CN107160109A - A kind of method of aluminum steel dissimilar metal rivet welding composite joint - Google Patents
A kind of method of aluminum steel dissimilar metal rivet welding composite joint Download PDFInfo
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- CN107160109A CN107160109A CN201710478340.9A CN201710478340A CN107160109A CN 107160109 A CN107160109 A CN 107160109A CN 201710478340 A CN201710478340 A CN 201710478340A CN 107160109 A CN107160109 A CN 107160109A
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- rivet
- steel plate
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- head
- riveting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1225—Particular aspects of welding with a non-consumable tool
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/1255—Tools therefor, e.g. characterised by the shape of the probe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
- B23K2103/20—Ferrous alloys and aluminium or alloys thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention provides a kind of method of aluminum steel dissimilar metal rivet welding composite joint.The invention provides a kind of method of aluminum steel dissimilar metal rivet welding composite joint：Preboring is carried out in the lap-joint of aluminium sheet and steel plate to be connected, prebored hole is obtained；Rivet is penetrated into the prebored hole, makes the head of a nail end face of rivet and the flush of aluminium sheet, the other end of rivet is higher than surface of steel plate；Carried out first to described with the needleless stirring-head of rotation higher than surface of steel plate rivet and pushed, the end face of needleless stirring-head is contacted with surface of steel plate；Then proceed by second to push, rivet is formed countersunk head die in steel plate.The present invention can obtain the riveting of aluminum steel dissimilar metal and the composite joint joint of Diffusion Welding, joint produces excessive weld metal zone brittle intermetallic thing when solving the weldering of aluminum/steel dissimilar melt material, the riveting shortcoming that center tap seal is bad, fatigue behaviour is poor, the two-fold advantage of riveting and welding is realized, joint tensile strength and fatigue behaviour is added.
Description
Technical field
The present invention relates to metal material processing technical field, more particularly to a kind of aluminium-steel dissimilar metal rivet welding composite joint
Method.
Background technology
With automobile, the development of airplane industry, to light-weighted requirement also more and more higher.In structured design process, optimization
Structure and selection light material become mitigate construction weight significant design thinking, therefore dissimilar metal connection by more next
More it is widely applied, such as applies the connection of wide aluminium alloy and high-strength steel in the automotive industry, in type aircraft design
In, for increase aircraft structure strength, fatigue life is improved, while mitigate aircraft weight, it is a large amount of to use high-strength steel and light-alloy material
Expect composite construction.But can cause a large amount of weld metal zone brittle intermetallic things because melting welding heat input is excessive during the connection of foreign material
Generation, influence joint performance, therefore riveting technology is widely used in the connection of foreign material.
Poor because traditional hammer riveting and pressure-riveting process are complicated, outward appearance is molded at present, efficiency is low and is not easy to be automated,
Occur in that electromagnetic riveting and self-pierce riveting technology.Electromagnetism riveting is to utilize primary coil and secondary coil and amplification in electromagnetic equipment
Device and modulator, operationally primary coil and secondary coil produce powerful eddy current magnetism, form powerful impulsive force, and with
The form of stress wave is propagated, and stress wave is propagated and by reflection and refraction, rivet can be made complete in the extremely short time in the amplifier
Into plastic deformation, compared to traditional riveting, electromagnetic riveting loading speed is high, joint fatigue long lifespan, while can also rivet common
Riveting is difficult to the material riveted.But electromagnetic rivetter is expensive, use cost is high, because Electromagnetic riveting technology is newer, on
The technical study of electromagnetism riveting is not also very ripe.Self-pierce riveting is a kind of newer riveting technology, and its principle is：Drift promotes real
Heart rivet is moved downward, and the cutting edge of rivet bottom will rivet material pressurization, and rivet reaches stop motion after cavity plate, with drift
Continue traveling downwardly, rivet is occurred plastic deformation and is inwardly made Radial Flow, it is tightly encased rivet, form stable locking shape
State.This technique need not carry out drilling processing to sheet material, rivet efficiency high, and easily realize automation.Current self-pierce riveting
Subject matter is easily embrittlement occur during the not high material of some toughness of connection, while needing the species according to riveting material thick
The different mould of degree design.
