CN101526451A - High temperature fatigue test clamp for metal thin wall equal-wall thickness tube - Google Patents
High temperature fatigue test clamp for metal thin wall equal-wall thickness tube Download PDFInfo
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- CN101526451A CN101526451A CN200910058798A CN200910058798A CN101526451A CN 101526451 A CN101526451 A CN 101526451A CN 200910058798 A CN200910058798 A CN 200910058798A CN 200910058798 A CN200910058798 A CN 200910058798A CN 101526451 A CN101526451 A CN 101526451A
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- 239000002184 metal Substances 0.000 title claims abstract description 22
- 238000009661 fatigue test Methods 0.000 title claims abstract description 15
- 230000007704 transition Effects 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 9
- 239000002131 composite material Substances 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 35
- 238000012360 testing method Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000010339 dilation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
本发明公开了一种金属薄壁等壁厚管材高温疲劳试验夹具，用于在高温疲劳试验中对金属薄壁管材进行夹持。有一主轴1，所述主轴具有锥形夹持套11、中部螺纹段12和夹持段13；锁紧套筒2和过渡套筒3依次套接在主轴的锥形夹持套11上；锁紧螺帽5旋接在主轴的中部螺纹段12上；夹持垫套6套接在主轴的夹持段；主轴锥形夹持套11和夹持垫套6均具有可改变径向尺度的弹性机构。本发明可满足多种规格薄壁等厚度管件在高温环境下的单轴、纯扭和轴扭复合疲劳试验，结构简单，试样尺寸适应范围大，夹持功能突出，节省试样材料。
The invention discloses a fixture for high-temperature fatigue test of metal thin-walled and equal-wall-thick pipes, which is used for clamping metal thin-walled pipes in the high-temperature fatigue test. There is a main shaft 1, the main shaft has a tapered clamping sleeve 11, a middle threaded section 12 and a clamping section 13; the locking sleeve 2 and the transition sleeve 3 are sequentially sleeved on the tapered clamping sleeve 11 of the main shaft; The tightening nut 5 is screwed on the middle threaded section 12 of the main shaft; the clamping pad 6 is sleeved on the clamping section of the main shaft; elastic body. The invention can meet the uniaxial, pure torsion and axial torsion composite fatigue tests of various specifications of thin-walled and equal-thickness pipe fittings under high temperature environment.
Description
Affiliated technical field
The present invention relates to material test equipment, especially the manufacturing field of metal thin-wall equal thickness tubing high temperature fatigue test clamp.
Background technology
The torture test of metal material plays important directive function for the fatigue strength design of hardware.In order to examine or check the fatigue behaviour of hardware, usually metal material processing is become solid bar-shaped sample to carry out torture test under room temperature and the hot environment.The torture test technology of relevant bar-shaped sample is quite ripe, international, has domesticly also released a series of corresponding torture test standards.But along with developing rapidly of reactor engineering, pressure vessels for the chemical industry engineering etc., the metal thin-wall pipe fitting is able to widespread use in engineering reality.Because of there being special clamping difficulty, make the fatique testing at elevated temperature of metal thin-wall equal thickness pipe fitting be difficult to carry out.Under hot environment, owing to be subjected to the restriction of high temperature furnace, required pipe sample is longer, and long pipe sample very easily produces the fatigue and cyclic unstability in the torture test process.For fear of producing deformation instability, the mode that usually adopts the secondary anchor clamps to be threaded reduces the length of required pipe sample, reaches the purpose of saving sample material simultaneously.Yet, can't adopt thread connecting mode to prolong sample for pipe fitting.For avoiding the tired unstability in the experimentation, for the thick-walled pipe sample, process a deep-slotted chip breaker at the work pipeline section sometimes, make the active section diameter reduce, carrying out with the radial strain of deep-slotted chip breaker root control torture test is converted into axial strain with radial strain then.This technical scheme only is suitable for the enough big metal tube sample of wall thickness, and specimen size adaptability is very poor; Pipe sample active section be funnel shaped but not etc. straight shape, need carry out the conversion between the coaxial strain of radial strain, wherein have certain conversion error; The required pipe sample of the special test that this technical scheme limited is still longer, and the sample consumptive material is bigger.For in, thin equal thickness metal tube, still do not have any effective technology scheme that realizes single, the multiaxle fatigue experimental under the hot environment at present.
