CN206725140U - A kind of CT samples residual stress test device - Google Patents
A kind of CT samples residual stress test device Download PDFInfo
- Publication number
- CN206725140U CN206725140U CN201720566220.XU CN201720566220U CN206725140U CN 206725140 U CN206725140 U CN 206725140U CN 201720566220 U CN201720566220 U CN 201720566220U CN 206725140 U CN206725140 U CN 206725140U
- Authority
- CN
- China
- Prior art keywords
- samples
- residual stress
- screw mandrel
- pin
- test device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a kind of CT samples residual stress test device, CT samples including base, on base and the load maintainer to CT samples progress residual stress loading, the load maintainer includes screw mandrel, the loading screw rod of residual stress is loaded on screw mandrel and with the pin of CT samples cooperation and installed in one end of screw mandrel and to CT samples, the quantity of the pin is two, the structure of two pins is identical, and the pin includes the rectangular portion being sleeved on screw mandrel and is integrally formed with the rectangular portion and is located in the round bar portion in CT samples.The utility model is simple in construction, reasonable in design and use is easy to operate, by the way that CT samples are stretched and compressed, the distribution that CT samples produce different residual stress is obtained, is easy to implement the stress corrosion cracking crack growth rate analysis to materials such as nickel-base alloy and austenitic stainless steels.
Description
Technical field
The utility model belongs to CT sample residual stress test technical fields, more particularly, to a kind of CT samples residual stress
Test device.
Background technology
Under nuclear power high temperature and high pressure environment there is residual stress in welding point region, and residual stress is to stress corrosion cracking crackle
Spreading rate has large effect, and residual stress is one of principal element for influenceing stress corrosion cracking crack growth rate, is held
Failure is occurred due to the extension of crackle in corrosive atmosphere by the alloy of stress and is referred to as stress corrosion cracking.So welding
For joint because complicated welding structure, inevitably there is various defects, these defects near weld seam easily to develop into table
Facial cleft line, under plus load continuous action, face crack can not stop to extend, and finally make welding structure that low stress brittle fracture occur.
In welding point drawing process, split sharp near zone and produce very big residual stress field, by influenceing averagely should
Power and the outer mode for carrying pulsating stress maximum, have significantly affected stress corrosion cracking crack growth rate.Research finds, i.e.,
Make generation stress release, the influence of residual stress can not be completely eliminated.Residual stress has complexity, to corrosion cracking crackle
Spreading rate has a great influence, and depends primarily on amplitude, direction and the distribution of residual stress：Stretching residual stress can then reduce material
The yield strength of material, compressive residual stress can then reduce crack growth rate.Further, since in welding point Crack Extension
Redistribution phenomenon can occur for residual stress so that this problem is more complicated.Therefore the distribution of residual stress is measured, to stress corrosion
The research tool of crack spreading rate is of great significance.
Especially consider from nuclear safety, it is widely used in nuclear power key equipment and structure that there is good mechanics and corrosion resistance
Can austenitic stainless steel and nickel-base alloy, but in nuclear power station actual motion construction package occur with stress corrosion cracking
(SCC) projected life and the security of nuclear power generating equipment are significantly reduced for the environmental stress cracking (EAC) of representative, and prolonged as nuclear power station
The key issue that longevity must pull against.Into " rear Fukushima epoch ", Nuclear Safety regulatory authority is further to the standard of Nuclear Safety
Improve, particularly the public's media are paid high attention to nuclear safety problem, and to " zero tolerance " of Nuclear Power Accident, nuclear power key is set
Standby and material reliability proposes higher requirement.On the other hand, new nuclear power generating sets active time will extend to 60 years with
On, the in-service nuclear power generating sets of Countries have also been passed through approval of lengthening the life.Years Of Service extends, old unit is lengthened the life, equipment and material
The localization process of material is core, it is necessary to further strengthen studying to nuclear power key structure and material environment failure behaviour
The safe and efficient development of electricity provides powerful guarantee.
