CN106584038A - Filling method for friction stir welding keyhole - Google Patents
Filling method for friction stir welding keyhole Download PDFInfo
- Publication number
- CN106584038A CN106584038A CN201710060555.9A CN201710060555A CN106584038A CN 106584038 A CN106584038 A CN 106584038A CN 201710060555 A CN201710060555 A CN 201710060555A CN 106584038 A CN106584038 A CN 106584038A
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- CN
- China
- Prior art keywords
- keyhole
- friction stir
- stir welding
- filling
- fill method
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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
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Abstract
The invention provides a filling method for a friction stir welding keyhole and belongs to the technical field of friction stir welding. The filling method concretely comprises the following steps: (1) performing reaming treatment of the keyhole, including machining the keyhole into a cylindrical dill hole with a drill bit and ensuring that the keyhole is completely covered by the area of the drill hole; (2) performing data conversion according to a cad model of the drill bit to generate a machining file; and (3) performing additive manufacturing of the drill hole according to the machining file, reclaiming an additive manufacturing material after the additive manufacturing is completed, and machining a surface to a smooth state to finish filling. The filling method provided by the invention realizes filling of the friction stir welding keyhole by an additive manufacturing technology, eliminates the influence of the keyhole on the performance of a weld, meanwhile can ensure an accurate filling process, has high filling efficiency and is applicable to keyholes in various different shapes; and the filling method is simple, can be implemented by conventional equipment and can be applied to industrial batch production.
Description
Technical field：
The invention belongs to agitating friction weldering technical field, and in particular to a kind of fill method of friction stir welding keyhole.
Background technology：
The agitating friction weldering (Friction stir welding, FSW) that Britain's institute of welding was proposed in 1991 is one
Kind new solid phase welding technology, has the advantages that high working efficiency, energy-conservation, pollution-free, welding deformation be little, weldquality is high, in boat
The fields such as empty space flight, automobile, ship, electronics have a wide range of applications object.For convention stir friction welding (FW), rise and can be stayed at weldering
One keyhole, keyhole causes the effective width of weld seam to reduce, mechanical properties decrease.Therefore, keyhole be convention stir friction welding (FW) not
Surmountable " weakness ".
At present, the elimination of friction stir welding keyhole or complementing method have：(1) riveting, is pre-machined keyhole, with rivet chi
Very little cooperation, then rivet riveting is entered into keyhole., to be mechanically connected, rivet is with metal with the presence of gap, and connection effect is poor for the method.(2)
Plug method for brazing, adds solder in keyhole, and using combination type soldering set plug repair welding is carried out, and redundant brazing filler metal is extruded, mixing needle one
Fractionation is in keyhole.But this method adopts half expendable mixing needle, batch machining to need constantly to replace stirring-head, in addition it is also necessary to special
Different design combination type soldering set.(3) melting welding enthesis, is pre-machined keyhole, then carries out material filling melting welding.But this method is only fitted
In aluminium alloy etc. can the good metal of melting welding performance, and residual stress is high at arc-seam weld, and pore is more.(4) special installation (knot
Structure) method, backfill the elimination design that spot-welding equipment, scalable mixing needle etc. are both for keyhole, but these equipment (structure), structure
Complexity is made, the relative motion of mixing needle and peripheral structure is completed, very high machining accuracy and control accuracy is needed.
The content of the invention：
It is an object of the invention to provide a kind of fill method of friction stir welding keyhole, the method is using in increasing material manufacturing
Laser melting and coating technique, realizes the filling of friction stir welding keyhole, and the method is simple to operate, and filling effect is good.
For achieving the above object, the present invention is employed the following technical solutions：
A kind of fill method of friction stir welding keyhole of the present invention, comprises the following steps：
(1) expanding treatment is carried out to keyhole, keyhole is processed as by columned drilling using drill bit, it is ensured that drilling region is complete
All standing keyhole；
(2) according to drill bit cad models, data conversion is carried out, generates processed file；
(3) increasing material manufacturing is carried out to drilling according to processed file, increasing material manufacturing finishes recovery and increases material material, and surface is added
Work completes filling to smooth state.
In described step (1), bore diameter is more than more than keyhole maximum gauge 2mm, and drilling depth is more than keyhole depth
More than 2mm.
In described step (1), bit size is designed according to different mother metal thickness and keyhole size, and is entered into
In cad model libraries.
In described step (1), drill bit for non-expendable, can Reusability, but due to the surface caused mill is used for multiple times
Damage, size need to be remeasured, and update cad models.
In described step (1), drill bit drilling speed is 500～3000r/min.
In described step (2), the generating process of processed file is：According to the drill bit cad models of advance typing, by its turn
Stl models are changed to, are positioned, it is determined that manufacture depth, and scanning pattern is defined, ultimately generate processed file；
In described step (3), increasing material manufacturing mode is laser melting coating.
