CN106001906B - A kind of step structure weld seam friction stir welding method - Google Patents
A kind of step structure weld seam friction stir welding method Download PDFInfo
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- CN106001906B CN106001906B CN201610532994.0A CN201610532994A CN106001906B CN 106001906 B CN106001906 B CN 106001906B CN 201610532994 A CN201610532994 A CN 201610532994A CN 106001906 B CN106001906 B CN 106001906B
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- weld seam
- step structure
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- thin
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- 238000000034 method Methods 0.000 title claims abstract description 65
- 238000003466 welding Methods 0.000 title claims abstract description 60
- 238000003756 stirring Methods 0.000 title claims abstract description 17
- 238000003801 milling Methods 0.000 claims abstract description 12
- 239000011324 bead Substances 0.000 claims description 8
- 238000005498 polishing Methods 0.000 claims description 7
- 230000007704 transition Effects 0.000 claims description 7
- 230000004927 fusion Effects 0.000 claims description 4
- 238000009966 trimming Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 3
- 238000012797 qualification Methods 0.000 abstract description 3
- 238000004021 metal welding Methods 0.000 abstract description 2
- 238000004140 cleaning Methods 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- B23K20/24—Preliminary treatment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention belongs to metal welding fields, and in particular to arrive a kind of step structure weld seam friction stir welding method.Step structure weld seam friction stir welding method of the present invention, is reserved with process allowance at step structure, when welding, the welding of step structure thick-layer is first carried out, thick weld seam has been welded, has then milled process allowance, it is concordant with step structure thin layer to make it, then welds thin weld seam from the weld seam after milling.The method of the present invention eliminates technique test piece, the danger splashed is generated when reducing auxiliary material, save the time of repair technique test piece, while eliminating mill off technique test piece, the stability that ensure that the welding quality of weld seam simultaneously, improves part qualification rate and production efficiency；Secondly, realizing the versatility of tooling present invention optimizes welding sequence, tooling manufacturing cost is reduced, relatively existing welding technique has significant technological progress, has biggish practical application value.
Description
Technical field
The invention belongs to metal welding fields, and in particular to arrive a kind of step structure weld seam friction stir welding method.
Background technique
When the prior art carries out the Friction Stir Welding of step structure weld seam, connect two thickness by processing skill test piece at step
It is contour to meet place, technique test piece and the same state of part, and repair is carried out to technique test piece and thick weld seam joint, first to thin weld seam into
Two pieces of good technique test pieces of repair, are then pressed on thin weld seam by row welding, thick weld seam are welded, finally again by the technique test piece
And process allowance removal.The method is first in the welding process because the limitation of part shape to be welded makes gasket be not easy to compress and hold
It is also easy to produce displacement, gently then causes welding defect, heavy then lead to part rejection, welding quality unstable；Secondly the technique after polishing
Test piece needs are bonded well at step, therefore very high to the polishing of gasket requirement, this process needs take a long time, raw
Produce low efficiency.
Summary of the invention
Goal of the invention: a kind of step structure weld seam agitating friction that can effectively improve welding efficiency and welding quality is provided
Welding method.
Technical solution: a kind of step structure weld seam friction stir welding method is reserved with more than technique at step structure
Amount first carries out the welding of step structure thick-layer, has welded thick weld seam, has then milled process allowance, keeps it flat with step structure thin layer
Together, then from the weld seam after milling thin weld seam is welded.
The step structure weld seam friction stir welding method, the specific steps of which are as follows:
Step 1: the part thickness welding machine added-time reserves welding procedure surplus；
Step 2: surface clean；
Step 3: fixed clamping；
Step 4: being carried out against thin bead direction to thick weld seam on step structure thick-layer from abrupt changes in thickness end as starting point
Welding；
Step 5: thick fusion length direction process allowance is removed with milling cutter, so that the step structure thick-layer and step structure
Thin layer uniform thickness, so that thickness weld seam becomes the transition weld seam with thin weld seam uniform thickness at this；
Step 6: since the surplus area transition weld seam contour with step structure thin layer to thin bead direction to thin weld seam into
Part welding is completed in row welding；
Step 7: removal part process surplus.
It is more than the weld seam of 1m for length, is corrected with idler wheel, and trimming of polishing.
The process allowance reserved at step structure is 50mm~150mm along bead direction length.
The utility model has the advantages that step structure weld seam friction stir welding method of the present invention eliminates technique test piece, reduce auxiliary
Material saves time and the process of repair technique test piece, shortens the production cycle；Secondly, simplifying welding sequence, realize
The versatility of tooling reduces tooling manufacturing cost；Again, new process guarantees the stability of weldquality, improves life
Yield and quality and efficiency.
