of tensile testing device of molybdenum and molybdenum alloy tubing Download PDFInfo
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- CN206362621U CN206362621U CN201621331620.4U CN201621331620U CN206362621U CN 206362621 U CN206362621 U CN 206362621U CN 201621331620 U CN201621331620 U CN 201621331620U CN 206362621 U CN206362621 U CN 206362621U
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- wedge
- molybdenum
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- testing machine
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Abstract
The tensile testing device of a kind of molybdenum and molybdenum alloy tubing of the present utility model, including universal testing machine, are arranged on the high temperature furnace between the upper and lower crossbeam of universal testing machine, it is characterised in that described device also includes two structure identical upper fixtures and lower clamp；The upper fixture is fixed on the entablature of universal testing machine, and the lower clamp is fixed on the sill of universal testing machine, and the bare terminal end of two fixture is stretched into high temperature furnace and is oppositely arranged；The bare terminal end of the fixture is the cavity with conical cavity, multiple wedge-shaped fixture blocks are provided with the conical cavity, the cavity inner wall is provided with the chute matched with wedge-shaped fixture block, and the wedge-shaped fixture block is located in chute, and screw mandrel is provided between the wedge-shaped fixture block and chamber outer wall.The utility model is rational in infrastructure, and it is convenient to dismantle, clamping to different pipe diameters can be achieved, it is to avoid the slip of sample and cracking during high temperature tension test, it is ensured that the homogeneous deformation of tubing under high temperature.
Description
Technical field
The utility model is related to metal material mechanics performance detection technical field, and in particular to a kind of molybdenum and molybdenum alloy tubing
Tensile testing device.
Background technology
As molybdenum and molybdenum alloy bar, tubing are in the wide of the fields such as Aeronautics and Astronautics, navigation, the energy, electronics, chemical industry and medical treatment
General application, studies its mechanical property test under high-temperature work environment more and more important.
Existing to divide high temperature tensile property of thin-walled pipe test two ways, one kind is to lengthen tubing specimen length, is made
Tubular product sample is reached to be connected outside body of heater with clamp body, completes the high temperature tension test of thin-wall pipes, this mode can be caused
The waste of tubular product sample, especially for rare metallic material, while it is uneven to be heated on tubular product sample length direction, can lead
Cause test result inaccurate or even invalid.Another is that clamp body and tubular product sample are all placed in furnace chamber high-temperature area, complete
Into high temperature tension test, requirement of this mode to fixture is higher.Existing fixture is main by groups such as push rod, sleeve and fixture blocks
Into, this fixture due to push rod as an entirety during fixture block is pushed, fixture block is in the case of discontinuity, easily
Tubular product sample is deviateed the center line of fixture and be difficult regulation, tubing is born certain shear stress, simultaneously because push rod
Pressure is uncontrollable, is easily caused the landing of tubular product sample, folder and splits or draw phenomenon of slitting, makes test failure.And existing fixture
All it is the tubing band temperature tensile property test completed under room temperature or middle cryogenic conditions, is closed for completing molybdenum and molybdenum at 1200 DEG C
The tensile property test of golden tubing.Due to the limitation of examined condition, the country yet there are no carries out material during tensile at 1200 DEG C
The report of performance test.
The content of the invention
There is provided the stretching of a kind of molybdenum and molybdenum alloy tubing aiming at the deficiency that above-mentioned prior art is present for the utility model
The equipment that performance is detected.
The utility model is just achieved through the following technical solutions.
A kind of tensile testing device of molybdenum and molybdenum alloy tubing, including universal testing machine, are arranged on universal testing machine upper and lower
High temperature furnace between crossbeam, it is characterised in that the equipment also includes two structure identical upper fixtures and lower clamp；On described
Fixture is fixed on the entablature of universal testing machine, and the lower clamp is fixed on the sill of universal testing machine, two folder
The bare terminal end of tool is stretched into high temperature furnace and is oppositely arranged；The bare terminal end of two fixture is with conical cavity
Cavity, circular mounting hole is provided with the cavity end, and the circular mounting hole is communicated with conical cavity, and the cone is empty
Intracavitary is provided with multiple vertical wedge-shaped fixture blocks, and the cavity inner wall is provided with the chute matched with wedge-shaped fixture block, the wedge-shaped fixture block
In chute, screw mandrel is provided between the wedge-shaped fixture block and chamber outer wall.
