CN103111750A - Welding joint and method for improving friction stir welding strength - Google Patents
Welding joint and method for improving friction stir welding strength Download PDFInfo
- Publication number
- CN103111750A CN103111750A CN2013100651065A CN201310065106A CN103111750A CN 103111750 A CN103111750 A CN 103111750A CN 2013100651065 A CN2013100651065 A CN 2013100651065A CN 201310065106 A CN201310065106 A CN 201310065106A CN 103111750 A CN103111750 A CN 103111750A
- Authority
- CN
- China
- Prior art keywords
- welding
- workpiece
- welded
- mixing needle
- joint
- Prior art date
- 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.)
- Pending
Links
Images
Landscapes
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a welding joint which comprises a stirring pin (1) and two pressure heads (2) positioned at two ends of the stirring pin (1) respectively. Annular protrusions (1a) are distributed on the surface of the stirring pin (1). The invention furthers a method for improving friction stir welding strength. The method includes: enabling the stirring pin (1) of the welding joint in the Claim 1 to enter a sealing joint of a to-be-welded workpiece from a lateral side of the to-be-welded workpiece, enabling the two pressure heads (2) to respectively press above and below the to-be-welded workpiece, enabling the welding joint to rotate at a high speed, and enabling the welding point to move along and relative to the workpiece to complete welding. The welding joint is simple in structure, easy to implement and capable of effectively preventing crack expansion, so that welding performance is improved; and the method for improving friction stir welding strength is simple in operation, and welding strength is greatly improved.
Description
Technical field
The present invention relates to a kind of plumb joint and welding method, particularly a kind of plumb joint and a kind of method that strengthens agitating friction welding intensity for the agitating friction welding.
Background technology
Friction stir welding is to utilize frictional heat and plastic deformation heat as welding heat source.Be that with conventional friction welding (FW) difference the friction stir welding welding process is to be stretched into the seam crossing of workpiece by the mixing needle (welding pin) of a cylinder or other shapes (as threaded cylinder), High Rotation Speed by soldering tip, make itself and welding work pieces material friction, thereby make the material temperature of connecting portion raise softening.Simultaneously material is carried out agitating friction and complete welding.Workpiece will be rigidly fixed on back pad in welding process, soldering tip limit High Rotation Speed.Seam and the workpiece of edge workpiece relatively move.The nose section of soldering tip puts in material internal and rubs and stir, the shoulder of soldering tip and surface of the work frictional heat, and be used for preventing overflowing of mecystasis material, can play the effect of removing surface film oxide simultaneously.
The successful design of stirring-head is the key that friction stir welding is applied in wider material and welds wider thickness range.Stirring-head comprises two parts: mixing needle and pressure head.The shape of stirring-head adopts cone or cylindrical, and stirring the melt run that forms between weld zone and matrix is straight line, and like this when crackle occurring, crackle is easily expanded and caused the welding region cracking and cause the weldment cracking.Weld strength is not high.
Summary of the invention
The object of the present invention is to provide a kind of expansion that can effectively prevent crackle, improve the welding of welding performance.
The object of the present invention is achieved like this: a kind of plumb joint, comprise mixing needle (1) and pressure head (2), it is characterized in that: described pressure head (2) is two, and two pressure heads (2) lay respectively at the two ends of mixing needle (1), and the surface distributed of described mixing needle (1) has annular projection (1a).
Adopt technique scheme, changed the shape of stirring-head mixing needle, establish annular projection on mixing needle, making and stirring the melt run that forms between weld zone and matrix is not straight line but the irregular broken line of " interlocking ", the welding region cracking that causes with regard to the expansion that has effectively prevented crackle like this and cause the situation of weldment cracking has significantly improved welding performance.
In technique scheme: described mixing needle (1) is round table-like or coniform.
The method of enhancing agitating friction welding intensity of the present invention is achieved in that the mixing needle (1) with the plumb joint in claim 1 enters the seam crossing of workpiece to be welded (3) from the side of workpiece to be welded (3), two pressure heads (2) are pressed in respectively the top and bottom of workpiece to be welded (3), then High Rotation Speed plumb joint, and plumb joint is relatively moved along the seam of workpiece to be welded (3) and workpiece complete welding.
Beneficial effect: stirring-head provided by the invention is simple in structure, easy enforcement, can effectively prevent the expansion of crackle, has improved welding performance.The method of enhancing stirring weld strength of the present invention is simple to operate, has greatly improved weld strength.
Description of drawings
Fig. 1 is structural representation of the present invention.
The specific embodiment
As shown in Figure 1, plumb joint of the present invention is comprised of mixing needle 1 and two pressure heads 2, and two pressure heads 2 lay respectively at the two ends of mixing needle 1, and described mixing needle 1 is round table-like or coniform.The surface distributed of described mixing needle 1 has annular projection 1a.
During use, the mixing needle 1 of plumb joint is entered the seam crossing of workpiece 3 to be welded from the side of workpiece 3 to be welded, two pressure heads 2 are pressed in respectively the top and bottom of workpiece 3 to be welded, High Rotation Speed plumb joint then, and plumb joint is relatively moved along the seam of workpiece 3 to be welded and workpiece complete welding.
Claims (3)
1. a plumb joint, comprise mixing needle (1) and pressure head (2), and it is characterized in that: described pressure head (2) is two, and two pressure heads (2) lay respectively at the two ends of mixing needle (1), and the surface distributed of described mixing needle (1) has annular projection (1a).
2. plumb joint according to claim 1, it is characterized in that: described mixing needle (1) is for round table-like or coniform.