Current riveting is also simply simple to be mechanically connected, and national patent CN105290608A discloses a kind of rivet
Formula mechanically connects auxiliary aluminum/steel foreign material agitating friction bridging method, to solve to connect between existing aluminum/steel dissimilar metal
Using both brittle intermetallic compounds of easy reaction generation in soldering or fusion process, and during agitating friction weldering overlap joint
Joint loaded area is small, the problem of slackening aluminum/steel dissimilar joint bearing capacity.Method：First, the edge on the lap width B of steel plate
Longitudinal centre line bores row's prebored hole；2nd, by steel plate with aluminium sheet contact surface and surrounding is cleaned out, and removes steel plate and aluminium sheet
Oxide on surface；3rd, the surface of steel plate and aluminium sheet is wiped using organic solvent or cleaning agent；4th, with fixture by aluminium sheet and steel plate
It is fixed, in stir friction welding process, stirring-head and aluminium sheet friction, the prebored hole that the aluminium of softening flows downward on filling steel plate,
The attachment structure of rivet type is formed, so as to acquire aluminium/steel agitating friction lap joint through mechanically connecting reinforcing.This method
Rivet need not be added, is flowed to using the aluminium of plasticity and riveting is formed in steel.This riveting technology subject matter is to utilize softening
Aluminium fill prebored hole downwards, it is necessary to increase volume under pressure, so upper plate impression can be caused deeper, influence joint performance and attractive in appearance,
Can exist there is also lower filled gold category simultaneously and fill insufficient grade for filling defect.
The content of the invention
It is an object of the invention to provide a kind of method of aluminium-steel dissimilar metal rivet welding composite joint.What the present invention was provided
Joint produces excessive weld metal zone brittle intermetallic thing when method solves aluminium and steel foreign material fusion welding, and cold punching causes in riveting
Cracking, the poor shortcoming of fatigue behaviour, the two-fold advantage with riveting and welding adds joint tensile strength and fatigability
Energy.
The invention provides a kind of method of aluminium-steel dissimilar metal rivet welding composite joint, comprise the following steps：
(1) preboring is carried out in the lap-joint of aluminium sheet and steel plate to be connected, obtains prebored hole；
(2) rivet is penetrated into the prebored hole, makes the head of a nail end face of rivet and the flush of aluminium sheet, the other end of rivet
Higher than surface of steel plate；
(3) carried out first to described with the needleless stirring-head of rotation higher than surface of steel plate rivet and pushed, make needleless stirring-head
End face contacted with surface of steel plate；Then proceed by second push after carry out friction welding (FW).
It is preferred that, the aperture of prebored hole is 4~8mm in the step (1).
It is preferred that, the material of rivet is aluminium alloy in the step (2).
It is preferred that, coordinate in the step (2) between rivet and prebored hole for gap.
It is preferred that, rivet is higher than 2~6mm of surface of steel plate in the step (2).
It is preferred that, the end face diameter of needleless stirring-head is 2~3 times of rivet diameter in the step (3).
It is preferred that, the end face of needleless stirring-head has matrix lines in the step (3).
It is preferred that, the speed of rotation is 800~2000r/min in the step (3).
It is preferred that, the second depth pushed is 0.1~0.3mm in the step (3).
It is preferred that, the time of friction welding (FW) is 10~120s in the step (3).