In described step (3), laser cladding process parameter is：Laser power is 1000～2200W, and scanning speed is 2
～8mm/s.
In described step (3), it is thread or pulverulence to increase material material, and it is consistent with mother metal to increase material material, or for other
The single or mixed-powder material that can be fused with mother metal, purpose is to strengthen the performance at keyhole filling.
Beneficial effects of the present invention：
(1) fill method of the invention realizes the filling of friction stir welding keyhole using increases material manufacturing technology, eliminates
The impact of keyhole properties of weld.
(2) fill method of the invention is filled up using laser melting and coating technique, ensure that filling in process is precisely errorless,
Good connecting effect, is suitable for the filling of various metals keyhole.
(3) equipment that fill method of the invention is adopted need not can be completed by somewhat complex design, market existing equipment.
(4) fill method of the invention, because drill bit is consistent during reaming, can use a set of program for the keyhole of different-shape
Complete, charging efficiency is high, can be used for industrialized mass production.
Description of the drawings：
Fig. 1 is filling process schematic diagram of the present invention, wherein：
Figure (a) is reaming procedure schematic diagram, wherein：1- mother metals, 2- alloy bits, 3- keyholes, D1- keyhole maximum gauges,
D2- alloy bit diameters；
Figure (b) is view after reaming；
Figure (c) is view after filling, wherein：4- laser instrument, 5- fillings region.
Specific embodiment：
With reference to embodiment, the present invention is described in further detail.
Embodiment 1
A kind of fill method of friction stir welding keyhole, its filling process schematic diagram is as shown in figure 1, comprise the following steps：
(1) carry out expanding treatment to keyhole 3, reaming procedure schematic diagram as schemed shown in (a), using alloy bit 2 by keyhole 3
Columned drilling is processed as, according to keyhole maximum dimension D 1, corresponding alloy bit 2 is selected, the diameter D2 of alloy bit 2 is big
In more than D1 2mm, and it is entered in cad model libraries, the drilling speed of alloy bit 2 is 500r/min, the bore diameter for machining is big
In more than the 2mm of keyhole maximum dimension D 1, drilling depth is more than more than keyhole depth 2mm, it is ensured that drilling region is completely covered keyhole
3, view is as schemed shown in (b) after reaming；
(2) according to the cad models of the alloy bit 2 of the D2 sizes of advance typing, stl models are converted into, it is fixed to carry out
Position, it is determined that manufacture depth, and scanning pattern is defined, ultimately generate processed file；
(3) according to processed file, laser melting coating is carried out using 4 pairs of drillings of laser instrument, cladding material is and the identical of mother metal 1
Dusty material, laser power is 1000W, and scanning speed is 2mm/s, and laser melting coating finishes recovery powder cladding material, and
By surface machining to smooth and beautiful appearance state, filling is completed, form filling region 5, view is as schemed (c) institute after filling
Show.
Embodiment 2
A kind of fill method of friction stir welding keyhole, its filling process schematic diagram is as shown in figure 1, comprise the following steps：
(1) carry out expanding treatment to keyhole 3, reaming procedure schematic diagram as schemed shown in (a), using alloy bit 2 by keyhole 3
Columned drilling is processed as, according to keyhole maximum dimension D 1, selects corresponding alloy bit 2, alloy bit diameter D2 to be more than
More than D12mm, and be entered in cad model libraries, when alloy bit 2 is used for multiple times the surface abrasion for causing, remeasure alloy
The size of drill bit 2, and cad models are updated, the drilling speed of alloy bit 2 is 3000r/min, and the bore diameter for machining is more than keyhole most
More than major diameter D1 2mm, drilling depth is more than more than keyhole depth 2mm, it is ensured that drilling region is completely covered keyhole 3, after reaming
View is as schemed shown in (b)；
(2) according to the cad models of the alloy bit 2 of the D2 sizes of advance typing, stl models are converted into, it is fixed to carry out
Position, it is determined that manufacture depth, and scanning pattern is defined, ultimately generate processed file；
(3) according to processed file, laser melting coating is carried out using 4 pairs of drillings of laser instrument, cladding material is mutually to melt with mother metal 1
The single or mixing filamentary material for closing, laser power is 2200W, and scanning speed is 8mm/s, and it is thread molten that laser melting coating finishes recovery
Material is covered, and by surface machining to smooth and beautiful appearance state, completes filling, form filling region 5, view after filling
As shown in figure (c).
Claims (7)
1. a kind of fill method of friction stir welding keyhole, it is characterised in that comprise the following steps：
(1) expanding treatment is carried out to keyhole, keyhole is processed as by columned drilling using drill bit, it is ensured that covered completely in drilling region
Lid keyhole；
(2) according to drill bit cad models, data conversion is carried out, generates processed file；
(3) increasing material manufacturing is carried out to drilling according to processed file, increasing material manufacturing is finished to reclaim and increases material material, and by Surface Machining extremely
Smooth state, completes filling.
