CN110340515A - A kind of method and device of the weldering of multiple spot agitating friction and the soldering of multiple spot agitating friction - Google Patents
A kind of method and device of the weldering of multiple spot agitating friction and the soldering of multiple spot agitating friction Download PDFInfo
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- CN110340515A CN110340515A CN201910516610.XA CN201910516610A CN110340515A CN 110340515 A CN110340515 A CN 110340515A CN 201910516610 A CN201910516610 A CN 201910516610A CN 110340515 A CN110340515 A CN 110340515A
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- 238000005476 soldering Methods 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000003466 welding Methods 0.000 claims abstract description 121
- 238000003756 stirring Methods 0.000 claims abstract description 96
- 229910000679 solder Inorganic materials 0.000 claims abstract description 57
- 238000009826 distribution Methods 0.000 claims abstract description 9
- 238000005553 drilling Methods 0.000 claims abstract description 7
- 238000003801 milling Methods 0.000 claims abstract description 7
- 239000011324 bead Substances 0.000 claims description 17
- 230000033001 locomotion Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 abstract description 20
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 230000001788 irregular Effects 0.000 abstract description 3
- 239000010949 copper Substances 0.000 description 26
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 14
- 229910052802 copper Inorganic materials 0.000 description 14
- 229910052782 aluminium Inorganic materials 0.000 description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 10
- 229910020816 Sn Pb Inorganic materials 0.000 description 8
- 229910020922 Sn-Pb Inorganic materials 0.000 description 8
- 229910008783 Sn—Pb Inorganic materials 0.000 description 8
- 210000001519 tissue Anatomy 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000004411 aluminium Substances 0.000 description 5
- 238000005219 brazing Methods 0.000 description 5
- 244000309464 bull Species 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000003321 amplification Effects 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 3
- 241001124569 Lycaenidae Species 0.000 description 3
- 235000014987 copper Nutrition 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 241000345998 Calamus manan Species 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
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- 238000012795 verification Methods 0.000 description 1
Classifications
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses the method and devices of a kind of weldering of multiple spot agitating friction and the soldering of multiple spot agitating friction.Driving multi-shaft device to drive simultaneously by drilling machine or milling machine, multiple stirring-heads are stirred friction spot welding to base material and/or friction stir spot is brazed, for similar solder joint, it can guarantee quality of welding spot, and distribution shape irregular complex component less for solder joint, welding times can be reduced or even be once soldered all solder joints, avoid frequently mobile and dismounting；When the driving head of base material adapted mobile work platform or multi-shaft device moves, the agitating friction weldering and/or agitating friction soldering of multi-pass also can be achieved at the same time.The present invention is simple, economic, practical, small to the scrap build investment of production unit, can realize industrial application rapidly, and at double or 3 times are improved production efficiency with Shangdi, improves welding quality, reduces human cost.
Description
Technical field
The present invention relates to the methods and realization device of multiple spot friction stir spot welding and the soldering of multiple spot friction stir spot.
Background technique
Compared with traditional resistor spot welding, the friction stir spot welding (FSSW:friction that is invented by Kawasaki, Japan company
Stir spot welding) technique for film aluminum product overlap joint spot welding when, have and save electric energy, avoid frequently replacing electrode
Obvious advantage (document 1), but required fraction time is up to several seconds (usually 5~10s), the energization much larger than resistance spot welding adds
The hot time.Friction stir spot is brazed (FSSB:friction stir spot brazing) patented technology and uses needleless tool, no
But the pin hole of traditional friction stir spot welding is eliminated, also extending single-point soldering area, (the soldering area of FSSW is annular in shape, and FSSB
Soldering area be in disc-shaped, and diameter is close to shaft shoulder diameter, document 2,3), but asks there is also required fraction time is longer
Topic.Longer fraction time affects production efficiency.
In friction stir spot welding (FSSW) and friction stir spot soldering (FSSB), the longer reason of fraction time is caused to exist
It is all smaller in the diameter of the stirring-head shaft shoulder used, cause stirring-head linear velocity smaller, rate of heat production is slow, and therefore, fraction time is prolonged
It is long.For set material and plate thickness, the thinking for shortening fraction time has two, first is that increasing stirring-head shaft shoulder diameter；Second is that increasing
Big motor speed.But the thinking for increasing stirring-head shaft shoulder diameter is limited by Workpiece structure design, also heat input can be made excessive, caused
Crystal grain overheat or intermetallic compound are blocked up.And equipment investment will increase using high-revolving motor.
