CN102721611B - High temperature resistant spring-type device for measuring metallic material deformation - Google Patents
High temperature resistant spring-type device for measuring metallic material deformation Download PDFInfo
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- CN102721611B CN102721611B CN201110076631.8A CN201110076631A CN102721611B CN 102721611 B CN102721611 B CN 102721611B CN 201110076631 A CN201110076631 A CN 201110076631A CN 102721611 B CN102721611 B CN 102721611B
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Abstract
The invention relates to a high temperature resistant spring-type device for measuring metallic material deformation, which comprises high temperature resistant springs, an upper clamp splice, a lower clamp splice, extension rods, deformation sensors, and a high temperature furnace. The upper clamp splice and the lower clamp splice are both arranged in the high temperature furnace, and end portions thereof are provided with the high temperature resistant springs and are fixedly provided with the extension rods. Due to compacting forces of the high temperature resistant springs, in the process of the sample being extended longer and thinner by high temperature, edges of the upper clamp splice and the lower clamp splice are driven to move inwardly with even, and the sample is always clamped firmly. The lower ends of the extension rods extend from a lower opening of the high temperature furnace, and are connected with the deformation sensors at two symmetrical sides of the sample, such that a two-side measuring system is formed for measuring a deformation value of the sample. Compared with the prior art, the device, simple in structure and convenient in installation, can both measure the deformation values within a gauge length of common and special non-boss metallic material samples in a high temperature extension test, wherein the common non-boss metallic materials are wire materials, bar materials, tube materials, etc., while the special non-boss metallic materials are multi-ply type such as steel wire cables, etc.
Description
Technical field
The present invention relates to Metal Materials At High Temperature stretching mechanical property testing field, is a kind of while carrying out high temperature tension test for wire rod, bar, tubing, steel tendon etc. without boss metal materials sample, measures the technique device of its gauge length internal strain amount.
Background technology
At present, when carrying out high temperature tension test without boss metal materials sample (as wire rod, bar, tubing etc.), adopt when method is measured gauge length internal strain comparatively accurately both at home and abroad, device used mostly is side-plug-in extensometer.This kind of extensometer can only be realized the monolateral measurement to sample deformation, makes the sample deformation measurement machine malalignment that is put to the test cause the eccentric impact of load larger, and measuring accuracy is not high enough; Its range is limited, and gauge length is below 50mm; Owing to mostly being imported product, expensive.In addition, this extensometer is mainly applicable to single sample, for looking like the special in boss metal materials sample of the Multi-strands such as steel strand wires and steel tendon, only can measure the high temperature deformation amount of outer wires, and can not measure the deflection of sample entirety, is therefore difficult to be suitable for.
Summary of the invention
Object of the present invention be exactly provide in order to overcome the deficiency that above-mentioned prior art exists a kind of simple in structure, cost is low, applied widely, the high-temperature resistance spring type metal material deformation measuring device that can realize bilateral measurement.
Object of the present invention can be achieved through the following technical solutions: a kind of high-temperature resistance spring type metal material deformation measuring device, comprises high temperature resistant spring, upper fixture block, lower fixture block, the bar of extending, deformation-sensor, high temperature furnace.Described high temperature resistant spring can normally effectively be worked in 0～600 DEG C of temperature range.Described upper fixture block and lower fixture block, all be placed in high temperature furnace, described upper fixture block comprises two edges of a knife that clamp the relative both sides of sample, and connect together by two parallel bars, one end of bar all connects high temperature resistant spring, the snap-in force of high temperature resistant spring makes that two edges of a knife are elongated at sample drawing by high temperature, enter the upper gauge length end of firm grip sample all the time in the process that attenuates in evenly.
Same principle, described lower fixture block comprises two edges of a knife that clamp the relative both sides of sample, and connect together by two parallel bars, one end of bar all connects high temperature resistant spring, the snap-in force of high temperature resistant spring makes that two edges of a knife are elongated at sample drawing by high temperature, enter the lower gauge length end of firm grip sample all the time in the process that attenuates in evenly.
