CN102091860A - Double-moving ring friction spot welding method - Google Patents
Double-moving ring friction spot welding method Download PDFInfo
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- CN102091860A CN102091860A CN2009102003215A CN200910200321A CN102091860A CN 102091860 A CN102091860 A CN 102091860A CN 2009102003215 A CN2009102003215 A CN 2009102003215A CN 200910200321 A CN200910200321 A CN 200910200321A CN 102091860 A CN102091860 A CN 102091860A
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Abstract
The invention discloses a novel solid phase spot connecting technique, in particular a double-moving ring friction spot welding method. The invention aims to solve the problem that the conventional friction spot welding head has a weak connecting face. The method disclosed by the invention strengthens the intrinsic weak face of the conventional friction spot welding head by means of changing the conventional external sleeve ring into the rotary moving rings and performing a down pressing action, and therefore realizes consistent high-quality connection of all parts of a solid phase sport joint.
Description
Technical field
The invention belongs to welding field, be specifically related to a kind of double movable ring friction spot welding method.
Background technology
Chinese patent CN101053923A discloses a kind of stirring friction spot welding technology on October 17th, 2007 and has adopted stirring-head, the friction stir spot welding processing simultaneously from the two sides; Its welding portion mainly comprises four parts, the promptly upper and lower stirring-head and the upper and lower shaft shoulder; The frictional heat of two-sided friction stir spot welding process and plastic deformation ability produce from upper and lower surface; The upper and lower stirring-head of two-sided stirring friction spot welding technology has the shaft shoulder that can rotate freely, the rotation of the shaft shoulder can replenish the deficiency of stirring-head heat production in the two-sided friction stir spot welding process on every side; Just because of these differences, not only can make face of weld be pressed into the hole and extrudate all reduces half but also the heat production of welding process is doubled, thereby the shortcoming that two-sided friction stir welding not only can overcome the single face friction stir spot welding can also be boosted productivity.The defective of friction stir spot welding is for existing keyhole, surface irregularity.
Friction spot welding technology (Friction Spot Welding) is to fill solid phase spot welding by German GKSS research center in the original position of invention in 1999, and details are seen U.S. Pat 6722556-B2.Friction spot welding adopts the spot-welding tool of split, and by the relative motion of accurate control points welding tool, the material at butt welding point position rubs the heating power extruding and forms no keyhole tack-weld, and the spot-welding part site surface is smooth.
In pinpoint welding procedure, shear at joint outer ring sidewall when the spot-welding tool collar presses down and formed new interface, and this interface is connected to form new joint face at follow-up phase and the thermoplastic that extruding flows in this, but owing to be positioned at the joint outmost turns herein, interface temperature is relatively low, therefore new joint face molding condition is abominable, if the improper situation that will cause virtual connections of technological parameter.Though therefore adopt this friction spot welding method welding aluminum alloy can realize than the more connection of high-quality of resistance electric welding, but because the inherent characteristics of this welding method, the interlayer joint face of the weakness of solder joint joint during by resistance spot welding transferred on the above-mentioned new joint face.
Therefore, invent novel friction spot welding technology, have active demand in order to change the weak joint face of traditional friction spot welding.
Summary of the invention
At the above-mentioned deficiency of existing friction spot welding technology, technical problem to be solved by this invention is that proposition is a kind of in order to change the double movable ring friction spot welding method that there is weak joint face in traditional friction spot welding.The inventive method proposes technological innovation to the quiet outer ring pressure ring of traditional friction spot welding, with this method that changes the rotation rotating ring into and pressing action is arranged, guaranteed the forming temperature of tack-weld numerical value joint face and in conjunction with pressure, strengthened the intrinsic plane of weakness that former friction spot welding joint exists, realized that the conforming high-quality of joint of solidus straight coupling connects everywhere.
