CN103624400A - Friction stir welding gas protection device - Google Patents
Friction stir welding gas protection device Download PDFInfo
- Publication number
- CN103624400A CN103624400A CN201210299484.5A CN201210299484A CN103624400A CN 103624400 A CN103624400 A CN 103624400A CN 201210299484 A CN201210299484 A CN 201210299484A CN 103624400 A CN103624400 A CN 103624400A
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- CN
- China
- Prior art keywords
- friction stir
- stir welding
- cover body
- protection cover
- welding gas
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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
- B23K20/14—Preventing or minimising gas access, or using protective gases or vacuum during welding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
A friction stir welding gas protection device comprises a protection cover body, a fixing ring is connected with the protection cover body through a connecting rod, and an air inlet pipe is arranged on the protection cover body. The protection cover body is a revolved body cavity, the bottom face of a revolved body is an inclined plane, and a plurality of through holes are evenly distributed in the inclined plane and the cylindrical surface of the inner side of the protection cover body. The friction stir welding gas protection device is simple in structure, convenient to implement and especially suitable for cooling the surface of a friction stir welding joint of thick plate aluminum alloy and protecting gases used in the friction stir welding of high-melting metal such as copper alloy and titanium alloy, meanwhile, a stirring head can be cooled, and the service life of the stirring head is prolonged.
Description
Technical field
The present invention relates to a kind of protective device for friction stir welding gas.
Background technology
Friction stir welding is a kind of solid phase interconnection technique of green, compares with traditional melting welding, has welding deformation little, pollution-free, and weld seam there will not be the common defects of melting welding such as crackle, undercut, is widely used in the industries such as space flight, aviation, boats and ships, electronics.Yet when carrying out aluminium alloy thick plate friction stir welding, the temperature of face of weld temperature high and weld seam bottom is low, in order to obtain the welding line joint of high-quality, needs the surface of butt welded seam to carry out gas cooled, to reduce the thermograde of weld seam top layer and bottom; In addition,, when carrying out refractory metal as copper alloy, titanium alloy etc materials friction stir welding, for fear of the oxidation of weld seam, need to adopt inert gas to protect.Therefore, need to make a kind of gas shield closure assembly of applicable friction stir welding.
Summary of the invention
For the deficiencies in the prior art; object of the present invention will provide a kind of friction stir welding gas shield device exactly; while mainly solving aluminium alloy thick plate friction stir welding; the excessive problem of thermograde of weld seam top layer and bottom; in addition, the gas shield problem while also having solved refractory metal as copper alloy, titanium alloy etc materials friction stir welding, simultaneously; this device can also carry out gas cooled to stirring-head, has improved the service life of stirring-head.
The object of the present invention is achieved like this: a kind of friction stir welding gas shield device, and protective device comprises protection cover body, and retainer ring is connected with protection cover body by connecting rod, and protection cover body is provided with air inlet pipe.
Protection cover body is revolving body die cavity, and the bottom surface of revolving body is inclined-plane, on inclined-plane and upper protection cover body columnae medialis face, is evenly equipped with a plurality of through holes.
The bottom surface of revolving body is inclined-plane, and the angle of inclined-plane and horizontal plane is 25 °.
The fixed position external diameter of retainer ring internal diameter and friction stir welding machine spindle is matched in clearance.
Described matched in clearance intermediate gap size is 0.4mm～0.6mm.
Provided by the invention have a friction stir welding gas shield device; before carrying out friction stir welding; gas shield closure assembly is sleeved on to the fixed position of friction stir welding machine spindle; then adopt four screw lock to fix; again hose is connected two air inlet pipe of gas shield closure assembly with source of the gas; when carrying out friction stir welding, open source of the gas, utilize mobile gas butt welded seam surface to carry out cooling or protection, to obtain the welding line joint of high-quality.
The present invention is simple and practical, enforcement is convenient; the gas shield of the cooling and refractory metal that is specially adapted to thick aluminum alloy plate stir friction welding seam surface during as copper alloy, titanium alloy etc materials friction stir welding; simultaneously; this device also can carry out stirring-head cooling, improves its service life.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is one embodiment of the invention schematic three dimensional views.
Fig. 2 is front view of the present invention.
Fig. 3 is top view of the present invention.
Fig. 4 is assembling schematic diagram of the present invention.