In order to study the stress corrosion of the materials such as nickel-base alloy and austenitic stainless steel under nuclear power HTHP water environment
Problem of Cracking, the compact tension specimen of generally use standard, three-point bending etc. carry out experimental study in the world.But tried in stress corrosion
To test in machine when carrying out stress corrosion cracking speed measurement, it is necessary to which loading tester carries out tensile loads, experimental test is relatively cumbersome,
Not only somewhat expensive but also testing efficiency is relatively low.Therefore, nowadays lack a kind of simple in construction, reasonable in design and simple using operation
Just CT sample residual stress test devices, are stretched and are compressed to CT samples by load maintainer, are obtained CT samples and are produced
The distribution of different residual stress, it is easy to implement the stress corrosion cracking crackle expansion to materials such as nickel-base alloy and austenitic stainless steels
Open up rate analysis.
Utility model content
Technical problem to be solved in the utility model is to be directed to above-mentioned deficiency of the prior art, there is provided a kind of CT examinations
Sample residual stress test device, its simple in construction, reasonable in design and use is easy to operate, and CT samples are carried out by load maintainer
Stretching and compression, the distribution that CT samples produce different residual stress is obtained, is easy to implement to nickel-base alloy and austenitic stainless steel
Stress corrosion cracking crack growth rate Deng material is analyzed, practical, is easy to promote the use of.
In order to solve the above technical problems, the technical solution adopted in the utility model is：A kind of CT samples residual stress test
Device, it is characterised in that：CT samples including base, on base and residual stress loading is carried out to the CT samples
Load maintainer, the load maintainer include screw mandrel, on screw mandrel and with the pin of CT samples cooperation and installed in screw mandrel
One end and the loading screw rod that residual stress is loaded to CT samples, the quantity of the pin is two, the structure of two pins
Identical, the pin includes the rectangular portion being sleeved on screw mandrel and is integrally formed and is located in CT samples with the rectangular portion
Round bar portion, the CT samples are nickel-based alloy sample or austenite stainless steel curved beam.
A kind of above-mentioned CT samples residual stress test device, it is characterised in that：Fix bar, institute are provided with the base
State the bottom surface of CT samples and the upper side of base is bonded to each other.
A kind of above-mentioned CT samples residual stress test device, it is characterised in that：It is provided with the other end of the screw mandrel
Angle dial, the angle dial include disk body and the pointer installed in disk body center, and the pointer connects with screw rod transmission
Connect.
A kind of above-mentioned CT samples residual stress test device, it is characterised in that：It is provided with the CT samples described in confession
The pin-and-hole that round bar portion is worn, the quantity of the pin-and-hole is two.
A kind of above-mentioned CT samples residual stress test device, it is characterised in that：The bottom of the CT samples and the square
Pad is provided between shape portion, the pad is sleeved in round bar portion.
A kind of above-mentioned CT samples residual stress test device, it is characterised in that：The fix bar includes being sleeved on CT examinations
The first fix bar in sample groove and the second fix bar for being arranged on CT samples trailing flank, first fix bar and second are fixed
Bar is installed on base.
A kind of above-mentioned CT samples residual stress test device, it is characterised in that：The loading screw rod is pacified by connector
Mounted in one end of screw mandrel, the loading screw rod is connected with screw rod transmission.
The utility model has advantages below compared with prior art：
1st, used load maintainer is simple in construction, reasonable in design and input cost is relatively low, processing and fabricating and installation are laid
It is convenient.
2nd, used load maintainer includes screw mandrel, pin and loading screw rod, by setting bayonet fittings to install CT samples,
Screw rod is loaded by setting, manually operated loading screw rod drives screw mandrel to rotate, and the rotation of screw mandrel drives pin level to move left and right,
To CT sample horizontal direction loading moments, correspondingly realize that loading screw rod is stretched and compressed to CT samples, should according to remnants
Power load test request, it is not necessary to loading tester carry out tensile loads, load test test it is relatively easy, not only expense it is low and
It is and simple to operate.
