CN201529846U - Multi-legged stirring head of friction stir welding capable of improving welded seam performance - Google Patents
Multi-legged stirring head of friction stir welding capable of improving welded seam performance Download PDFInfo
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- CN201529846U CN201529846U CN2009201539292U CN200920153929U CN201529846U CN 201529846 U CN201529846 U CN 201529846U CN 2009201539292 U CN2009201539292 U CN 2009201539292U CN 200920153929 U CN200920153929 U CN 200920153929U CN 201529846 U CN201529846 U CN 201529846U
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Abstract
A multi-legged stirring head of a friction stir welding capable of improving welded seam performance comprises at least one front stirring head used for stirring welding to form a welded seam and at least one rear stirring head arranged behind the front stirring head and used for performing rotating extrusion on the welded seam and a parent metal. The multi-legged stirring head is capable of ensuring smooth welding process, and simultaneously carrying out rotating extrusion on the welded seam to realize even transition of the welded seam and the parent metal, thereby lowering stress concentration, reducing the same to the lowest and even eliminating the same. The multi-legged stirring head is capable of realizing even transition of the welded seam and the parent metal and eliminating thickness difference typically existing in FSW.
Description
Technical field
The utility model relates to welding technology field, relates in particular to a kind of polypody stirring friction welding agitator head that improves Weld Performance.
Background technology
Agitating friction welding (FSW:Friction Stir Welding) has very high welding quality, be widely used in industries such as Aero-Space, vehicle, shipbuildings, but because also there is certain weak point in the weld characteristics of himself.As welding point weld seam position, can produce a volume under pressure, pressing down physical dimension can be variant according to the difference of sheet metal thickness, be generally about 0.05～0.8mm, this just makes weld seam and mother metal transitional region exist stress to concentrate, thereby becomes the welding point weak link.For the friction stir welding joint of big sheet material, except that there was a volume under pressure in weld seam, the both sides of the shaft shoulder were owing to throwing away of plastic material forms overlap, and in practical engineering application, eliminating the overlap process promptly increases manufacturing procedure, increases the industrial production cost again.
The utility model content
For this reason, technical problem to be solved in the utility model is to provide a kind of welding point stress of can effectively avoiding to concentrate, and improves the stirring friction welding agitator head and the welding method of quality of weld joint.
For solving the problems of the technologies described above, the utility model is achieved through the following technical solutions:
A kind of polypody stirring friction welding agitator head that improves Weld Performance comprises that at least one is used to stir welding and forms the preposition stirring-head of weld seam and at least one and place the rearmounted stirring-head that is used for described weld seam and mother metal are rotated extruding after the described preposition stirring-head.
Described preposition stirring-head is one, and described rearmounted stirring-head is two.
Two described rearmounted stirring-heads are arranged on the proceeds posterolateral of described preposition stirring-head symmetrically.
Described preposition stirring-head comprises stirring probe, the shaft shoulder and hold assembly, and described rearmounted stirring-head comprises the shaft shoulder and hold assembly.
The direction of rotation of described preposition stirring-head and described rearmounted stirring-head is opposite.
The present technique utility model is mainly in order to slacken the weld stress concentration problem that friction stir welding joint throat depth difference causes, its mechanism of action is: the function of the preposition stirring-head of front is finished weld seam for normal the stirring, the rearmounted stirring-head of back does not stir probe, and its effect only is that butt welded seam and mother metal surface are rotated extruding.Because the hot mechanism of the shaft shoulder is also more intense, the weld seam of plate surface is through the dynamic recrystallization process, and tissue improves, and performance improves greatly.The amount of being pressed into of the rearmounted stirring-head of back is littler than the amount of being pressed into of front stirring-head, and the relative altitude difference of the amount of being pressed into can be regulated at random.The direction of rotation of a plurality of stirring-heads can be identical also can be opposite.The stirring-head of general agitating friction welding is rotated counterclockwise, and the rearmounted stirring-head of back can be clockwise, again plate surface is carried out superplasticity and handles the reinforced boards performance.
Technique scheme of the present utility model has the following advantages compared to existing technology: 1) polypody stirring-head of the present utility model is except guaranteeing the carrying out smoothly of welding process, butt welded seam is implemented a rotation extruding simultaneously, allow weld seam and mother metal realize even transition, concentrate to reduce stress, minimize even disappear.Adopt the polypody stirring-head, weld seam can be realized the even transition with mother metal, eliminates the distinctive thickness difference of FSW.2) improve Weld Performance.This hot mechanism can be improved the tissue on welding point surface, experience dynamic recrystallization process, and grain refinement, performance improves greatly.3) reduce weld residual stress.Further rotate extruding by rearmounted stirring-head, it is minimum that residual stress is reduced to.4) cost of manufacture is low.After the welding, do not need follow-up processing promptly can engineering to use, reduced the defective of eliminating thickness difference and overlap, save time, laborsaving.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment of the utility model also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is the structural representation of the stirring-head of prior art;
Fig. 2 is the structural representation of stirring-head of the present utility model;
Rotation schematic diagram when Fig. 3 is stirring-head of the present utility model work.
Reference numeral is expressed as among the figure: 1-stirs probe, the 2-shaft shoulder, 3-clamping part section, the preposition stirring-head of 4-, the rearmounted stirring-head of 5-.