It is brazed (FSSB) gradation welding using friction stir spot welding (FSSW), friction stir spot, needs frequently to adjust base material
Position, and stirring-head is repeatedly adjusted, it is placed in solder joint under stirring-head, affects production efficiency (for example, for strip and not
Multiple solder joints on the base material of regular shape).And more seriously, when successively completing each solder joint, first welding position sets the pricker of (solder joint)
Material or other tissues are spread to rear welding position and are set, and cause the performance of weld seam at adjacent two solder joint difference occur, have seriously affected multiple spot
Agitating friction weldering and agitating friction soldering welding quality, meanwhile, also result in subsequent each solder joint actually required weld interval without
Method effectively controls.
2017, the M.Mahadeva Swamy of India was to improve Al/Steel friction stir spot welding intensity, proposes and stirs
Mix friction multiple spot welding (Friction stir multi spot welding) technique (document 4).Its used tool is still tradition
Single head band needle stirring-head, weld three points in one section short welding bead different location, but the shaft shoulder coverage area of three points has certain weight
Folded amount, expands total bonding area of " friction stir spot welding " with this, although in this way using " friction stir spot welding " technique,
It is similar to the result of agitating friction seam weld that solder joint links up the welding bead to be formed.The agitating friction that M.Mahadeva Swamy is proposed is more
Three steps of spot-welding technology point: (1) rubbing extrusion (Friction surfacing), that is, uses aluminum perishable tool, Al is passed through
Extrusion rub in (grooved mild steel) in the slot that mild steel is opened in advance；(2) friction forging and stamping (Friction forming), i.e.,
Make extrusion more densified in the aluminium layer of steel surface；(3) agitating friction multiple spot welding (Friction stir multi spot
Welding), i.e., the region that al deposition layer is covered on slot is successively implemented in different location thin with non-expendable single head tool
Spot welding between aluminium sheet/deposited aluminum layer.It the advantage is that using non-expendable cone point tool, significantly increase in deposition
Contact area and deposition of aluminum between aluminium (aluminium of fluting deposition bottom early period) and top aluminium sheet can preferably be compacted steel
Surface.But complicated welding procedure be adapted it can not with actual multi-point welding task.
Bibliography
[1] liana photoproduction, ancient congratulatory letter, A Bei Nai Jinmei, assistant rattan is abundant, and the rich friction stir spot engagement In in powder river obtains ら
6061 ア Le ミ ニ ウ system alloy of the れ stirring histological self-criticism in field welds association's collection of thesis, 2007,25 (4): 553-
559.
[2]Guifeng Zhang,Linjie Zhang,Changwei Kang,Jianxun Zhang.Development
of friction stir spot brazing(FSSB).Materials and Design,2016,94:502–514.
[3] Zhang Guifeng, Kang Changwei, Ni Xianqing, Cai Jie are a kind of to overlap combined friction stir spot soldering for sheet metal
Method .ZL 2,014 1 0440848.6 [P] .2014-09-01；2017-02-01.
[4]M.Mahadeva Swamy,S.Muthukumaran1,K.Kiran1.A Study on Friction Stir
Multi Spot Welding Techniques to Join Commercial Pure Aluminum and Mild Steel
Sheets.Trans Indian Inst Met,2017,70(5):1221–1232.
Summary of the invention
It is brazed (FSSB) to improve friction stir spot welding (FSSW) and friction stir spot and is being applied to more solder joints, multi-pass weldering
Production efficiency when business is taken over, drives multiple stirring tool head spin frictions simultaneously using multi-shaft device the invention proposes a kind of
The method and device of the weldering of multiple spot agitating friction and the soldering of multiple spot agitating friction.
In order to achieve the above objectives, the invention adopts the following technical scheme:
A kind of multiple spot friction stir welding method (more solder joints), the friction stir welding method the following steps are included:
For the non-overlapping multiple bond pad locations of friction area, using multiple stirring tool heads (abbreviation stirring-head) right
It answers bond pad locations while being stirred friction spot welding or friction stir spot soldering.
