CN101157156A - A soldering set for agitating friction welding - Google Patents
A soldering set for agitating friction welding Download PDFInfo
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- CN101157156A CN101157156A CNA2007101355754A CN200710135575A CN101157156A CN 101157156 A CN101157156 A CN 101157156A CN A2007101355754 A CNA2007101355754 A CN A2007101355754A CN 200710135575 A CN200710135575 A CN 200710135575A CN 101157156 A CN101157156 A CN 101157156A
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- friction stir
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Abstract
The invention relates to a double-layer aluminum alloy material friction stir welding tool, and the welding tool comprises a cylindrical connector at the rear part, a cylinder in the middle part, and a stirring pin at the front part; the middle cylinder is provided with a heat emission spiral groove; the stirring pin at the front part takes a shape of a cone, and the surface of the cone is provided with a spiral groove; the shaft shoulder is an inwardly-dished conical surface, an end head of the middle cylinder is connected with the bottom of the stirring pin, at least three spiral grooves are uniformly distributed on the conical surface of the stirring pin, and a hemipheric groove is arranged at the top end of the stirring pin. The spiral groove on the stirring pin is intersected with the hemipheric groove, and at least three notches are formed on the edge of the hemipheric groove of the conical stirring pin. The metal plastic flow is enhanced by the friction stir welding tool of the structure during the friction stir welding of the aluminum alloy, and the problem that the deficiency and the unevenness of the heat quantity of the lower layer plate caused by poor heat transfer of the double-layer plate is solved.
Description
Technical field
The present invention relates to a kind of soldering set, especially the soldering set of using as double-layer aluminium alloy sheet material friction stir welding belongs to material interconnection technique field.
Background technology
Friction stir welding (FSW) is a kind of new type low temperature solid phase interconnection technique, is applicable to the low-melting alloy welding.Be 1991 by Britain's institute of welding (The Welding Institute, TWI) Fa Ming (US5460317), the principle of this technology is to utilize the stirring-head of rotation at a high speed to insert in the seam, utilize the strong friction and the stirring action of stirring-head, make the solder joint district be in the thermoplasticity state and be broken, mix, be joined together under certain pressure effect, stirring-head rotates at a high speed and pushes towards welding direction, rear at stirring-head has then formed weld seam, thereby has finished solid-state connection.Each state is all in competitively research and development, in field extensive application such as space flight and aviation, boats and ships, bullet train, armored combat vehicles at present.Friction stir welding is owing to finish solid-state connection under than the condition low by solder alloy material melting point temperature, so not fusing of metal material, welding contraction distortion is little and the mechanical property loss is low, and outstanding advantage is arranged.
Aluminum alloy materials is widely used in industry and civil area, the special shape aluminum alloy materials is used as the support frame of product more and more widely in recent years, at present, along with the size of LCD TV is increasing, the original engineering plastics that use of TV frame can not satisfy the requirement of intensity and rigidity, need to adopt the high aluminium alloy extrusions of intensity to make the frame of LCD TV.But because the aluminium alloy extrusions that the LCD TV frame is adopted is a kind of its length; respectively there is the aluminium alloy extrusions of the special shape of a small boss inboard of minor face; adopt traditional aluminium alloy welding method; as TIG weldering (tungsten inert gas arc-welding); the shape and size that MIG weldering (welding) can not guarantee to weld rear boss; and the welding deformation of aluminium alloy extrusions after melting also is that household appliances institute is unacceptable; therefore adopt the technology of friction stir welding; utilize the advantage that welding contraction distortion is little and the mechanical property loss is low, can address the above problem effectively.During friction stir welding, must piece together auxiliary cushion block at the interior outside of aluminium alloy extrusions to be welded edge and form the double-layer aluminium alloy material structure, and the stirring-head of existing friction stir welding is during to the welding of above-mentioned double-layer aluminium alloy material, especially for the welding of special shape aluminum alloy materials, the problem that the lower plywood that causes owing to the doubling plate heat transfer problem that exists does not weld.Patent No. CN200310116992.6 has introduced a kind of utilization has the groove pin to carry out the apparatus and method of friction stir welding, patent 200610010553.0 has been introduced a kind of copper and copper alloy agitating friction welding soldering set, and two kinds of welding that these two patents propose all are not suitable for being applied to the friction stir welding of double-layer aluminium alloy material with soldering set.