The described bar of extending is by high temperature alloy steel, have four, the symmetrical end of upper fixture block is fixed two, and the symmetrical end of lower fixture block is fixed two, and four bar lower ends of extending are arranged on orienting lug, guarantee extend the axis of bar and the axis of sample parallel, and at the identical deformation-sensor of the each connection in the symmetrical both sides of sample, be differential transformer displace￣ ment transducer, form bilateral measuring system, to measure the relative shift between upper and lower fixture block, draw sample high temperature deformation value.
The beneficial effect of apparatus of the present invention is: compared with prior art, apparatus of the present invention are simple in structure, easy for installation, not only can solve as wire rod (as steel wire), bar, the ordinary metallic material samples such as tubing, can also solve the deformation measurement problem while carrying out high temperature tension test as particulate metal material sample of this Multi-strand of steel tendon, the applicable temperature range of this device is 0～600 DEG C, can measure sample from elastic deformation till the overall process deflection of fracture, and can realize bilateral measurement, avoid the impact of the eccentric tension that monolateral measurement brings, improve measuring accuracy, and expense is cheaply more a lot of than the monolateral extensometer of the side-plug-in of import.Apparatus of the present invention are complete has tested simple root metal material sample if steel wire and special type Multi-strand metal material sample are as the each relevant mechanical property of steel tendon under drawing by high temperature.
Brief description of the drawings
Fig. 1 is the structural representation in apparatus of the present invention longitudinal profile;
Fig. 2 is the A-A sectional view of Fig. 1.
In figure: 1-metal material sample, the upper fixture block of 2-, 3-bar a, 4-bar b, 5-is high temperature resistant spring a, 6-is high temperature resistant spring b, fixture block under 7-, 8-bar c, 9-bar d, 10-is high temperature resistant spring c, 11-is high temperature resistant spring d, the 12-bar a that extends, the 13-bar b that extends, the 14-bar c that extends, the 15-bar d that extends, 16-high temperature furnace, 17-orienting lug, 18-differential transformer displace￣ ment transducer a, 19-differential transformer displace￣ ment transducer b.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
As shown in Fig. 1～2, a kind of high-temperature resistance spring type metal material deformation measuring device, comprises metal material sample 1, upper fixture block 2, bar a3, bar b4, high temperature resistant spring a5, high temperature resistant spring b6, lower fixture block 7, bar c8, bar d9, high temperature resistant spring c10, high temperature resistant spring d11, the bar a12 that extends, bar b13 extends, the bar c14 that extends, the bar d15 that extends, high temperature furnace 16, orienting lug 17, differential transformer displace￣ ment transducer a18, differential transformer displace￣ ment transducer b19.
First lower chuck on metal material sample 1 use cupping machine is clamped, then according to the sample marking distance of reserving, two edges of a knife of upper fixture block 2 are fixed to the upper gauge length end of sample, two knife edge general purposes cross two parallel bar a3 and bar b4 links together, bar a3 one end connects high temperature resistant spring a5, bar b4 one end connects high temperature resistant spring b6, the snap-in force of high temperature resistant spring makes that two edges of a knife are elongated at sample drawing by high temperature, enter in evenly in the process that attenuates, all the time the upper gauge length end of firm grip sample, prevents that the edge of a knife from skidding or coming off in test drawing process.
Same method, two edges of a knife of lower fixture block 7 are fixed to the lower gauge length end of sample, two knife edge general purposes cross two parallel bar c8 and bar d9 links together, bar c8 one end connects high temperature resistant spring c10, bar d9 one end connects high temperature resistant spring d11, the snap-in force of high temperature resistant spring makes that two edges of a knife are elongated at sample drawing by high temperature, enter in evenly in the process that attenuates, and the upper gauge length end of firm grip sample all the time, prevents that the edge of a knife from skidding or coming off in test drawing process.
