CN102721607A - A deformation measuring device for a boss-free metal material high-temperature tensile test - Google Patents
A deformation measuring device for a boss-free metal material high-temperature tensile test Download PDFInfo
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- CN102721607A CN102721607A CN2011100766727A CN201110076672A CN102721607A CN 102721607 A CN102721607 A CN 102721607A CN 2011100766727 A CN2011100766727 A CN 2011100766727A CN 201110076672 A CN201110076672 A CN 201110076672A CN 102721607 A CN102721607 A CN 102721607A
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Abstract
The invention relates to a deformation measuring device for a boss-free metal material high-temperature tensile test, comprising a spring, an upper scissor type device, a lower scissor type device, an upper clamp, a lower clamp, extension rods, deformation sensors, and a high-temperature furnace, wherein both the upper clamp and the lower clamp are arranged in the high-temperature furnace, the upper part of the upper clamp is provided with the upper scissor type device while the lower part of the upper clamp is fixed to the extension rods, and the upper part of the lower clamp is provided with the low scissor type device while the lower part of the lower clamp is fixed to the extension rods; the top ends of both the upper scissor type device and the lower scissor type device are connected with the spring and reaches out of the upper opening of the high-temperature furnace, making sure the upper clamp and the lower clamp firmly clamp a sample with force applied by the spring; the lower ends of the extension rods reaches out reach out of the lower opening of the high-temperature furnace and respectively connects with the two deformation sensors on the two symmetrical sides of the sample, thereby forming a two-side measuring system to measure the deformation value of the sample. Compared with the prior art, the device can measure the deformation value within a gauge length during the high-temperature tensile test of not only an ordinary boss-free metal material sample such as wires, bars, and pipes, and the like, but also a multi-strand special boss-free metal material sample such as steel tendons and the like.
Description
Technical field
The present invention relates to metal material drawing by high temperature Mechanics Performance Testing field, is a kind of when carrying out high temperature tension test to no boss metal material samples such as wire rods, bar, tubing, steel tendon, measures the technique device of its gauge length internal strain amount.
Background technology
At present, both at home and abroad no boss metal material sample (like wire rod, bar, tubing etc.) when carrying out high temperature tension test, is adopted when method is measured the gauge length internal strain comparatively accurately, mostly used device is the side-plug-in extensometer.This kind 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 influence of load bigger, and measurement of factor is high; Its range is limited, and gauge length is below the 50mm; Owing to be mostly to cost an arm and a leg imported product.In addition, this extensometer mainly is applicable to single sample, for the special no boss metal material sample of multiply formulas such as picture steel strand wires and steel tendon, only can measure the high temperature deformation amount of outer wires, and the whole deflection of energy measurement sample not, so be difficult to be suitable for.
Summary of the invention
The objective of the invention is a kind of applied range to be provided, can realize bilateral measurement, be applicable to the deformation measuring device that no boss metal material high temperature tension test is used for the deficiency that overcomes above-mentioned prior art existence.
Technical scheme of the present invention is:
A kind of no boss metal material high temperature tension test is used deformation measuring device, it is characterized in that, comprises spring, last scissor arrangement; Following scissor arrangement, last anchor clamps, lower clamp, the bar of extending; Deformation-sensor, high temperature furnace, described upward anchor clamps, lower clamp all place high temperature furnace, and last anchor clamps top is provided with scissor arrangement; The bottom bar of fixedly extending, lower clamp top is provided with down scissor arrangement, the bottom bar of fixedly extending; Described upward scissor arrangement, following scissor arrangement top all connect with spring; And it is suitable for reading to stretch out high temperature furnace, through spring-loaded, makes anchor clamps, lower clamp clamping sample securely; Stretch out from the high temperature furnace end opening the described bar lower end of extending; Connect deformation-sensor in sample symmetry both sides, form bilateral measuring system, to measure the deformation values of sample.
Described upward anchor clamps comprise two clamping plate on the relative both sides of clamping sample, and two clamping plate one ends are fixed together, and the other end connects scissor arrangement respectively.