Summary of the invention
The technical problem to be solved in the present invention is: stir when welding at having the special shape aluminium alloy extrusions, the welding of existing agitating friction is difficult to solve the problem that lower plywood that the doubling plate heat transfer problem causes does not weld with soldering set, and the technological difficulties that problem caused such as the inhomogeneous and shape of material thickness is special, make the agitating friction welding be difficult to the effect that reaches desirable.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of soldering set of friction stir welding comprises the cylindrical connector in rear portion, mediate cylindrical, anterior mixing needle; Be shaped on locking tightening platform on the described cylindrical connector, described mediate cylindrical is shaped on heat emission spiral groove; The mixing needle of described soldering set front portion is conical, and this trochoidal surface is shaped on helicla flute; The termination of described mediate cylindrical is the taper seat of indent with the shaft shoulder that the mixing needle bottom is connected, and is evenly distributed to few three helical grooves on the described mixing needle taper seat, and the top of this mixing needle is shaped on hemispherical groove.
Helical groove on the described mixing needle and hemispherical groove intersect, and form at least three breach at semi-circular recesses edge, the top of conical mixing needle.
The angle of the normal of the taper seat of described shaft shoulder indent and mixing needle axis is 5～15 degree.
The helical angle of described helical groove is 55～65 degree.
The degree of depth of described hemispherical groove is 3～4mm.
Described spiral fluted is shaped as recessed semicircle, and the degree of depth is 2～3mm.
Described helicla flute also can be the triangular-section, and described triangular-section is 54 degree, and the degree of depth is 2～3mm.
The present invention contacts the stirring-head rubbing surface of special shape with the outer surface (or inner surface) of L type aluminium alloy extrusions, during welding, owing on the mixing needle of stirring-head, increased at least three helical grooves, increased a groove on the stirring-head top, this groove is that part circular or part are oval, thereby the plasticity that can add strength aluminum alloy metal when friction stir welding flows, utilize the special metal flow heat production that increases, improved the lower plywood shortage of heat problem that L type aluminium alloy extrusions causes owing to the doubling plate heat transfer problem when friction stir welding, thereby the high-quality of having realized L type aluminium alloy extrusions connects.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
The schematic diagram that Fig. 1 uses for the present invention.
Fig. 2 is the structure chart of the soldering set of friction stir welding of the present invention.
The specific embodiment
The special shape L type aluminium alloy extrusions schematic diagram of the embodiment of the invention is used to make large scale liquid crystal TV frame shown in the preface among Fig. 11.Respectively there is a small boss 5 inboard on the long and short limit of this section bar, and large scale liquid crystal TV L type aluminium alloy extrusions frame welding back requires to guarantee the shape and size of boss, and the welding deformation requirement of aluminium alloy extrusions after melting also is very little.
As shown in Figure 1, in this embodiment, with L type aluminium alloy extrusions 1 counter putting, i.e. the inner surface of stirring-head rubbing surface contact L type aluminium alloy extrusions 1, edge is pieced together auxiliary cushion block 3,4 respectively in the interior outside of L type aluminium alloy extrusions 1 to be welded.
The structure of stirring-head of the present invention 2 shown in Figure 2 comprises the cylindrical connector 7 in rear portion, mediate cylindrical 8, anterior mixing needle 10; Be shaped on locking tightening platform 6 on the cylindrical connector 7, mediate cylindrical 8 is shaped on heat emission spiral groove 9; The mixing needle 10 of soldering set front portion is conical, and this trochoidal surface is shaped on helicla flute 12; The shaft shoulder 14 that the termination of mediate cylindrical 8 is connected with mixing needle 10 bottoms is the taper seat of indent, be evenly distributed to few three helical grooves 13 on mixing needle 10 taper seats, the top of this mixing needle 10 is shaped on hemispherical groove 11, helical groove 13 on the mixing needle intersects with hemispherical groove 11, forms at least three breach at semi-circular recesses 11 edges, the top of conical mixing needle 10.The angle of the normal of the indent conical surface of the shaft shoulder 14 and mixing needle 10 axis is 5～15 degree, and the helical angle of helical groove 13 is 55～65 degree.The degree of depth of hemispherical groove 11 is 3～4mm.Helicla flute 12 be shaped as recessed semicircle, the degree of depth is 2～3mm.Helicla flute 12 also can be the triangular-section, and described triangular-section is 54 degree, and the degree of depth is 2～3mm.