3rd, used pin includes rectangular portion and round bar portion, is installed by setting rectangular portion to coordinate with screw mandrel, and rectangle
Portion and round bar portion are integrally formed, so that rectangular portion and round bar portion center overlap, will can be incited somebody to action by rectangular portion and round bar portion
The torque that loading screw rod applies is loaded on CT samples so that CT sample uniform forces, ensures CT sample residual stress tests
Accuracy.
4th, the quantity of the pin is two, and two pins are located on CT samples, improve CT sample stress
Uniformity, CT samples stress occurs eccentric when avoiding the pin level from moving left and right, and influences the residual stress loading effect of CT samples.
3rd, used load maintainer is stretched and compressed to CT samples, obtains point that CT samples produce different residual stress
Cloth, the stress corrosion cracking crack growth rate analysis to materials such as nickel-base alloy and austenitic stainless steels is easy to implement, it is practical
Property is strong.
In summary, the utility model is simple in construction, reasonable in design and use is easy to operate, and CT is tried by load maintainer
Sample is stretched and compressed, and is obtained the distribution that CT samples produce different residual stress, is easy to implement to nickel-base alloy and austenite
The stress corrosion cracking crack growth rate analysis of the materials such as stainless steel, it is practical, it is easy to promote the use of.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is Fig. 1 left view.
Description of reference numerals:
1-base；2-CT samples；3-screw mandrel；
4-loading screw rod；5-fix bar；The fix bars of 5-1-first；
The fix bars of 5-2-second；6-angle dial；
6-1-disk body；6-2-pointer；7-pin-and-hole；
8-pad；9-pin；10-connector.
Embodiment
As depicted in figs. 1 and 2, the utility model includes base 1, the CT samples 2 on base 1 and the CT is tried
Sample 2 carry out residual stress loading load maintainer, the load maintainer include screw mandrel 3, on screw mandrel 3 and with CT samples 2
The pin 9 of cooperation and the loading screw rod 4 that residual stress is loaded installed in one end of screw mandrel 3 and to CT samples 2, the pin 9
Quantity is two, and the structure of two pins 9 is identical, the pin 9 include being sleeved on rectangular portion on screw mandrel 3 and with it is described
Rectangular portion is integrally formed and is located in the round bar portion in CT samples 2, the CT samples 2 be nickel-based alloy sample or austenite not
Become rusty steel curved beam.
In the present embodiment, by setting pin 9 to coordinate installation CT samples 2, screw rod 4 is loaded by setting, it is manually operated to add
Carrying screw rod 4 drives screw mandrel 3 to rotate, and the rotation of screw mandrel 3 drives the level of pin 9 to move left and right, to the horizontal direction loading force of CT samples 2
Square, correspondingly realize that loading screw rod 4 is stretched and compressed to CT samples 2, test request loaded according to residual stress, it is not necessary to
Loading tester carries out tensile loads, and load test test is relatively easy, and not only expense is low but also simple to operate.
In the present embodiment, by setting the pin 9 to include rectangular portion and round bar portion, by setting the rectangular portion and silk
Bar 3 coordinates installation, and the rectangular portion and the round bar portion are integrally formed, so that the rectangular portion and round bar portion center
Position overlaps, and the torque that loading screw rod 4 applies will can be uniformly loaded into CT samples 2 by the rectangular portion and the round bar portion
On so that the uniform force of CT samples 2, ensure the accuracy of the residual stress test of CT samples 2.
In the present embodiment, the quantity of the pin 9 is two, and two pins 9 are located on CT samples 2, is improved
The uniform force of CT samples 2, the stress of CT samples 2 occurs eccentric when avoiding pin 9 level from moving left and right, and influences CT samples 2
Residual stress loads effect.
In the present embodiment, fix bar 5, the bottom surface of the CT samples 2 and the upper side of base 1 are provided with the base 1
It is bonded to each other.
In the present embodiment, angle dial 6 is provided with the other end of the screw mandrel 3, the angle dial 6 includes disk
The body 6-1 and pointer 6-2 installed in disk body 6-1 centers, the pointer 6-2 are connected with screw mandrel 3.
In the present embodiment, by setting angle dial 6, person easy to operation understands the loading remnants of loading screw rod 4 in time
Stress, it is simple and convenient.
