CN203811481U - Constant-stress creep testing machine - Google Patents
Constant-stress creep testing machine Download PDFInfo
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- CN203811481U CN203811481U CN201420160859.4U CN201420160859U CN203811481U CN 203811481 U CN203811481 U CN 203811481U CN 201420160859 U CN201420160859 U CN 201420160859U CN 203811481 U CN203811481 U CN 203811481U
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Abstract
The utility model belongs to the field of the mechanical property of a material. In order to solve the difficulty of constant-stress loading for creep deformation of a metal material, the utility model discloses a constant-stress creep testing machine. The constant-stress creep testing machine comprises a load crank, a cross rod, a horizontal weighting rod, a vertical weighting rod, a horizontal weight, a vertical weight, a heating furnace, a sample clamp, a deformation measuring rod, a deformation measuring drum, a heating filament, a heating filament electrode sleeve, a steel wire rope, a cross beam, a base, a vertical column and nuts, wherein the load crank consists of a bending section with specific curvature and a horizontal section; the cross rod is connected with the load crank and is used as a rotary fulcrum of the load crank; the load crank is connected with certain load; indirect loading is carried out on a sample in the heating furnace by utilizing a lever principle, and when the creep test occurs on the metal sample at certain temperature, the load crank rotates by certain angle, so that the stress on the sample is constant and the creep deformation can be intuitively measured by the deformation measuring rod.
Description
Technical field
The utility model belongs to material mechanical performance field tests, is specifically related to a kind of constant stres sereep testing machine for metal material creep fatigue experimental test.
Background technology
Generally, mechanical property is the important indicator of research and evaluation material property, and the croop property that wherein material shows under constant stress is a very important technical indicator.Creep test is normally carried out under steady temperature, permanent load, keep constant stress, just must change the power acting on sample.Metal parts, during hot operation, is subject to the acting in conjunction of static stress and pulsating stress conventionally, and practical distortion process is different.For the pure deformation of creep under static load effect, be different from the pure fatigue deformation under complete Cyclic Load, but creep and tired synergistic complex deformation process.The research method of complex deformation behavior under this pulsating stress effect is had to two kinds at present: first method is to simulate metal parts completely to test at the stressing conditions under actual operating conditions; Second method is the creep test (being referred to as CYCLIC CREEP PROPERTIES experiment) of carrying out under certain regulation Cyclic Load, and compares with the creep behaviour (being referred to as static creep) under constant load effect.Therefore how carrying out constant force load operation in creep test is the problem that research metal material croop property faces.Enter background technology and describe paragraph.
Summary of the invention
The utility model is a kind of constant stres sereep testing machine, retain traditional creep testing machine mechanical lever principle of work, load the arm of force and adopt the form of cranking arm, cranking arm to load not only to keep creep sample to be subject to all the time constant stress, has also realized more accurate measuring metallic materials sample fatigue behaviour under set point of temperature, constant stress.
A kind of constant stres sereep testing machine by load crank arm, cross bar, horizontal weight linear meter, vertical counter-weight bar, horizontal counterweight stone roller, vertical counter-weight stone roller, heating furnace, sample holder, distortion measurement bar, distortion measurement cylinder, heat filament, heat filament electrode sleeve, wire rope, crossbeam, base, column and nut form.Cross bar is used for connecting load cranks arm, the rotating fulcrum of cranking arm as load, and load is cranked arm for connecting certain load; Load is cranked arm and is made up of the bending section of specific curvature and horizontal segment, and bending section processes circular hole with weight reduction, and horizontal segment is provided with internal thread, connects and composes entirety with horizontal weight linear meter, utilizes lever principle to carry out Indirect Loaded to sample.Horizontal weight linear meter, vertical counter-weight bar, horizontal counterweight stone roller, vertical counter-weight stone roller are positioned at load and crank arm and load the opposite side of sample, the horizontal segment that load is cranked arm, horizontal weight linear meter, horizontal counterweight stone roller, vertical counter-weight bar, vertical counter-weight stone roller are connected successively, can level, vertical adjusting, this mechanism counterweight to horizontal and vertical before on-test is adjusted, the stability of the stress while improving test, sample being loaded; Wire rope connects load cranks arm and test load, and wire rope is fitted in to load completely and cranks arm above, and the other end is used for connecting loading sample, can bear enough load, 1 meter of length.When test button is during in uniform temperature generation creep test, load is cranked arm the rotation of certain angle will be occurred, and due to the Curvature Effect that load is cranked arm, the power that makes to act on sample changes along with the change of creep areas minimum sectional area, makes the constant of sample upper stress.Cross bar is realized sufficient lubrication effect by solid oil, ensures that the friction force of cranking arm while rotation, within the scope of permissible error, improves reliability and security that constant stres sereep testing machine works long hours.Heating furnace meets the heating condition of creep sample, is mainly made up of heat filament and heat filament electrode sleeve, and heat filament electrode sleeve is placed in the end of heat filament, meets continuous heating condition.Distortion measurement mechanism is made up of distortion measurement bar, distortion measurement cylinder and distortion measurement collet chuck, in the time of the sample generation deformation of creep, sample can drive distortion measurement bar to be moved in distortion measurement cylinder by deformation sample holder, its displacement is the deflection of sample, can intuitively record deformation of creep amount.