Preferred weld mode one (multiple spot friction stir spot welding, multi-spot FSSW), i.e., the described Friction Stir Welding side
Method specifically includes the following steps:
1) input terminal of driving spindle and multi-shaft device is connected；
2) by mutually independent multiple stirring-heads (for example, with needle tool) respectively with multiple output shafts of the multi-shaft device
(i.e. the sub- axis of torque output) is correspondingly connected with；
3) start the driving spindle, using the multi-shaft device while driving the multiple stirring-head rotary motion, and
Corresponding bond pad locations are stirred friction spot welding (for example, bond pad locations welding is specified directly on base material) simultaneously.
Preferred weld mode two (soldering of multiple spot friction stir spot, multi-spot FSSB), i.e., the described Friction Stir Welding
Method specifically includes the following steps:
1) input terminal of driving spindle and multi-shaft device is connected；
2) mutually independent multiple stirring-heads (for example, needleless or with needle tool) is multiple defeated with the multi-shaft device respectively
Shaft is correspondingly connected with；
3) in each bond pad locations preseting solder (for example, by sheet, powdered or brazing wire, referring to discoid equal friction
Region shape, places and is fixed between upper and lower plates) start the driving spindle afterwards, using described in the multi-shaft device simultaneously drive
Multiple stirring-head rotary motions, and it is stirred friction point soldering (for example, upper plate welding) simultaneously in corresponding bond pad locations.
Preferred weld mode three, i.e., the described friction stir welding method specifically includes the following steps:
1) input terminal of driving spindle and multi-shaft device is connected；
2) mutually independent multiple stirring-heads are correspondingly connected with multiple output shafts of the multi-shaft device respectively；
3) start the driving spindle after a part of bond pad locations preseting solder wherein, utilize the multi-shaft device while band
The multiple stirring-head rotary motion is moved, and is stirred friction spot welding or friction stir spot soldering simultaneously in corresponding bond pad locations
(what i.e. a portion bond pad locations carried out is friction stir spot soldering, and what another part bond pad locations carried out is agitating friction
Spot welding).
Preferably, the tool that the driving spindle is selected from drilling machine, milling machine, the electric machine main shaft of lathe or friction stir welding machine drives
Moving axis.
Preferably, the step 2) of each welding manner is further comprising the steps of: adjustment multi-shaft device corresponds to the opposite position of output shaft
Set and spacing, so that stirring-head is corresponding with the distribution of bond pad locations, wherein the center of the friction area of any two stirring-head away from
More than or equal to the shaft shoulder diameter of stirring-head (in the case where friction area is not overlapping, the friction areas of two stirring-heads closer to,
The quality for being formed by welding point is higher, homogeneity is better).
Preferably, the shaft shoulder diameter of the stirring-head is 12mm~18mm, and speed of agitator is 950r/min~1180r/
Min, fraction time are 5s~8s.
A kind of multiple spot friction stir welding method (multi-pass), comprising the following steps:
For the non-overlapping multiple welding bead positions of friction area, since one end of corresponding welding bead position, utilization is multiple
Stirring-head carries out continuous friction stir spot welding or friction stir spot soldering in corresponding welding bead position simultaneously, until obtaining corresponding
Multiple complete welding beads.
Three of the above preferred weld mode is equally applicable to the welding method (multi-pass), rubs to continuously stir
Spot welding or friction stir spot soldering are wiped, the welding bench for placing base material can be moved along welding bead extending direction or moves driving master
Multiple solder joints in welding bead position are connected as complete welding bead by axis.
A kind of multiple spot Friction Stir Welding device including main shaft, the welding bench being oppositely arranged with main shaft and is located at
The multi-shaft device by main shaft drives between welding bench and main shaft is correspondingly arranged on phase on multiple output shafts of the multi-shaft device
Mutual independent stirring-head, relative position and distance (distribution of i.e. each stirring-head) and more solder joint weld tasks between each stirring-head
Bond pad locations or multi-pass weld task welding bead position it is corresponding.
Preferably, the relative position between the stirring-head and distance can be by being arranged in exporting on multi-shaft device with corresponding
The connected wheel disc of axis carries out free adjusting；The main shaft or welding bench can be moved along welding bead extending direction.
