CN103212782A - Enhancement blowing-half-dry type underwater friction stir soldering set - Google Patents
Enhancement blowing-half-dry type underwater friction stir soldering set Download PDFInfo
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- CN103212782A CN103212782A CN201310157857XA CN201310157857A CN103212782A CN 103212782 A CN103212782 A CN 103212782A CN 201310157857X A CN201310157857X A CN 201310157857XA CN 201310157857 A CN201310157857 A CN 201310157857A CN 103212782 A CN103212782 A CN 103212782A
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- agitating friction
- friction stir
- dry type
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Abstract
The invention discloses an enhancement blowing-half-dry type underwater friction stir soldering set which comprises a columnar friction stir head, a drive gear coaxially and fixedly connected on the friction stir head, a terminal gear connected on the friction stir head in a sleeved mode through a bearing bush, a transmission gear, fan blades and an air cover. The transmission gear comprises a large gear and a small gear, wherein the large gear and the small gear are coaxial, the diameter of the large gear is larger than that of the small gear, the small gear is meshed with the drive gear, and the large gear is meshed with the terminal gear at the same time. The fan blades are arranged on the terminal gear and rotate along with the terminal gear, the air cover is arranged on the outer side of the friction stir head, and the fan blades are wrapped into an inner cavity of the air cover. An additional compressed air source is not needed, by utilizing a device of the friction stir head and double-stage transmission speed increasing of revolving speed of the fan blades, partial air environment nearby a soldering position is formed, moisture is effectively prevented from entering into a welding joint, and an adapting range of the revolving speed of the friction stir head by the soldering set can be large.
Description
Technical field
The invention belongs to technologic material processing welding technology field, relate in particular to water cooling agitating friction welder.
Background technology
Friction stir welding (FSW) has obtained extensive studies and application since TWI invention in 1991, particularly with the obvious advantage aspect aluminium, magnesium and the alloy welding thereof of the easy oxidation of low melting point, and obtain broad research in the fields such as welding of copper, titanium, composite and foreign material and apply.But stir friction welding process essence is inhomogeneous, unstable, dynamic thermodynamics, plastic flow and heat transfer, mass transfer and a phase transition process, fundamentally cause asymmetric, the non-homogeneous and noncontinuity of connector temperature, rheology, tissue and performance, joint is many to be destroyed and causes the decline of strength of joint coefficient because of " weak connection " thereby make.
In order to solve " weak connection " phenomenon, there is a lot of scholars and researcher research to come to the weld seam cooling, thereby improved intensity, hardness and whole uniformity that FSW welds each layer by the measure of water logging or water smoke cooling; Or adopt dynamic control low stress not have distortion welding principle, and relate to the water atomization heat-sink system, control the thermoplasticity stress-strain field of FSW process to a certain extent.
But all there are weak point in water logging and water smoke cooling, and that makes welding operation become complicated more exactly, and even more serious is easily to produce to inhale hydrogen defect and corrosion, has influenced quality of weld joint.
Therefore seek and a kind ofly can bring into play the water cooling effect, can avoid inhaling the measure or the device of hydrogen defect and corrosion again, become a new vital task.
Summary of the invention
Goal of the invention: at the problem and shortage of above-mentioned existing existence, the purpose of this invention is to provide a kind of enhancement mode-half dry type agitating friction soldering set under water, in the water logging cooling, strengthen air-flow thrust by multistage transmission, can realize carrying out agitating friction under the local draining leather hard, thereby avoid inhaling hydrogen and perishable defective.
Technical scheme: for achieving the above object, the present invention is by the following technical solutions: a kind of enhancement mode air blowing-half dry type is the agitating friction soldering set under water, comprise column the agitating friction head, coaxially be fixed in driving gear on this agitating friction head, be connected on extreme gear and travelling gear, fan blade and gas hood on this agitating friction head by bearing holder (housing, cover), described travelling gear comprises coaxial gear wheel and pinion, and the gear wheel diameter is greater than pinion, wherein pinion and driving gear engagement, gear wheel meshes with extreme gear simultaneously; Described fan blade is located on the extreme gear and with extreme gear and rotates; Described gas hood is located at the agitating friction head outside, and fan blade is entrained into the internal cavities of gas hood.