The described scissor arrangement that goes up comprises two scissor hinged pull bars; Two pull bar one ends are connected in anchor clamps; The other end interconnects through spring, and two clamping plate that the elastic force of spring makes anchor clamps advance in evenly in sample stretches elongated, the process that attenuates, all the time the firm grip sample.
Described lower clamp comprises two clamping plate on the relative both sides of clamping sample, and two clamping plate one ends are fixed together, and the other end connects scissor arrangement down respectively.
Described scissor arrangement down comprises two scissor hinged pull bars; Two pull bar one ends are connected in lower clamp; The other end interconnects through spring, and two clamping plate that the elastic force of spring makes lower clamp advance in evenly in sample stretches elongated, the process that attenuates, all the time the firm grip sample.
The described bar of extending comprises four, fixing two of last anchor clamps bottom, and fixing two of lower clamp bottom, four bar lower ends of extending are arranged on the orienting lug, the parallel axes of the axis and the sample of the bar that guarantees to extend.
Described deformation-sensor is a differential transformer displace, and totally two, symmetry is installed in the sample both sides; Each deformation-sensor connects two bars of extending; Form a bilateral measuring system,, draw sample high temperature deformation value to measure the relative shift between anchor clamps and lower clamp.
The beneficial effect of apparatus of the present invention is: compared with prior art; Apparatus of the present invention not only can solve as common no boss metal material samples such as wire rod (like steel wire), bar, tubing; Deformation measurement problem in the time of can also solving special no boss metal material sample as this multiply formula of steel tendon and carry out high temperature tension test, the temperature range that this device is suitable for is 0～1000 ℃, can measure the overall process deflection of sample till from elastic deformation to fracture; Can realize bilateral measurement; Avoided the influence of the eccentric tension that monolateral measurement brought, improved measuring accuracy, and expense is cheaply more a lot of than the monolateral extensometer of the side-plug-in of import.Complete simple root metal material sample such as the steel wire and special type multiply formula metal material sample such as the relevant mechanical property of steel tendon each under drawing by high temperature tested of apparatus of the present invention.
Description of drawings
Fig. 1 is the structural representation in apparatus of the present invention longitudinal profile;
Fig. 2 is the structural representation in apparatus of the present invention other direction longitudinal profile;
Fig. 3 is the planar structure synoptic diagram of apparatus of the present invention;
Among the figure: 1-metal material sample, 2-spring, the last scissor arrangement of 3-, scissor arrangement under the 4-; The last anchor clamps of 5-, 6-lower clamp, the 7-bar a that extends, the 8-bar b that extends; The 9-bar c that extends, the 10-bar d that extends, the 11-high temperature furnace; The 12-orienting lug, 13-differential transformer displace a, 14-differential transformer displace b.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is elaborated.
Embodiment 1
Shown in Fig. 1～3, a kind of no boss metal material high temperature tension test is used deformation measuring device, comprises spring 2, last scissor arrangement 3; Following scissor arrangement 4, last anchor clamps 5, lower clamp 6, bar a7 extends; The bar b8 that extends, the bar c9 that extends, the bar d10 that extends, high temperature furnace 11; Orienting lug 12, differential transformer displace a13, differential transformer displace b14.
During use; Earlier lower chuck on the metal material sample 1 usefulness cupping machine is clamped; Two clamping plate to going up anchor clamps 5 according to the sample marking distance of reserving then are fixed to the last gauge length end of sample, and two clamping plate one ends are fixed together, and the other end connects scissor arrangement 3 respectively; It is suitable for reading that high temperature furnace 11 is stretched out on the top of two scissor hinged pull bars of last scissor arrangement 3; And interconnect through spring 2, the elastic force of spring makes that two clamping plate are elongated at sample, advance in evenly in the process that attenuates, all the time the firm grip sample.
In like manner; Two clamping plate of lower clamp 6 are fixed to the following gauge length end of sample, and two clamping plate one ends are fixed together, and the other end connects scissor arrangement 4 down respectively; It is suitable for reading that high temperature furnace 11 is stretched out on the top of two scissor hinged pull bars of following scissor arrangement 4; And connect through spring 2, spring force makes that two clamping plate are elongated at sample, advance in evenly in the process that attenuates, all the time the firm grip sample.
