CN204142573U - A kind of jig of low-intensity high fragility sample high temperature tensile properties test - Google Patents
A kind of jig of low-intensity high fragility sample high temperature tensile properties test Download PDFInfo
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- CN204142573U CN204142573U CN201420653727.5U CN201420653727U CN204142573U CN 204142573 U CN204142573 U CN 204142573U CN 201420653727 U CN201420653727 U CN 201420653727U CN 204142573 U CN204142573 U CN 204142573U
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Abstract
The utility model discloses the jig of a kind of low-intensity high fragility sample high temperature tensile properties test, comprise upper grip and lower chuck, described upper grip is the same with lower chuck contour structures, is right cylinder, described cylindrical one end is the end that stretches, and is provided with threaded hole in its end; The described cylindrical other end is bare terminal end, and the side opening of bare terminal end is provided with sample groove, and the structure of described sample groove is consistent with the bare terminal end contour structures of tested sample; The inner side of described upper grip sample groove offers thermocouple groove, and described thermocouple groove is the cylindrical groove running through sample cell wall.The utility model, because institute's test specimens is when filling sample, the upper and lower dop that sample can utilize the shape of its end (retaining part) to be directly stuck in described stretching clamp should not comes off, realizes the test to sample high temperature tensile properties.Fixture structure is simple, convenient and practical, can meet the testing requirements of low-intensity, high fragility sample high temperature tensile properties index test.
Description
Technical field
The utility model relates to a kind of in the high temperature furnace of Material Testing Machine, low-intensity, brittle materials sample are carried out to the clamping jig of high temperature tensile properties test.
Background technology
In research and production and engineer applied, for meeting different user demands, the application of low-intensity, brittle materials is very general.As the lithium hydride class material of low-intensity, high fragility, owing to having the characteristics such as low-density, high radiation effects and thermal stability, the occasion such as catalyzer of protective materials, lightweight neutron moderator, nuclear reactor coolant, drying agent, fuel and various organic reactions and polymerization can be used as.But such strength of materials and plasticity low, have fragility, the very easily moisture absorption, thermal shock resistance is poor, the factor such as physical dimension of this material parts itself, makes its goods in process of manufacture in addition, easily produces the quality problems as defects such as underbead cracks.Obtain the mechanical behavior under high temperature index of such material, be not only the important evidence proving this material product application reliability, and can be obtain its rational production technology important parameter is provided.
Carrying out in the work of high temperature tensile properties test to low-intensity, brittle materials sample, because the strength of materials is low and have fragility, small size sample is difficult to processing, and narrow space in the high temperature furnace of Material Testing Machine, large-size sample and jig all cannot be installed.In addition for ensureing the accuracy of probe temperature, require that temperature thermocouple should contact sample, this also increases the requirement to specimen clamping further, causes using the clamping that conventional metal material high temperature tension test jig cannot realize low-intensity, brittle materials sample.Need to obtain a kind of clamping jig being applicable to low-intensity, the test of brittle materials high temperature tensile properties for this reason, solve the weak point existing for prior art.
Utility model content
The purpose of this utility model, is exactly for the deficiency existing for prior art, and provides a kind of in the high temperature furnace of Material Testing Machine, can carry out the technical scheme of high temperature tensile properties test to low-intensity, brittle materials sample.
This programme is achieved by the following technical measures:
A jig for low-intensity high fragility sample high temperature tensile properties test, comprise upper grip and lower chuck, described upper grip is the same with lower chuck contour structures, is right cylinder, and described cylindrical one end is the end that stretches, and is provided with threaded hole in its end; The described cylindrical other end is bare terminal end, and the side opening of bare terminal end is provided with sample groove, and the structure of described sample groove is consistent with the bare terminal end contour structures of tested sample; The inner side of described upper grip sample groove offers thermocouple groove, and described thermocouple groove is the cylindrical groove running through sample cell wall, and this structure can prevent thermopair in the test of dress sample from deviating from from galvanic couple groove.
In technique scheme, described sample groove is funnel shaped.
In technique scheme, the funnel inlet of described funnel shaped sample groove is towards the stretching end of chuck.
In technique scheme, in described funnel shaped sample groove, bell mouth and junction, bell mouth bottom are provided with cambered surface.
In technique scheme, the radian of described cambered surface is identical with the radian of tested sample corresponding position.
Compared with conventional brace, the beneficial effects of the utility model are: this programme is because institute's test specimens is when filling sample, on the upper and lower dop that sample can utilize the shape of its end (retaining part) to be directly stuck in described stretching clamp and difficult drop-off, realize the test to sample high temperature tensile properties.Simultaneously for easily causing sample fracture when preventing processing and install sample, this structure can make sample have processing dimension large as far as possible.The technical scheme structure of described stretching clamp is simple, convenient and practical, can meet the testing requirements to low-intensity, high fragility sample high temperature tensile properties index test.
Accompanying drawing explanation
Fig. 1 is structure application schematic diagram of the present utility model;
Fig. 2 is the structural representation of upper grip in the utility model;
Fig. 3 is that a left side of Fig. 2 is depending on cuing open figure;
Wherein: 1 is upper grip, 2 is thermocouple groove, and 3 is tested sample, and 4 is lower chucks, and 5 is threaded holes, and 6 is sample grooves.