The invention provides a kind of method of aluminium-steel dissimilar metal rivet welding composite joint, comprise the following steps：To be connected
Aluminium sheet and steel plate lap-joint carry out preboring, obtain prebored hole；Rivet is penetrated into the prebored hole, makes the head of a nail end face of rivet
With the flush of aluminium sheet, the other end of rivet is higher than surface of steel plate；It is higher than steel plate table to described with the needleless stirring-head of rotation
Face rivet carries out first and pushed, and the end face of needleless stirring-head is contacted with surface of steel plate；Then proceed by second push it is laggard
Row friction welding (FW).The present invention utilizes needleless stirring-head and rivet and upper slab by riveting and agitating friction weldering Composite Joining Technique
The frictional heat of plate, realizes aluminium/steel diffusion connection of end face overlay area, while under pressure expanding the rivet of plasticizing
The gap between rivet and pre-punched hole is filled with afterwards, and rivet plasticizing in top is pressed into upper plate, forms countersunk head die, solve
Joint produces excessive weld metal zone brittle intermetallic thing when aluminum/steel dissimilar melt material is welded, and riveting center tap seal is bad, fatigue
The shortcoming of poor-performing, realizes the two-fold advantage of riveting and welding, adds joint tensile strength and fatigue behaviour.Experimental result
Show, the connector peak shear strength that the method that the present invention is provided is obtained is 12.96kN, the joint obtained than directly riveting is strong
Degree 8.58kN improves 51%, is 4.0kN in fatigue load, during stress ratio R=0.1, and the conventional rivet connection joint fatigue life-span is 7.9
×104, compound riveting joint fatigue is 1.2 × 106, two orders of magnitude of fatigue life raising.
Brief description of the drawings
Fig. 1 is rivet welding compound connection structure schematic diagram in the present invention；
1 is needleless stirring-head in figure, and 2 be steel plate, and 3 be rivet, and 4 be aluminium sheet；
Fig. 2 is structural representation after the completion of rivet welding composite joint in the present invention.
Embodiment
The invention provides a kind of method of aluminium-steel dissimilar metal rivet welding composite joint, comprise the following steps：
(1) preboring is carried out in the lap-joint of aluminium sheet and steel plate to be connected, obtains prebored hole；
(2) rivet is penetrated into the prebored hole, makes the head of a nail end face of rivet and the flush of aluminium sheet, the other end of rivet
Higher than surface of steel plate；
(3) carried out first to described with the needleless stirring-head of rotation higher than surface of steel plate rivet and pushed, make needleless stirring-head
End face contacted with surface of steel plate；Then proceed by second push after carry out friction welding (FW).
The present invention carries out preboring in the lap-joint of aluminium sheet and steel plate to be connected, obtains prebored hole.In the present invention, it is described
The aperture of prebored hole is preferably 4~8mm, more preferably 5~7mm, most preferably 6mm.Operation of the present invention to the preboring does not have
There is special restriction, using the technical scheme of drilling well known to those skilled in the art, such as entered using electric drill or drilling machine
Row drilling.
In the present invention, the prebored hole of the aluminium sheet outer surface preferably has the counter sink with rivets.The present invention is right
The shape of the counter sink does not have special restriction, is adjusted according to the head of a nail shape of rivet.
The present invention does not have special restriction to the thickness of the aluminium sheet and steel plate, using aluminium well known to those skilled in the art
Plate and steel plate.In the present invention, the thickness of the aluminium sheet and steel plate is preferably independently 2~5mm, more preferably 3~
4mm.In the present invention, the material of the aluminium sheet is preferably pure aluminum or aluminum alloy.In the present invention, the material of the steel plate is preferred
For carbon steel or steel alloy；The surface of steel plate more preferably includes zinc coat, i.e. galvanized steel；The zinc coat makes under stirring end surface
Diffusion connection it is more preferable.
After the completion of preboring, aluminium sheet and surface of steel plate to be connected are cleared up described in preferred pair of the present invention.The present invention is to described
The operation of cleaning is without special restriction, using the technical scheme of removing surface well known to those skilled in the art.At this
In invention, the cleaning preferably includes deburring, polishing and cleaned successively.Operation of the present invention to the deburring be not special
Restriction, using the technical scheme of deburring well known to those skilled in the art.In the present invention, the deburring makes riveting
Between nail and prebored hole, formed and preferably coordinated between aluminium sheet and steel plate.In the present invention, the polishing is preferred to use sand paper,
More preferably 400# sand paper.In the present invention, the cleaning is preferably to be wiped with acetone.In the present invention, it is described to polish and clear
It can be plate surface light to wash, and remove the oxide layer and greasy dirt on surface.
Obtain after prebored hole, rivet is penetrated the prebored hole by the present invention, makes head of a nail end face and the surface of aluminium sheet of rivet
Concordantly, the other end of rivet is higher than surface of steel plate.In the present invention, the material of the rivet is preferably aluminium alloy, more preferably
2xxx series or 7xxx series alloys, most preferably 2A14 aluminium alloys or 7A04 aluminium alloys.In the present invention, the 2A14 aluminium
Alloy or 7A04 aluminium alloys have higher intensity, can further improve switching performance.