Further improve, described gas hood is a type structure wide at the top and narrow at the bottom, inwall is affixed by support and agitating friction head, thereby more favourable gas flow guiding effect, strengthening the interior air of gas hood flows, raising is to the outflow of gas hood radius inner region water, thereby forms the local air environment that is beneficial to welding around the agitating friction head.
Further, described gas hood bottom is connected with at the bottom of the arc cover, the arc opening at the bottom of this arc cover outwardly, thereby help the outflow of water, form the local air environment.
Further, also comprise gear shaft, described travelling gear is connected on this gear shaft by bearing holder (housing, cover).
As preferably, the axis parallel of described agitating friction head and gear shaft, thus help Unit Installation and smooth operation.
Further, the outermost end of described agitating friction head is socketed with locking nut, and driving gear is compressed, thereby effectively avoids driving gear moving axially on the agitating friction head.
Beneficial effect: compared with prior art, the present invention has the following advantages: this is a kind of new-type agitating friction soldering set, does not need extra compressed air source, utilizes the device of agitating friction head self can form the local air environment near the welding position; The local air environment that forms can effectively avoid moisture to enter weld seam, and this helps further improving welding quality; Because blade rotational speed obtains after by the two-stage transmission amplifying, and it is enhanced to air push power in the gas hood, it is bigger to the accommodation of agitating friction head rotating speed that this helps soldering set; Simple in structure, practical., easily realization and easy to assembly less, with low cost with the agitating friction head member that this enhancement mode air blowing-half dry type welds under water, this has important practical significance for promoting with application.
Description of drawings
Fig. 1 is the enhancement mode air blowing-half dry type of the present invention structural representation of agitating friction soldering set under water;
Fig. 2 is the structural representation of agitating friction head of the present invention.
Wherein, at the bottom of agitating friction head 1, driving gear 2, extreme gear 3, pinion 4, gear wheel 5, fan blade 6, gas hood 7, the arc cover 8, locking nut 9, gear shaft 10, upper bracket 11, lower carriage 12, welded piece 13, liquid level 14.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the present invention, should understand these embodiment only is used to the present invention is described and is not used in and limit the scope of the invention, after having read the present invention, those skilled in the art all fall within the application's claims institute restricted portion to the modification of the various equivalent form of values of the present invention.
Shown in Fig. 1～2, a kind of enhancement mode air blowing-half dry type is the agitating friction soldering set under water, comprise column agitating friction head 1, coaxially be fixed in driving gear 2 on this agitating friction head 1, be connected on extreme gear 3 and travelling gear, fan blade 6 and gas hood 7 on this agitating friction head 1 by bearing holder (housing, cover), wherein agitating friction head 1 can be made by the high-speed steel or the heat resisting steel of routine, and fan blade 6 is made by alloy in lightweight or plastics; Gas hood 7 has alloy in lightweight or transparent organic glass cover to make, and geared parts is made by plastics or metal material.The FSW-3LM series that friction stir welding machine can select for use Chinese friction stir welding center to produce.
Described agitating friction head 1 has two steps, is respectively applied for driving gear 2 and extreme gear 3 are installed, and is installed between driving gear 2 and the extreme gear 3 with axle sleeve simultaneously.Wherein fixedly connected and synchronous rotation by key between driving gear 2 and the agitating friction head 1, successively extreme gear 3 and driving gear 2 installation sleeves are connected on the agitating friction head 1, prevent its axial displacement by locking screw order 9 locking driving gears 2 then.
Described travelling gear comprises coaxial gear wheel 5 and pinion 4, and the diameter of gear wheel 5 is greater than pinion 4, they be one and by bearing and gear shaft 10 sockets, wherein pinion 4 meshes with driving gear 2, gear wheel 5 meshes with extreme gear 3 simultaneously, and fan blade 6 is installed on the extreme gear 3 and rotation thereupon.For easy for installation and spin stabilization, the axis parallel of gear shaft 10 and agitating friction head 1 (in fact also can adopt angular wheel between driving gear 2 and extreme gear 3 and the travelling gear).
Gas hood 7 adopts cup-shaped structure wide at the top and narrow at the bottom, and utilizes upper bracket 11 and lower carriage 12 to be fixed on the agitating friction head 1, and welding is that gas hood 7 rotates synchronously with agitating friction head 1; Simultaneously at the bottom of the bottom of gas hood 7 connects the arc cover 8,8 opening more helps the discharge of air-flow outwardly at the bottom of this arc cover.