Summary of the invention
The purpose of this invention is to provide a kind of high temperature fatigue test clamp for metal thin wall equal-wall thickness tube, make it to overcome the above shortcoming of prior art, not only can realize single, the multiaxle fatigue experimental of metal thin-wall pipe fitting under the hot environment, but also reach the purpose of saving sample material.
The objective of the invention is to realize by following means.
High temperature fatigue test clamp for metal thin wall equal-wall thickness tube is used in fatique testing at elevated temperature metal thin wall pipe being carried out clamping.One main shaft 1 is arranged, and described main shaft has taper retaining sleeve 11, middle part thread segment 12 and gripping section 13; Locking sleeve 2 and transition sleeve 3 are socketed on the taper retaining sleeve 11 of main shaft successively; Check nut 5 is screwed on the middle part thread segment 12 of main shaft; Clamp cushion cover 6 is socketed in the gripping section of main shaft; Main shaft taper retaining sleeve 11 and clamp cushion cover 6 all have the elastic mechanism that can change radial dimension.
When actual experiment, at first will manage the sample two ends and fill in the metal plug, the end that to manage sample then inserts in the main shaft taper retaining sleeve, a series of parts such as same main shaft, locking sleeve, transition sleeve, elastomeric pad and check nut are connected, be delivered to the mechanical presses power of main shaft by check nut, realize anchor clamps tentatively holding tightly sample.The other end of sample is done the clamping setting of symmetry.Afterwards, the transition sleeve of sample and anchor clamps is partly placed hot environment, according to expansion principle, the thermal expansivity of design spindle material is greater than locking sleeve, because of thermal dilation difference produces different thermal strains, realize anchor clamps holding tightly once more between intensification rear jig main shaft and locking sleeve and the sample to the pipe sample.Simultaneously, the metal plug also adopts the higher material of thermal expansivity, produces indent be out of shape when being subjected to the anchor clamps clamping to prevent to manage sample, thereby strengthen comprehensively the hold power of anchor clamps to the pipe sample.The gripping section of anchor clamps of the present invention cooperates clamp cushion cover can adapt to the testing machine chuck of plurality of specifications.
Adopt design proposal of the present invention, can satisfy single, the multiaxle fatigue experimental of plurality of specifications thin-walled equal thickness pipe fitting under hot environment, simple in structure, specimen size accommodation is big, and holding function is outstanding, saves sample material.Also can realize the high temperature torsional fatigue test of small size solid bar.
Description of drawings
Fig. 1 is the outside drawing behind the embodiment of the invention clamping sample.
Fig. 2 is the 3-D view of embodiment of the invention main shaft.
Fig. 3 is the cut-open view of embodiment of the invention main shaft.
Fig. 4 is the cut-open view of embodiment of the invention locking sleeve.
Fig. 5 is the cut-open view of embodiment of the invention clamp cushion cover.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Can find out basic structure of the present invention and embodiment in conjunction with Fig. 1 to Fig. 5.Metal thin-wall equal thickness tubing high temperature fatigue test clamp has a main shaft (1), and described main shaft has taper retaining sleeve (11), middle part thread segment (12) and gripping section (13); Locking sleeve (2) and transition sleeve (3) are socketed on the taper retaining sleeve (11) of main shaft successively; Check nut (5) is screwed on the middle part thread segment (12) of main shaft; Clamp cushion cover (6) is socketed in the gripping section (13) of main shaft; Main shaft taper retaining sleeve (11) is for changing the elastic mechanism of radial dimension, be generally multi-clove type symmetric configuration structure, adopt fFour piece type Outer Taper structure, the perforate of cone root symmetry at this, can reduce the deformation rigidity of cone, thereby strengthen the effect of holding tightly the pipe sample; Main shaft taper retaining sleeve (11) can reduce the stress of cone root and concentrate, thereby effectively avoid main shaft (1) to rupture in cone root place in the process of holding the pipe sample tightly with being arc transition between middle part thread segment (12).Clamp cushion cover (6) adopts stretched structures such as fFour piece type for changing the elastic mechanism of radial dimension at this, have with the similar holding function of main shaft taper retaining sleeve (11).
