CN109142094A - It is a kind of for detecting the shear and method of magnetic pulse welding joint performance - Google Patents
It is a kind of for detecting the shear and method of magnetic pulse welding joint performance Download PDFInfo
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- CN109142094A CN109142094A CN201811087178.9A CN201811087178A CN109142094A CN 109142094 A CN109142094 A CN 109142094A CN 201811087178 A CN201811087178 A CN 201811087178A CN 109142094 A CN109142094 A CN 109142094A
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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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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- 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
- G01N2203/0014—Type of force applied
- G01N2203/0025—Shearing
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- 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
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
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Abstract
The present invention relates to a kind of for detecting the shear and method of magnetic pulse welding joint performance, belongs to Mechanics Performance Testing device and welding technology field, solves the problems, such as that existing shear cannot detect the intensity distribution of welding point join domain.The shear includes compression bar, pedestal, and pedestal is provided, in sequence from bottom to top, with compression block and sample locating plate；Compression block setting has the first through hole in the first aperture, and the setting of sample locating plate has second through-hole in the second aperture, and the first aperture is arranged concentrically less than the second aperture, first through hole and the second through-hole；First aperture is greater than the outer diameter of interior pipe fitting and is less than the outer diameter of outer tube member；The bar diameter of compression bar is less than the outer diameter of interior pipe fitting and is greater than the internal diameter of interior pipe fitting；Part of the compression block inner periphery beyond sample locating plate inner periphery is annular cut part；The shearing of welded specimen slice is completed in compression bar and cut part jointly.Shear and method of the invention is able to detect the intensity distribution situation of the join domain of welding point.
Description
Technical field
The present invention relates to Mechanics Performance Testing device and welding technology fields, more particularly to one kind to be used for detection magnetic impulse welding
Connect the shear of joint performance.
Background technique
In manufacturing fields such as aerospace, automobiles, minor diameter dissimilar material pipe part connection method demand increasingly increases,
As the liquified hydrogen and liquid fuel case pipeline of rocket engine system, aircraft gun bullet conduction band are connect with body, steering axles, noise elimination
Exhaust pipe, common rail fuel injection system etc..And magnetic pulse welding techniques are based on these demands and come into being, Fundamentals of Welding
It is similar with explosion weldering, it is the collision for generating powerful electromagnetic force between making metal to be welded by high-intensity magnetic field, and then keeping two metals fierce
Together, and a kind of solid-state Joining Technology combined between atom is realized.This welding process can only generate a little heat, Ke Yi
It largely reduces at weld interface and intermetallic compound occurs.Therefore this technology can be widely applied to of the same race and different
Kind of metal even metal and it is nonmetallic between connection, especially there is apparent advantage in tubing connection.
However, the axial magnetic field strength of actual welding workspace is unevenly distributed in magnetic pulse welding process, cause to weld
The practical region connected of connector is smaller than deformed region, the magnetic of the intensity distribution situation of welding point join domain for pipe part
The research of pulse welding technological parameter has important influence.In the case where appearance does not occur obvious breakage, it is difficult to which judgement connects
Head connection effect, this has bigger obstruction for the research of magnetic pulse welding pipe part, is unfavorable for the innovation of welding procedure
With development.
Currently, being stretching experiment for the detection means of the magnetic pulse welding joint mechanical property of pipe part, reversing in fact
It tests or peel test, but the use of these detection means is inadequate for those the base materials that the material is soft, and this
A little detection methods can only detect the integral strength of welding point, can not table for the intensity distribution situation of welding point join domain
Sign, even if the intensity point of the magnetic pulse welding join domain of pipe part can not be met using existing mechanics shearing test device
Cloth testing requirement.
Summary of the invention
In view of above-mentioned analysis, the present invention is intended to provide a kind of for detecting the shear of magnetic pulse welding joint performance
And method, to solve the problems, such as that existing shear is not able to satisfy the intensity distribution of the join domain of detection welding point.