During installation, agitating friction head 1 links to each other with the output shaft of friction stir welding machine head, on then also fixing by the installing hole head with friction stir welding machine of gear shaft 10.
When beginning to weld, the rotation of the output shaft of friction stir welding machine drives 1 rotation of agitating friction head, driving gear 2 is rotation synchronously also, driving gear 2 drives pinion 4 and gear wheel 5 rotations, and gear wheel 5 drives extreme gear 3 rotations, and extreme gear 3 drives fan blade 6 rotations; Through after the above-mentioned two-stage transmission, the rotating speed of fan blade 6 is much larger than the rotating speed of agitating friction head 1, promptly utilize less welding rotating speed can produce bigger fan blade 6 rotating speeds, thereby make mobile being enhanced of air in the gas hood 7, under the promotion that flows to the gas below the agitating friction head 1, current air leaving cover 7 in the gas hood 7, thus a local air environment that helps welding around agitating friction head 1, formed.
This agitating friction soldering set is when work, and the direction of rotation that makes blade produce downdraught promptly is the direction of rotation of agitating friction head 1; Simultaneously in order to guarantee that welding region forms air ambient, when not welding, liquid level 14 can not be too high, can only be a little more than at the bottom of the arc cover 8.Because the temperature very high (can reach 600 degrees centigrade) in agitating friction welding district, remaining in welded piece 13 is vaporized rapidly with the water droplet of agitating friction head 1 contact position, under the air-flow of flowing through drives, be discharged from gas hood 7 rapidly, thus the air ambient that keeps dry in the assurance welding region.
Enhancement mode air blowing-half dry type of the present invention welds with the assembling sequence of agitating friction soldering set as follows under water: (1) is installed on extreme gear on the agitating friction head by bearing, and axle sleeve is installed above it; (2) driving gear is fastenedly connected by key and agitating friction head; (3) use locking nut in addition fastening, to stop the axial displacement of driving gear; (4) pinion and gear wheel are installed on the gear shaft by bearing, and gear shaft then can be fixed on the head of friction stir welding machine by installing hole; (4) the agitating friction head is linked to each other with the output shaft of friction stir welding machine, make the engagement of driving gear and intermediate speed pinion, pinion links to each other with gear wheel and is integral, gear broad in the middle and extreme gear engagement; (5) fan blade is installed on the axial jag of extreme gear; (6) by upper bracket, lower carriage gas hood is fixed on the agitating friction head, thereby finishes the assembling of soldering set.
Enhancement mode air blowing-half dry type of the present invention welds main use flow process and the step with the agitating friction soldering set under water:
(1) finish assembling according to said sequence after, welded piece 13 is fixed in the water, the degree of depth in water with agitating friction head 1 in next step enter in the water back, liquid level 14 a little more than the arc cover at the bottom of 8.
(2) welder head moves downward, and agitating friction head 1 is immersed in the water gradually, liquid level 14 a little more than the arc cover at the bottom of 8;
(4) start welding machine master motor, make 1 rotation of agitating friction head;
(5) after water is blown sky in the gas hood 7, can formally begin welding;
(6) after welding finishes, cause agitating friction head 1 to be bonded on the welded piece 13 too soon in order to prevent water cooling, need promote gradually and continue to rotate agitating friction head 1, after a period of time, the welding of stopping the rotation finishes.
Claims (6)
1. enhancement mode air blowing-half dry type agitating friction soldering set under water, it is characterized in that: comprise column the agitating friction head, coaxially be fixed in driving gear on this agitating friction head, be connected on extreme gear and travelling gear, fan blade and gas hood on this agitating friction head by bearing holder (housing, cover), described travelling gear comprises coaxial gear wheel and pinion, and the gear wheel diameter is greater than pinion, wherein pinion and driving gear engagement, gear wheel meshes with extreme gear simultaneously; Described fan blade is located on the extreme gear and with extreme gear and rotates; Described gas hood is located at the agitating friction head outside, and fan blade is entrained into the internal cavities of gas hood.
2. according to the described enhancement mode air blowing-half dry type of claim 1 agitating friction soldering set under water, it is characterized in that: described gas hood is a type structure wide at the top and narrow at the bottom, and inwall is affixed by support and agitating friction head.