The beneficial effects of the present invention are embodied in:
The present invention carries out multiple spot friction stir spot welding to base material using multiple synchronously driven stirring-heads and/or multiple spot stirs
Friction point soldering, the think of for utilizing " bull multiple spot " friction stir spot welding proposed and " bull multiple spot " friction stir spot to be brazed
Road realizes to multiple solder joints or multiple passages while being stirred the efficient production of friction welding (FW) or agitating friction soldering, shortens
The average weld interval of single solder joint in more solder joints, multi-pass weld task, single passage, improve welding quality.
The present invention forms multiple spot Friction Stir Welding equipment using multi-shaft device and main shaft and stirring-head, ensure that multiple spot stirs
Friction spot welding and multiple spot friction stir spot soldering processes can be simple, economical the welding for realizing more solder joints, multi-pass, contracting
Short weld interval improves welding quality.
Further, to reduce equipment cost, using multiple the stirring of the electric machine main shaft driving dispersion of drilling machine, milling machine, lathe
Mix head.
Detailed description of the invention
Fig. 1 is multiple spot friction stir spot brazing device schematic diagram.
Fig. 2 is the connection schematic diagram of multi-shaft device and electric machine main shaft (drilling machine or milling machine).
Fig. 3 is that stirring-head position (a), (b) adjustment and stirring-head install (c) schematic diagram.
Fig. 4 is the assembling schematic diagram of preseting solder and base material: the tubulose Sn-Pb soft solder for including scaling powder is coiled into spiral shell
Rotation shape is preset at two to solder joint, and plate-like welding wire is folded between sheet copper after two pieces of sheet copper overlap joint assembly.
Fig. 5 is while carrying out postwelding copper sheet the appearance of a sample (speed of mainshaft 1045r/ of Cu/Cu two point friction stir spot soldering
min；Fraction time 5s；Two needleless stirring-head shaft shoulder diameter 15mm): postwelding copper sheet sample point soldering places observe Sn-Pb
Soft solder is smoothly melted and is squeezed out.
Fig. 6 is the two point friction stir spot soldered fitting macro morphology and microstructure of fraction time 5s.
Fig. 7 is while carrying out postwelding copper sheet the appearance of a sample (speed of mainshaft 1045r/ of Cu/Cu two point friction stir spot soldering
min；Fraction time 8s；Two needleless stirring-head shaft shoulder diameter 15mm): postwelding copper sheet sample point soldering places observe Sn-Pb
Soft solder is smoothly melted and is squeezed out.
Two point friction stir spot soldered fitting macro morphology (smooth) and the microstructure (interface that Fig. 8 is fraction time 8s
Densification, alloying): two solder joints can be taken into account, two solder joint tissues are nearly identical.
Fig. 9 is needleless stirring-head schematic diagram used in (soldering of Cu/Cu two point friction stir spot) in embodiment.
The two point friction stir spot that Figure 10 is fraction time 8s is brazed the microcosmic of friction area center (i.e. center of friction area)
Tissue: (a) 2000 times of microstructure is amplified in the center of friction area of left-hand point soldering, (b) the center of friction area of left-hand point soldering
The microstructure of 4000 times of amplification, (c) 2000 times of microstructure, (d) right-hand point are amplified by the center of friction area of right-hand point soldering
Amplify 4000 times of microstructure in the center of friction area of soldering；Boundary moisture is good, and brazed seam is fine and close.
The two point friction stir spot that Figure 11 is fraction time 8s is brazed position (i.e. non-friction zone) between two friction points
Microstructure: (a) 2000 times of microstructure is amplified in the non-friction zone among copper sheet, (b) the non-friction zone amplification among copper sheet
4000 times of microstructure；Boundary moisture is good, and brazed seam is fine and close.
The two point friction stir spot that Figure 12 is fraction time 5s is brazed the microcosmic of friction area center (i.e. center of friction area)
Tissue: (a) 1000 times of microstructure is amplified in the center of friction area of left-hand point soldering, (b) the center of friction area of left-hand point soldering
The microstructure of 2000 times of amplification, (c) 2000 times of microstructure, (d) right-hand point are amplified by the center of friction area of right-hand point soldering
Amplify 4000 times of microstructure in the center of friction area of soldering；Boundary moisture is good, and brazed seam is fine and close.
