CN103008874A - Agitating friction spot welding device and method for dissimilar metal - Google Patents
Agitating friction spot welding device and method for dissimilar metal Download PDFInfo
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- CN103008874A CN103008874A CN2012105686691A CN201210568669A CN103008874A CN 103008874 A CN103008874 A CN 103008874A CN 2012105686691 A CN2012105686691 A CN 2012105686691A CN 201210568669 A CN201210568669 A CN 201210568669A CN 103008874 A CN103008874 A CN 103008874A
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Abstract
The invention provides an agitating friction spot welding device for dissimilar metal. The device comprises an agitating sleeve, an agitating needle arranged in the agitating sleeve, a clamping sleeve clamped outside the agitating sleeve, and a welding cushion block; a welding workpiece is arranged between the clamping sleeve and the welding cushion pad; an annular electric brush is arranged at the top of the welding cushion block; a T-shaped through hole is formed in the center of the welding cushion block; a conductive rod is arranged in the welding cushion block; the conductive rod is flush with the upper surface of the welding cushion block; and the annular electric brush and the conductive rod are respectively connected with an anode and a cathode of a controllable direct current power supply through a lead. The invention further provides an agitating friction spot welding method for dissimilar metal. The method comprises the following steps of plastically softening metal material, respectively connecting the annular electric brush and the conductive rod with a direct current power supply which has the reversed polarity, so as to conduct a welding loop, and then finishing the welding by adopting a spot welding process. According to the device and the method provided by the invention, as certain welding current is applied to the welding material which is high in lower layer strength during the agitating friction spot welding process of the dissimilar metal, the material is more easily and plastically distorted, the welding pressure is reduced and the welding quality is improved.
Description
Technical field
The present invention relates to a kind of dissimilar metal stirring friction spot welding device, and use this device to stir the method for spot welding.
Background technology
Along with the increasingly sternness of global resources supply and environmental protection, automotive light weight technology more and more receives people's concern, and becomes the main direction of current automobile industry development.Adopting the light-alloy such as aluminium, magnesium and high-strength steel material is to realize light-weighted important measures.Yet the physical attribute of the light-alloy such as aluminium, magnesium and high-strength steel material differs greatly, and when welding generate easily hard and crisp intermetallic compound, therefore, the joint welding quality is relatively poor when adopting traditional resistance spot welding method.
Stirring friction spot welding technology is a kind of novel solid phase interconnection technique, and in invention in 1999, details were seen US Patent No. 6722556-B2 by German GKSS research center.This technology adopts the special stirring-head that is comprised of mixing needle, stirring cover and gripping sleeve, relative motion by accurate each parts of control stirring-head, when stirring-head withdraws, fill the hole of withdrawing from that stirring-head forms in welding process, thereby form the tack-weld of surfacing.Because material is in molten condition in the welding process, this technique has overcome the problems of welded quality that the dissimilar metals such as aluminium, steel cause because of a large amount of welding heat inputs preferably.
Yet, in the friction stir spot welding process, when lower plywood is the higher high-strength steel of intensity, because welding material plastic deformation resistance is larger, needs to adopt larger weld force, thereby stirring-head intensity, hardness and welding system proposed higher requirement.And the material plastic flow difficulty causes the tack-weld welding quality not high, and welding performance is relatively poor.
Summary of the invention
The invention provides a kind of dissimilar metal stirring friction spot welding device, and use this device to stir the method for spot welding, the defects that exists to overcome prior art.
In order to achieve the above object, the invention provides a kind of dissimilar metal stirring friction spot welding device, comprise and stir cover, mixing needle in described stirring cover, be clamped in and stir the outer gripping sleeve of cover, and welding cushion block, be welding work pieces between described gripping sleeve and the welding cushion block, it is characterized in that, be provided with annular brush at welding cushion block top, be provided with T-shaped through hole at welding cushion block center, conducting rod is installed, conducting rod and welding cushion block upper surface flush, described annular brush links to each other with negative pole with the positive pole of controllable direct current power supply by wire respectively with conducting rod.
As preferred version, be provided with cylinder boss at welding cushion block top, and be threaded connection annular brush, the interior ring height of the height of described cylinder boss and diameter and annular brush is complementary with diameter.
As further preferred version, gripping sleeve and welding cushion block are made by insulating materials, or the surface scribbles coatings.