Embodiment
As shown in Figure 1, the utility model is the jig for low-intensity, the test of brittle materials sample high temperature tensile properties, comprises upper grip and lower chuck.The upper grip of described jig shown in Fig. 2, profile is right cylinder, cylindrical member at one end is processed with the screw cooperatively interacted with Material Testing Machine upper connecting rod, a side of the other end is processed with the sample groove identical with institute test specimens bare terminal end profile, sample groove comprises conical and cylindrical two parts, forms funnel shaped; Be processed with in sample groove side the thermocouple groove can placing thermopair, and thermocouple groove runs through upper chuck periphery (as shown in Figure 3).The lower chuck of described jig is the same with the contour structures of upper grip, does not uniquely arrange thermocouple groove unlike in the sample groove in lower chuck.
On the upper connecting rod that during use, the screw hole parts of upper grip and lower chuck is screwed in Material Testing Machine respectively by its screw thread and lower link, be arranged on testing machine pull bar according to specimen size adjustment, the relative position of upper and lower two chucks, tested sample is directly loaded in the sample groove of described upper and lower stretching dop, thermopair is inserted the thermocouple groove of upper stretching dop, and thermopair and circular sample columnar part (test position) are contacted with each other.Then the pull bar and upper and lower jig that install sample are put into the sealing of vacuum sample room, and sample chamber is inserted drawing by high temperature stove, by upper and lower pull bar by pin respectively tensioning chuck upper and lower with Material Testing Machine be connected, vacuumize and after heating up and being incubated, the high temperature tensile properties test of light material sample can be carried out.
All features disclosed in this instructions, except mutually exclusive feature, all can combine by any way.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. the jig of a low-intensity high fragility sample high temperature tensile properties test, comprise upper grip and lower chuck, it is characterized in that: described upper grip is the same with lower chuck contour structures, is right cylinder, described cylindrical one end is the end that stretches, and is provided with threaded hole in its end; The described cylindrical other end is bare terminal end, and the side opening of bare terminal end is provided with sample groove, and the structure of described sample groove is consistent with the bare terminal end contour structures of tested sample; The inner side of described upper grip sample groove offers thermocouple groove, and described thermocouple groove is the cylindrical groove running through sample cell wall.
2. the jig of a kind of low-intensity high fragility sample high temperature tensile properties test according to claim 1, is characterized in that described sample groove is funnel shaped.
3. the jig of a kind of low-intensity high fragility sample high temperature tensile properties test according to claim 2, is characterized in that the stretching end of funnel inlet towards chuck of described funnel shaped sample groove.
4. the jig of a kind of low-intensity high fragility sample high temperature tensile properties test according to claim 2, is characterized in that, in described funnel shaped sample groove, bell mouth and junction, bell mouth bottom are provided with cambered surface.
5. the jig of a kind of low-intensity high fragility sample high temperature tensile properties test according to claim 4, is characterized in that the radian of described cambered surface is identical with the radian of tested sample corresponding position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420653727.5U CN204142573U (en) | 2014-11-05 | 2014-11-05 | A kind of jig of low-intensity high fragility sample high temperature tensile properties test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420653727.5U CN204142573U (en) | 2014-11-05 | 2014-11-05 | A kind of jig of low-intensity high fragility sample high temperature tensile properties test |
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| CN204142573U true CN204142573U (en) | 2015-02-04 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043857A (en) * | 2015-08-17 | 2015-11-11 | 西安热工研究院有限公司 | Inserted pin test sample clamp for reheating crack sensitivity test |
| CN105527157A (en) * | 2015-12-24 | 2016-04-27 | 北京航空航天大学 | Rapid-assembling and dissembling split clamp used for fatigue test |
| CN109374405A (en) * | 2018-11-12 | 2019-02-22 | 中国航发北京航空材料研究院 | A kind of ceramic fixture for the test of superhigh temperature creep tensile strength |
| CN109406265A (en) * | 2018-11-23 | 2019-03-01 | 中国汽车技术研究中心有限公司 | A kind of extension test clamping device of brittle materials |
| CN112504825A (en) * | 2020-11-11 | 2021-03-16 | 中国原子能科学研究院 | Test fixture capable of measuring temperature of test sample with fracture toughness |
-
2014
- 2014-11-05 CN CN201420653727.5U patent/CN204142573U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043857A (en) * | 2015-08-17 | 2015-11-11 | 西安热工研究院有限公司 | Inserted pin test sample clamp for reheating crack sensitivity test |
| CN105527157A (en) * | 2015-12-24 | 2016-04-27 | 北京航空航天大学 | Rapid-assembling and dissembling split clamp used for fatigue test |
| CN105527157B (en) * | 2015-12-24 | 2018-03-13 | 北京航空航天大学 | A kind of split type fixture of quick despatch for fatigue test |
| CN109374405A (en) * | 2018-11-12 | 2019-02-22 | 中国航发北京航空材料研究院 | A kind of ceramic fixture for the test of superhigh temperature creep tensile strength |
| CN109406265A (en) * | 2018-11-23 | 2019-03-01 | 中国汽车技术研究中心有限公司 | A kind of extension test clamping device of brittle materials |
| CN112504825A (en) * | 2020-11-11 | 2021-03-16 | 中国原子能科学研究院 | Test fixture capable of measuring temperature of test sample with fracture toughness |
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