Claims (7)
1. a no boss metal material high temperature tension test is used deformation measuring device, it is characterized in that, comprises spring, last scissor arrangement; Following scissor arrangement, last anchor clamps, lower clamp, the bar of extending; Deformation-sensor, high temperature furnace, described upward anchor clamps, lower clamp all place high temperature furnace, and last anchor clamps top is provided with scissor arrangement; The bottom bar of fixedly extending, lower clamp top is provided with down scissor arrangement, the bottom bar of fixedly extending; Described upward scissor arrangement, following scissor arrangement top all connect with spring; And it is suitable for reading to stretch out high temperature furnace, through spring-loaded, makes anchor clamps, lower clamp clamping sample securely; Stretch out from the high temperature furnace end opening the described bar lower end of extending; Connect deformation-sensor in sample symmetry both sides, form bilateral measuring system, to measure the deformation values of sample.
2. a kind of no boss metal material high temperature tension test according to claim 1 is used deformation measuring device; It is characterized in that; Described upward anchor clamps comprise two clamping plate on the relative both sides of clamping sample, and two clamping plate one ends are fixed together, and the other end connects scissor arrangement respectively.
3. a kind of no boss metal material high temperature tension test according to claim 1 and 2 is used deformation measuring device; It is characterized in that; The described scissor arrangement that goes up comprises two scissor hinged pull bars, and two pull bar one ends are connected in anchor clamps, and the other end interconnects through spring; Two clamping plate that the elastic force of spring makes anchor clamps advance in evenly in sample stretches elongated, the process that attenuates, all the time the firm grip sample.
4. a kind of no boss metal material high temperature tension test according to claim 1 is used deformation measuring device; It is characterized in that; Described lower clamp comprises two clamping plate on the relative both sides of clamping sample, and two clamping plate one ends are fixed together, and the other end connects scissor arrangement down respectively.
5. use deformation measuring device according to claim 1 or 4 described a kind of no boss metal material high temperature tension tests; It is characterized in that; Described scissor arrangement down comprises two scissor hinged pull bars, and two pull bar one ends are connected in lower clamp, and the other end interconnects through spring; Two clamping plate that the elastic force of spring makes lower clamp advance in evenly in sample stretches elongated, the process that attenuates, all the time the firm grip sample.
6. a kind of no boss metal material high temperature tension test according to claim 1 is used deformation measuring device; It is characterized in that; The described bar of extending comprises four, fixing two of last anchor clamps bottom, fixing two of lower clamp bottom; Four bar lower ends of extending are arranged on the orienting lug, the parallel axes of the axis and the sample of the bar that guarantees to extend.
7. a kind of no boss metal material high temperature tension test according to claim 1 is used deformation measuring device, it is characterized in that described deformation-sensor is a differential transformer displace; Totally two; Symmetry is installed in the sample both sides, and each deformation-sensor connects two bars of extending, and forms a bilateral measuring system; To measure the relative shift between anchor clamps and lower clamp, draw sample high temperature deformation value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110076672.7A CN102721607B (en) | 2011-03-29 | 2011-03-29 | A deformation measuring device for a boss-free metal material high-temperature tensile test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110076672.7A CN102721607B (en) | 2011-03-29 | 2011-03-29 | A deformation measuring device for a boss-free metal material high-temperature tensile test |
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| CN102721607A true CN102721607A (en) | 2012-10-10 |
| CN102721607B CN102721607B (en) | 2014-11-19 |