The present invention solves the problems of the technologies described above the technical scheme that adopts to be: a kind of double movable ring friction spot welding method comprises the steps:
1) outer ring collar workpiece pressing surface, middle ring set and central shaft are adjacent to surface of the work extruding rotation, friction heated parts position to be welded, make metal material plasticity softening;
2) intermediate collar extruding rotation is pressed into material internal, and central shaft rotation is simultaneously risen, and plastic material flows to the central shaft zone;
3) central shaft rotation extruding downwards, middle annulus rotates back to removes rising, and the outer ring ring set also rotates decline simultaneously, and plastic material is backfilling under the squeezing action of central shaft in the zone of original central shaft and intermediate collar formation;
4) after the central shaft of friction spot welding instrument, middle ring set and outer ring ring set move to desired location, keep upset 0.2s～1s, remove the friction spot welding instrument, welding process finishes, and the overlap joint workpiece is linked into an integrated entity by solder joint.
In the said method of the present invention, the final volume under pressure degree of depth of supposing the outer ring ring set is h, and the process of pressing down can also can have certain acceleration at the uniform velocity descending, and the h value is relevant with the depth of weld, cross the shaping of conference his-and-hers watches face and cause certain influence, the too small internal pressure that then can not guarantee vertical joint face place mother metal side.In general, the h value be preferably 0.005～0.01 times of the spot-welded on depth H with first test plate (panel) thickness sum.
Crucial innovation of the present invention is at the rotation and the pressing action of outer ring ring set, and when middle ring set arrived setting depth of weld position, the outer ring ring set began rotation, and along with the rising of middle ring set and pressing down of central shaft, the outer ring ring set also has the volume under pressure of certain depth.The rotation heat production of outer ring ring set is in order to guarantee the proper temperature of vertical joint face place mother metal, and pressing action is in order to guaranteeing the internal pressure of vertical joint face place mother metal side, and these two actions are from heat and two aspects of power that mother metal and solder joint are inner to be pushed the combination that flows in this material best condition of contact is provided.
The present invention adopts and changes former static outer sleeve into the rotation rotating ring and have the method for pressing action to strengthen the intrinsic plane of weakness that former friction spot welding joint exists, and realizes that the conforming high-quality of joint of solidus straight coupling connects everywhere.This method is compared with existing friction spot welding method, has the following advantages: 1) solder joint joint quality high conformity; 2) improve solder joint tension shearing strength.
Description of drawings
Fig. 1～Fig. 5 is the process schematic diagram of double movable ring friction spot welding of the present invention.
Wherein, 11 is central shaft, and 12 is middle ring set, and 13 is the outer ring ring set, and 14 are the clamping backing plate, and 21 are the spot welding region material, and 22 is the upper strata welding material, and 23 is lower floor's welding material.
The specific embodiment
As Fig. 1～shown in Figure 5, the double movable ring friction spot welding method that the preferred embodiment of the present invention provides comprises the steps:
1) the friction heating period: contained mould action is played on the collar 13 workpiece pressing surfaces in outer ring, and middle ring set 12 and central shaft 11 are adjacent to surface of the work extruding rotation, friction heated parts position to be welded, make metal material plasticity softening;
2) original position mix stages: intermediate collar 12 extruding rotations are pressed into material internal, and central shaft 11 rotations are simultaneously risen, and plastic material flows to the central shaft zone;
More than two stages identical with traditional friction spot welding process stage, outer ring ring set 13 needn't rotate and press down, when ring set 12 arrived the position of setting the depths of weld in the middle for the treatment of, the outer ring ring set began rotation, carries out following process then.