The plasticity that this structure has been strengthened L type aluminium alloy extrusions metal when friction stir welding flows, utilize the special metal flow heat production that increases to improve when agitating friction welds because the lower plywood shortage of heat problem that the doubling plate heat transfer problem causes, having solved friction stir welding technology needs the specific (special) requirements of contact friction to the welding position, after L type aluminium alloy extrusions adds auxiliary cushion block 3,4, improved the heat transfer problem of doubling plate, realized that the high-quality of L section bar connects.The generation heat that plastic deformation flows in welding process, mainly be to produce by extruding in mixing needle 10 welding processes of the special shape of stirring-head 5 front tapers, at least 3 helical grooves 13 of processing on the taper mixing needle 10, increased plastic metal flowing from the bottom up, when up flowing, runs on the metal that flows the shaft shoulder 14 of indent, under the stopping of the shaft shoulder 14 of indent, metal moves downward again, at this moment the metal of Liu Donging has just formed one from lower to upper again by last closed down mutually flow field, makes plastic metal form violent motion.According to the plastic metal process principle, the strenuous exercise of plastic metal will produce a large amount of heats.Simultaneously be processed into semi-circular recesses 11 on the top of taper mixing needle 10, and and helical groove 13 intersect, form 3 breach at the edge of the top of taper mixing needle 10 semi-circular recesses 11, be convenient to plastic metal and from breach, flow out and flow into.
When welding, by special anchor clamps with L type aluminium alloy extrusions 1, and auxiliary cushion block 3,4 are clamped on the welding bench, stirring-head 2 begins rotation and inserts auxiliary cushion block 3 from the C point, begin welding then, at this moment L type aluminium alloy extrusions 1 and auxiliary cushion block 3,4 form an overall structure on thickness direction, the heat transfer of the heat that is produced by the shaft shoulder 14 spin frictions of stirring-head 2 can continuous carrying out, when stirring-head 2 arrives the A point, be two-layer on the thickness direction, be L type aluminium alloy extrusions and auxiliary cushion block 3, because the seam crossing between L-shaped section 1 and auxiliary cushion block 3 has an air layer interface, and air is the non-conductor of heat, thereby the heat between the double layer of metal is difficult to transmit.Be in following auxiliary cushion block 3 because at this moment shortage of heat is easy to generate the problem that welding is not gone up, but following auxiliary cushion block 3 is technology cushion blocks, needs machining to remove after the welding, so it doesn't matter for the quality of cushion block welding quality.After stirring-head 2 arrived the D point, at this moment L type aluminium alloy extrusions had welded and has finished.
Below be a practical application example that adopts apparatus of the present invention to weld:
Through verification experimental verification, during welding, adopt stirring-head of the present invention after, stirring-head rotation speed 600 rev/mins than the slow-speed of revolution time, just can obtain the good weld seam of welding quality, and the rotating speed of existing stirring-head must reach 1000 rev/mins, and welding effect is also undesirable.
In addition to the implementation, the present invention can also have other embodiments, and as rotation direction of helical groove or the like, all employings are equal to replaces or technical scheme that equivalent transformation forms, all drops in the protection domain of requirement of the present invention.
Claims (7)
1. the soldering set of a friction stir welding comprises the cylindrical connector in rear portion (7), mediate cylindrical (8), anterior mixing needle (10); Be shaped on locking tightening platform (6) on the described cylindrical connector (7), described mediate cylindrical (8) is shaped on heat emission spiral groove (9); It is characterized in that: the mixing needle (10) of described soldering set front portion is for conical, and this trochoidal surface is shaped on helicla flute (12); The termination of described mediate cylindrical (8) is the taper seat of indent with the shaft shoulder (14) that mixing needle (10) bottom is connected, be evenly distributed to few three helical grooves (13) on described mixing needle (10) taper seat, the top of this mixing needle (10) is shaped on hemispherical groove (11).
2. the soldering set of a kind of friction stir welding according to claim 1, it is characterized in that: the helical groove (12) on the described mixing needle (10) intersects with hemispherical groove (11), forms at least three breach at the semi-circular recesses edge, top of conical mixing needle (10).