The specific embodiment
Structure of the present invention is as Figure 1-4: a kind of friction stir welding gas shield device, and protective device comprises protection cover body 3, retainer ring 1 is connected with protection cover body 3 by connecting rod 2, protects cover body 3 to be provided with air inlet pipe 4.Wherein, retainer ring 1, connecting rod 2, protection cover body 3, air inlet pipe 4 all adopt stainless steel material to make; retainer ring 1 internal diameter is 300.4-300.6mm, and the fixed position external diameter of retainer ring internal diameter and friction stir welding machine spindle is matched in clearance, and gap length is 0.4mm～0.6mm.
Operation principle of the present invention is as follows: before carrying out friction stir welding, adopt hold-down screw 9 stirring-head 8 to be locked on the rotary main shaft 7 of agitating friction soldering equipment, again gas shield device is sleeved on the fixed position 6 of friction stir welding machine spindle, and adopt four screws 5 to be locked, again hose is connected two air inlet pipe 4 of gas shield closure assembly with source of the gas, when carrying out friction stir welding, open source of the gas, source of the gas can be compressed air, argon gas, nitrogen etc., utilize mobile gas butt welded seam surface to carry out cooling or protection, to obtain the welding line joint of high-quality.
Claims (5)
1. a friction stir welding gas shield device, is characterized in that: protective device comprises protection cover body (3), and retainer ring (1) is connected with protection cover body (3) by connecting rod (2), and protection cover body (3) is provided with air inlet pipe (4).
2. friction stir welding gas shield device according to claim 1, is characterized in that: protection cover body (3) revolving body die cavity, the bottom surface of revolving body is inclined-plane, on inclined-plane and upper protection cover body columnae medialis face, is evenly equipped with a plurality of through holes.
3. friction stir welding gas shield device according to claim 2, is characterized in that: the bottom surface of revolving body is inclined-plane, and the angle of inclined-plane and horizontal plane is 25 °.
4. friction stir welding gas shield device according to claim 2, is characterized in that: the fixed position external diameter of retainer ring internal diameter and friction stir welding machine spindle is matched in clearance.
5. friction stir welding gas shield device according to claim 2, is characterized in that: described matched in clearance intermediate gap size is 0.4mm～0.6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210299484.5A CN103624400A (en) | 2012-08-21 | 2012-08-21 | Friction stir welding gas protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210299484.5A CN103624400A (en) | 2012-08-21 | 2012-08-21 | Friction stir welding gas protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103624400A true CN103624400A (en) | 2014-03-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210299484.5A Pending CN103624400A (en) | 2012-08-21 | 2012-08-21 | Friction stir welding gas protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103624400A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014927A (en) * | 2014-06-10 | 2014-09-03 | 东莞台一盈拓科技股份有限公司 | Amorphous alloy and nut welding method |
| CN104384706A (en) * | 2014-11-26 | 2015-03-04 | 哈尔滨工业大学 | Three-layer gas protection cover for titanium and titanium alloy friction stir welding |
| CN107486622A (en) * | 2017-08-31 | 2017-12-19 | 山东科技大学 | A kind of cooling device applied to agitating friction weldering |
| 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 |
| WO2018176856A1 (en) * | 2017-03-29 | 2018-10-04 | 广船国际有限公司 | Gas shield device for pipeline welding |
| CN112620918A (en) * | 2020-12-30 | 2021-04-09 | 广东省科学院中乌焊接研究所 | Friction stir welding auxiliary device |
-
2012
- 2012-08-21 CN CN201210299484.5A patent/CN103624400A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014927A (en) * | 2014-06-10 | 2014-09-03 | 东莞台一盈拓科技股份有限公司 | Amorphous alloy and nut welding method |
| CN104384706A (en) * | 2014-11-26 | 2015-03-04 | 哈尔滨工业大学 | Three-layer gas protection cover for titanium and titanium alloy friction stir welding |
| WO2018176856A1 (en) * | 2017-03-29 | 2018-10-04 | 广船国际有限公司 | Gas shield device for pipeline welding |
| CN107486622A (en) * | 2017-08-31 | 2017-12-19 | 山东科技大学 | A kind of cooling device applied to agitating friction weldering |
| 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 |
| CN112620918A (en) * | 2020-12-30 | 2021-04-09 | 广东省科学院中乌焊接研究所 | Friction stir welding auxiliary device |
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Legal Events
| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140312 |