Detailed description of the invention
Fig. 1 is the process flow chart of step structure weld seam friction stir welding method of the present invention；
Fig. 2 is thick weld seam welding schematic diagram, is welded from the point position A along inverse course direction to weld seam 1；
Fig. 3 is thin weld seam welding schematic diagram, is welded from the point position B along course direction to weld seam 2.
Specific embodiment
Below with reference to example, the invention will be described in further detail.
Step structure weld seam friction stir welding method of the present invention, is reserved with process allowance at step structure, when welding,
The welding of step structure thick-layer is first carried out, thick weld seam has been welded, has then milled process allowance, keep it concordant with step structure thin layer,
Thin weld seam is welded from the weld seam after milling again.
Referring to Fig. 1, step structure weld seam friction stir welding method of the present invention, comprising the following steps:
Step 1: the part thickness welding machine added-time reserves welding procedure surplus: the part machine added-time provides processing between machine extra bus
Process allowance area is reserved when drawing, to solve the problems, such as the Friction Stir Welding of part step structure.
Step 2: surface clean: before parts fixation, treating weld ddge with industrial alcohol and carry out oil removing, use stainless steel after oil removing
The oxidation film of brush cleaning part welding surface, cleaning width are not less than 20mm, are cleaned again with industrial alcohol after oxide film dissolving.
Step 3: fixed clamping: part is placed on the universal fixture fixture cleaned out after clearing up to be determined
Position clamping measures part gap after compacting loads, and guarantees that butt-joint clearance is not more than 0.2mm.
Step 4: carrying out prewelding to thick weld seam: prewelding stirring-head being selected to carry out prewelding as starting point from abrupt changes in thickness end.
Step 5: formal weld thick weld seam: the formal stirring-head for selecting suitable needle long is according to thick throat depth with step end
It is formally welded for starting point.
Step 6: removing thick fusion length direction process allowance with milling cutter: after the completion of thick weld seam welding, to be whole at step
Point end, thick weld seam process allowance is removed with milling cutter so that at this thick weld seam milling to thin weld seam uniform thickness, as subsequent
The transition weld seam of welding, in addition, the process allowance reserved at step structure is 50mm~150mm along bead direction length, preferably
100mm, it is too long to avoid the too short influence welding stability of transition weld seam, increase the workload of process allowance removal；
Step 7: the thin weld seam of prewelding: prewelding stirring-head is selected, using the B point of the surplus area transition weld seam after milling as starting
Point carries out prewelding to thin weld seam.
Step 8: formally welding thin weld seam: selecting the long stirring-head of suitable needle, carried out just along the direction of prewelding to thin weld seam
Part welding is completed in formula welding.
Step 9: correcting and trimming of polishing: for longer weld seam, along the opposite direction idler wheel of welding after welding
Postwelding correction is carried out, trimming of polishing.
Step 10: removal surplus: machine adds removal part process surplus.
In certain embodiment: certain 7050 part of engineering aircraft sloping platform floor, floor or so part respectively have step weld seam (i.e. one
There are two different thickness on weld seam), thickness is respectively 2.5mm and 3.8mm.After completing oil removing polishing cleaning to part,
Fixed clamping parts, measure the butt-joint clearance of part after installing, and guarantee that gap less than 0.2, is then with A point in Fig. 2
Starting point carries out prewelding to 3.8mm thickness weld seam along inverse course direction, and pre- postwelding selects suitable needle length according to actual parts thickness
Formal stirring-head, thick weld seam remove the process allowance area for being about 50mm of part requirements with milling cutter after welding, milling is thick to 2.5mm,
With thin weld seam uniform thickness；Using B point in Fig. 3 at step as starting point, 2.5mm thickness weld seam is carried out with prewelding stirring-head along course direction
Prewelding；The stirring-head for selecting suitable needle long weld seam of facing a charge formally is welded, and is completed part and is welded；About due to thin fusion length
5000mm guarantees that pressure is no more than 1KN so carrying out rolling correction with pair of rollers weld seam, polish to weld seam after rolling clear
It washes；Progress X-ray detection result complies fully with related mark and requires, and is machined out skill surplus by design drawing after qualification
It removes, be smoothly delivered for use part.
The method of the present invention eliminates technique test piece in summary, reduces auxiliary material, saves repair technique test piece
Time, while while eliminating mill off technique test piece, generates the danger splashed, while ensure that the stability of the welding quality of weld seam,
Improve part qualification rate and production efficiency；Secondly, realizing the versatility of tooling present invention optimizes welding sequence, reduce
Tooling manufacturing cost, relatively existing welding technique have significant technological progress, have biggish practical application value.