The purpose of the present invention is mainly achieved through the following technical solutions:
It is a kind of for detecting the shear of magnetic pulse welding joint performance, including compression bar, pedestal, pedestal from bottom to top according to
It is secondary to be equipped with compression block and sample locating plate；Compression block setting has the first through hole in the first aperture, and the setting of sample locating plate has
Second through-hole in the second aperture, the first aperture are arranged concentrically less than the second aperture, first through hole and the second through-hole；First aperture is big
Outer diameter in interior pipe fitting and the outer diameter less than outer tube member；The bar diameter of compression bar is less than the outer diameter of interior pipe fitting and is greater than the interior of interior pipe fitting
Diameter；Second aperture is greater than the outer diameter of outer tube member；Part of the compression block inner periphery beyond sample locating plate inner periphery is annular shearing
Portion；Compression bar acts on interior pipe fitting, and cut part acts on outer tube member, and cutting for welded specimen slice is completed in compression bar and cut part jointly
It cuts.
Further, sample locating plate and compression block are fixed on the base by fixing bolt.
Further, fixing bolt at least two, and be symmetrically disposed on pedestal.
It further, further include the locating piece limited vertically to compression bar, locating piece setting has the of third aperture
Three through-holes, third aperture are equal with the bar diameter of compression bar.
Further, locating piece is fixedly connected by fixing bolt with pedestal.
Further, the both ends of locating piece are symmetrically arranged with semicircle limiting slot, the bolt capitiform of limiting slot and fixing bolt
Shape is adapted.
Further, the thickness of sample locating plate is greater than or equal to the thickness of welded specimen slice.
Further, pedestal is provided with material spilling hole.
On the other hand a kind of method for detecting magnetic pulse welding joint performance is provided, specifically using above-mentioned for detecting
The shear of magnetic pulse welding joint performance carries out the detection of magnetic pulse welding joint performance, comprising the following steps:
Step 1: compression block and sample locating plate are fixed on the base；
Step 2: welded specimen slice is placed on annular cut part, is fixed locating piece using fixing bolt, compression bar is logical
The third through-hole for crossing locating piece is against on welded specimen slice；
Step 3: entire shear is placed on almighty test machine, starts almighty test machine, electronic universal
The pressure head of testing machine acts directly on pressure on compression bar, will be in welded specimen slice under the collective effect of compression bar and cut part
Pipe fitting and outer tube member shearing separation, the final shearing strength and distribution characteristics for obtaining welding point region.
Further, individual components each other between the compression bar of shear, sample locating plate, compression block and locating piece, root
According to the corresponding component of size selection of pipe fitting welding connector to be detected.
The present invention has the beneficial effect that:
A) provided by the present invention for the shear of detection magnetic pulse welding joint performance, pipe fitting welding can both be tested
The block shear of connector can also test the bonding strength distribution situation of pipe fitting welding point axial direction, for pipe part
The research of magnetic pulse welding experiment has important scientific meaning, facilitates the innovation and development of welding technique.
B) provided by the present invention for the shear of detection magnetic pulse welding joint performance, each component can basis
The transformation of pipe fitting welding connector specific size, can satisfy the detection of multiple types pipe part, have extensive versatility.
C) method provided by the present invention for detecting magnetic pulse welding joint performance, it is easy to operate, it being capable of efficient quick
Test pipe fitting welding point axial direction bonding strength distribution situation.
It in the present invention, can also be combined with each other between above-mentioned each technical solution, to realize more preferred assembled schemes.This
Other feature and advantage of invention will illustrate in the following description, also, certain advantages can become from specification it is aobvious and
It is clear to, or understand through the implementation of the invention.The objectives and other advantages of the invention can by specification, claims with
And it is achieved and obtained in specifically noted content in attached drawing.
Detailed description of the invention
Attached drawing is only used for showing the purpose of specific embodiment, and is not to be construed as limiting the invention, in entire attached drawing
In, identical reference symbol indicates identical component.
