CN202770717U - Strain control device for high-temperature tension test of foil strips - Google Patents
Strain control device for high-temperature tension test of foil strips Download PDFInfo
- Publication number
- CN202770717U CN202770717U CN 201220375655 CN201220375655U CN202770717U CN 202770717 U CN202770717 U CN 202770717U CN 201220375655 CN201220375655 CN 201220375655 CN 201220375655 U CN201220375655 U CN 201220375655U CN 202770717 U CN202770717 U CN 202770717U
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- extensometer
- temperature
- sample
- high temperature
- control device
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Abstract
The utility model discloses a strain control device for high-temperature tension test of foil strips. A high-temperature tension clamp is disposed at the inner top of a heating furnace. A strip tension sample is clamped below the high-temperature tension clamp. High-temperature-resistant ceramic arms at upper and lower ends of a plug extensometer are respectively perpendicularly connected with the strip tension sample through high-temperature tension ropes. Measuring distance of the plug extensometer is equal to gauge distance of the sample to be measured. The strain control device for high-temperature tension test of foil strips has the advantages that the gauge distance of the plug high-temperature extensometer is equal to that of the sample to be measured; physical real strain rate control is achieved, and standard requirements are met; and a high-temperature pull rod is omitted, inner effective space of the heating furnace is enlarged, clamping thermocouples and extensometers is simple and easy, and safety is evidently improved.
Description
Technical field
The utility model belongs to metal material Performance Detection technical field, relates to a kind of strain control device for foil material high temperature tension test.
Background technology
Generally speaking, there are following two kinds of situations in the laboratory when carrying out thinner thickness (less than 1mm) sheet metal strip sample high temperature tension test:
1) method that adopts high temperature pull bar and extensometer to cooperate is come the elongation of gauge length section in measuring unit's time, extensometer does not directly act on sample but outside heating furnace, rely on the distortion of the high temperature pull bar of clamping on sample to drive opening of the arm of extending, the extensometer displayed value only as the measurement of dependent variable, is surrendered section in the stress-strain diagram prompting.The control of rate of extension has been used in essence crosshead displacement to convert by experience by gauge length and time and has been obtained, because ignored the distortion on the outer specimen length of gauge length section, this method does not really realize the strain restrained stretching speed of the resilient deformation section of standard-required.
2) external part laboratory is when doing the band tension test, the method that has adopted equally high temperature pull bar and extensometer to be used in conjunction with, and its extensometer measured value directly feeds back to testing machine control software, has realized the requirement of stretch section strain rate control.But owing to having increased by a cover high temperature pull bar part, systematic error increases, process of the test complicated, loaded down with trivial details, and security performance reduces in the specimen clamping process.
The sheet metal strip sample higher for plasticity, that thickness is less, all there is uncertain factor in above two kinds of methods.To the first situation, the deflection of the rigid error of testing machine itself, sample inoperative section etc. all has been calculated in the strain rate, only be a kind of strain control of simulation, the displacement increment that namely participates in calculating not is the displacement increment of gauge length section (or active section); To the second situation, although realized strain control, the Rare Metals Materials good for plasticity, that thickness is little increases the high temperature pull bar and also might have influence on final test findings.
Summary of the invention
The purpose of this utility model provides a kind of strain control device for foil material high temperature tension test, solves the problem that can not realize truly strain control in the prior art fully, guarantees that testing result is more accurate.
The technical scheme that the utility model adopts is, the strain control device that is used for foil material high temperature tension test, stove inner top at heating furnace arranges high temperature tensile clamp, vertical clamping thin strip tensile sample under the high temperature tensile clamp, the refractory ceramics arm of direct insertion extensometer is connected with the thin strip tensile sample is vertical by the high temperature stay cord respectively, and the measuring distance of direct insertion extensometer is identical with the gauge length distance of thin strip tensile sample.
The beneficial effects of the utility model are to use direct insertion high-temperature extensometer, and extensometer gage length is consistent with the gauge length of sample to be tested.During test, extensometer is by any external strength, by the high temperature stay cord with the extensometer clamping on sample, the top sample marking distance point position that withstands on of a word of two refractory ceramics arms of extensometer.When surrender occured on-test to sample, extensometer not only just was used for the monitor strain amount, directly feeds back to testing machine control software but the gauge length section that records is moved increment, and software is realized the automatic control of rate of extension according to feedback data.Realized strain rate control real on the physical significance, satisfied the requirement of standard, simultaneously, removed the high temperature pull bar, the useful space increases in the heating furnace, and the clamping process of thermopair, extensometer is become simple, and security performance significantly improves.
Description of drawings
Fig. 1 is the structural representation of the utility model strain control device.
