CN108225916A - A kind of welding bolt cold crack experimental rig - Google Patents
A kind of welding bolt cold crack experimental rig Download PDFInfo
- Publication number
- CN108225916A CN108225916A CN201810040922.3A CN201810040922A CN108225916A CN 108225916 A CN108225916 A CN 108225916A CN 201810040922 A CN201810040922 A CN 201810040922A CN 108225916 A CN108225916 A CN 108225916A
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- Prior art keywords
- connect
- welding
- bottom plate
- experimental rig
- bolt
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of welding bolt cold crack experimental rig, including mainframe box, supporting rack, experiment bottom plate, transmission system, loading system, measuring system and test controller；Support frame as described above is set at the top of the mainframe box, the experiment bottom plate is set at the top of support frame as described above, the welding hole on the experiment bottom plate is inserted on bolt coupon top, the bolt coupon bottom end is connect with the transmission system, the loading system, the measuring system and the test controller are set to inside the mainframe box, the loading system is connect with the transmission system, the measuring system is used to measure the size of loading force, the test controller respectively with the loading system, the measuring system connection, the test controller is also connect with a data processing centre；Welding bolt cold crack experimental rig provided by the invention can load, intelligentized control method, the quick accurate crack resistance for evaluating weld dimensions metal under different condition automatically.
Description
Technical field
The present invention relates to cold crack experimental rig technical fields, are tested and filled with bolt cold crack more particularly to a kind of welding
It puts.
Background technology
Weldability is to illustrate adaptability of the material to welding processing, refers to material (packet under certain welding condition
Include welding method, welding material, welding condition and structure type etc.), good welding point can be obtained, which connects
Head can reliability service when in use a kind of inherent characteristic.Welder author is frequently encountered some new materials, new knot
Structure or new process, always carry out weldability analysis and weldability test, and then fully grasp phase before putting into serial production
The solderability answered, prediction in the welding process there may be the problem of, preferable welding procedure is drafted out therefrom, to obtain
Good welding point.The test method of common weldability has:Weld dimensions metal cracking test, weld blowhole are quick
Perceptual experiment, sweating heat, stress simulation test, weld seam and connector fracture toughness, black brittleness and high-temperature behavior test, weld seam
And conventional mechanical property experiment of fatigue, dynamic test and weld seam and connector of connector etc..
Bolt cold crack is tested, and weldment is typically processed into cylindrical bolt coupon, and coupon upper end nearby adds
Work has annular or spiral shell v notch v, and coupon is inserted into the hole on experiment bottom plate, and the upper end of coupon is concordant with experiment backplate surface.Examination
When testing, one welding bead of deposition on experiment bottom plate, fusion penetration should be such that notch tip is located in the coarse grain zone of heat affected area, test bottom
Plate material should be consistent with studied material identical or both physical parameter.Postwelding loads when being cooled to 100-150 DEG C, through excessive
The critical cracking resistance stress of material under test conditions can be obtained in secondary loading.
At present, bolt cold crack is tested, although existing bolt testing machine performance substantially meets requirement, loading side
Formula is manual loading or semi-automatic loading, and the uncertain factor of introducing is larger, and overall intelligence degree is low, and test accuracy is not high.
Invention content
The object of the present invention is to provide a kind of welding bolt cold crack experimental rigs, exist to solve the above-mentioned prior art
The problem of, it can load automatically, weld dimensions metal is anti-under intelligentized control method, quick accurate evaluation different condition
Fragility.
To achieve the above object, the present invention provides following schemes：
The present invention provides a kind of welding bolt cold crack experimental rig, including mainframe box, supporting rack, experiment bottom plate, passes
Dynamic system, loading system, measuring system and test controller；Support frame as described above is set at the top of the mainframe box, the experiment
Bottom plate is set at the top of support frame as described above, and the welding hole on the experiment bottom plate, the bolt coupon are inserted into bolt coupon top
Bottom end is connect with the transmission system, and the loading system, the measuring system and the test controller are set to the master
Cabinet inside, the loading system are connect with the transmission system, and the measuring system is used to measure the size of loading force, described
Test controller is connect respectively with the loading system, the measuring system, the test controller also with a Data processing
The heart connects.
Preferably, the transmission system includes connecting rod, U-shaped connector and loaded member, the connecting rod bottom and the loading
System connects, and the U-shaped connector bottom is inserted at the top of the connecting rod and is hinged with the U-shaped connector, the loaded member includes
The bottom plate of bottom, the card adapter plate at top and the connection bottom plate and the side plate of the card adapter plate, the bottom plate are fixed on the U-shaped
At the top of connector, blocked hole is provided in the card adapter plate, the bolt coupon bottom end passes through the blocked hole and the clamping
Board connects.