3. the soldering set of a kind of friction stir welding according to claim 1 is characterized in that: the angle of the normal of the described shaft shoulder (13) the indent conical surface and mixing needle (10) axis is 5～15 degree.
4. the soldering set of a kind of friction stir welding according to claim 1 and 2 is characterized in that:, the helical angle of described helical groove (13) is 55～65 degree.
5. the soldering set of a kind of friction stir welding according to claim 1, it is characterized in that: the degree of depth of described hemispherical groove (11) is 3～4mm.
6. the soldering set of a kind of friction stir welding according to claim 1 is characterized in that: described helicla flute (9) be shaped as recessed semicircle, the degree of depth is 2～3mm.
7. the soldering set of a kind of friction stir welding according to claim 6, it is characterized in that: described helicla flute (9) also can be the triangular-section, and described triangular-section is 54 degree, and the degree of depth is 2～3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101355754A CN100519044C (en) | 2007-11-13 | 2007-11-13 | A soldering set for agitating friction welding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101355754A CN100519044C (en) | 2007-11-13 | 2007-11-13 | A soldering set for agitating friction welding |
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| CN101157156A true CN101157156A (en) | 2008-04-09 |
| CN100519044C CN100519044C (en) | 2009-07-29 |
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| CNB2007101355754A Expired - Fee Related CN100519044C (en) | 2007-11-13 | 2007-11-13 | A soldering set for agitating friction welding |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101885109A (en) * | 2010-07-30 | 2010-11-17 | 北京理工大学 | Friction stir welding method of medium plate AZ AZ1 magnesium alloy |
| CN102513691A (en) * | 2011-12-09 | 2012-06-27 | 中国航空工业集团公司北京航空制造工程研究所 | Stirring pin for increasing metal flow of weld root |
| CN102947044A (en) * | 2010-06-23 | 2013-02-27 | 伊卓特有限两合公司 | Connecting element for a friction-welded connection for connecting at least two panel-like components |
| CN102971108A (en) * | 2010-07-12 | 2013-03-13 | 日本轻金属株式会社 | Rotating tool for forming voids and void-formation method |
| CN103084731A (en) * | 2013-02-06 | 2013-05-08 | 南京航空航天大学 | Integrated stir-welding head capable of removing overlap and used for stir friction welding |
| CN103286435A (en) * | 2013-06-20 | 2013-09-11 | 山东大学 | Stir head for friction stir machining and fabrication of metal matrix composite |
| CN103909342A (en) * | 2014-03-26 | 2014-07-09 | 上海交通大学 | Connecting method for two-piece type hub |
| CN105312761A (en) * | 2015-06-05 | 2016-02-10 | 唐远金 | Flexible stirring head and friction stir welding device with same |
| CN106794546A (en) * | 2014-08-28 | 2017-05-31 | 三菱重工业株式会社 | Friction-stir welding tool, friction-stir engagement device and friction stirring connecting method |
| CN108031967A (en) * | 2017-11-28 | 2018-05-15 | 上海航天设备制造总厂 | The upset force self compensation stirring tool and welding method of aclinal agitating friction weldering |
| CN108817650A (en) * | 2018-09-04 | 2018-11-16 | 北京世佳博科技发展有限公司 | A kind of stirring-head for corner joint Friction Stir Welding |
| JP2020163460A (en) * | 2019-03-29 | 2020-10-08 | 本田技研工業株式会社 | Tool for friction stir joining |
| JP2020163459A (en) * | 2019-03-29 | 2020-10-08 | 本田技研工業株式会社 | Tool for friction stir joining |
| CN111745281A (en) * | 2019-03-29 | 2020-10-09 | 本田技研工业株式会社 | Tool for friction stir welding |
| CN111745283A (en) * | 2019-03-29 | 2020-10-09 | 本田技研工业株式会社 | Tool for friction stir welding |
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2007