The two point friction stir spot that Figure 13 is fraction time 5s is brazed the microcosmic of friction area edge (i.e. friction edges area)
Tissue: (a) 1000 times of microstructure is amplified in the friction edges area of left-hand point soldering, (b) the friction edges area of right-hand point soldering
The microstructure of 2000 times of amplification；Elimination original gap is realized in most of welding section.
Figure 14 is that the two point friction stir spot of fraction time 5s is brazed the microstructure of position between two friction points: big portion
Elimination original gap has been realized in point welding section.
In figure: 1- motor, 2- main shaft, 3- multi-shaft device, 4- axis, 5- stirring-head, 6- base material, 7- fixture, 8- sleeve, 9- cone
Handle driving shaft, 10- rectangle key, 11- keyway, 12- wheel disc, 13- locking nut.
Specific embodiment
The present invention is described in further details with reference to the accompanying drawings and examples.
(1) multiple spot friction stir spot welding and multiple spot friction stir spot are brazed
The present invention be directed to traditional friction stir spot welding in the presence of can only carry out single-point welding and influence production efficiency deficiency (when
Production efficiency is lower when fraction time is longer), it proposes while carrying out bull multiple spot friction stir spot welding (multi-spot FSSW)
Or the efficient process of bull multiple spot friction stir spot soldering (multi-spot FSSB) is carried out simultaneously.
1, technique process
(1) the installation connection of multi-shaft device and electric machine main shaft: the multi-shaft device being continuously adjusted using the sub- distance between axles of torque output,
It is matched by " key " (or key in the connecting shaft of electric machine main shaft institute band) on electric machine main shaft 2 with " keyway " on multi-shaft device 3,
Achieve the purpose that dispersion transmitting 1 torque of motor.
(2) installation of stirring-head: after base material 6 is fixed on workbench using fixture 7, referring to the point to be welded on base material 6
It sets, each independent stirring-head 5 (with needle tool or needleless tool) is installed on to each sub- axis 4 of multi-shaft device torque output
On, obtain the multi-bit mixture friction of " one drag two (1 main shaft drives 2 stirring-head synchronous rotaries) " or " one drags three " etc
Welding equipment (referring to Fig. 1).
(3) welding while bull multiple spot: starting motor 1 after main shaft 2 rotates, while driving multiple stirring-heads 5 also together
Rotary motion carries out multiple spot friction stir spot welding (multi-spot FSSW) simultaneously using multiple band needle tools；Or preseting solder
Afterwards, then using needleless tool the soldering of multiple spot friction stir spot (multi-spot FSSB) is carried out simultaneously.
2, example is welded
Two point stirring is carried out simultaneously to 2mm thickness copper sheet (combination of Cu/Cu overlap joint, the preset soft solder in interface) using multi-shaft device to rub
Wipe point soldering:
(1) installation of multi-shaft device and stirring-head: (model ZX32) installs multi-shaft device (ST108, Shuangzi axis on drilling and milling machine
Multi-shaft device, the theoretical adjustable extent of Shuangzi axis distance of shaft centers: 25mm-125mm), rotating ratio 1:1 in specific installation process, will be connected
The top of axis (taper shank driving shaft 9) arrow direction along Fig. 2 be packed into it is in main shaft and fixed, by multi-shaft device upper end keyway 11 with
The rectangle key 10 of connecting shaft lower end connects, and the sleeve 8 on motor head is embedded in multi-shaft device upper end, to make the torque of main shaft
It can be exported through two sub- axis；It is threadedly coupled on two sub- axis of multi-shaft device and coaxially fixes two needleless stirring-heads；Stirring
Head material is 45 steel, and upper surface diameter of phi 25mm, the high 5mm in side cylindrical surface (side always a height of 25mm), lower surface (i.e. the shaft shoulder) is straight
Diameter Φ 15mm (referring to Fig. 9).
(2) base material and solder: base material is two pieces of sheet coppers (25mm × 60mm × 2mm)；Solder is the pipe for including scaling powder
Shape Sn-Pb soft solder silk is coiled the solder wire of long 110mm, diameter 1mm spiral；It is placed between two pieces of sheet coppers, two
The solder joint center of circle is at a distance of 30mm；Two pieces of sheet coppers and solder are using overlap joint assembly method (Cu/Sn-Pb/Cu, referring to fig. 4), after coiling
Solder be folded between sheet copper.