Brief description of the drawings
Fig. 1 is the utility model structural representation
In figure, horizontal weight linear meter (1), horizontal counterweight stone roller (2), vertical counter-weight bar (3), nut (4), vertical counter-weight stone roller (5), nut (6), heating furnace (7), sample (8), base (9), nut (10), nut (11), cross bar cover (12), cross bar (13), wire rope (14), nut (15), nut (16), sample holder (17), distortion measurement bar (18), distortion measurement cylinder (19), distortion measurement collet chuck (20), column (21), heat filament (22), heat filament electrode sleeve (23), crossbeam (24), nut (25), load crank arm (26).
Embodiment
It is upper that in figure, load is cranked arm (26), cross bar cover (12) is fixed on cross bar (13), and load is cranked arm (26) using cross bar (13) as fulcrum, rotates around cross bar (13).The horizontal segment machining internal thread that load is cranked arm, horizontal weight linear meter (1), horizontal counterweight stone roller (2) is fastening by two nuts (10), (11), can on horizontal weight linear meter, move left and right.Horizontal counterweight stone roller (2) lower end connects vertical counter-weight bar (3), vertical counter-weight stone roller (5) is fastening by nut (4), (6) equally, and can on vertical counter-weight bar (3), move up and down, make wire rope (14) be fitted in load completely and crank arm (26) above, and load on wire rope (14).Wire rope (14) other end is walked around cross bar (13) by the sample (8) in nut (15), (25) fixing heating furnace (7).Sample (8) lower end is fixed on the crossbeam (24) of base (9) by nut (25).Distortion measurement bar (18), distortion measurement cylinder (19), distortion measurement collet chuck (20) interconnect by nut (16), perpendicular to the ground, utilize distortion measurement bar (18) and the displacement difference of distortion measurement cylinder (19) to determine the deformation of creep amount of sample.Sample (8) anamorphic stretching drives distortion measurement bar (18) to move up in distortion measurement cylinder (19), and its displacement is the deformation of creep amount of sample at a certain temperature.
While starting to test, sample (8) is held on to sample holder (17) upper, heating furnace (7) is switched on, heat filament electrode sleeve (23) is placed in the end of heat filament (22), starts to keep temperature-resistant while reaching predetermined temperature.Crank arm in loading (26) are upper to be loaded by wire rope (14) simultaneously, regulate the nut (6) on horizontal weight linear meter (1), vertical counter-weight bar (3), horizontal counterweight stone roller (2), vertical counter-weight stone roller (5), make load crank arm (26) keep certain angle reach balance, loading is cranked arm load that (26) side loads perpendicular to ground, and on tangent line in now cranking arm.Column (21) plays a supportive role to whole equipment.
A kind of constant stres sereep testing machine structure of the utility model device is simple, easy to operate, has improved the measuring accuracy of creep testing machine in the past.
Claims (7)
1. a constant stres sereep testing machine, comprise: load is cranked arm, crossbeam, weight linear meter, counterweight stone roller, heating furnace, sample holder, distortion measurement bar, distortion measurement cylinder, heat filament, heat filament electrode sleeve, wire rope, base, column and nut, it is characterized in that: a kind of load of constant stres sereep testing machine is cranked arm and is made up of the bending section of specific curvature and horizontal segment, the rotating fulcrum that cross bar is cranked arm as load, with horizontal weight linear meter, vertical counter-weight bar, horizontal counterweight stone roller, vertical counter-weight stone roller, heating furnace, distortion measurement bar, distortion measurement cylinder and distortion measurement collet chuck connect and compose entirety.
2. a kind of constant stres sereep testing machine according to claim 1, is characterized in that: the bending section that load is cranked arm processes circular hole with weight reduction, and horizontal segment is provided with internal thread.
3. a kind of constant stres sereep testing machine according to claim 1, it is characterized in that: horizontal weight linear meter, vertical counter-weight bar, horizontal counterweight stone roller, vertical counter-weight stone roller are positioned at load and crank arm and load the opposite side of sample, the horizontal segment that load is cranked arm, horizontal weight linear meter, horizontal counterweight stone roller, vertical counter-weight bar, vertical counter-weight stone roller are connected successively, can level, vertical adjusting.
4. a kind of constant stres sereep testing machine according to claim 1, is characterized in that: wire rope is fitted in to load completely and cranks arm above, and one end connects loading sample, can bear enough load, 1 meter of length.
5. a kind of constant stres sereep testing machine according to claim 1, it is characterized in that: cross bar is realized sufficient lubrication effect by solid oil, ensure that friction force that load cranks arm while rotation, within the scope of permissible error, improves reliability and security that constant stres sereep testing machine works long hours.
6. a kind of constant stres sereep testing machine according to claim 1, is characterized in that: heating furnace is mainly made up of heat filament and heat filament electrode sleeve, and heat filament electrode sleeve is placed in the end of heat filament, meets continuous heating condition.
7. a kind of constant stres sereep testing machine according to claim 1, it is characterized in that: distortion measurement mechanism is made up of distortion measurement bar, distortion measurement cylinder and distortion measurement collet chuck, in the time of the sample generation deformation of creep, sample can drive distortion measurement bar to be moved in distortion measurement cylinder by deformation sample holder, its displacement is the deflection of sample, can record intuitively deformation of creep amount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420160859.4U CN203811481U (en) | 2014-04-03 | 2014-04-03 | Constant-stress creep testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420160859.4U CN203811481U (en) | 2014-04-03 | 2014-04-03 | Constant-stress creep testing machine |
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| Publication Number | Publication Date |
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| CN203811481U true CN203811481U (en) | 2014-09-03 |
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| CN201420160859.4U Expired - Fee Related CN203811481U (en) | 2014-04-03 | 2014-04-03 | Constant-stress creep testing machine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442195A (en) * | 2016-11-07 | 2017-02-22 | 上海华龙测试仪器股份有限公司 | Balance calibration device |
| RU2640319C2 (en) * | 2016-06-02 | 2017-12-27 | Общество с ограниченной ответственностью ХОЗРАСЧЕТНЫЙ ТВОРЧЕСКИЙ ЦЕНТР УФИМСКОГО АВИАЦИОННОГО ИНСТИТУТА | Method and device for testing ropes for durability in liquid aggressive media and at different temperatures |
| CN109085076A (en) * | 2018-11-02 | 2018-12-25 | 武汉科技大学 | A kind of device for bituminous concrete constant temperature and humidity creep recovery experiment |
| CN112129643A (en) * | 2020-10-15 | 2020-12-25 | 华能国际电力股份有限公司 | Device and method for obtaining creep deformation curve by using mechanical endurance testing machine |
| 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 |
| CN113281192A (en) * | 2021-06-18 | 2021-08-20 | 中国船舶重工集团公司第七二五研究所 | Cold-hot alternating fatigue test method under constant stress |
| CN114235555A (en) * | 2021-12-20 | 2022-03-25 | 江苏神韵绳缆有限公司 | High-modulus polyethylene rope constant load creep testing device |
-
2014
- 2014-04-03 CN CN201420160859.4U patent/CN203811481U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2640319C2 (en) * | 2016-06-02 | 2017-12-27 | Общество с ограниченной ответственностью ХОЗРАСЧЕТНЫЙ ТВОРЧЕСКИЙ ЦЕНТР УФИМСКОГО АВИАЦИОННОГО ИНСТИТУТА | Method and device for testing ropes for durability in liquid aggressive media and at different temperatures |
| CN106442195A (en) * | 2016-11-07 | 2017-02-22 | 上海华龙测试仪器股份有限公司 | Balance calibration device |
| CN109085076A (en) * | 2018-11-02 | 2018-12-25 | 武汉科技大学 | A kind of device for bituminous concrete constant temperature and humidity creep recovery experiment |
| CN109085076B (en) * | 2018-11-02 | 2023-11-21 | 武汉科技大学 | Device for asphalt concrete constant temperature and humidity creep recovery experiment |
| CN112129643A (en) * | 2020-10-15 | 2020-12-25 | 华能国际电力股份有限公司 | Device and method for obtaining creep deformation curve by using mechanical endurance testing machine |
| 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 |
| CN113281192A (en) * | 2021-06-18 | 2021-08-20 | 中国船舶重工集团公司第七二五研究所 | Cold-hot alternating fatigue test method under constant stress |
| CN114235555A (en) * | 2021-12-20 | 2022-03-25 | 江苏神韵绳缆有限公司 | High-modulus polyethylene rope constant load creep testing device |
| CN114235555B (en) * | 2021-12-20 | 2024-03-22 | 江苏神韵绳缆有限公司 | Constant load creep testing device for high-modulus polyethylene rope |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20150403 |
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| EXPY | Termination of patent right or utility model |