- 2007-11-13 CN CNB2007101355754A patent/CN100519044C/en not_active Expired - Fee Related
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| CN102947044A (en) * | 2010-06-23 | 2013-02-27 | 伊卓特有限两合公司 | Connecting element for a friction-welded connection for connecting at least two panel-like components |
| CN102947044B (en) * | 2010-06-23 | 2016-03-23 | 伊卓特有限两合公司 | For connecting the Connection Element of at least two plate-like pieces in friction welding connection |
| CN102971108B (en) * | 2010-07-12 | 2015-05-27 | 日本轻金属株式会社 | Rotating tool for forming voids and void-formation method |
| CN102971108A (en) * | 2010-07-12 | 2013-03-13 | 日本轻金属株式会社 | Rotating tool for forming voids and void-formation method |
| CN101885109A (en) * | 2010-07-30 | 2010-11-17 | 北京理工大学 | Friction stir welding method of medium plate AZ AZ1 magnesium alloy |
| CN102513691A (en) * | 2011-12-09 | 2012-06-27 | 中国航空工业集团公司北京航空制造工程研究所 | Stirring pin for increasing metal flow of weld root |
| CN103084731B (en) * | 2013-02-06 | 2015-05-27 | 南京航空航天大学 | Integrated stir-welding head capable of removing overlap and used for stir friction welding |
| CN103084731A (en) * | 2013-02-06 | 2013-05-08 | 南京航空航天大学 | Integrated stir-welding head capable of removing overlap and used for stir friction welding |
| CN103286435B (en) * | 2013-06-20 | 2015-11-04 | 山东大学 | A kind of mixing yoghurt prepares the stirring-head of metal-base composites |
| CN103286435A (en) * | 2013-06-20 | 2013-09-11 | 山东大学 | Stir head for friction stir machining and fabrication of metal matrix composite |
| CN103909342A (en) * | 2014-03-26 | 2014-07-09 | 上海交通大学 | Connecting method for two-piece type hub |
| CN103909342B (en) * | 2014-03-26 | 2017-01-11 | 上海交通大学 | Connecting method for two-piece type hub |
| CN106794546A (en) * | 2014-08-28 | 2017-05-31 | 三菱重工业株式会社 | Friction-stir welding tool, friction-stir engagement device and friction stirring connecting method |
| CN106794546B (en) * | 2014-08-28 | 2019-06-28 | 三菱重工工程株式会社 | Friction-stir welding tool, friction-stir engagement device and friction stirring connecting method |
| CN105312761B (en) * | 2015-06-05 | 2019-02-15 | 广东柳泰焊接科技有限公司 | A kind of flexibility stirring-head and its friction stir weld device |
| CN105312761A (en) * | 2015-06-05 | 2016-02-10 | 唐远金 | Flexible stirring head and friction stir welding device with same |
| CN108031967A (en) * | 2017-11-28 | 2018-05-15 | 上海航天设备制造总厂 | The upset force self compensation stirring tool and welding method of aclinal agitating friction weldering |
| CN108817650A (en) * | 2018-09-04 | 2018-11-16 | 北京世佳博科技发展有限公司 | A kind of stirring-head for corner joint Friction Stir Welding |
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| CN111745281A (en) * | 2019-03-29 | 2020-10-09 | 本田技研工业株式会社 | Tool for friction stir welding |
| CN111745282A (en) * | 2019-03-29 | 2020-10-09 | 本田技研工业株式会社 | Tool for friction stir welding |
| CN111745283A (en) * | 2019-03-29 | 2020-10-09 | 本田技研工业株式会社 | Tool for friction stir welding |
| JP2020163460A (en) * | 2019-03-29 | 2020-10-08 | 本田技研工業株式会社 | Tool for friction stir joining |
| US11311962B2 (en) | 2019-03-29 | 2022-04-26 | Honda Motor Co., Ltd. | Friction stir welding tool |
| CN111745282B (en) * | 2019-03-29 | 2022-05-24 | 本田技研工业株式会社 | Friction stir welding tool |
| CN111745283B (en) * | 2019-03-29 | 2022-05-24 | 本田技研工业株式会社 | Tool for friction stir welding |
| JP7125912B2 (en) | 2019-03-29 | 2022-08-25 | 本田技研工業株式会社 | Tools for friction stir welding |
| JP7141359B2 (en) | 2019-03-29 | 2022-09-22 | 本田技研工業株式会社 | Tools for friction stir welding |
| TWI766465B (en) * | 2020-12-04 | 2022-06-01 | 財團法人金屬工業研究發展中心 | Friction stir build-up manufacturing method of metal parts |
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