(3) clamping and welding: the sheet copper assembled is fixed on workbench, coiling has under the position and stirring-head of solder
Surface face, the relative position of two stirring-heads and the wheel disc 12 (diameter 50mm) on rotation, multi-axis device are adjusted, and are adjusted
Fixed wheel disc 12 (referring to Fig. 3) with locking nut 13 after whole, Manual operation handle makes main shaft that stirring-head be driven to push and contact
Copper sheet surface is continuously applied certain pressure as friction pressure, and two sub- axis revolving speeds are identical as the speed of mainshaft: 1045r/min；The shaft shoulder
For the steel needleless tool that diameter is Φ 15mm only in upper copper sheet mantle friction, choosing fraction time is respectively 5s and 8s.
(4) appearance and Interface Microstructure metallographic examination: its microscopic appearance is observed with scanning electron microscope (SEM).Gained knot
Fruit is following (referring to Fig. 5, Fig. 6, Fig. 7, Fig. 8):
Appearance forming: surface is relatively smooth, and impression is shallow, and forming is good.
Interface Microstructure: solder smoothly melts, and boundary moisture is good, and low-intensity Sn-Pb soft solder is extruded, Cu/Cu
Between realize close contact soldering.
Compared with the 5s that rubs, it is wide to spread range for Sn-Pb brazing filler metal melts outside fraction time 8s institute plumb joint, or even can be by boundary
Face is swashed to upper panel surface, and contact angle is significantly less than 90 degree, shows that wetting is good.The tissue of two solder joints almost,
Interface Microstructure is even more ideal, does not occur the point of soldering difference: the not only side of the central dense (see Figure 10) of friction area, friction area
Edge is also fine and close, and even on the position between two solder joint friction areas, solder can also soak copper sheet up and down very well (see Figure 11).
Referring to Figure 12, Figure 13 and Figure 14, Sn-Pb solder also can smoothly melt outside fraction time 5s institute plumb joint, connect
Feeler is significantly less than 90 degree, and wetting is good.Almost, Interface Microstructure is ideal for the tissue of two solder joint central areas, rubs
The central dense in region is wiped, the edge of friction area is also fine and close, and the position between two solder joint friction areas, solder also smoothly melts
Change, but compactness is poor.
Through multiple case verifications, the present invention can at double or even 3 times are improved production efficiency with Shangdi.
In addition, the present invention is brazed (FSSB) compared to traditional friction stir spot welding (FSSW) and friction stir spot, for position
Similar solder joint is set, first welding position is avoided and sets and brought influence is set on rear welding position, it is ensured that the homogeneity of quality of welding spot；For
Solder joint is less and the complex component of shape special (solder joint distribution is irregular), even can be primary by adjusting sub- axis relative position
All solder joints are soldered, mobile and dismounting is avoided frequently, it, can be more efficiently hence for strip and irregular base material
Welding.For example, the present invention can be in advance by bond pad locations distribution (as being distributed) in Five-pointed star, rotation, multi-axis device wheel disk is stirred with adjusting
The relative position (front and back is staggered, spacing is all adjustable side by side) of head is mixed, it is disposable complete after multiple stirring-heads (such as 5) deploy
At the welding for all solder joints for being in staggered distribution and (being not distributed side by side).
(2) when adapted mobile work platform or removable motor head, technique can also be achieved while carry out in above (one)
The weldering of multiple tracks agitating friction is brazed with multiple tracks agitating friction.
In short, driving multi-shaft device to drive multiple stirring-heads to be stirred friction spot welding to base material simultaneously by drilling machine or milling machine
And/or friction stir spot soldering, for similar solder joint, it is ensured that quality of welding spot, it is less for solder joint and distribution shape is not advised
Complex component then can reduce welding times or even once be soldered all solder joints, avoid frequently mobile and dismounting；Base material adapted moves
When the driving head of dynamic workbench or multi-shaft device is removable, the agitating friction weldering and/or stirring that multi-pass also can be achieved at the same time rub
Wipe soldering.Apparatus of the present invention are constituted and simple process, economic, practical, small to the investment of production unit scrap build, can be real rapidly
Existing industrial application, greatly improves production efficiency, improves welding quality, reduces human cost.