3. according to the described enhancement mode air blowing-half dry type of claim 2 agitating friction soldering set under water, it is characterized in that: described gas hood bottom is connected with at the bottom of the arc cover, and the arc opening at the bottom of this arc cover outwardly.
4. according to the described enhancement mode air blowing-half dry type of claim 3 agitating friction soldering set under water, it is characterized in that: also comprise gear shaft, described travelling gear is connected on this gear shaft by bearing holder (housing, cover).
5. according to the described enhancement mode air blowing-half dry type of claim 4 agitating friction soldering set under water, it is characterized in that: the axis parallel of described agitating friction head and gear shaft.
6. according to the described enhancement mode air blowing-half dry type of claim 5 agitating friction soldering set under water, it is characterized in that: the outermost end of described agitating friction head is socketed with locking nut, and driving gear is compressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310157857.XA CN103212782B (en) | 2013-04-28 | 2013-04-28 | Enhancement blowing-half-dry type underwater friction stir soldering set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310157857.XA CN103212782B (en) | 2013-04-28 | 2013-04-28 | Enhancement blowing-half-dry type underwater friction stir soldering set |
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| Publication Number | Publication Date |
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| CN103212782A true CN103212782A (en) | 2013-07-24 |
| CN103212782B CN103212782B (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310157857.XA Expired - Fee Related CN103212782B (en) | 2013-04-28 | 2013-04-28 | Enhancement blowing-half-dry type underwater friction stir soldering set |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985318A (en) * | 2015-06-30 | 2015-10-21 | 苏州华日金菱机械有限公司 | Cold welding method |
| CN106624258A (en) * | 2017-01-20 | 2017-05-10 | 华南理工大学 | Miniature drainage cover for local dry welding underwater robot of double-airflow structure |
| CN108406087A (en) * | 2018-05-21 | 2018-08-17 | 广东省焊接技术研究所（广东省中乌研究院） | A kind of agitating friction welder and welding method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002248583A (en) * | 2001-02-26 | 2002-09-03 | Hitachi Ltd | Method and device for friction stir working |
| KR20040056528A (en) * | 2002-12-24 | 2004-07-01 | 재단법인 포항산업과학연구원 | Welding apparatus having a gas cooling means |
| CN101554681A (en) * | 2009-05-15 | 2009-10-14 | 哈尔滨工业大学 | Pin tool suitable for local dry-type friction stir welding in water environment |
| CN102950377A (en) * | 2012-11-23 | 2013-03-06 | 北京石油化工学院 | Local dry-type underwater friction stitch welding device |
| JP2013049060A (en) * | 2011-08-30 | 2013-03-14 | Mitsubishi Heavy Ind Ltd | Friction stir welding execution method |
-
2013
- 2013-04-28 CN CN201310157857.XA patent/CN103212782B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002248583A (en) * | 2001-02-26 | 2002-09-03 | Hitachi Ltd | Method and device for friction stir working |
| KR20040056528A (en) * | 2002-12-24 | 2004-07-01 | 재단법인 포항산업과학연구원 | Welding apparatus having a gas cooling means |
| CN101554681A (en) * | 2009-05-15 | 2009-10-14 | 哈尔滨工业大学 | Pin tool suitable for local dry-type friction stir welding in water environment |
| JP2013049060A (en) * | 2011-08-30 | 2013-03-14 | Mitsubishi Heavy Ind Ltd | Friction stir welding execution method |
| CN102950377A (en) * | 2012-11-23 | 2013-03-06 | 北京石油化工学院 | Local dry-type underwater friction stitch welding device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104985318A (en) * | 2015-06-30 | 2015-10-21 | 苏州华日金菱机械有限公司 | Cold welding method |
| CN106624258A (en) * | 2017-01-20 | 2017-05-10 | 华南理工大学 | Miniature drainage cover for local dry welding underwater robot of double-airflow structure |
| CN108406087A (en) * | 2018-05-21 | 2018-08-17 | 广东省焊接技术研究所（广东省中乌研究院） | A kind of agitating friction welder and welding method |
| CN108406087B (en) * | 2018-05-21 | 2024-02-09 | 广东省科学院中乌焊接研究所 | Friction stir welding device and welding method |
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| CN103212782B (en) | 2014-12-10 |
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