The present invention also provides a kind of dissimilar metal friction stir spot welding method that adopts said apparatus, comprises the steps:
A) gripping sleeve and welding cushion block compress welding work pieces, mixing needle and stirring cover are adjacent to surface of the work and push in the same way rotation, make metal material plasticity softening, when gripping sleeve compresses welding work pieces, described annular brush and conducting rod are communicated with respectively opposite polarity dc source, make the welding circuit conducting;
B) the stirring cover is rotated down and is pressed into welding work pieces inside, and simultaneously mixing needle rotation is risen, and plastic material is mobile to the mixing needle lower area, after reaching the required depth of weld, stir the cover rotation and rise, and mixing needle pushes backfilling material downwards;
C) after stirring cover and mixing needle and moving to respectively the same level face, keep withdrawing to initial station after forging and pressing a period of time the cut-out direct current.
Described galvanic current strength is preferably between 500A～3000A.
Step C) in forge time be preferably 0.2 second～1 second.
When gripping sleeve compressed welding work pieces, welding current circulated in lower floor's sheet material.Along with the continuation that is pressed into the backfill stage, lower floor's welding work pieces is subjected to impact easier generation plastic deformation on direct current conducting direction of ring-shaped electro-plastic effect, thereby has reduced to stir the lower pressure resistance of cover.The Plastic Flow ability of welding material gets a promotion simultaneously, and the binding ability of material obtains to strengthen under the molten condition, thereby has improved the comprehensive quality of tack-weld.
The present invention utilizes the electro plastic effect of material, in dissimilar metal friction stir spot welding process, the higher welding material of lower floor's intensity is applied certain welding current, so that the easier generation plastic deformation of material, reduced the welding pressure in the welding process, improve simultaneously the Plastic Flow ability of material in the welding process, improved the welding quality of friction stir spot plumb joint.
Description of drawings
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is the structural representation of annular brush 5.
Fig. 3 is the implementing procedure schematic diagram of spot welding method of the present invention.
The specific embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.
As shown in Figure 1, a kind of dissimilar metal stirring friction spot welding device of the present invention, comprise and stir cover 2, mixing needle 1 in described stirring cover 2, be clamped in the gripping sleeve 3 that stirs outside the cover 2, and welding cushion block 4, be welding work pieces between described gripping sleeve 3 and the welding cushion block 4, it is characterized in that, be provided with annular brush 5 at welding cushion block 4 tops, be provided with T-shaped through hole at welding cushion block 4 centers, conducting rod 6 is installed, conducting rod 6 and welding cushion block 4 upper surface flush, described annular brush 5 links to each other with negative pole with the positive pole of controllable direct current power supply by wire respectively with conducting rod 6.
Preferably, be provided with cylinder boss at welding cushion block 4 tops, and be threaded connection annular brush 5, the interior ring height of the height of described cylinder boss and diameter and annular brush 5 is complementary with diameter.
Further preferred, gripping sleeve 3 and welding cushion block 4 are made by insulating materials, or the surface scribbles coatings.
As shown in Figure 2, the present invention comprises the steps: by the method for said apparatus realization dissimilar metal friction stir spot welding
A) gripping sleeve 3 and welding cushion block 4 compress welding work pieces, mixing needle 1 and stirring cover 2 are adjacent to aluminium alloy or magnesium alloy plate 7 and high-strength steel sheet material 8 surfaces and push in the same way rotation, make metal material plasticity softening, when gripping sleeve 3 compresses welding work pieces, described annular brush 5 and conducting rod 6 are communicated with respectively opposite polarity dc source, make the welding circuit conducting, such as Fig. 2 a);
C) after stirring cover 2 and mixing needle 1 and moving to respectively the same level face, keep forging and pressing a period of time, stirring-head withdraws to initial station, cuts off direct current, and welding process finishes, such as Fig. 2 e)～f).
Described direct current 500A～3000A.
Step C) forge time is 0.2 second～1 second in.
When gripping sleeve compressed welding work pieces, welding current circulated in lower floor's sheet material.Along with the continuation that is pressed into the backfill stage, lower floor's welding work pieces is subjected to impact easier generation plastic deformation on direct current conducting direction of ring-shaped electro-plastic effect, thereby has reduced to stir the lower pressure resistance of cover.The Plastic Flow ability of welding material gets a promotion simultaneously, and the binding ability of material obtains to strengthen under the molten condition, thereby has improved the comprehensive quality of tack-weld.