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| CN201110076672.7A Expired - Fee Related CN102721607B (en) | 2011-03-29 | 2011-03-29 | A deformation measuring device for a boss-free metal material high-temperature tensile test |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103542894A (en) * | 2013-11-12 | 2014-01-29 | 哈尔滨工业大学 | Method for measuring stress and strain of steel bar under high temperature and variable loading rates |
| CN103557784A (en) * | 2013-11-07 | 2014-02-05 | 中国科学院金属研究所 | Normal position real-time monitoring system for high-temperature and high-pressure water fatigue testing specimen scale distance section strain |
| CN104374361A (en) * | 2013-08-12 | 2015-02-25 | 中航试金石检测科技有限公司 | Plate creep extensometer |
| CN104748665A (en) * | 2015-03-17 | 2015-07-01 | 西安交通大学 | Sensor for measuring material strain under high temperature environment |
| CN105136102A (en) * | 2015-06-29 | 2015-12-09 | 浙江蓝宝石仪表科技有限公司 | Metal material deformation amount test box and detection method thereof |
| CN106168472A (en) * | 2016-08-26 | 2016-11-30 | 中国科学院武汉岩土力学研究所 | A kind of cuboid sample lateral displacement measurement apparatus |
| 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 |
| CN107389444A (en) * | 2017-09-19 | 2017-11-24 | 中国核动力研究设计院 | A kind of ceramic high temperature bend test chucking appliance system of measurable deformation |
| CN109855963A (en) * | 2018-12-27 | 2019-06-07 | 华东理工大学 | A kind of tensile shear combination ductile fracture experimental system and experimental method |
| CN111854593A (en) * | 2020-06-22 | 2020-10-30 | 同济大学 | Digital sensor based on multistage deformation surmounts early warning |
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| CN202057290U (en) * | 2011-03-29 | 2011-11-30 | 同济大学 | Deformation measuring device used for high-temperature tensile test of no-boss metal materials |
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2011
- 2011-03-29 CN CN201110076672.7A patent/CN102721607B/en not_active Expired - Fee Related
Patent Citations (4)
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| CN87206841U (en) * | 1987-04-20 | 1988-06-08 | 工程兵工程学院 | Friction type clamp for pure tensile test of concrete |
| 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 |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104374361A (en) * | 2013-08-12 | 2015-02-25 | 中航试金石检测科技有限公司 | Plate creep extensometer |
| CN104374361B (en) * | 2013-08-12 | 2017-06-09 | 中航试金石检测科技有限公司 | Plate creep extensometer |
| CN103557784A (en) * | 2013-11-07 | 2014-02-05 | 中国科学院金属研究所 | Normal position real-time monitoring system for high-temperature and high-pressure water fatigue testing specimen scale distance section strain |
| CN103542894A (en) * | 2013-11-12 | 2014-01-29 | 哈尔滨工业大学 | Method for measuring stress and strain of steel bar under high temperature and variable loading rates |
| CN103542894B (en) * | 2013-11-12 | 2016-01-20 | 哈尔滨工业大学 | Reinforcement stresses, strain measurement method under high temperature change loading speed |
| CN104748665A (en) * | 2015-03-17 | 2015-07-01 | 西安交通大学 | Sensor for measuring material strain under high temperature environment |
| CN104748665B (en) * | 2015-03-17 | 2017-10-20 | 西安交通大学 | The sensor of material strain under a kind of measurement hot environment |
| CN105136102A (en) * | 2015-06-29 | 2015-12-09 | 浙江蓝宝石仪表科技有限公司 | Metal material deformation amount test box and detection method thereof |
| 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 |
| CN106168472A (en) * | 2016-08-26 | 2016-11-30 | 中国科学院武汉岩土力学研究所 | A kind of cuboid sample lateral displacement measurement apparatus |
| CN106168472B (en) * | 2016-08-26 | 2020-02-14 | 中国科学院武汉岩土力学研究所 | Cuboid sample lateral displacement measuring device |
| CN107389444A (en) * | 2017-09-19 | 2017-11-24 | 中国核动力研究设计院 | A kind of ceramic high temperature bend test chucking appliance system of measurable deformation |
| CN109855963A (en) * | 2018-12-27 | 2019-06-07 | 华东理工大学 | A kind of tensile shear combination ductile fracture experimental system and experimental method |
| CN109855963B (en) * | 2018-12-27 | 2021-12-24 | 华东理工大学 | Tensile-shear combined ductile fracture experiment system and method |
| CN111854593A (en) * | 2020-06-22 | 2020-10-30 | 同济大学 | Digital sensor based on multistage deformation surmounts early warning |
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| CN102721607B (en) | 2014-11-19 |
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