Fig. 1 is the structural schematic diagram of the shear for detecting magnetic pulse welding joint performance of the invention；
Fig. 2 is the structure top view of the shear for detecting magnetic pulse welding joint performance of the invention；
Fig. 3 is the structure sectional view of the shear for detecting magnetic pulse welding joint performance of the invention；
Fig. 4 is the structure sectional view for the welding point that interior pipe fitting of the invention is tubular structure；
Fig. 5 is that interior pipe fitting of the invention is that club shaped structure connects joint structure cross-sectional view.
Appended drawing reference:
1, compression bar；2, compression bar locating piece；3, fixing bolt；4, sample locating plate；5, compression block；6, pedestal；7, welding examination
Sample slice；8, interior pipe fitting；9, outer tube member.
Specific embodiment
Specifically describing the preferred embodiment of the present invention with reference to the accompanying drawing, wherein attached drawing constitutes the application a part, and
Together with embodiments of the present invention for illustrating the principle of the present invention, it is not intended to limit the scope of the present invention.
Embodiment one
A specific embodiment of the invention discloses one kind and connects for detecting magnetic pulse welding as shown in Figure 1 to Figure 3
The shear of head performance, including compression bar 1, sample locating plate 4, compression block 5 and pedestal 6；Pedestal 6 is used to fixed entire shearing dress
It sets, pedestal 6 is provided, in sequence from bottom to top, with compression block 5 and sample locating plate 4, i.e. compression block 5 is located at 6 or more pedestal, sample positioning
Piece 4 is located at 5 or more compression block；The setting of compression block 5 has the first through hole in the first aperture, and the setting of sample locating plate 4 has second
Second through-hole in aperture, the first aperture are arranged concentrically less than the second aperture, first through hole and the second through-hole；First aperture is greater than interior
The outer diameter of pipe fitting 8 and the outer diameter for being less than outer tube member 9；The bar diameter of compression bar 1 is less than the outer diameter of interior pipe fitting 8 and is greater than the interior of interior pipe fitting 8
Diameter；Second aperture is greater than the outer diameter of outer tube member 9；5 inner periphery of compression block is cut beyond the part of 4 inner periphery of sample locating plate for annular
Cut portion；Compression bar 1 acts on interior pipe fitting 8, and cut part acts on outer tube member 9, and welded specimen slice is completed in compression bar 1 and cut part jointly
7 shearing.Wherein, the effect of cut part is embodied in two aspects, on the one hand cooperates with compression bar 1 and cuts to welded specimen slice 7
Cutting from, be on the other hand used to support welded specimen slice 7；Welded specimen slice 7 is generally cylindric, including 8 He of interior pipe fitting
Outer tube member 9, interior pipe fitting 8 are fixed on the inner wall of outer tube member 9 in such a way that magnetic field impulse welds, wherein interior pipe fitting 8 can be tubulose knot
Structure may be club shaped structure, and as shown in Fig. 4 to Fig. 5, when interior pipe fitting is club shaped structure, the internal diameter of interior pipe fitting is zero.
When implementation, before shearing experiment, compression block 5 and sample locating plate 4 are fixed on pedestal 6；By welded specimen
Slice 7 is placed in the second through-hole of sample locating plate 4, and the outer tube member 9 of welded specimen slice 7 is placed on annular cut part, is utilized
The other modes such as fixing bolt 3 or buckle are fixed by locating piece 2, and compression bar 1 is against welded specimen by the third through-hole of locating piece 2
On the interior pipe fitting 8 of slice 7；Entire shear is placed on almighty test machine, electronic universal testing machine, electronic universal examination are started
Compressing head is tested to act directly on pressure on compression bar 1, when under the collective effect of compression bar 1 and cut part by welded specimen slice 7
When interior pipe fitting 8 and 9 fracture separation of outer tube member, electronic universal testing machine stops load, the final shearing strength for obtaining welding point region
And distribution characteristics.
Compared with prior art, provided in this embodiment for detecting the shear of magnetic pulse welding joint performance, knot
Structure is simple, easy for assemble or unload, both using the shear provided in this embodiment for detecting magnetic pulse welding joint performance
The block shear of pipe fitting welding point can be tested, the bonding strength distribution feelings of pipe fitting welding point axial direction can also be tested
Condition has important scientific meaning for the research of pipe part magnetic pulse welding experiment, facilitates innovation and the hair of welding technique
Exhibition.In addition, each part of shear can be converted according to pipe fitting welding connector specific size, it can satisfy multiple types
The detection of pipe part has extensive versatility.
In the present embodiment, sample locating plate 4 and compression block 5 are fixed on the base, it is preferable that sample locating plate 4 and compression
Block 5 is fixed on the base by fixing bolt 3, fixing bolt 3 at least two, and be symmetrically disposed on pedestal 6, is guaranteed with this
The centre bore of 4 sample locating plates and 5 compression blocks is concentric.It can also be fixed by snap connection means, specifically, being pressurized
Fastening part is arranged in block 5, limiting unit is arranged on pedestal 6, the fastening part being arranged on compression block 5 and the limiting unit being arranged on pedestal 6 are matched
The fixation to realize compression block 5 Yu pedestal 6 is closed, likewise, sample locating plate 4 is fastened on compression block 5, to realize that sample is fixed
Bit slice 4 and compression block 5 are fixed on the base, and the above two mode that is fixedly connected is dismountable connection type, detachable to tie
Each component of the shear of structure is individual components, i.e. the compression bar 1 of shear, sample locating plate 4, compression block 5 and fixed
Individual components each other between the block 3 of position can select corresponding component according to the specific size of pipe fitting welding connector to be detected, can
Meet the detection of multiple types pipe part, there is extensive versatility.
In order to avoid the loss that falls of part, sample locating plate 4, compression block 5 one end be arranged by vertical shaft the bottom of at
On seat 6, sample locating plate 4, the other end of compression block 5 are fixed by fixing bolt 3 and pedestal 6, thus in continuous experiment process
In, it is not necessary to all components are disassembled, it is only necessary to screw by fixing bolt 3, stir sample positioning along vertical shaft
The fast quick-detach of shear can be realized in piece 4 and compression block 5, after replacing welding point, only need to stir sample along vertical shaft
Locating plate 4 and compression block 5, the other end of sample locating plate 4, compression block 5 is fixed by fixing bolt 3 and pedestal 6, it is convenient fast
Victory avoids part and falls loss, can also save experimental cost while shortening experimental period.Further, in order to test
Sample locating plate 4, compression block 5 and pedestal 6 are directly in close contact in the process, and the vertical shaft being arranged on pedestal 6 can be perpendicular
Histogram moves up a certain distance, is such as further fastened in such a way that screw thread screws, ensure that the work of shear
Make reliability.
In order to improve measuring accuracy and experimental rig reliability, shear further includes being limited vertically to compression bar 1
Locating piece 2, the setting of locating piece 2 have the third through-hole in third aperture, and third through-hole is arranged along the center of locating piece, third aperture
Equal with the bar diameter of compression bar 1, compression bar 1 can be against on welded specimen slice 7 by the third through-hole of locating piece 2, and can be
It is vertically moved in third through-hole, ensure that the power that compression bar 1 acts on welded specimen slice 7 is uniformly, to guarantee
Measuring accuracy, experimental result are relatively reliable.
In view of the effect of locating piece 2 is vertical confinement compression bar 1, therefore only need to guarantee that limited block keeps phase in the plane
There is following two to the mounting means of fixation, therefore locating piece 2, the first mounting means, the size and sample of locating piece 2
The size of locating plate 4 is identical, then the screw hole to match with fixing bolt 3 is arranged on locating piece 2, and locating piece 2 passes through fixed spiral shell
Bolt 3 is fixedly connected with sample locating plate 4 or pedestal 6, and in the first mounting means, the bolt head of fixing bolt 3 compresses locating piece 2
Upper surface, and locating piece 2 cannot vertical movement during test；The size of second of mounting means, locating piece 2 is fixed less than sample
The size of bit slice 4, the both ends of locating piece 2 are symmetrically arranged with semicircle limiting slot, the bolt head shapes phase of limiting slot and fixing bolt 3
It is adapted to, in second of mounting means, the first part of the bolt of fixing bolt 3 is located in the semicircle limiting slot of locating piece 2, locating piece
2 are mounted between the bolt head of two fixing bolts 3, play positioning action to compression bar 1, moving horizontally for locating piece 2 are limited, more
, can be along compression bar 1 from removing immediately above when changing welded specimen piece, second of mounting means, installing and dismounting is more convenient, simultaneously
Materials'use amount can also be reduced, production cost is reduced.
In order to promote the widespread popularity of shear, the thickness of sample locating plate 4 is greater than or equal to welded specimen slice 7
Thickness, guarantee welded specimen slice 7 be located at sample locating plate 4 central through hole in, i.e., welded specimen slice 7 thickness be less than
Longitudinal height of second through-hole of sample locating plate 4.Preferably, the thickness of sample locating plate 4 can be sliced 7 according to welded specimen
Thickness be adjusted, specifically, welded specimen slice 7 is composed of the identical slice of multi-sheet structure, it is thus possible to full
The test request of the welded specimen slice 7 of sufficient different height, application are more extensive.
In order to shorten the testing time, the generally hollow cylinder of pedestal 6 is provided with one among pedestal 6 and is used to miss to be cut
The material spilling hole of material is cut, the aperture of material spilling hole is greater than the first aperture of the first through hole of compression block 5, and compression block 5 can be placed in bottom
On seat 6, the shear of this structure can be carried out continuously multiple shearing experiment without moving repeatedly pedestal, and then save
The testing time is tested, testing efficiency is improved.
Embodiment two
Another specific embodiment of the invention discloses a kind of method for detecting magnetic pulse welding joint performance,
The shear for detecting magnetic pulse welding joint performance in embodiment one is specifically utilized to carry out magnetic pulse welding connector
It can detect, comprising the following steps:
Step 1: before shearing experiment, compression block 5 and sample locating plate 4 are fixed on pedestal 6, sample locating plate 4
It is combined between compression block 5 positioned at pedestal 6；
Step 2: welded specimen slice 7 is placed in the second through-hole of sample locating plate 4, the outer tube of welded specimen slice 7
Part 9 is placed on annular cut part, is fixed locating piece 2 using the other modes such as fixing bolt 3 or buckle, the number of fixing bolt 3
Amount at least there are two, and be symmetrical arranged；Compression bar 1 is against the interior pipe fitting 8 of welded specimen slice 7 by the third through-hole of locating piece 2
On, compression bar 1 can vertically move in the third through-hole of locating piece 2；
Step 3: entire shear is placed on almighty test machine, starts electronic universal testing machine, electronic universal test
Compressing head acts directly on pressure on compression bar 1, and compression bar 1 can transfer the pressure to 8 surface of interior pipe fitting of welded specimen slice 7,
Compression bar 1 pushes interior pipe fitting 8 to move down, and cut part can hinder outer tube member 9 to move down, and outer tube member 9 begins relative to compression block 5
Keep opposing stationary eventually, as the pressure that compression bar 1 acts on interior pipe fitting 8 is gradually increased, when the common work of compression bar 1 and cut part
With it is lower by welded specimen slice 79 fracture separation of interior pipe fitting 8 and outer tube member when, electronic universal testing machine stop load, finally welded
Connect the shearing strength and distribution characteristics of joint area.
In the present embodiment, the components of the shear utilized are mutually indepedent, i.e. compression bar 1, sample locating plate 4, compression
Individual components each other between block 5 and locating piece 3 can select corresponding portion according to the specific size of pipe fitting welding connector to be detected
Part.
Compared with prior art, the method provided by the present invention for detecting magnetic pulse welding joint performance, it is easy to operate,
High efficient and reliable can guarantee that experimental period can also be shortened while experimental precision, and method provided by the invention can both test
The block shear of pipe fitting welding connector can also test the bonding strength distribution situation of pipe fitting welding point axial direction, for
The research of pipe part magnetic pulse welding experiment has important scientific meaning, facilitates the innovation and development of welding technique.In addition,
Method provided by the invention is able to detect different type, no by selecting various sizes of shear components to be combined
With the property of welded joint of size pipe part, there is extensive versatility.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of for detecting the shear of magnetic pulse welding joint performance, including compression bar, pedestal, which is characterized in that described
Pedestal is provided, in sequence from bottom to top, with compression block and sample locating plate；
The compression block setting has the first through hole in the first aperture, and the sample locating plate setting has the second of the second aperture
Through-hole, first aperture are arranged concentrically less than the second aperture, the first through hole and the second through-hole；
First aperture is greater than the outer diameter of said inner tube part and is less than the outer diameter of outer tube member；
The bar diameter of the compression bar is less than the outer diameter of said inner tube part and is greater than the internal diameter of said inner tube part；
Second aperture is greater than the outer diameter of the outer tube member；
Part of the compression block inner periphery beyond the sample locating plate inner periphery is annular cut part；
The compression bar acts on interior pipe fitting, and the cut part acts on outer tube member, and the compression bar and the cut part are completed jointly
The shearing of welded specimen slice.
2. according to claim 1 for detecting the shear of magnetic pulse welding joint performance, which is characterized in that described
Sample locating plate and compression block are fixed on the base by fixing bolt.
3. according to claim 2 for detecting the shear of magnetic pulse welding joint performance, which is characterized in that described
Fixing bolt at least two, and be symmetrically disposed on the pedestal.
4. according to claim 2 for detecting the shear of magnetic pulse welding joint performance, which is characterized in that also wrap
The locating piece limited vertically to compression bar is included, the locating piece setting has the third through-hole in third aperture, the third hole
Diameter is equal with the bar diameter of the compression bar.
5. according to claim 4 for detecting the shear of magnetic pulse welding joint performance, which is characterized in that described
Locating piece is fixedly connected with the base by the fixing bolt.
6. according to claim 4 for detecting the shear of magnetic pulse welding joint performance, which is characterized in that described
The both ends of locating piece are symmetrically arranged with semicircle limiting slot, and the limiting slot is adapted with the bolt head shapes of the fixing bolt.
7. according to claim 1-6 for detecting the shear of magnetic pulse welding joint performance, feature
It is, the thickness of the sample locating plate is greater than or equal to the thickness of welded specimen slice.
8. according to claim 1-7 for detecting the shear of magnetic pulse welding joint performance, feature
It is, the pedestal is provided with material spilling hole.
9. a kind of method for detecting magnetic pulse welding joint performance, which is characterized in that described in any item using claim 1-8
Shear for detecting magnetic pulse welding joint performance carries out the detection of magnetic pulse welding joint performance, comprising the following steps:
Step 1: compression block and sample locating plate are fixed on the base；
Step 2: welded specimen slice is placed on the annular cut part, is fixed locating piece using fixing bolt, the pressure
Bar is against on the welded specimen slice by the third through-hole of the locating piece；
Step 3: entire shear is placed on almighty test machine, starts the almighty test machine, the electronics
The pressure head of universal testing machine acts directly on pressure on compression bar, will welding under the collective effect of the compression bar and the cut part
The interior pipe fitting of sample slice and outer tube member shearing separation, the final shearing strength and distribution characteristics for obtaining welding point region.
10. the method for detection magnetic pulse welding joint performance according to claim 9, which is characterized in that the shearing dress
Individual components each other between compression bar, sample locating plate, compression block and the locating piece set, according to the ruler of pipe fitting welding connector to be detected
The very little corresponding component of selection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811087178.9A CN109142094A (en) | 2018-09-18 | 2018-09-18 | It is a kind of for detecting the shear and method of magnetic pulse welding joint performance |
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| CN201811087178.9A CN109142094A (en) | 2018-09-18 | 2018-09-18 | It is a kind of for detecting the shear and method of magnetic pulse welding joint performance |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112748024A (en) * | 2020-12-29 | 2021-05-04 | 兰州理工大学 | In-situ measurement steel mechanical property micro-bending shear test device |
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