In the present invention, it is preferably that gap coordinates between the rivet and prebored hole.In the present invention, the rivet is straight
Footpath is preferably 4~8mm, more preferably 5~7mm, most preferably 6mm.In the present invention, the gap, which coordinates, makes rivet easily wear
Enter prebored hole.In the present invention, the rivet is preferably above 2~6mm of surface of steel plate, more preferably 3~5mm, is most preferably
4mm。
The present invention is preferably cleaned the rivet using preceding.The present invention is to the operation of the cleaning without special
Limit, using the technical scheme of cleaning well known to those skilled in the art.In the present invention, described clean is preferably：Will
Rivet is put into the sodium hydroxide solution that mass concentration is 25~35% and taken out after 25~35s；It is 8~12% to be then placed in concentration
Take out, clear water is rinsed, then dried up again with after alcohol wipe after 8~12s in the solution of nitric acid.
Rivet is penetrated after the prebored hole, and the aluminium sheet, steel plate and rivet are preferably carried out clamping by the present invention.The present invention is right
The operation of the clamping is without special restriction, using installation way well known to those skilled in the art.For convenience of stirring
The operation of friction welding (FW), the present invention preferably according to aluminium sheet under, steel plate carries out clamping in upper mode.
Rivet welding compound connection structure schematic diagram of the present invention is as shown in Figure 1.After the completion of clamping, the present invention is stirred with the needleless of rotation
Mix head to push higher than surface of steel plate rivet progress first to described, the end face of needleless stirring-head is contacted with surface of steel plate；Then
Proceed second push after carry out friction welding (FW).In the present invention, the end face diameter of the needleless stirring-head is preferably that rivet is straight
2~3 times of footpath；More preferably 6~18mm, most preferably 12mm.In the present invention, the end face of the needleless stirring-head preferably has
There is matrix lines.The present invention does not have special restriction to the shape and density of the matrix lines, can increase stirring end surface
Friction.The present invention does not have special restriction to the species of the needleless stirring-head, is known using those skilled in the art
Friction stir welding machine stirring-head.In the present invention, the material of the needleless stirring-head be preferably high-temperature alloy steel or
Hard alloy.
In the present invention, the speed of the rotation is preferably 800~2000r/min, more preferably 1000~1800r/
Min, most preferably 1200~1600r/min.The present invention does not have special restriction to first speed pushed, using ability
Speed is pushed known to field technique personnel.In the present invention, described first push during, when the stirring-head contact riveting
After nail, the speed that pushes is preferably 1.5~2.5mm/min, more preferably 2mm/min.In the present invention, described first push
Pressure be preferably 5000~15000N, more preferably 8000~12000N, most preferably 10000N.In the present invention, it is described
During first pushes, under needleless stirring-head pressure and friction heat effect, the rivet of plasticizing is upsetting expansion, filling rivet and
Gap between prebored hole, and rivet top is pressed into steel plate, form countersunk head die.
After the end face of needleless stirring-head is contacted with surface of steel plate, the present invention makes the needleless stirring-head of rotation proceed second
Push.In the present invention, described second to push speed be preferably 1.5~2.5mm/min, more preferably 2mm/min.In the present invention
In, second pressure pushed is preferably 5000~15000N, more preferably 8000~12000N, most preferably 10000N.
In the present invention, second depth pushed is preferably 0.1~0.3mm, more preferably 0.2mm.
The present invention stops pushing after the completion of described second pushes, and carries out friction welding (FW).In the present invention, the friction welding (FW)
Time be preferably 10~120s, more preferably 20~40s.In the present invention, in the friction welding process, in needleless stirring-head
End face is connected with foring diffusion on the aluminium below steel plate friction region/steel interface.Workpiece structure after the completion of rivet welding composite joint
Schematic diagram is as shown in Figure 2.