Preferably, the blocked hole is the rectangle blocked hole of a side opening.
Preferably, the loading system includes servo controller, AC servo motor and plunger pump, the servo controller
It is connect with the AC servo motor, the AC servo motor is connect with the plunger pump, the plunger pump and the connecting rod
Connection；The servo controller is also connect with the test controller.
Preferably, the measuring system includes the load cell and electric time-keeping that are connect with the test controller
Device, the load cell are set between the plunger pump and the connecting rod, the power cord connection of the electronic timer
Between power supply and the experiment bottom plate, another power cord of the electronic timer is connected to the bolt coupon and the electricity
Between sub- timer.
Preferably, temperature control system is further included, the temperature control system includes thermocouple and the temperature control being connect with the thermocouple
Table, the thermocouple pass through the experiment bottom plate to be set to the welding hole side, and the temp controlled meter is set to the mainframe box
Interior, the temp controlled meter is connect with the test controller.
Preferably, the data processing centre includes data processor, display and base station, the data processor and institute
Display connection is stated, the data processor and the display are set at the top of the base station.
Preferably, welding machine and welder support are further included, the welding machine is set at the top of the welder support, the welding machine branch
Erection is placed in the mainframe box side.
The present invention achieves following advantageous effects relative to the prior art：
1st, welding bolt cold crack experimental rig provided by the invention, controls loading system to carry out by test controller
Loading, can realize and bolt coupon is automatically loaded, the parameter of loading is accurate, and test accuracy is higher.
2nd, welding bolt cold crack experimental rig provided by the invention, test controller are connect with data processing centre,
The data feedback that test controller obtains combines the electric time-keeping that can measure test period in real time to data processing centre
Device, in data handling the heart can observe force value curve graph in real time, experiment is convenient, fast.
3rd, welding bolt cold crack experimental rig provided by the invention, using servo variable displacement technology, servo motor consumption
Power it is identical with load, it is small to test the noise that generates in the process.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the present invention
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the dimensional structure diagram of welding bolt cold crack experimental rig in the present invention；
Fig. 2 is the broken section dimensional structure diagram that bottom plate is tested in the present invention；
Fig. 3 is the dimensional structure diagram of transmission system in the present invention；
In figure：1- mainframe boxes, 2- supporting racks, 3- experiments bottom plate, 4- transmission systems, 5- bolts coupon, 6- welding holes, 7- are stood
Column, 8- support plates, 9- fixtures, 10- connecting rods, 11-U shapes connector, 12- loaded members, 13- bottom plates, 14- card adapter plates, 15- side plates,
16- blocked holes, 17- thermocouples, 18- data processors, 19- displays, 20- base stations, 21- welding machines, 22- welder supports.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of welding bolt cold crack experimental rig, to solve of the existing technology ask
Topic.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is described in further detail.
The present embodiment provides a kind of welding bolt cold crack experimental rig, as shown in Figs. 1-3, including mainframe box 1, support
Frame 2, experiment bottom plate 3, transmission system 4, loading system, measuring system and test controller；Supporting rack 2 is set to mainframe box 1 and pushes up
Portion, experiment bottom plate 3 are set to 2 top of supporting rack, and the welding hole 6 on experiment bottom plate 3, bolt coupon 5 are inserted into 5 top of bolt coupon
Bottom end is connect with transmission system 4, and loading system, measuring system and test controller are set to inside mainframe box 1, loading system with
Transmission system 4 connects, and measuring system is used to measuring the size of loading force, test controller respectively with loading system, measuring system
Connection, test controller are also connect with a data processing centre.
In the present embodiment, supporting rack 2 specifically includes two columns 7 being symmetrically disposed on the top of mainframe box 1 and positioned at two
The support plate 8 at 7 top of column；Experiment bottom plate 3 is fixed on 8 top of support plate by fixture 9.
As shown in Figure 3, in the present embodiment, transmission system 4 includes connecting rod 10, U-shaped connector 11 and loaded member 12, connecting rod
10 bottoms are connect with loading system, and 10 top of connecting rod is inserted into 11 bottom of U-shaped connector and is hinged with U-shaped connector 11, connecting rod 10 and U
Shape connector 11 during loading is tested, can hingedly ensure the concentricity of connecting rod 10 and bolt coupon 5.Loaded member 12 has
Body includes the bottom plate 13 of bottom, the card adapter plate 14 at top and connecting bottom board 13 and the side plate of card adapter plate 14 15, bottom plate 13 are fixed on U
11 top of shape connector, 14 top of card adapter plate are provided with blocked hole 16, and 5 bottom end of bolt coupon passes through blocked hole 16 and card adapter plate 14
Clamping；The diameter of 5 bottom shackle portion of bolt coupon can be set greater than to the diameter at top, blocked hole in specific setting
16 could be provided as the rectangular opening of a side opening, and the diameter of the shackle portion of 5 bottom of bolt coupon is more than the width of blocked hole 16
Clamping can be realized, blocked hole 16 is set as a side opening, the dismounting of convenient bolt coupon 5 after the test.
In the present embodiment, loading system includes servo controller, AC servo motor and plunger pump, and servo controller is with handing over
Flow servo motor connects, and AC servo motor is connect with plunger pump, and plunger pump is connect with connecting rod 10；Servo controller also with experiment
Controller connects；In test test controller control servo controller, servo controller control AC servo motor, exchange are watched
The instruction that motor receives servo controller is taken, driving plunger pump changes revolution so as to change output oil mass, and then controls plunger pump
In piston movement velocity, piston connect with connecting rod 10, and then realizes the control to the active force of bolt coupon 5.
Measuring system in the present embodiment includes the load cell and electronic timer that are connect with test controller, surveys
Force snesor is set between plunger pump and connecting rod 10, for measuring the active force of plunger pump offer, an electricity of electronic timer
Source line is connected between power supply and experiment bottom plate 3, and another power cord of electronic timer is connected to bolt coupon 5 and electric time-keeping
Between device, i.e., bolt coupon 5 is the power switch of electronic timer；During on-test, loading system is started to work, at this time electronics
Timer is energized state, starts timing, and when bolt coupon 5 is pulled off, two power cords of electronic timer disconnect, electronics
Stop during timer；Electronic timer stores accurate entire test period at this time；The loading force that load cell measures
With the real-time time of electronic timer, data processing centre is fed back to by test controller, force value curve can be observed in real time
Figure.
In the present embodiment, temperature control system is further included, temperature control system includes thermocouple 17 and the temperature control being connect with thermocouple 17
Table, thermocouple 17 pass through experiment bottom plate 3 to be set to 6 side of welding hole, and temp controlled meter is set in mainframe box 1, temp controlled meter and experiment
Controller connects；During experiment, experiment bottom plate 3 on fixed one welding bead of heat input deposition after, temperature control system start to work,
Thermocouple 17 detect temperature for 100-150 DEG C when, loading system start to work, carry out load test.
Data processing centre in the present embodiment includes data processor 18, display 19 and base station 20, data processor
18 connect with display 19, and data processor 18 and display 19 are set to 20 top of base station, and data processor 18 is used to handle
The data of feedback can show real-time force value curve graph on display 19, conveniently observe and record.
This implementation further includes welding machine 21 and welder support 22, and welding machine 21 is set to 22 top of welder support, welder support 22
It is set to 1 side of mainframe box；Welding machine 21 is used to test on bottom plate 3 with fixed one welding bead of heat input deposition.
Welding bolt cold crack experimental rig provided in this embodiment, specific experiment process are：First, in experiment bottom plate
With fixed one welding bead of heat input deposition on 3, at this point, temperature control system is started to work, thermocouple 17 detects temperature as 100-
At 150 DEG C, loading system is started to work, and is pulled down bolt coupon 5 by connecting rod 10 and transmission system 4, is carried out load test；Loading
Electronic timer starts timing while system starts, and loading system persistently loads, when 5 weld of bolt coupon is pulled off
When, two power cords of electronic timer disconnect, and electronic timer timing stops；Experiment terminates, and electronic timer stores at this time
Accurate entire test period；Entirely the real-time force value curve graph during experiment is shown on the display 19, at this time
The critical cracking resistance stress of the material under corresponding experimental condition is obtained, the state that also can obtain cold crack under different loading environments is inclined
To.
It should be noted that U-shaped connector is not limited only to the U-shaped limited in the present invention, concrete structure energy in the present invention
Enough realize is hinged with connecting rod；The blocked hole set in card adapter plate is also not limited to rectangle blocked hole, and specific production can be selected
Select the blocked hole for any shape that can block bolt coupon.
The principle of the present invention and embodiment are expounded invention applies specific case, above example is said
The bright method and its core concept for being merely used to help understand the present invention；Meanwhile for those of ordinary skill in the art, foundation
The thought of the present invention, in specific embodiments and applications there will be changes.To sum up, the content of the present specification should not manage
It solves as limitation of the present invention.
Claims (8)
1. a kind of welding bolt cold crack experimental rig, it is characterised in that：Including mainframe box, supporting rack, experiment bottom plate, transmission
System, loading system, measuring system and test controller；Support frame as described above is set at the top of the mainframe box, the experiment bottom
Plate is set at the top of support frame as described above, and the welding hole on the experiment bottom plate, the bolt coupon bottom are inserted into bolt coupon top
End is connect with the transmission system, and the loading system, the measuring system and the test controller are set to the host
Inside case, the loading system is connect with the transmission system, and the measuring system is used to measure the size of loading force, the examination
Controller is tested to connect with the loading system, the measuring system respectively, the test controller also with a data processing centre
Connection.
2. welding bolt cold crack experimental rig according to claim 1, it is characterised in that：The transmission system includes
Connecting rod, U-shaped connector and loaded member, the connecting rod bottom are connect with the loading system, and the U-shaped is inserted at the top of the connecting rod
Connector bottom is hinged with the U-shaped connector, and the loaded member is included described in the bottom plate of bottom, the card adapter plate at top and connection
The side plate of bottom plate and the card adapter plate, the bottom plate are fixed at the top of the U-shaped connector, and clamping is provided in the card adapter plate
Hole, the bolt coupon bottom end are clamped by the blocked hole and the card adapter plate.
3. welding bolt cold crack experimental rig according to claim 2, it is characterised in that：The blocked hole is side
The rectangle blocked hole of opening.
4. welding bolt cold crack experimental rig according to claim 3, it is characterised in that：The loading system includes
Servo controller, AC servo motor and plunger pump, the servo controller are connect with the AC servo motor, the exchange
Servo motor is connect with the plunger pump, and the plunger pump is connect with the connecting rod；The servo controller also with the experiment
Controller connects.
5. welding bolt cold crack experimental rig according to claim 4, it is characterised in that：The measuring system includes
The load cell and electronic timer being connect with the test controller, the load cell are set to the plunger pump
Between the connecting rod, a power cord of the electronic timer is connected between power supply and the experiment bottom plate, the electronics
Another power cord of timer is connected between the bolt coupon and the electronic timer.
6. welding bolt cold crack experimental rig according to claim 1, it is characterised in that：Further include temperature control system,
The temperature control system includes thermocouple and the temp controlled meter being connect with the thermocouple, and the thermocouple passes through the experiment bottom plate to set
The welding hole side is placed in, the temp controlled meter is set in the mainframe box, and the temp controlled meter connects with the test controller
It connects.
7. welding bolt cold crack experimental rig according to claim 1, it is characterised in that：The data processing centre
Including data processor, display and base station, the data processor is connect with the display, the data processor and institute
Display is stated to be set at the top of the base station.
8. welding bolt cold crack experimental rig according to claim 1, it is characterised in that：Further include welding machine and welding machine
Stent, the welding machine are set at the top of the welder support, and the welder support is set to the mainframe box side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810040922.3A CN108225916A (en) | 2018-01-16 | 2018-01-16 | A kind of welding bolt cold crack experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810040922.3A CN108225916A (en) | 2018-01-16 | 2018-01-16 | A kind of welding bolt cold crack experimental rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108225916A true CN108225916A (en) | 2018-06-29 |
Family
ID=62641072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810040922.3A Pending CN108225916A (en) | 2018-01-16 | 2018-01-16 | A kind of welding bolt cold crack experimental rig |
Country Status (1)
| Country | Link |
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| CN (1) | CN108225916A (en) |
Citations (6)
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-
2018
- 2018-01-16 CN CN201810040922.3A patent/CN108225916A/en active Pending
Patent Citations (6)
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|---|---|---|---|---|
| CN200979543Y (en) * | 2006-07-06 | 2007-11-21 | 中国石油天然气管道局 | A bolt testing machine |
| CN201069427Y (en) * | 2007-08-01 | 2008-06-04 | 合肥通用机械研究院 | Bolt tester with heating device |
| CN103837398A (en) * | 2014-02-25 | 2014-06-04 | 合肥通用机械研究院 | Bolt test determination method for quenching and tempering high-strength steel reheat crack sensitive temperature |
| CN103983520A (en) * | 2014-05-30 | 2014-08-13 | 西安交通大学 | Single-motor multi-way implant test machine |
| CN204241312U (en) * | 2014-11-25 | 2015-04-01 | 浙江吉利控股集团有限公司 | Air-brake coupling hose tensile test fixture |
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| Title |
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| 张建勋 等: "插销试验机计算机控制与分析系统开发", 《航空制造技术》 * |
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