Two bars of extending are fixed in upper fixture block 2 ends: bar a12 and the bar c14 that extends extend, two bars of extending are fixed in lower fixture block 7 ends: bar b13 and the bar d15 that extends extend, stretch out from high temperature furnace 16 end openings four bar lower ends of extending, be arranged on orienting lug 17, and adjust straight, the bar a12 that extends is connected differential transformer displace￣ ment transducer a18 with the bar b13 lower end of extending, the bar c14 that extends is connected differential transformer displace￣ ment transducer b19 with the bar d15 lower end of extending, form bilateral measuring system in the both sides of sample symmetry like this, in high temperature tension test process, differential transformer displace￣ ment transducer a18 and differential transformer displace￣ ment transducer b19 can record respectively the relative displacement of sample between upper fixture block 2 and lower fixture block 7, high temperature deformation amount in using the mean value of two groups of data as sample marking distance section.
Described high temperature resistant spring can normally effectively be worked in 0～600 DEG C of temperature range.
Claims (2)
1. a high-temperature resistance spring type metal material deformation measuring device, it is characterized in that, comprise high temperature resistant spring, upper fixture block, lower fixture block, the bar of extending, deformation-sensor, high temperature furnace, described upper fixture block and lower fixture block are all placed in high temperature furnace, upper fixture block and lower fixture block end are equipped with high temperature resistant spring, and are fixed with the bar of extending; The snap-in force of described high temperature resistant spring makes that the edge of a knife of fixture block and lower fixture block is elongated at sample drawing by high temperature, enter in evenly in the process that attenuates, clamps securely all the time sample; Stretch out from high temperature furnace end opening the described bar lower end of extending, and connects deformation-sensor in the symmetrical both sides of sample, forms bilateral measuring system, to measure the deformation values of sample;
Described upper fixture block comprises two edges of a knife that clamp the relative both sides of sample, and connect together by two parallel bars, one end of bar connects high temperature resistant spring, the snap-in force of high temperature resistant spring makes that two edges of a knife are elongated at sample drawing by high temperature, enter the upper gauge length end of firm grip sample all the time in the process that attenuates in evenly;
Described lower fixture block comprises two edges of a knife that clamp the relative both sides of sample, and connect together by two parallel bars, one end of bar connects high temperature resistant spring, the snap-in force of high temperature resistant spring makes that two edges of a knife are elongated at sample drawing by high temperature, enter the lower gauge length end of firm grip sample all the time in the process that attenuates in evenly;
The described bar of extending has four, and two bars of extending are fixed in the symmetrical end of upper fixture block, and two bars of extending are fixed in the symmetrical end of lower fixture block, and four bar lower ends of extending are arranged on orienting lug, and ensure the to extend axis of bar and the axis of sample are parallel;
Described deformation-sensor is differential transformer displace￣ ment transducer, and totally two, symmetry is arranged on sample both sides, each deformation-sensor connects two bars of extending, form a bilateral measuring system, to measure the relative shift between upper and lower fixture block, draw sample high temperature deformation value.