The present invention is acted on using needleless stirring-head and rivet and the frictional heat of steel plate in frictional heat and stirring-head pressure
Under, the aluminium rivet of plasticizing is upsetting, and is filled with the gap between rivet and pre-punched hole, and rivet plasticizing in top is pressed into upper plate,
Form countersunk head die, it is to avoid the purely mechanic connection of riveted joint, without metallurgical binding, the problem of seal is bad and riveting
The poor shortcoming of cracking, fatigue behaviour caused by middle cold punching；Stirring aluminium/steel of below end surface and upper plate friction area simultaneously
Diffusion connection is formd on interface, metal is non-fusible, and joint produces excessively crisp when solving aluminium and steel foreign material fusion welding
The problem of property intermetallic compound；Two-fold advantage with riveting and welding, adds joint tensile strength and fatigue behaviour.
In order to further illustrate the present invention, aluminium-steel dissimilar metal rivet welding that the present invention is provided is answered with reference to embodiment
The method for closing connection is described in detail, but they can not be interpreted as into limiting the scope of the present invention.
Embodiment 1:
The thick 2A14 aluminium alloys of 4mm are cut into the sheet material of 100mm × 40mm × 4mm specification sizes first, it is same to choose
Galvanized steel plain sheet thick 2mm cuts into the sample to be welded of 100mm × 40mm × 2mm sizes, is bored with a diameter of 4mm drill bit in riveting point
Hole, in steel plate bottom burr-drill shape counter sink, with 400# sand paper polishing interface, while being carried out clearly to drilling burr with file
Reason, is finally cleaned with acetone butt joint；
The rivet with taper die cleaned is penetrated from below, rivet bar is 2A14 aluminium alloys, rivet bottom
Flushed with lower plate bottom, top is higher by upper face 4mm, clamping is to be welded；
Press-in is rotated using the stirring-head without mixing needle of 12mm diameter end faces, Rotating speed is 1500r/min,
When stirring end surface is contacted with upper plate, then 0.2mm is pushed, it is to complete welding to keep 30s.
Rivet welding composite joint sample is stretched using stretching-machine, fracture occurs at interface, and shear fracture occurs for rivet,
Peak shear strength is 6.53kN, and the joint tension of conventional rivet connection shearing is only 4.39kN, is welded using agitating friction riveting
To composite-joint than it is single riveting weldering strength of joint improve 48.7%；It is 2.5kN, stress ratio R=0.1 in fatigue load
When, the conventional rivet connection joint fatigue life-span is 5.2 × 104, compound riveting joint fatigue is 9.2 × 105, fatigue life raising one
The order of magnitude.
Embodiment 2:
The thick 2A14 aluminium alloys of 4mm are cut into the sheet material of 100mm × 40mm × 4mm specification sizes first, it is same to choose
Galvanized steel plain sheet thick 2mm cuts into the sample to be welded of 100mm × 40mm × 2mm sizes, is bored with a diameter of 6mm drill bit in riveting point
Hole, in steel plate bottom burr-drill shape counter sink, with 400# sand paper polishing interface, while being carried out clearly to drilling burr with file
Reason, is finally cleaned with acetone butt joint；
The rivet with taper die cleaned is penetrated from below, rivet bar is 7A04 aluminium alloys, rivet bottom
Flushed with lower plate bottom, top is higher by upper face 4mm, clamping is to be welded；
Press-in is rotated using the stirring-head without mixing needle of 16mm diameter end faces, Rotating speed is 1500r/min,
When stirring end surface is contacted with upper plate, then 0.2mm is pushed, weld interval is 30s.
Welded specimen is stretched using stretching-machine, fracture occurs at interface, and shear fracture, maximum shear occur for rivet
Intensity is 12.96kN, and 51% is improved than directly riveting obtained strength of joint 8.58kN；It is 4.0kN, stress in fatigue load
During than R=0.1, the conventional rivet connection joint fatigue life-span is 7.9 × 104, compound riveting joint fatigue is 1.2 × 106, fatigue life
Improve two orders of magnitude.
As can be seen from the above embodiments, the joint when method that the present invention is provided solves the weldering of aluminum/steel dissimilar melt material
Produce excessive weld metal zone brittle intermetallic thing, the riveting shortcoming that center tap seal is bad, fatigue behaviour is poor, realize riveting and
The two-fold advantage of welding, adds joint tensile strength and fatigue behaviour.
Described above is only the preferred embodiment of the present invention, not makees any formal limitation to the present invention.Should
Point out, for those skilled in the art, under the premise without departing from the principles of the invention, if can also make
Dry improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of method of aluminium-steel dissimilar metal rivet welding composite joint, comprises the following steps：
(1) preboring is carried out in the lap-joint of aluminium sheet and steel plate to be connected, obtains prebored hole；
(2) rivet is penetrated into the prebored hole, makes the head of a nail end face of rivet and the flush of aluminium sheet, the other end of rivet is higher than
Surface of steel plate；
(3) carried out first to described with the needleless stirring-head of rotation higher than surface of steel plate rivet and pushed, make the end of needleless stirring-head
Face is contacted with surface of steel plate；Then proceed by second push after carry out friction welding (FW).
2. according to the method described in claim 1, it is characterised in that the aperture of prebored hole is 4~8mm in the step (1).
3. according to the method described in claim 1, it is characterised in that the material of rivet is aluminium alloy in the step (2).
4. the method according to claim 1 or 3, it is characterised in that between being between rivet and prebored hole in the step (2)
Gap coordinates.
5. according to the method described in claim 1, it is characterised in that rivet is higher than 2~6mm of surface of steel plate in the step (2).
6. according to the method described in claim 1, it is characterised in that the end face diameter of needleless stirring-head is in the step (3)
2~3 times of rivet diameter.
7. the method according to claim 1 or 6, it is characterised in that the end face of needleless stirring-head has in the step (3)
Matrix lines.
8. according to the method described in claim 1, it is characterised in that the speed of rotation is 800~2000r/ in the step (3)
min。
9. according to the method described in claim 1, it is characterised in that in the step (3) the second depth pushed be 0.1~
0.3mm。
10. the method according to claim 1 or 9, it is characterised in that in the step (3) time of friction welding (FW) be 10~
120s。
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| CN201710478340.9A CN107160109B (en) | 2017-06-22 | 2017-06-22 | A kind of method of aluminium-steel dissimilar metal rivet welding composite joint |
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| CN201710478340.9A CN107160109B (en) | 2017-06-22 | 2017-06-22 | A kind of method of aluminium-steel dissimilar metal rivet welding composite joint |
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| CN108838543B (en) * | 2018-07-09 | 2020-09-29 | 大连理工大学 | Welding-riveting composite connection method for metal material and resin-based composite material |
| CN112739486A (en) * | 2018-09-26 | 2021-04-30 | 日本制铁株式会社 | Joining structure, joining method, and automotive member |
| CN109202247A (en) * | 2018-10-26 | 2019-01-15 | 湖北工业大学 | A kind of welding method of aluminium alloy and steel |
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| CN109623133B (en) * | 2019-01-03 | 2020-11-24 | 南昌航空大学 | Bolt-enhanced friction stir spot welding method suitable for titanium-aluminum heterogeneous material |
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| CN113692328A (en) * | 2019-04-19 | 2021-11-23 | 松下知识产权经营株式会社 | Joint structure |
| CN110242128A (en) * | 2019-06-06 | 2019-09-17 | 湖北航宇精工科技有限公司 | A kind of no riveter vehicle door bonnet lock and its manufacture craft |
| CN110654035A (en) * | 2019-09-26 | 2020-01-07 | 沈阳航空航天大学 | Rivet welding process method for in-situ friction stir forming of composite rivet |
| TWI723841B (en) * | 2020-04-09 | 2021-04-01 | 財團法人金屬工業研究發展中心 | Friction stir welding assembly and friction stir welding method |
| CN114378421A (en) * | 2020-10-21 | 2022-04-22 | 上海汽车集团股份有限公司 | Welding method for metal pieces with different hardness and welded product of metal pieces with different hardness |
| CN113482999A (en) * | 2021-07-05 | 2021-10-08 | 航天精工股份有限公司 | High-strength rivet resistant to high temperature and corrosion and easy to rivet and manufacturing method thereof |
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