2. the fill method of friction stir welding keyhole according to claim 1, it is characterised in that in described step (1),
Bore diameter is more than more than keyhole maximum gauge 2mm, and drilling depth is more than more than keyhole depth 2mm.
3. the fill method of friction stir welding keyhole according to claim 1, it is characterised in that in described step (1),
Drill bit drilling speed is 500～3000r/min.
4. the fill method of friction stir welding keyhole according to claim 1, it is characterised in that in described step (2),
The generating process of processed file is：According to the drill bit cad models of advance typing, stl models are converted into, are positioned, really
Depth is made in customization, and defines scanning pattern, ultimately generates processed file.
5. the fill method of friction stir welding keyhole according to claim 1, it is characterised in that in described step (3),
Increasing material manufacturing mode is laser melting coating.
6. the fill method of friction stir welding keyhole according to claim 5, it is characterised in that in described step (3),
Laser cladding process parameter is：Laser power is 1000～2200W, and scanning speed is 2～8mm/s.
7. the fill method of friction stir welding keyhole according to claim 1, it is characterised in that in described step (3),
It is thread or pulverulence to increase material material, increases that material material is consistent with mother metal, or for other can be fused single of mother metal or
Mixed-powder material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710060555.9A CN106584038A (en) | 2017-01-25 | 2017-01-25 | Filling method for friction stir welding keyhole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710060555.9A CN106584038A (en) | 2017-01-25 | 2017-01-25 | Filling method for friction stir welding keyhole |
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| Publication Number | Publication Date |
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| CN106584038A true CN106584038A (en) | 2017-04-26 |
Family
ID=58585480
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710060555.9A Pending CN106584038A (en) | 2017-01-25 | 2017-01-25 | Filling method for friction stir welding keyhole |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109261965A (en) * | 2018-11-09 | 2019-01-25 | 成都青石激光科技有限公司 | A kind of plugging technology of turbine buckets of gas turbine piece cover board apical pore |
| CN111590205A (en) * | 2019-02-19 | 2020-08-28 | 三菱重工业株式会社 | Fused material manufacturing method, fused material manufacturing system, and fused material |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500915A (en) * | 2011-11-08 | 2012-06-20 | 西安交通大学 | Method for filling friction stir welding keyhole by using T-shaped filling block and bitless stirring head |
| CN102641960A (en) * | 2012-05-03 | 2012-08-22 | 山东大王金泰集团有限公司 | Manufacture method of hot stamping mould cavity |
| CN104233285A (en) * | 2013-06-10 | 2014-12-24 | 卡特彼勒公司 | method of remanufacturing a seal surface |
| CN105269269A (en) * | 2015-11-18 | 2016-01-27 | 华中科技大学 | Manufacturing method for metal additive materials of ultra-large draw ratio deep-hole type components |
| CN105598449A (en) * | 2016-01-08 | 2016-05-25 | 燕山大学 | Three-dimensional printing method of metal sample containing built-in inclusion |
| CN106238902A (en) * | 2016-08-25 | 2016-12-21 | 上海航天设备制造总厂 | A kind of friction stir welding keyhole complementing method |
-
2017
- 2017-01-25 CN CN201710060555.9A patent/CN106584038A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102500915A (en) * | 2011-11-08 | 2012-06-20 | 西安交通大学 | Method for filling friction stir welding keyhole by using T-shaped filling block and bitless stirring head |
| CN102641960A (en) * | 2012-05-03 | 2012-08-22 | 山东大王金泰集团有限公司 | Manufacture method of hot stamping mould cavity |
| CN104233285A (en) * | 2013-06-10 | 2014-12-24 | 卡特彼勒公司 | method of remanufacturing a seal surface |
| CN105269269A (en) * | 2015-11-18 | 2016-01-27 | 华中科技大学 | Manufacturing method for metal additive materials of ultra-large draw ratio deep-hole type components |
| CN105598449A (en) * | 2016-01-08 | 2016-05-25 | 燕山大学 | Three-dimensional printing method of metal sample containing built-in inclusion |
| CN106238902A (en) * | 2016-08-25 | 2016-12-21 | 上海航天设备制造总厂 | A kind of friction stir welding keyhole complementing method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109261965A (en) * | 2018-11-09 | 2019-01-25 | 成都青石激光科技有限公司 | A kind of plugging technology of turbine buckets of gas turbine piece cover board apical pore |
| CN111590205A (en) * | 2019-02-19 | 2020-08-28 | 三菱重工业株式会社 | Fused material manufacturing method, fused material manufacturing system, and fused material |
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Application publication date: 20170426 |