The specific embodiment
As shown in Figures 2 and 3, the polypody stirring friction welding agitator head that improves Weld Performance of the present utility model comprises that at least one is used to stir welding and forms the preposition stirring-head 4 of weld seam and at least one and place the rearmounted stirring-head 5 that is used for described weld seam and mother metal are rotated extruding after the described preposition stirring-head 4.In the present embodiment, described preposition stirring-head 4 is one, and described rearmounted stirring-head 5 is two.Two described rearmounted stirring-heads 5 are arranged on the proceeds posterolateral of described preposition stirring-head 4 symmetrically.Described preposition stirring-head 4 comprises stirring probe 1, the shaft shoulder 2 and hold assembly 3, and described rearmounted stirring-head 5 does not stir probe, includes only the shaft shoulder 2 and hold assembly 3.
When carrying out the agitating friction welding, by being rotated extruding by 5 pairs of described weld seams of rearmounted stirring-head and mother metal again behind the preposition stirring-head 4 stirring welding formation weld seams.The amount of being pressed into of described rearmounted stirring-head 5 is less than the amount of being pressed into of described preposition stirring-head 4.The direction of rotation of described preposition stirring-head 4 and described rearmounted stirring-head 5 is opposite.Because the hot mechanism of the shaft shoulder 2 is also more intense, the weld seam of plate surface is through the dynamic recrystallization process, and tissue improves, and performance improves greatly.The amount of being pressed into of the rearmounted stirring-head 5 of back is littler than the amount of being pressed into of front stirring-head, and the relative altitude difference of the amount of being pressed into can be regulated at random.
According to the difference of welding matrix material, stirring-head can adopt materials such as mild steel, high-speed steel and high temperature alloy to make.Stirring-head can be cylindricality shaven head, cylindrical thread, taper shaven head and tapered thread and stirs first-class multi-form.The shaft shoulder diameter variation scope of preposition stirring-head 4 is D=17～27mm, and the excursion that stirs probe diameter is d=3～5mm.Rearmounted stirring-head 5 no probe shaft shoulder physical dimensions can require do suitable adjustment according to weld width, and generally shaft shoulder diameter dimension excursion is about D=5～25mm, and three stirring-heads link simultaneously, and the direction of rotation of rearmounted stirring-head 5 in the same way or incorgruous.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of the invention.
Claims (5)
1. polypody stirring friction welding agitator head that can improve Weld Performance, it is characterized in that, comprise that at least one is used to stir welding and forms the preposition stirring-head (4) of weld seam and at least one and place described preposition stirring-head (4) to be used for described weld seam and mother metal are rotated the rearmounted stirring-head (5) of extruding afterwards.
2. polypody stirring friction welding agitator head according to claim 1 is characterized in that, described preposition stirring-head (4) is one, and described rearmounted stirring-head (5) is two.
3. polypody stirring friction welding agitator head according to claim 2 is characterized in that, two described rearmounted stirring-heads (5) are arranged on the proceeds posterolateral of described preposition stirring-head (4) symmetrically.
4. according to arbitrary described polypody stirring friction welding agitator head among the claim 1-3, it is characterized in that, described preposition stirring-head (4) comprises stirring probe (1), the shaft shoulder (2) and hold assembly (3), and described rearmounted stirring-head (5) comprises the shaft shoulder (2) and hold assembly (3).
5. according to arbitrary described polypody stirring friction welding agitator head among the claim 1-3, it is characterized in that the direction of rotation of described preposition stirring-head (4) and described rearmounted stirring-head (5) is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201539292U CN201529846U (en) | 2009-05-18 | 2009-05-18 | Multi-legged stirring head of friction stir welding capable of improving welded seam performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201539292U CN201529846U (en) | 2009-05-18 | 2009-05-18 | Multi-legged stirring head of friction stir welding capable of improving welded seam performance |
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| Publication Number | Publication Date |
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| CN201529846U true CN201529846U (en) | 2010-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009201539292U Expired - Fee Related CN201529846U (en) | 2009-05-18 | 2009-05-18 | Multi-legged stirring head of friction stir welding capable of improving welded seam performance |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101559536B (en) * | 2009-05-18 | 2011-08-10 | 北京科技大学 | Multi-feet mixing friction welding mixing head capable of improving performance of welding seam |
| CN105108360A (en) * | 2015-08-28 | 2015-12-02 | 昆山斯格威电子科技有限公司 | Lithium battery electrode double-head friction stir and ultrasonic combined welding method |
| CN109967855A (en) * | 2019-03-20 | 2019-07-05 | 哈尔滨工业大学 | A kind of inhibition weld seam is thinned and thickens the friction stir welding method of weld seam |
-
2009
- 2009-05-18 CN CN2009201539292U patent/CN201529846U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101559536B (en) * | 2009-05-18 | 2011-08-10 | 北京科技大学 | Multi-feet mixing friction welding mixing head capable of improving performance of welding seam |
| CN105108360A (en) * | 2015-08-28 | 2015-12-02 | 昆山斯格威电子科技有限公司 | Lithium battery electrode double-head friction stir and ultrasonic combined welding method |
| CN109967855A (en) * | 2019-03-20 | 2019-07-05 | 哈尔滨工业大学 | A kind of inhibition weld seam is thinned and thickens the friction stir welding method of weld seam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100721 Termination date: 20120518 |