3. one kind strengthens the method that agitating friction welds intensity, it is characterized in that: the mixing needle (1) of the plumb joint in claim 1 is entered the seam crossing of workpiece to be welded (3) from the side of workpiece to be welded (3), two pressure heads (2) are pressed in respectively the top and bottom of workpiece to be welded (3), then High Rotation Speed plumb joint, and plumb joint is relatively moved along the seam of workpiece to be welded (3) and workpiece complete welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100651065A CN103111750A (en) | 2013-03-01 | 2013-03-01 | Welding joint and method for improving friction stir welding strength |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100651065A CN103111750A (en) | 2013-03-01 | 2013-03-01 | Welding joint and method for improving friction stir welding strength |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103111750A true CN103111750A (en) | 2013-05-22 |
Family
ID=48410163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100651065A Pending CN103111750A (en) | 2013-03-01 | 2013-03-01 | Welding joint and method for improving friction stir welding strength |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103111750A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104588868A (en) * | 2015-02-12 | 2015-05-06 | 江苏烁石焊接科技有限公司 | Double-shaft-shoulder stirring head for metal composite plate welding |
| CN105782561A (en) * | 2016-04-28 | 2016-07-20 | 青岛华涛汽车模具有限公司 | Double-welding rib structure of valve seat assembly |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002224859A (en) * | 2001-01-31 | 2002-08-13 | Nippon Light Metal Co Ltd | Friction stir tool and method for using it |
| JP2002263863A (en) * | 2001-03-08 | 2002-09-17 | Nippon Light Metal Co Ltd | Friction/agitation joining tool |
| CN1590003A (en) * | 2003-08-29 | 2005-03-09 | 波音公司 | Apparatus and method for friction stir welding utilizing a grooved pin |
| CN202555967U (en) * | 2012-04-23 | 2012-11-28 | 无锡天野数控装备有限公司 | Novel aluminum alloy tool pin |
| CN102794558A (en) * | 2011-05-27 | 2012-11-28 | 三菱重工业株式会社 | Friction stir welding tool and friction stir welding apparatus |
| CN102848072A (en) * | 2012-09-17 | 2013-01-02 | 江苏科技大学 | Double-shaft-shoulder stirring friction head comprising lower shaft shoulder at adjustable position |
-
2013
- 2013-03-01 CN CN2013100651065A patent/CN103111750A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002224859A (en) * | 2001-01-31 | 2002-08-13 | Nippon Light Metal Co Ltd | Friction stir tool and method for using it |
| JP2002263863A (en) * | 2001-03-08 | 2002-09-17 | Nippon Light Metal Co Ltd | Friction/agitation joining tool |
| CN1590003A (en) * | 2003-08-29 | 2005-03-09 | 波音公司 | Apparatus and method for friction stir welding utilizing a grooved pin |
| CN102794558A (en) * | 2011-05-27 | 2012-11-28 | 三菱重工业株式会社 | Friction stir welding tool and friction stir welding apparatus |
| CN202555967U (en) * | 2012-04-23 | 2012-11-28 | 无锡天野数控装备有限公司 | Novel aluminum alloy tool pin |
| CN102848072A (en) * | 2012-09-17 | 2013-01-02 | 江苏科技大学 | Double-shaft-shoulder stirring friction head comprising lower shaft shoulder at adjustable position |
Non-Patent Citations (1)
| Title |
|---|
| 中国机械工程学会焊接学会: "《焊接手册 焊接方法及设备》", 31 January 2008, 机械工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104588868A (en) * | 2015-02-12 | 2015-05-06 | 江苏烁石焊接科技有限公司 | Double-shaft-shoulder stirring head for metal composite plate welding |
| CN105782561A (en) * | 2016-04-28 | 2016-07-20 | 青岛华涛汽车模具有限公司 | Double-welding rib structure of valve seat assembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103521912B (en) | A kind of friction stir welding tools for lap joint | |
| CN102500915B (en) | Method for filling friction stir welding keyhole by using T-shaped filling block and bitless stirring head | |
| KR101422584B1 (en) | Friction stir welding method | |
| CN104400215A (en) | Stirring head for friction stir overlap welding for reducing size of interface defect and welding method thereof | |
| CN202555967U (en) | Novel aluminum alloy tool pin | |
| CN203471158U (en) | Brazing filler metal welding ring, welding device and production line | |
| CN105108361A (en) | Keyhole-less friction stir welding spot welding device and method | |
| CN103920986A (en) | Stir friction both-side welding method for medium-thickness plate | |
| CN104139240A (en) | Withdrawable double-shaft-shoulder stirring head | |
| CN103071916B (en) | The stirring-head without shaft shoulder friction stir welding of overlap can be reduced | |
| CN106583915A (en) | Novel linear friction welding method and tool | |
| CN104002029B (en) | A kind of improved flat board butt joint submerged-arc welding | |
| CN101934426B (en) | Method for improving plasticity of underwater stir friction welding joint | |
| CN103111750A (en) | Welding joint and method for improving friction stir welding strength | |
| CN104959726B (en) | Stirring friction overlap welding method overcoming Hook defects on advancing side | |
| CN105108359A (en) | Lithium battery electrode friction stir and ultrasonic combined welding method | |
| CN205522475U (en) | Pressfitting hot melt tool | |
| CN113996913A (en) | Stirring head for dip-free friction stir welding | |
| WO2021212650A1 (en) | Key-hole-free friction stir spot welding method | |
| CN104368907A (en) | Novel aluminum alloy plugging rod for plug welding | |
| CN205927496U (en) | Friction stir welding's bonding tool | |
| CN202388119U (en) | Floating spot-welding electrode | |
| KR20130018264A (en) | Connecting element for a friction weld connection for connecting at least two plate-like components | |
| CN105108324A (en) | Metal-plate butt welding test system and method based on friction stir welding | |
| CN204195081U (en) | With the melt-through weld structure of liner plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130522 |