Claims (4)
1. a kind of step structure weld seam friction stir welding method, which is characterized in that process allowance is reserved at step structure,
First carry out the welding of step structure thick-layer, on step structure thick-layer from abrupt changes in thickness end as starting point against thin bead direction to thickness
Weld seam is welded, and has been welded thick weld seam, has then been milled process allowance, it is concordant with step structure thin layer to make it, then after milling
Weld seam plays the thin weld seam of welding.
2. step structure weld seam friction stir welding method according to claim 1, which is characterized in that
Specific step is as follows:
Step 1: the part thickness welding machine added-time reserves welding procedure surplus；
Step 2: surface clean；
Step 3: fixed clamping；
Step 4: being welded against thin bead direction to thick weld seam on step structure thick-layer from abrupt changes in thickness end as starting point
It connects；
Step 5: the thicknesses processes surplus in thick fusion length direction is removed with milling cutter, so that the step structure thick-layer and Step-edge Junction
Structure thin layer uniform thickness, so that thickness weld seam becomes the transition weld seam with thin weld seam uniform thickness at this；
Step 6: being welded to thin bead direction to thin weld seam since the surplus area transition weld seam contour with step structure thin layer
It connects, completes part welding；
Step 7: removal part process surplus.
3. step structure weld seam friction stir welding method according to claim 2, which is characterized in that
It is more than the weld seam of 1m for length, is corrected with idler wheel, and trimming of polishing.
4. step structure weld seam friction stir welding method according to claim 2, which is characterized in that pre- at step structure
The process allowance stayed is 50mm~150mm along bead direction length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610532994.0A CN106001906B (en) | 2016-07-08 | 2016-07-08 | A kind of step structure weld seam friction stir welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610532994.0A CN106001906B (en) | 2016-07-08 | 2016-07-08 | A kind of step structure weld seam friction stir welding method |
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| Publication Number | Publication Date |
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| CN106001906A CN106001906A (en) | 2016-10-12 |
| CN106001906B true CN106001906B (en) | 2019-01-01 |
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| CN108526678B (en) * | 2017-03-06 | 2019-11-15 | 陕西飞机工业（集团）有限公司 | A kind of stirring friction-welding technique method of Z-type weld seam |
| CN110434450A (en) * | 2019-05-29 | 2019-11-12 | 陕西飞机工业（集团）有限公司 | A kind of Friction stir welding method of step type weld seam |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10063920C2 (en) * | 2000-12-20 | 2003-01-16 | Thyssenkrupp Stahl Ag | Method for joining two workpieces from a material that can be plasticized by heating, in particular metal, in particular in the form of metal sheets, in the butt joint |
| CN103842123A (en) * | 2011-09-30 | 2014-06-04 | 通用电气公司 | Method of and apparatus for repairing an aircraft component by using a patch friction stir welded to the component |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3931118B2 (en) * | 2002-07-08 | 2007-06-13 | 本田技研工業株式会社 | Butt joint manufacturing method, friction stir welding method, and friction stir welding apparatus |
| JP2007222933A (en) * | 2006-02-27 | 2007-09-06 | Hitachi Ltd | Friction stir welding method |
| CN103008870A (en) * | 2012-11-28 | 2013-04-03 | 上海交通大学 | Method for friction stir welding for dissimilar materials (i.e., slender thin-wall circular pipes) |
| CN103071916B (en) * | 2013-02-06 | 2015-10-07 | 南京航空航天大学 | The stirring-head without shaft shoulder friction stir welding of overlap can be reduced |
| JP6052232B2 (en) * | 2014-01-27 | 2016-12-27 | 日本軽金属株式会社 | Joining method |
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2016
- 2016-07-08 CN CN201610532994.0A patent/CN106001906B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10063920C2 (en) * | 2000-12-20 | 2003-01-16 | Thyssenkrupp Stahl Ag | Method for joining two workpieces from a material that can be plasticized by heating, in particular metal, in particular in the form of metal sheets, in the butt joint |
| CN103842123A (en) * | 2011-09-30 | 2014-06-04 | 通用电气公司 | Method of and apparatus for repairing an aircraft component by using a patch friction stir welded to the component |
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| CN106001906A (en) | 2016-10-12 |
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Address after: 723213 Liulin Town, Chenggu County, Hanzhong City, Shaanxi Province Patentee after: Shaanxi Aircraft Industry Co.,Ltd. Address before: Box 34, Hanzhong City, Shaanxi Province, 723213 Patentee before: Shaanxi Aircraft INDUSTRY(GROUP) Co.,Ltd. |
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