Claims (6)
1. dissimilar metal stirring friction spot welding device, comprise and stir cover (2), mixing needle (1) in described stirring cover (2), be clamped in and stir the outer gripping sleeve (3) of cover (2), and welding cushion block (4), be welding work pieces between described gripping sleeve (3) and the welding cushion block (4), it is characterized in that, be provided with annular brush (5) at welding cushion block (4) top, be provided with T-shaped through hole at welding cushion block (4) center, conducting rod (6) is installed, conducting rod (6) and welding cushion block (4) upper surface flush, described annular brush (5) links to each other with negative pole with the positive pole of controllable direct current power supply by wire respectively with conducting rod (6).
2. dissimilar metal stirring friction spot welding device as claimed in claim 1, it is characterized in that, be provided with cylinder boss at welding cushion block (4) top, and be threaded connection annular brush (5), the interior ring height of the height of described cylinder boss and diameter and annular brush (5) is complementary with diameter.
3. dissimilar metal stirring friction spot welding device as claimed in claim 1 is characterized in that, gripping sleeve (3) and welding cushion block (4) are made by insulating materials, or the surface scribbles coatings.
4. an employing such as each described device of claim 1-3 carry out the method for dissimilar metal friction stir spot welding, it is characterized in that, comprise the steps:
A) gripping sleeve (3) and welding cushion block (4) compress welding work pieces, mixing needle (1) and stirring cover (2) are adjacent to surface of the work and push in the same way rotation, make metal material plasticity softening, when gripping sleeve compresses welding work pieces, described annular brush (5) and conducting rod (6) are communicated with respectively opposite polarity dc source, make the welding circuit conducting;
B) stirring cover (2) is rotated down and is pressed into welding work pieces inside, simultaneously mixing needle (1) rotation is risen, and plastic material flows to mixing needle (1) lower area, after reaching the required depth of weld, stir cover (2) rotation and rise, and mixing needle (1) pushes backfilling material downwards;
C) after stirring cover (2) and mixing needle (1) and moving to respectively the same level face, keep withdrawing to initial station after forging and pressing a period of time the cut-out direct current.
5. method as claimed in claim 4 is characterized in that, described galvanic current strength is 500-3000A.
6. method as claimed in claim 4 is characterized in that, step C) described in forge time be 0.2-1 second.
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| CN2012105686691A CN103008874A (en) | 2012-12-24 | 2012-12-24 | Agitating friction spot welding device and method for dissimilar metal |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170752A (en) * | 2013-04-09 | 2013-06-26 | 上海电机学院 | Friction stir spot welding (FSSW) device of resistor and method thereof |
| CN103170725A (en) * | 2013-04-09 | 2013-06-26 | 上海电机学院 | Electromagnetic friction stir spot welding device and method thereof |
| CN104690414A (en) * | 2015-03-04 | 2015-06-10 | 天津大学 | Electroplastic ultrasonic spot welding device |
| CN104741769A (en) * | 2013-12-27 | 2015-07-01 | 株式会社Uacj | Process for spot-joining stacked metal foils |
| CN104942427A (en) * | 2015-06-12 | 2015-09-30 | 哈尔滨工业大学 | Asymmetric backfilling type friction stir spot welding method eliminating holes and annular trenches |
| CN105108361A (en) * | 2015-09-10 | 2015-12-02 | 昆山斯格威电子科技有限公司 | Keyhole-less friction stir welding spot welding device and method |
| CN105522273A (en) * | 2014-10-22 | 2016-04-27 | 上海航天设备制造总厂 | Secondary back-filling type friction stir spot welding method |
| CN108555434A (en) * | 2018-06-04 | 2018-09-21 | 吉林大学 | Agitating friction welder applied to numerically-controlled machine tool |
| EP3431217A4 (en) * | 2016-03-17 | 2019-11-20 | Kawasaki Jukogyo Kabushiki Kaisha | Friction stir spot welding method and friction stir spot welding device |