Among the figure, 1. heating furnace, 2. direct insertion extensometer, 3. thin strip tensile sample, 4. high temperature tensile clamp.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is elaborated.
The utility model is used for the structure of the strain control device of foil material high temperature tension test, as shown in Figure 1, stove inner top at heating furnace 1 arranges high temperature tensile clamp 4,4 times vertical clamping thin strip tensile samples 3 of high temperature tensile clamp, the refractory ceramics arm of direct insertion extensometer two levels about in the of 2 is respectively by high temperature stay cord and 3 vertical connections of thin strip tensile sample, and the measuring distance of direct insertion extensometer 2 is identical with the gauge length distance of thin strip tensile sample 3.The refractory ceramics arm that the high temperature stay cord is parallel to direct insertion extensometer 2 is to guarantee vertical and thin strip tensile sample 3 axis of direct insertion extensometer 2 and to be subjected to force direction.
The strain control device that the utility model is used for foil material high temperature tension test is, uses direct insertion extensometer 2, and extensometer gage length is consistent with the gauge length of thin strip tensile sample 3.During test, by the high temperature stay cord with direct insertion extensometer 2 clampings on thin strip tensile sample 3, the top thin strip tensile sample 3 gauge length positions that withstand on of 3 two refractory ceramics arm one words of thin strip tensile sample.Test is ready after direct insertion extensometer 2 zero clearings.Surrender when occuring to thin strip tensile sample 3 in on-test, the deflection of direct insertion extensometer 2 is in continuous variation, direct insertion extensometer 2 not only just is used for the monitor strain amount, directly feed back to testing machine control software but the gauge length section that records is moved increment, software is realized the automatic control of rate of extension according to feedback data.
The utility model has been realized strain rate control real on the physical significance, has satisfied the requirement of standard, simultaneously, has removed the high temperature pull bar, and the useful space increases in the heating furnace, and the clamping process of direct insertion extensometer is become simple, and security performance significantly improves.
Claims (1)
1. the strain control device that is used for foil material high temperature tension test, it is characterized in that, stove inner top at heating furnace (1) arranges high temperature tensile clamp (4), the lower vertical clamping thin strip tensile sample (3) of high temperature tensile clamp (4), direct insertion extensometer (2) the up and down refractory ceramics arm of two levels passes through respectively high temperature stay cord and vertical connection of thin strip tensile sample (3), and the measuring distance of described direct insertion extensometer (2) is identical with the gauge length distance of thin strip tensile sample (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220375655 CN202770717U (en) | 2012-07-30 | 2012-07-30 | Strain control device for high-temperature tension test of foil strips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220375655 CN202770717U (en) | 2012-07-30 | 2012-07-30 | Strain control device for high-temperature tension test of foil strips |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202770717U true CN202770717U (en) | 2013-03-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220375655 Expired - Lifetime CN202770717U (en) | 2012-07-30 | 2012-07-30 | Strain control device for high-temperature tension test of foil strips |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202770717U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109115114A (en) * | 2018-07-19 | 2019-01-01 | 成都航大新材料有限公司 | Laser extensometer and its measurement method |
| CN113959862A (en) * | 2021-10-26 | 2022-01-21 | 上海电气核电设备有限公司 | Method and device for measuring sample deformation by using plug-in extensometer of closed heating furnace |
| CN114518289A (en) * | 2022-01-25 | 2022-05-20 | 深圳三思纵横科技股份有限公司 | Control method for deformation strain control by video acquisition |
-
2012
- 2012-07-30 CN CN 201220375655 patent/CN202770717U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109115114A (en) * | 2018-07-19 | 2019-01-01 | 成都航大新材料有限公司 | Laser extensometer and its measurement method |
| CN113959862A (en) * | 2021-10-26 | 2022-01-21 | 上海电气核电设备有限公司 | Method and device for measuring sample deformation by using plug-in extensometer of closed heating furnace |
| CN114518289A (en) * | 2022-01-25 | 2022-05-20 | 深圳三思纵横科技股份有限公司 | Control method for deformation strain control by video acquisition |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180619 Address after: 721013 206 new high road, Baoji hi tech Development Zone, Shaanxi Co-patentee after: STATE NUCLEAR BAO TI ZIRCONIUM INDUSTRY Co. Patentee after: STATE NUCLEAR ZIRCONIUM PHOSPHATE CHEMICAL TESTING CO.,LTD. Address before: 721013 Baoji hi tech Avenue, Baoji, Shaanxi Patentee before: STATE NUCLEAR BAO TI ZIRCONIUM INDUSTRY Co. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130306 |
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| CX01 | Expiry of patent term |