3) reinforced original position is forged the stage: central shaft 11 rotations extruding downwards, middle annulus rotates back to removes rising, the outer ring ring set also rotates decline simultaneously, and plastic material is backfilling under the squeezing action of central shaft in the zone of original central shaft 11 and intermediate collar 12 formations;
This stage is the shaping stage of vertical joint face, the most critical link that belongs to welding, added the action of outer ring ring set 13 rotation declines with respect to this stage of traditional friction spot welding, in order to strengthen the bonding strength of vertical joint face, outer ring ring set volume under pressure scope is 0.1mm～0.mm, and concrete choosing value is decided by the spot welding material thickness.。
4) the welding forming stage: after central shaft 11, middle ring set 12 and the outer ring ring set 13 of spot-welding tool move to desired location, keep upset a period of time, remove the friction spot welding instrument, welding process promptly finishes; The overlap joint workpiece is linked into an integrated entity by solder joint.
Among the present invention, the rotational velocity range of central shaft 11, middle ring set 12 and outer ring ring set 13 is 500r/min～3000r/min.As shown in Figure 5, the final volume under pressure degree of depth of supposing the outer ring ring set is h, and the process of pressing down can also can have certain acceleration at the uniform velocity descending, and the h value is relevant with the depth of weld, cross the shaping of conference his-and-hers watches face and cause certain influence, the too small internal pressure that then can not guarantee vertical joint face place mother metal side.In general, in the present embodiment, the h value is 0.005～0.01 times of spot-welded on depth H.
Claims (2)
1. a double movable ring friction spot welding method is characterized in that, this method comprises the steps:
1) outer ring collar workpiece pressing surface, middle ring set and central shaft are adjacent to surface of the work extruding rotation, friction heated parts position to be welded, make metal material plasticity softening;
2) intermediate collar extruding rotation is pressed into material internal, and central shaft rotation is simultaneously risen, and plastic material flows to the central shaft zone;
3) central shaft rotation extruding downwards, middle annulus rotates back to removes rising, and the outer ring ring set also rotates decline simultaneously, and plastic material is backfilling under the squeezing action of central shaft in the zone of original central shaft and intermediate collar formation;
4) after the central shaft of friction spot welding instrument, middle ring set and outer ring ring set move to desired location, keep upset 0.2s～1s, remove the friction spot welding instrument, welding process finishes, and the overlap joint workpiece is linked into an integrated entity by solder joint.
2. double movable ring friction spot welding method according to claim 1 is characterized in that, the final volume under pressure degree of depth of outer ring ring set be 0.005～0.01 times of the spot-welded on degree of depth with first test plate (panel) thickness sum.
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| CN2009102003215A CN102091860A (en) | 2009-12-11 | 2009-12-11 | Double-moving ring friction spot welding method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513689A (en) * | 2011-12-12 | 2012-06-27 | 上海航天设备制造总厂 | In-situ filling keyhole-free friction-stir welding method |
| CN102513690A (en) * | 2011-12-12 | 2012-06-27 | 上海航天设备制造总厂 | Method for removing annular groove through filling type friction stir spot welding |
| CN102554454A (en) * | 2011-12-12 | 2012-07-11 | 上海航天设备制造总厂 | Three-moving-ring stirring friction spot-welding tool and spot welding method using same |