In the present embodiment, the pin-and-hole 7 worn for the round bar portion, the quantity of the pin-and-hole 7 are provided with the CT samples 2
For two.
In the present embodiment, pad 8 is provided between the bottom of the CT samples 2 and the rectangular portion, the pad 8 is set with
In round bar portion.
In the present embodiment, the fix bar 5 includes the first fix bar 5-1 being sleeved in the groove of CT samples 2 and is arranged on
Second fix bar 5-2, the first fix bar 5-1 and the second fix bar 5-2 of the trailing flank of CT samples 2 is installed on base 1.
In the present embodiment, by setting the first fix bar 5-1 and the second fix bar 5-2, so as to which CT samples 2 be fixedly mounted
In base 1, and the bottom surface of CT samples 2 and the upper side of base 1 are bonded to each other, are easy to the loading of the load maintainer.
In the present embodiment, it is described loading screw rod 4 by connector 10 be arranged on screw mandrel 3 one end, it is described loading screw rod 4 with
Screw mandrel 3 is connected.
The utility model is when it is implemented, first, by base 1, CT samples 2 and the load maintainer installation；Then,
The manually operated loading screw rod 4 of operator, loading screw rod 4, which rotates, drives screw mandrel 3 to rotate, and the rotation of screw mandrel 3 drives two pins 9 to divide
Do not move horizontally outward, to the horizontal direction loading moment of CT samples 2, realize the stretching to CT samples 2；Or operator is anti-manually
Screw rod 4 is loaded to operation, loading screw rod 4, which rotates backward, drives screw mandrel 3 to rotate backward, and screw mandrel 3 rotates backward two pins of drive
Level moves inward nail 9 respectively, to the horizontal direction loading moment of CT samples 2, realizes the compression to CT samples 2, meanwhile, to CT
During sample 2 is stretched and compressed, operator checks that the loading of loading screw rod 4 is remaining in time by angle dial 6
Stress, it is simple and convenient, CT samples 2 stretched and compress can produce different residual stress when, and remove CT samples 2 and use hardness
Instrument measures the Vickers hardness of sample, obtains the Vickers hardness corresponding to 2 different residual stress of CT samples, and according to Vickers hardness and
Relation between residual stress, the distribution of 2 different residual stress of CT samples is obtained, be easy to implement to nickel-base alloy and austenite not
The stress corrosion cracking crack growth rate analysis of the materials such as rust steel, practical, load test tests relatively easy, cost
It is low, strong adaptability, loading testing efficiency is improved, not only expense is low but also testing efficiency high-adaptability is strong.
It is described above, only it is preferred embodiment of the present utility model, not the utility model is imposed any restrictions, every
Any simple modification, change and the equivalent structure change made according to the utility model technical spirit to above example, still
Belong in the protection domain of technical solutions of the utility model.
Claims (7)
- A kind of 1. CT samples residual stress test device, it is characterised in that：CT examinations including base (1), on base (1) Sample (2) and the load maintainer that residual stress loading is carried out to the CT samples (2), the load maintainer include screw mandrel (3), installation Loaded on screw mandrel (3) and with the pin (9) of CT samples (2) cooperation and installed in one end of screw mandrel (3) and to CT samples (2) residual The loading screw rod (4) of residue stress, the quantity of the pin (9) is two, and the structure of two pins (9) is identical, the pin Nail (9) includes the rectangular portion being sleeved on screw mandrel (3) and the circle for being integrally formed and being located in CT samples (2) with the rectangular portion Bar portion, the CT samples (2) are nickel-based alloy sample or austenite stainless steel curved beam.
- 2. according to a kind of CT samples residual stress test device described in claim 1, it is characterised in that：On the base (1) Fix bar (5) is provided with, the bottom surface of the CT samples (2) and the upper side of base (1) are bonded to each other.
- 3. according to a kind of CT samples residual stress test device described in claim 1 or 2, it is characterised in that：The screw mandrel (3) The other end on be provided with angle dial (6), the angle dial (6) includes disk body (6-1) and installed in disk body (6-1) The pointer (6-2) at center, the pointer (6-2) are connected with screw mandrel (3).