As shown in Figure 1, end plug at pipe sample (7) is gone into metal plug (being made by the material with high thermal expansion coefficient), to manage this end of sample (7) and put into main shaft (1), it is enough dark that the pipe sample of putting into is wanted, it is big to make anchor clamps hold the amount of overcoming tightly, note to put into dark again, otherwise influence the elastic deformability of main shaft taper retaining sleeve.According to order shown in Figure 1, locking sleeve (2), transition sleeve (3), elastomeric pad (4) and check nut (5) are installed successively, the gripping section (13) of anchor clamps is put clamp cushion cover (6) and hold tightly with grip of testing machine.Tighten check nut (5), make main shaft (1) produce enough big extruding force to pipe sample (7), the other end of pipe sample (7) is loaded onto anchor clamps of the present invention according to identical method cover.After sample to be managed (7) installation, to manage sample (7) and anchor clamps of the present invention (comprising locking sleeve (2) and transition sleeve (3) part) and place hot environment in the lump, after waiting to be raised to test temperature, pipe sample (7) and chucking appliance system will make anchor clamps that the power of holding tightly of pipe sample (7) is strengthened greatly because of the difference of material heat expansion.In this example, main shaft (1), transition sleeve (3) and plug material are all selected the GH2036 alloy for use, locking sleeve (2) material selection 1Cr17Ni2 alloy.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910058798A CN101526451A (en) | 2009-04-01 | 2009-04-01 | High temperature fatigue test clamp for metal thin wall equal-wall thickness tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910058798A CN101526451A (en) | 2009-04-01 | 2009-04-01 | High temperature fatigue test clamp for metal thin wall equal-wall thickness tube |
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| CN101526451A true CN101526451A (en) | 2009-09-09 |
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| CN200910058798A Pending CN101526451A (en) | 2009-04-01 | 2009-04-01 | High temperature fatigue test clamp for metal thin wall equal-wall thickness tube |
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Cited By (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949796A (en) * | 2010-10-18 | 2011-01-19 | 西南交通大学 | Multi-function extension clamp for material fatigue test |
| CN102288482A (en) * | 2011-05-12 | 2011-12-21 | 常熟市良益金属材料有限公司 | High temperature tensile clamp |
| CN102501049A (en) * | 2011-10-31 | 2012-06-20 | 长城汽车股份有限公司 | Assembling device for snap spring |
| CN102507310A (en) * | 2011-11-29 | 2012-06-20 | 中国建筑科学研究院 | Inverted cone active clamping type mechanical drawing head |
| CN103630447A (en) * | 2013-11-29 | 2014-03-12 | 沈阳黎明航空发动机(集团)有限责任公司 | High-temperature tensile testing method for whole metal pipe and special fixture used in high-temperature tensile testing method |
| CN103868796A (en) * | 2014-03-12 | 2014-06-18 | 安徽省（水利部淮河水利委员会）水利科学研究院 | Locking device for tensile test of concrete core sample |
| CN104222070A (en) * | 2014-09-19 | 2014-12-24 | 河南省农业科学院畜牧兽医研究所 | Adjustable embryo freezing tubule scaleplate rack |
| CN104299605A (en) * | 2014-09-15 | 2015-01-21 | 河北金音乐器集团有限公司 | Flute provided with hand support |
| CN104390856A (en) * | 2014-12-16 | 2015-03-04 | 中国科学院合肥物质科学研究院 | Clamp for metal thin-wall whole segment tube axial tension and compression fatigue test |
| CN104704341A (en) * | 2012-08-08 | 2015-06-10 | Mts系统公司 | Test specimen holder for high temperature environments |