| CN102974945A (en) * | 2012-12-24 | 2013-03-20 | 上海电机学院 | Electro-plastic friction stir spot welding device and method thereof |
| CN103008874A (en) * | 2012-12-24 | 2013-04-03 | 上海电机学院 | Agitating friction spot welding device and method for dissimilar metal |
| 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 |
| CN103182600A (en) * | 2011-12-27 | 2013-07-03 | 上海航天设备制造总厂 | Solid phase spot welding method |
| CN103406659A (en) * | 2013-08-09 | 2013-11-27 | 中国航空工业集团公司北京航空制造工程研究所 | Backfill type friction stir welding method and device |
| CN103801818A (en) * | 2014-03-05 | 2014-05-21 | 中国航空工业集团公司北京航空制造工程研究所 | Insertion type flow friction spot welding method and tool |
| CN104551378A (en) * | 2013-10-23 | 2015-04-29 | 上海航天设备制造总厂 | Dual-moving ring friction stir spot welder |
| CN105598574A (en) * | 2014-11-18 | 2016-05-25 | 上海航天设备制造总厂 | Friction stirring seam welding and spot welding integrated spindle |
| CN106001896A (en) * | 2016-06-12 | 2016-10-12 | 上海航天设备制造总厂 | Aluminum/steel dissimilar material friction spot welding method based on surface roughing |
| CN109175669A (en) * | 2018-09-17 | 2019-01-11 | 上海航天设备制造总厂有限公司 | A kind of friction spot welding increasing material manufacturing method |
| CN113382818A (en) * | 2019-02-08 | 2021-09-10 | 丰田自动车株式会社 | Dissimilar metal welding method |
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2009
- 2009-12-11 CN CN2009102003215A patent/CN102091860A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102513689B (en) * | 2011-12-12 | 2017-02-08 | 上海航天设备制造总厂 | In-situ filling keyhole-free friction-stir welding method |
| CN102513690A (en) * | 2011-12-12 | 2012-06-27 | 上海航天设备制造总厂 | Method for removing annular groove through filling type friction stir spot welding |
| CN102554454A (en) * | 2011-12-12 | 2012-07-11 | 上海航天设备制造总厂 | Three-moving-ring stirring friction spot-welding tool and spot welding method using same |
| CN102513689A (en) * | 2011-12-12 | 2012-06-27 | 上海航天设备制造总厂 | In-situ filling keyhole-free friction-stir welding method |
| CN102513690B (en) * | 2011-12-12 | 2017-08-15 | 上海航天设备制造总厂 | The removing method of filled type friction stir spot welding circular groove groove |
| CN102554454B (en) * | 2011-12-12 | 2017-05-10 | 上海航天设备制造总厂 | Spot welding method using three-moving-ring stirring friction spot-welding tool |
| CN103182600A (en) * | 2011-12-27 | 2013-07-03 | 上海航天设备制造总厂 | Solid phase spot welding method |
| CN102974945A (en) * | 2012-12-24 | 2013-03-20 | 上海电机学院 | Electro-plastic friction stir spot welding device and method thereof |
| CN103008874A (en) * | 2012-12-24 | 2013-04-03 | 上海电机学院 | Agitating friction spot welding device and method for dissimilar metal |
| 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 |
| CN103406659A (en) * | 2013-08-09 | 2013-11-27 | 中国航空工业集团公司北京航空制造工程研究所 | Backfill type friction stir welding method and device |
| CN104551378A (en) * | 2013-10-23 | 2015-04-29 | 上海航天设备制造总厂 | Dual-moving ring friction stir spot welder |
| CN103801818A (en) * | 2014-03-05 | 2014-05-21 | 中国航空工业集团公司北京航空制造工程研究所 | Insertion type flow friction spot welding method and tool |
| CN103801818B (en) * | 2014-03-05 | 2016-03-16 | 中国航空工业集团公司北京航空制造工程研究所 | A kind of plug-in type flowage friction spot welding method and instrument thereof |
| CN105598574A (en) * | 2014-11-18 | 2016-05-25 | 上海航天设备制造总厂 | Friction stirring seam welding and spot welding integrated spindle |
| CN105598574B (en) * | 2014-11-18 | 2020-01-10 | 上海航天设备制造总厂 | Friction stir welding seam welding and spot welding integrated main shaft |
| CN106001896A (en) * | 2016-06-12 | 2016-10-12 | 上海航天设备制造总厂 | Aluminum/steel dissimilar material friction spot welding method based on surface roughing |
| CN109175669A (en) * | 2018-09-17 | 2019-01-11 | 上海航天设备制造总厂有限公司 | A kind of friction spot welding increasing material manufacturing method |
| CN113382818A (en) * | 2019-02-08 | 2021-09-10 | 丰田自动车株式会社 | Dissimilar metal welding method |
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Application publication date: 20110615 |