- 4. according to a kind of CT samples residual stress test device described in claim 1 or 2, it is characterised in that：The CT samples (2) pin-and-hole (7) worn for the round bar portion is provided with, the quantity of the pin-and-hole (7) is two.
- 5. according to a kind of CT samples residual stress test device described in claim 1 or 2, it is characterised in that：The CT samples (2) pad (8) is provided between bottom and the rectangular portion, the pad (8) is sleeved in round bar portion.
- 6. according to a kind of CT samples residual stress test device described in claim 2, it is characterised in that：The fix bar (5) Including the first fix bar (5-1) being sleeved in CT samples (2) groove and the second fix bar for being arranged on CT samples (2) trailing flank (5-2), first fix bar (5-1) and the second fix bar (5-2) are installed on base (1).
- 7. according to a kind of CT samples residual stress test device described in claim 1 or 2, it is characterised in that：The loading spiral shell Bar (4) is arranged on one end of screw mandrel (3) by connector (10), and the loading screw rod (4) is connected with screw mandrel (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720566220.XU CN206725140U (en) | 2017-05-19 | 2017-05-19 | A kind of CT samples residual stress test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720566220.XU CN206725140U (en) | 2017-05-19 | 2017-05-19 | A kind of CT samples residual stress test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206725140U true CN206725140U (en) | 2017-12-08 |
Family
ID=60513581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720566220.XU Expired - Fee Related CN206725140U (en) | 2017-05-19 | 2017-05-19 | A kind of CT samples residual stress test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206725140U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021120373A1 (en) * | 2019-12-20 | 2021-06-24 | 清华大学 | Stress sensor and preparation method therefor |
-
2017
- 2017-05-19 CN CN201720566220.XU patent/CN206725140U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021120373A1 (en) * | 2019-12-20 | 2021-06-24 | 清华大学 | Stress sensor and preparation method therefor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104792611B (en) | Concrete compression bursting stress strain full curve test device | |
| CN106018044B (en) | Concrete direct tensile test test specimen, specimen molding mold and complexes | |
| CN103033374B (en) | Test device of vertical structure model of shield tunnel | |
| CN201477007U (en) | Fatigue test device for slender thin wall shaft | |
| CN110806360A (en) | Rotary fatigue tester for complex load | |
| CN204964447U (en) | A sweep and look into device for nuclear island channel bend | |
| CN203688355U (en) | Three-point bending test clamp for testing stress corrosion cracking speed rate | |
| CN206725140U (en) | A kind of CT samples residual stress test device | |
| CN103267617A (en) | Device for testing abutting and sealing performance of shield machine | |
| CN202614607U (en) | Simple and convenient hanging lug welding seam tension test device | |
| CN206002199U (en) | Acoustic signal sensor probe fixing device | |
| CN205910083U (en) | Dash smooth compound friction and wear test device | |
| CN108982242A (en) | A kind of cantilever type rotating bending in situ fatigue test machine using X-ray three-dimensional imaging | |
| CN209639693U (en) | A kind of piston rod concentric reducer oilhole synchronous measuring apparatus | |
| CN102998188A (en) | Lever-type semi-automatic valve rotation bending tester | |
| CN203551346U (en) | Test piece for energy release rate of twist mode of bonding interface | |
| CN204881930U (en) | Valve electric actuator pushes away, tensile test test bench | |
| CN206573287U (en) | A kind of loading device for peg non-proportional loading model test | |
| CN208187945U (en) | A kind of loading device for bond-slip properties test | |
| CN206074372U (en) | A kind of portable hardometer | |
| CN212082312U (en) | Continuous ultrasonic thickness measuring device | |
| CN204531179U (en) | With fining twisted steel and the pinned connection part of device for measuring force | |
| CN202939100U (en) | Lever-type semiautomatic valve rotating bending tester | |
| CN204666490U (en) | A kind of spring percussion mechanism measuring anchoring strength of coating | |
| CN220170724U (en) | Semi-arc sample centering fixture of impact testing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171208 Termination date: 20180519 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |