CN104308358A - Novel aluminum alloy mixing pin - Google Patents
Novel aluminum alloy mixing pin Download PDFInfo
- Publication number
- CN104308358A CN104308358A CN201410577331.1A CN201410577331A CN104308358A CN 104308358 A CN104308358 A CN 104308358A CN 201410577331 A CN201410577331 A CN 201410577331A CN 104308358 A CN104308358 A CN 104308358A
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- CN
- China
- Prior art keywords
- mixing needle
- aluminum alloy
- helix
- novel aluminum
- welding
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
- B23K20/122—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 using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—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 using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/1255—Tools therefor, e.g. characterised by the shape of the probe
Abstract
The invention discloses a novel aluminum alloy mixing pin comprising a tapered pin body. The tapered face of the tapered pin body is provided with a plurality of spiral lines. The tapered face of the tapered pin body is evenly provided with three straight-face edges and three taper-face edges; the taper-face edges are provided with spiral lines in different spiral directions, respectively, including a rightward spiral line, a leftward spiral line and a circular spiral line. The novel aluminum alloy mixing pin has the advantages that welding thickness is increased from original 40mm to existing 80mm, the welding thickness is increased by 100%, frictional heat is more evenly distributed through changes in the structure of the pin, material flow is more reasonable, and weld quality is better.
Description
Technical field
The present invention relates to a kind of novel aluminum alloy mixing needle
Background technology
Friction stir welding is by Britain's institute of welding (The Welding Institute; be called for short TWI) a kind of solid-state bonding process of proposing in 1991, and in 1993 and nineteen ninety-five both developed and developing country application worldwide intellectual property protection.This know-why is simple, and controling parameters is few, is easy to automation, the human factor in welding process can be dropped to minimum.Agitating friction welding technology, compared with traditional melting welding, has lot of advantages, thus makes it have prospects for commercial application and development potentiality widely.About the research of the impact etc. of the tissue of friction stir welding, mechanical property (comprising fracture, fatigue, corrosive nature), Non-Destructive Testing and technological parameter butt welded seam quality is the basis of applying friction stir welding, the research about these aspects is the study hotspot in this field.Agitating friction welding technology be in world's solder technology development history Zi invention to the magical solid diffusivity new technology of short and the most with fastest developing speed one of commercial Application time span.End on September 15th, 2002, the user obtaining the license of Britain's institute of welding (TWI) friction stir welding patented technology in world wide is own through there being 78, the patented technology relevant to agitating friction welding technology has 551, and user has covered 24 countries and regions.The companies such as famous Boe ing, NASA, BAE, HONDA, GE, HITACHI, MARTIN have purchased technique, and a large amount of applying with succeeding in industries such as space flight, aviation, vehicle, shipbuildings.
The Fundamentals of Welding of friction stir welding are: be placed in docking workpiece on backing plate by clamp, unclamp to prevent banjo fixing butt jointing in welding process.A stirring-head with special type stirring finger rotates and inserts two pieces of commissures of docking between sheet material by stirring finger slowly.In general, the degree of depth of length close to weld seam of finger is stirred.When the stirring finger contact surface of the work rotated, with the quick fricative frictional heat of surface of the work, the temperature of contact point material is raised, intensity reduces.Stir finger continuous upset and the material extruding seam both sides under external force, till shaft shoulder close contact surface of the work.At this moment, below the shaft shoulder and around stirring finger, a large amount of plasticizing layers is formed by the frictional heat rotating the shaft shoulder and the generation of stirring finger.When workpiece relative to stir finger move or stir finger opposite piece move time, stirring under the mechanical agitation and upset effect that finger side and direction of rotation produce, the front surface stirring finger is transplanted on the material of plasticizing and stirs finger rear surface.When stirring finger and advancing along seam, the banjo fixing butt jointing surface of stirring soldering tip front is heated to superplastic state by friction.Stir finger and shaft shoulder friction seam, broken oxide-film, stirs and recombinates and stir the ground material at finger rear.Just weld seam is formed after stirring the material cooled at finger rear.This weld seam visible is the solid-state weld seam formed under heat, machine synergy.This method can be regarded as a kind of self-locking hole interconnection technique, and in welding process, stir finger place place and form aperture, aperture is filled again in welding process subsequently, leaves a keyhole at the end of iting is noted that stirring friction welding seam in terminal.Usually this keyhole can cut away, and also can live with other welding method soldering and sealing.
The effect of mixing needle produces heat by spin friction to provide heat needed for welding, and drive the flowing of mixing needle adjacent material to form weld seam; The shape of mixing needle is most important to stirring solder technology, which determines the Plastic Flow of heating and material.When the thickness of welding material increases, between mixing needle and workpiece, fricative heat also becomes important origin of heat.
Existing aluminium alloy mixing needle structure mainly contains light face cylinder, common cylinder screw thread, tapered thread, and the screw thread etc. of large groove screw thread and band helical flow groove, its throat thickness is all less than 40mm.
Existing stirring-head cannot realize the welding of thickness more than the aluminium alloy plate of 40mm.
Summary of the invention
The technical issues that need to address of the present invention are just the defect overcoming prior art, provide a kind of novel aluminum alloy mixing needle, and it can make throat thickness increase, and by original 40mm 80mm till now, improve throat thickness 100%; The change of mixing needle structure makes fricative heat more even, and material flowing is more reasonable, and the weldquality of formation is better.
For solving the problem, the present invention adopts following technical scheme:
The invention provides a kind of novel aluminum alloy mixing needle, comprise conical mixing needle, described conical mixing needle taper seat is provided with many rotation directions helix.
Described conical mixing needle taper seat is evenly equipped with 3 and faces seamed edge and 3 conical surface limits directly, 3 conical surface limits are respectively arranged with the helix of different rotation direction, be respectively dextrorotation to helix, left-handed to helix and annular helical line.
The effect of mixing needle produces heat by spin friction to provide heat needed for welding, and drive the flowing of mixing needle adjacent material to form weld seam; The shape of mixing needle is most important to stirring solder technology, which determines the Plastic Flow of heating and material.When the thickness of welding material increases, between mixing needle and workpiece, fricative heat also becomes important origin of heat; Its structure of novel aluminum alloy mixing needle adopts circular cone many rotation directions helix, taper seat faces seamed edge directly for uniform 3,3 taper seats are processed respectively the helix of different rotation direction simultaneously, multi-direction mechanical agitation power is repeated for weld metal zone plastic material provides, material is flowed more reasonable, to form fine and close seam organization.
Accompanying drawing explanation
Fig. 1 is perspective view of the present invention.
Fig. 2 is that the present invention is left-handed to helix and annular helical line structural representation.
Fig. 3 is that dextrorotation of the present invention is to helix structure schematic diagram.
Fig. 4 is cross-sectional structure schematic diagram of the present invention.
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the invention provides a kind of novel aluminum alloy mixing needle, comprise conical mixing needle 1, described conical mixing needle taper seat is provided with many rotation directions helix.
Described conical mixing needle taper seat is evenly equipped with 3 and faces seamed edge 111,112,113 directly, with 3 conical surfaces, 121,122,123,3 conical surface limits are respectively arranged with the helix of different rotation direction, are respectively dextrorotation to helix 2, left-handed to helix 3 and annular helical line 4.
The effect of mixing needle produces heat by spin friction to provide heat needed for welding, and drive the flowing of mixing needle adjacent material to form weld seam; The shape of mixing needle is most important to stirring solder technology, which determines the Plastic Flow of heating and material.When the thickness of welding material increases, between mixing needle and workpiece, fricative heat also becomes important origin of heat; Its structure of novel aluminum alloy mixing needle adopts circular cone many rotation directions helix, taper seat faces seamed edge directly for uniform 3,3 taper seats are processed respectively the helix of different rotation direction simultaneously, multi-direction mechanical agitation power is repeated for weld metal zone plastic material provides, material is flowed more reasonable, to form fine and close seam organization.
Last it is noted that obviously, above-described embodiment is only for example of the present invention is clearly described, and the restriction not 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 exhaustive without the need to also giving all embodiments.And thus the apparent change of amplifying out or variation be still among protection scope of the present invention.
Claims (2)
1. a novel aluminum alloy mixing needle, is characterized in that: comprise conical mixing needle, and described conical mixing needle taper seat is provided with many rotation directions helix.
2. novel aluminum alloy mixing needle as claimed in claim 1, it is characterized in that: described conical mixing needle taper seat is evenly equipped with 3 and faces seamed edge and 3 conical surface limits directly, article 3, conical surface limit is respectively arranged with the helix of different rotation direction, is respectively dextrorotation to helix, left-handed to helix and annular helical line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410577331.1A CN104308358A (en) | 2014-10-22 | 2014-10-22 | Novel aluminum alloy mixing pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410577331.1A CN104308358A (en) | 2014-10-22 | 2014-10-22 | Novel aluminum alloy mixing pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104308358A true CN104308358A (en) | 2015-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410577331.1A Pending CN104308358A (en) | 2014-10-22 | 2014-10-22 | Novel aluminum alloy mixing pin |
Country Status (1)
| Country | Link |
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| CN (1) | CN104308358A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020163448A (en) * | 2019-03-29 | 2020-10-08 | 本田技研工業株式会社 | Tool for friction stir joining |
-
2014
- 2014-10-22 CN CN201410577331.1A patent/CN104308358A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020163448A (en) * | 2019-03-29 | 2020-10-08 | 本田技研工業株式会社 | Tool for friction stir joining |
| JP7101140B2 (en) | 2019-03-29 | 2022-07-14 | 本田技研工業株式会社 | Friction stir welding tool |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150128 |