According to above-mentioned equipment, it is characterised in that the clamping face of the wedge-shaped fixture block is dentalation.
According to above-mentioned equipment, it is characterised in that the material of two fixture is molybdenum-lanthanum alloy or tungsten-molybdenum alloy.
Advantageous effects of the present utility model, the utility model provides a kind of draftability to molybdenum and molybdenum alloy tubing
The equipment that can be detected, the utility model has following several big advantages：
（1）The utility model uses the special fixture that is prepared into of heat-resisting alloy, overcomes molybdenum and molybdenum alloy tensile sample
Oxidation and conventional brace high temperature deformation, cause sample during tension test to slide, draw the defect such as open-minded, breach conventional high-temperature stretching
The limitation of temperature spot, meets demand of the nuclear power industry client to high temperature tension test, improves the confidence level of detection data, fills out
The blank in domestic Metal Materials At High Temperature extension test field is mended.
（2）The tubing special fixture that the utility model is provided is rational in infrastructure, and it is convenient to dismantle, and can be achieved to different pipe diameters
Clamping, it is to avoid the slip of sample and cracking during high temperature tension test, it is ensured that the homogeneous deformation of tubing under high temperature,
Test result, which accurately and reliably, with tradition is cut into band sample, to be compared, and shortens the test period, reduces testing cost, and work as
After tubing special fixture is used for multiple times, during the clamping face wear out failure of wedge-shaped fixture block, the wedge-shaped fixture block that only need to more renew leads to
It is strong with property.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the assembling schematic diagram of tubing special fixture.
Fig. 3 for Fig. 2 A-A to diagrammatic cross-section.
Fig. 4 is the diagrammatic cross-section of a pair of wedge-shaped fixture blocks.
Fig. 5 is the top view of tubing special fixture.
Embodiment
As Figure 1-Figure 5, a kind of tensile testing device of molybdenum and molybdenum alloy tubing, including universal testing machine 1, high temperature furnace
2, two structure identical upper fixtures 3 and lower clamp 4；High temperature furnace be arranged on universal testing machine entablature 5 and sill 6 it
Between, supported, pacified on the sliding support 8 of universal testing machine opposite side by the runing rest 7 for being arranged on universal testing machine side
Equipped with extensometer 9, the working end of extensometer is stretched into stove from high temperature furnace sidewall, and high temperature furnace is also associated with temperature controller 10, temperature
Degree controller is used for the temperature for controlling high temperature furnace；Upper fixture is fixed on the entablature of universal testing machine by connecting rod 11, under
Fixture is fixed on the sill of universal testing machine by connecting rod 12, the bare terminal ends of two fixtures stretch into high temperature furnace and
It is oppositely arranged, two fixtures are used cooperatively；The bare terminal end of two fixtures is the cavity 13 with conical cavity, is opened in cavity end
There is circular mounting hole, circular mounting hole is communicated with conical cavity, multiple wedge grips placed vertically are provided with conical cavity
Block 14, the rectangular opening 15 that wedge-shaped fixture block can be issued by cavity wall is filled in cavity, and cavity inner wall is provided with and wedge-shaped fixture block
The chute of matching, wedge-shaped fixture block is located in chute, and screw mandrel 16 is provided between wedge-shaped fixture block and chamber outer wall, and chamber outer wall is provided with spiral shell
Keyhole, one end of screw mandrel passes through bolt hole, is acted on by the feeding of screw mandrel and bolt hole so that screw mandrel lower end and wedge-shaped fixture block
Upper surface pretension reinforcing, forces wedge-shaped fixture block to be moved down along chute, so as to improve clamping face and the tubular product sample stretching of wedge-shaped fixture block
The normal pressure and clamping force on surface, realize the locking of tubular product sample.Scale line is carved with the outer surface of wedge-shaped fixture block, passes through scale
Line weighs the size that fixture clamps sample dynamics, it is to avoid because chucking power is much or too small, cross the rupture of ambassador's sample end face, experiment
During draw slit tubing, too small chucking power not enough, tubing comes off from fixture in drawing process, causes test crash.It is preferred that wedge
Clevis block is three, and corresponding screw mandrel is three, and the clamping face 17 of wedge-shaped fixture block is dentalation, reduce wedge-shaped fixture block with
The contact area of specimen surface, improves the normal pressure of clamping, solves the hypodynamic problem of clamp.The material of fixture is
High temperature resistant material, preferably molybdenum-lanthanum alloy or tungsten-molybdenum alloy so that there is certain hardness and tension in itself in 1200 DEG C of lower clamps
Intensity, improves the service life of fixture.When being detected to tubular product sample, inserted using this fixture, and at the two ends of tubing
Enter stopper rod 18, stopper rod and tubular product sample gap coordinate, and size is 1-5, and the bare terminal end of fixture is coated with high-temperature lubricant, such as two
Molybdenum sulfide breast or aquadag, are easy to follow-up dismounting and assemble again.