| CN105158082A (en) * | 2015-08-31 | 2015-12-16 | 中国船舶重工集团公司第七二五研究所 | Auxiliary device for metal pipe high-temperature tension test and application method of auxiliary device |
| CN105149880A (en) * | 2015-09-16 | 2015-12-16 | 中国航空工业集团公司北京航空材料研究院 | Manufacturing method of fatigue test specimen of high-temperature alloy thin-wall welded pipe |
| CN105510130A (en) * | 2015-11-25 | 2016-04-20 | 上海复合材料科技有限公司 | Auxiliary tool used for testing tensile property of composite material circular tube |
| CN106092736A (en) * | 2016-08-01 | 2016-11-09 | 西北工业大学 | A kind of metal plate-like sample Temperature High Cycle Fatigue test fixture |
| CN106286059A (en) * | 2016-09-13 | 2017-01-04 | 中国北方发动机研究所(天津) | A kind of fuel injector for internal combustion engines locating sleeve structure |
| CN107024385A (en) * | 2017-04-20 | 2017-08-08 | 江苏博朗森思医疗器械有限公司 | A kind of novel fine justifies wire tension test fixture |
| CN108061685A (en) * | 2017-11-30 | 2018-05-22 | 中国航发沈阳黎明航空发动机有限责任公司 | Suitable for the fixing device of small dimension metal pipe material high temperature mechanics performance determining |
| CN108507875A (en) * | 2018-03-22 | 2018-09-07 | 浙江工业大学 | A kind of experimental rig suitable for homogeneous metal thin-walled straight tube fatigue test |
| CN108844810A (en) * | 2018-05-29 | 2018-11-20 | 西安热工研究院有限公司 | A kind of full pipe sample stress-rupture tester fixture of small diameter metal thin-wall tube |
| US10180379B2 (en) | 2014-06-06 | 2019-01-15 | Mts Systems Corporation | Airflow diverter for reduced specimen temperature gradient |
| CN105388062B (en) * | 2015-11-26 | 2019-03-01 | 中国航空工业集团公司北京航空材料研究院 | A kind of specimen holder of pull test tubing or bar |
| CN109991072A (en) * | 2018-11-28 | 2019-07-09 | 南京航空航天大学 | A high temperature tensile test chuck and testing machine |
| CN111595695A (en) * | 2020-06-04 | 2020-08-28 | 上海交通大学 | Clearance elimination device and method suitable for low-temperature tension-compression fatigue test |
| CN111829874A (en) * | 2020-07-24 | 2020-10-27 | 中国核动力研究设计院 | Clamp and test method for zirconium tube fatigue test |
| CN112255105A (en) * | 2020-10-20 | 2021-01-22 | 桂林电子科技大学 | Micro-welding-point creep life testing device and using method |
| CN114235561A (en) * | 2021-12-17 | 2022-03-25 | 中国核动力研究设计院 | High-temperature fatigue test fixture and test method suitable for thin-wall cladding tube |
| CN119470010A (en) * | 2025-01-14 | 2025-02-18 | 南昌航空大学 | A hollow tubular specimen fixture and test method |
-
2009
- 2009-04-01 CN CN200910058798A patent/CN101526451A/en active Pending
Cited By (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949796A (en) * | 2010-10-18 | 2011-01-19 | 西南交通大学 | Multi-function extension clamp for material fatigue test |
| CN101949796B (en) * | 2010-10-18 | 2012-09-19 | 西南交通大学 | Multifunctional Material Fatigue Test Extension Fixture |
| CN102288482A (en) * | 2011-05-12 | 2011-12-21 | 常熟市良益金属材料有限公司 | High temperature tensile clamp |
| CN102501049A (en) * | 2011-10-31 | 2012-06-20 | 长城汽车股份有限公司 | Assembling device for snap spring |
| CN102507310A (en) * | 2011-11-29 | 2012-06-20 | 中国建筑科学研究院 | Inverted cone active clamping type mechanical drawing head |
| CN102507310B (en) * | 2011-11-29 | 2013-05-01 | 中国建筑科学研究院 | Inverted cone active clamping type mechanical drawing head |
| US9696218B2 (en) | 2012-08-08 | 2017-07-04 | Mts Systems Corporation | Test specimen holder for high temperature environments |
| CN104704341A (en) * | 2012-08-08 | 2015-06-10 | Mts系统公司 | Test specimen holder for high temperature environments |