| CN110640392A (en) * | 2019-08-30 | 2020-01-03 | 北京卫星制造厂有限公司 | Aluminum alloy weld defect repairing method based on RFSSW equipment |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004174507A (en) * | 2002-11-22 | 2004-06-24 | Kawasaki Heavy Ind Ltd | Friction stir welding device, and friction stir welding method |
| KR20070061937A (en) * | 2005-12-12 | 2007-06-15 | 현대자동차주식회사 | Friction spot joint method |
| CN101537529A (en) * | 2009-04-24 | 2009-09-23 | 重庆大学 | Pin tool for friction stir welding and ultrafine grain preparation method thereof |
| CN201333591Y (en) * | 2008-12-25 | 2009-10-28 | 西安建筑科技大学 | Device for composite resistance heat - friction stir welding of stainless steel |
| CN101574756A (en) * | 2009-04-24 | 2009-11-11 | 重庆大学 | Electromagnetic vibrating, stirring and friction-welding stirring-head and welding method thereof |
| CN101850475A (en) * | 2010-04-29 | 2010-10-06 | 重庆大学 | Current loading method for current-carrying friction stir welding and equipment thereof |
| JP2011083805A (en) * | 2009-10-16 | 2011-04-28 | Furukawa Electric Co Ltd:The | Friction stir welding apparatus, and friction stir welding method |
| CN102091860A (en) * | 2009-12-11 | 2011-06-15 | 上海航天设备制造总厂 | Double-moving ring friction spot welding method |
-
2012
- 2012-12-24 CN CN2012105686691A patent/CN103008874A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004174507A (en) * | 2002-11-22 | 2004-06-24 | Kawasaki Heavy Ind Ltd | Friction stir welding device, and friction stir welding method |
| KR20070061937A (en) * | 2005-12-12 | 2007-06-15 | 현대자동차주식회사 | Friction spot joint method |
| CN201333591Y (en) * | 2008-12-25 | 2009-10-28 | 西安建筑科技大学 | Device for composite resistance heat - friction stir welding of stainless steel |
| CN101537529A (en) * | 2009-04-24 | 2009-09-23 | 重庆大学 | Pin tool for friction stir welding and ultrafine grain preparation method thereof |
| CN101574756A (en) * | 2009-04-24 | 2009-11-11 | 重庆大学 | Electromagnetic vibrating, stirring and friction-welding stirring-head and welding method thereof |
| JP2011083805A (en) * | 2009-10-16 | 2011-04-28 | Furukawa Electric Co Ltd:The | Friction stir welding apparatus, and friction stir welding method |
| CN102091860A (en) * | 2009-12-11 | 2011-06-15 | 上海航天设备制造总厂 | Double-moving ring friction spot welding method |
| CN101850475A (en) * | 2010-04-29 | 2010-10-06 | 重庆大学 | Current loading method for current-carrying friction stir welding and equipment thereof |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170752A (en) * | 2013-04-09 | 2013-06-26 | 上海电机学院 | Friction stir spot welding (FSSW) device of resistor and method thereof |
| CN103170725A (en) * | 2013-04-09 | 2013-06-26 | 上海电机学院 | Electromagnetic friction stir spot welding device and method thereof |
| CN104741769A (en) * | 2013-12-27 | 2015-07-01 | 株式会社Uacj | Process for spot-joining stacked metal foils |
| CN105522273A (en) * | 2014-10-22 | 2016-04-27 | 上海航天设备制造总厂 | Secondary back-filling type friction stir spot welding method |
| CN104690414A (en) * | 2015-03-04 | 2015-06-10 | 天津大学 | Electroplastic ultrasonic spot welding device |
| CN104942427A (en) * | 2015-06-12 | 2015-09-30 | 哈尔滨工业大学 | Asymmetric backfilling type friction stir spot welding method eliminating holes and annular trenches |
| CN104942427B (en) * | 2015-06-12 | 2017-01-25 | 哈尔滨工业大学 | Asymmetric backfilling type friction stir spot welding method eliminating holes and annular trenches |
| CN105108361A (en) * | 2015-09-10 | 2015-12-02 | 昆山斯格威电子科技有限公司 | Keyhole-less friction stir welding spot welding device and method |
| EP3431217A4 (en) * | 2016-03-17 | 2019-11-20 | Kawasaki Jukogyo Kabushiki Kaisha | Friction stir spot welding method and friction stir spot welding device |
| CN108555434A (en) * | 2018-06-04 | 2018-09-21 | 吉林大学 | Agitating friction welder applied to numerically-controlled machine tool |
| CN108555434B (en) * | 2018-06-04 | 2024-03-22 | 吉林大学 | Friction stir welding device applied to numerical control machine tool |
| CN110640392A (en) * | 2019-08-30 | 2020-01-03 | 北京卫星制造厂有限公司 | Aluminum alloy weld defect repairing method based on RFSSW equipment |
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Application publication date: 20130403 |