Claims (10)
1. a kind of multiple spot friction stir welding method, it is characterised in that: the friction stir welding method the following steps are included:
For the non-overlapping multiple bond pad locations of friction area, using multiple stirring-heads (5) corresponding bond pad locations simultaneously into
Row friction stir spot welding or friction stir spot soldering.
2. a kind of multiple spot friction stir welding method according to claim 1, it is characterised in that: the Friction Stir Welding side
Method specifically includes the following steps:
1) driving spindle (2) is connect with the input terminal of multi-shaft device (3)；
2) multiple output shafts by mutually independent multiple stirring-heads (5) respectively with the multi-shaft device (3) are correspondingly connected with；
3) start the driving spindle (2), drive the multiple stirring-head (5) rotary motion simultaneously using the multi-shaft device (3),
And it is stirred friction spot welding simultaneously in corresponding bond pad locations.
3. a kind of multiple spot friction stir welding method according to claim 1, it is characterised in that: the Friction Stir Welding side
Method specifically includes the following steps:
1) driving spindle (2) is connect with the input terminal of multi-shaft device (3)；
2) multiple output shafts by mutually independent multiple stirring-heads (5) respectively with the multi-shaft device (3) are correspondingly connected with；
3) start after each bond pad locations preseting solder the driving spindle (2), using described in the multi-shaft device (3) simultaneously drive
Multiple stirring-head (5) rotary motions, and it is stirred friction point soldering simultaneously in corresponding bond pad locations.
4. a kind of multiple spot friction stir welding method according to claim 1, it is characterised in that: the Friction Stir Welding side
Method specifically includes the following steps:
1) driving spindle (2) is connect with the input terminal of multi-shaft device (3)；
2) multiple output shafts by mutually independent multiple stirring-heads (5) respectively with the multi-shaft device (3) are correspondingly connected with；
3) start the driving spindle (2) after a part of bond pad locations preseting solder wherein, simultaneously using the multi-shaft device (3)
The multiple stirring-head (5) rotary motion is driven, and is stirred friction spot welding or agitating friction simultaneously in corresponding bond pad locations
Point soldering.
5. according to a kind of multiple spot friction stir welding method of claim 2,3 or 4, it is characterised in that: the driving spindle
(2) tool driving shaft selected from drilling machine, milling machine, the electric machine main shaft of lathe or friction stir welding machine.
6. according to a kind of multiple spot friction stir welding method of claim 2,3 or 4, it is characterised in that: the step 2) is also
The following steps are included: relative position and the spacing of the corresponding output shaft of adjustment multi-shaft device (3), so that stirring-head (5) and bond pad locations
Distribution it is corresponding, wherein the center of the friction area of any two stirring-head (5) is straight away from the shaft shoulder for being more than or equal to stirring-head (5)
Diameter.
7. a kind of according to claim 1, the multiple spot friction stir welding method of 2,3 or 4, it is characterised in that: the stirring-head
(5) shaft shoulder diameter is 12mm~18mm, and speed of agitator is 950r/min~1180r/min, and fraction time is 5s~8s.
8. a kind of multiple spot friction stir welding method, it is characterised in that: the following steps are included:
Multiple stirrings are utilized since one end of corresponding welding bead position for the non-overlapping multiple welding bead positions of friction area
Head (5) carries out continuous friction stir spot welding or friction stir spot soldering in corresponding welding bead position simultaneously, until obtaining corresponding
Multiple complete welding beads.
9. a kind of multiple spot Friction Stir Welding device, it is characterised in that: including main shaft (2), the welding being oppositely arranged with main shaft (2)
Workbench and the multi-shaft device (3) driven by main shaft (2), are correspondingly arranged on multiple output shafts of the multi-shaft device (3) mutually
Independent stirring-head (5), the distribution of each stirring-head (5) and the bond pad locations of more solder joint weld tasks or multi-pass weld task
Welding bead position is corresponding.
10. a kind of multiple spot Friction Stir Welding device according to claim 9, it is characterised in that: between the stirring-head (5)
Relative position and distance can be adjusted by multi-shaft device (3)；The main shaft (2) or welding bench can be along welding bead extending directions
It is mobile.
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| CN201910516610.XA CN110340515A (en) | 2019-06-14 | 2019-06-14 | A kind of method and device of the weldering of multiple spot agitating friction and the soldering of multiple spot agitating friction |
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Application publication date: 20191018 |