Above-described embodiment simply to illustrate technical concepts and features of the present utility model, can not limit this practicality new with this
The protection domain of type, every equivalent change or modification made according to essence of the present utility model should all cover new in this practicality
Within the protection domain of type.
Claims (3)
1. the tensile testing device of a kind of molybdenum and molybdenum alloy tubing, including universal testing machine, are arranged on universal testing machine upper, lower horizontal
High temperature furnace between beam, it is characterised in that the tensile testing device also includes two structure identical upper fixtures and lower clamp；
The upper fixture is fixed on the entablature of universal testing machine, and the lower clamp is fixed on the sill of universal testing machine, institute
The bare terminal end for stating two fixtures is stretched into high temperature furnace and is oppositely arranged；The bare terminal end of two fixture is to have cone
The cavity of cavity, circular mounting hole is provided with the cavity end, and the circular mounting hole is communicated with conical cavity, the circle
Provided with multiple vertical wedge-shaped fixture blocks in conical cavity, the cavity inner wall is provided with the chute matched with wedge-shaped fixture block, the wedge
Clevis block is located in chute, and screw mandrel is provided between the wedge-shaped fixture block and chamber outer wall.
2. equipment according to claim 1, it is characterised in that the clamping face of the wedge-shaped fixture block is dentalation.
3. equipment according to claim 1, it is characterised in that the material of two fixture is that molybdenum-lanthanum alloy or tungsten are closed
Gold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621331620.4U CN206362621U (en) | 2016-12-07 | 2016-12-07 | A kind of tensile testing device of molybdenum and molybdenum alloy tubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621331620.4U CN206362621U (en) | 2016-12-07 | 2016-12-07 | A kind of tensile testing device of molybdenum and molybdenum alloy tubing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206362621U true CN206362621U (en) | 2017-07-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621331620.4U Active CN206362621U (en) | 2016-12-07 | 2016-12-07 | A kind of tensile testing device of molybdenum and molybdenum alloy tubing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206362621U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168966A (en) * | 2017-11-30 | 2018-06-15 | 金堆城钼业股份有限公司 | The producing device and production method of molybdenum and molybdenum alloy tubing tensile test specimen scale distance line |
| CN111398053A (en) * | 2020-04-17 | 2020-07-10 | 中国航发北京航空材料研究院 | High-temperature test device with wedge-shaped sample self-centering and multi-degree-of-freedom adjustable |
-
2016
- 2016-12-07 CN CN201621331620.4U patent/CN206362621U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168966A (en) * | 2017-11-30 | 2018-06-15 | 金堆城钼业股份有限公司 | The producing device and production method of molybdenum and molybdenum alloy tubing tensile test specimen scale distance line |
| CN108168966B (en) * | 2017-11-30 | 2020-07-21 | 金堆城钼业股份有限公司 | Device and method for manufacturing molybdenum and molybdenum alloy pipe tensile sample gauge length line |
| CN111398053A (en) * | 2020-04-17 | 2020-07-10 | 中国航发北京航空材料研究院 | High-temperature test device with wedge-shaped sample self-centering and multi-degree-of-freedom adjustable |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190528 Address after: 710077 88 Jinye Road, Xi'an high tech Industrial Development Zone, Shaanxi Co-patentee after: CHINA NUCLEAR POWER TECHNOLOGY RESEARCH INSTITUTE Patentee after: Jinduicheng Molybdenum Industry Co., Ltd. Address before: 710077 88 Jinye Road, Xi'an high tech Industrial Development Zone, Shaanxi Patentee before: Jinduicheng Molybdenum Industry Co., Ltd. |
|
| TR01 | Transfer of patent right |