| CN103630447A (en) * | 2013-11-29 | 2014-03-12 | 沈阳黎明航空发动机(集团)有限责任公司 | High-temperature tensile testing method for whole metal pipe and special fixture used in high-temperature tensile testing method |
| CN103868796A (en) * | 2014-03-12 | 2014-06-18 | 安徽省（水利部淮河水利委员会）水利科学研究院 | Locking device for tensile test of concrete core sample |
| CN103868796B (en) * | 2014-03-12 | 2016-06-22 | 安徽省（水利部淮河水利委员会）水利科学研究院 | A kind of concrete core sample tensile test locking device |
| US10180379B2 (en) | 2014-06-06 | 2019-01-15 | Mts Systems Corporation | Airflow diverter for reduced specimen temperature gradient |
| CN104299605A (en) * | 2014-09-15 | 2015-01-21 | 河北金音乐器集团有限公司 | Flute provided with hand support |
| CN104222070A (en) * | 2014-09-19 | 2014-12-24 | 河南省农业科学院畜牧兽医研究所 | Adjustable embryo freezing tubule scaleplate rack |
| CN104390856A (en) * | 2014-12-16 | 2015-03-04 | 中国科学院合肥物质科学研究院 | Clamp for metal thin-wall whole segment tube axial tension and compression fatigue test |
| CN105158082A (en) * | 2015-08-31 | 2015-12-16 | 中国船舶重工集团公司第七二五研究所 | Auxiliary device for metal pipe high-temperature tension test and application method of auxiliary device |
| CN105149880A (en) * | 2015-09-16 | 2015-12-16 | 中国航空工业集团公司北京航空材料研究院 | Manufacturing method of fatigue test specimen of high-temperature alloy thin-wall welded pipe |
| CN105149880B (en) * | 2015-09-16 | 2017-10-27 | 中国航空工业集团公司北京航空材料研究院 | A kind of preparation method of the fatigue test piece of high temperature alloy thin walled welds tubing |
| CN105510130A (en) * | 2015-11-25 | 2016-04-20 | 上海复合材料科技有限公司 | Auxiliary tool used for testing tensile property of composite material circular tube |
| CN105388062B (en) * | 2015-11-26 | 2019-03-01 | 中国航空工业集团公司北京航空材料研究院 | A kind of specimen holder of pull test tubing or bar |
| CN106092736A (en) * | 2016-08-01 | 2016-11-09 | 西北工业大学 | A kind of metal plate-like sample Temperature High Cycle Fatigue test fixture |
| CN106286059A (en) * | 2016-09-13 | 2017-01-04 | 中国北方发动机研究所(天津) | A kind of fuel injector for internal combustion engines locating sleeve structure |
| CN107024385A (en) * | 2017-04-20 | 2017-08-08 | 江苏博朗森思医疗器械有限公司 | A kind of novel fine justifies wire tension test fixture |
| CN108061685A (en) * | 2017-11-30 | 2018-05-22 | 中国航发沈阳黎明航空发动机有限责任公司 | Suitable for the fixing device of small dimension metal pipe material high temperature mechanics performance determining |
| CN108507875A (en) * | 2018-03-22 | 2018-09-07 | 浙江工业大学 | A kind of experimental rig suitable for homogeneous metal thin-walled straight tube fatigue test |
| CN108844810A (en) * | 2018-05-29 | 2018-11-20 | 西安热工研究院有限公司 | A kind of full pipe sample stress-rupture tester fixture of small diameter metal thin-wall tube |
| CN109991072A (en) * | 2018-11-28 | 2019-07-09 | 南京航空航天大学 | A high temperature tensile test chuck and testing machine |
| CN109991072B (en) * | 2018-11-28 | 2022-04-12 | 南京航空航天大学 | A high temperature tensile test chuck and testing machine |
| CN111595695A (en) * | 2020-06-04 | 2020-08-28 | 上海交通大学 | Clearance elimination device and method suitable for low-temperature tension-compression fatigue test |
| CN111829874A (en) * | 2020-07-24 | 2020-10-27 | 中国核动力研究设计院 | Clamp and test method for zirconium tube fatigue test |
| CN112255105A (en) * | 2020-10-20 | 2021-01-22 | 桂林电子科技大学 | Micro-welding-point creep life testing device and using method |
| CN114235561A (en) * | 2021-12-17 | 2022-03-25 | 中国核动力研究设计院 | High-temperature fatigue test fixture and test method suitable for thin-wall cladding tube |
| CN119470010A (en) * | 2025-01-14 | 2025-02-18 | 南昌航空大学 | A hollow tubular specimen fixture and test method |
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Open date: 20090909 |