2. a kind of high-temperature resistance spring type metal material deformation measuring device according to claim 1, is characterized in that, described high temperature resistant spring can normally effectively be worked in 0～600 DEG C of temperature range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110076631.8A CN102721611B (en) | 2011-03-29 | 2011-03-29 | High temperature resistant spring-type device for measuring metallic material deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110076631.8A CN102721611B (en) | 2011-03-29 | 2011-03-29 | High temperature resistant spring-type device for measuring metallic material deformation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102721611A CN102721611A (en) | 2012-10-10 |
| CN102721611B true CN102721611B (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110076631.8A Expired - Fee Related CN102721611B (en) | 2011-03-29 | 2011-03-29 | High temperature resistant spring-type device for measuring metallic material deformation |
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| CN103308395B (en) * | 2013-06-06 | 2016-02-17 | 北京大学 | Ultrahigh-temperaturoutward outward extension type deformation measurement device |
| CN104374361B (en) * | 2013-08-12 | 2017-06-09 | 中航试金石检测科技有限公司 | Plate creep extensometer |
| CN104374646B (en) * | 2013-08-12 | 2017-07-14 | 中航试金石检测科技有限公司 | Bar creep deformation extensometer |
| CN104460788B (en) * | 2014-11-18 | 2017-02-22 | 东华理工大学 | Constant temperature and constant humidity deformeter |
| CN105136102B (en) * | 2015-06-29 | 2017-10-31 | 浙江蓝宝石仪表科技有限公司 | The chamber of metal material deflection and its detection method |
| CN105277445A (en) * | 2015-11-19 | 2016-01-27 | 天津大学 | Compact tensile sample creep-fatigue crack propagation testing device |
| CN106153733B (en) * | 2016-08-29 | 2023-09-22 | 上海交通大学 | Sample clamping device for measuring natural frequency at high temperature and application method thereof |
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| CN108007773A (en) * | 2017-10-31 | 2018-05-08 | 合肥通用机械研究院 | A kind of sample deformation measuring system for extreme environment |
| CN109012495B (en) * | 2018-09-20 | 2024-03-15 | 西安力创材料检测技术有限公司 | Device for dynamically monitoring deformation index under high-temperature and high-pressure condition in reaction kettle |
| CN112067454B (en) * | 2019-06-10 | 2023-07-25 | 中国航发商用航空发动机有限责任公司 | Extensometer anti-slip device in high-temperature extensometer Gao Wenzhun static loading test |
| CN110631910B (en) * | 2019-09-27 | 2021-06-01 | 福州大学 | Fire test testing device and method for prestressed steel strand |
| CN112710559B (en) * | 2019-10-25 | 2022-06-24 | 中国航发商用航空发动机有限责任公司 | High-temperature mechanical test device and extensometer auxiliary assembly thereof |
| CN111854593B (en) * | 2020-06-22 | 2021-07-20 | 同济大学 | Digital sensor based on multistage deformation surmounts early warning |
| CN112945752A (en) * | 2021-02-05 | 2021-06-11 | 宁夏大学 | Device for testing high-temperature creep property of metal and testing method using device |
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| CN2816793Y (en) * | 2005-09-09 | 2006-09-13 | 上海新三思计量仪器制造有限公司 | Large-scale distance extensometer |
| CN101608988A (en) * | 2009-07-20 | 2009-12-23 | 江苏大学 | A kind of uni-directional stretching test clamp for warm shaping of metal plate |
| CN201555776U (en) * | 2009-10-16 | 2010-08-18 | 长春科新试验仪器有限公司 | Gauge length internal strain measuring device for thin-wall tube high-temperature tensile test |
| CN202141649U (en) * | 2011-03-29 | 2012-02-08 | 同济大学 | High-temperature resistance spring type metal material deformation measuring device |
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- 2011-03-29 CN CN201110076631.8A patent/CN102721611B/en not_active Expired - Fee Related
Patent Citations (4)
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|---|---|---|---|---|
| CN2816793Y (en) * | 2005-09-09 | 2006-09-13 | 上海新三思计量仪器制造有限公司 | Large-scale distance extensometer |
| CN101608988A (en) * | 2009-07-20 | 2009-12-23 | 江苏大学 | A kind of uni-directional stretching test clamp for warm shaping of metal plate |
| CN201555776U (en) * | 2009-10-16 | 2010-08-18 | 长春科新试验仪器有限公司 | Gauge length internal strain measuring device for thin-wall tube high-temperature tensile test |
| CN202141649U (en) * | 2011-03-29 | 2012-02-08 | 同济大学 | High-temperature resistance spring type metal material deformation measuring device |
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| CN102721611A (en) | 2012-10-10 |
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