CN1032129A - Fast cold welding for joint of aluminium and copper - Google Patents
Fast cold welding for joint of aluminium and copper Download PDFInfo
- Publication number
- CN1032129A CN1032129A CN 87101106 CN87101106A CN1032129A CN 1032129 A CN1032129 A CN 1032129A CN 87101106 CN87101106 CN 87101106 CN 87101106 A CN87101106 A CN 87101106A CN 1032129 A CN1032129 A CN 1032129A
- Authority
- CN
- China
- Prior art keywords
- copper
- aluminium
- welding
- conduits
- plug
- 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
- Ceramic Products (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention provides a kind of special method for welding aluminium and copper conduits.As shown in the figure a copper pipe of receiving mouth is inserted an aluminum pipe of enlarging, use the interface of ceramic clamp clamps aluminium and copper conduits then, and with one at a high speed the plug of rotation act on the seam crossing of aluminium and copper conduits inwall with certain pressure, after regular hour, produce the needed steady temperature of molecular diffusion field on the contact-making surface of aluminium and copper conduits interface, realize the rapid welding of aluminium and copper conduits.
Description
The present invention is a kind of special welding method of dissimilar metal conduit.
Existing aluminium and copper conduits welding is general adopts flash of light to weld, and promptly on welding machine aluminum pipe is heated to approximate molten molten state, and copper pipe is heated to soft state, and aluminium-copper tube is finished welding under certain pressure.This welding method needs the equipment of more complicated, and to the selection of the joint form of conduit, the welding temperature area requirement is comparatively strict, otherwise will cause joint fragility or sealing-off, when especially the butt joint of light-wall pipe being welded, because joint face is narrow, the reliability decrease of weld seam.
The purpose of this invention is to provide a kind of simple equipment that utilizes, reliable process easily makes on the contact-making surface of aluminium and copper conduits interface and produces the needed steady temperature of molecular diffusion field, and aluminium and copper conduits is reliablely and stablely linked together.
The present invention finishes like this: with the horizontal tool that closes up copper conductor tube is closed up earlier, make the copper conductor tube external diameter of the end that closes up be slightly less than the aluminum pipe endoporus aperture that will connect.Again the Al pipe butt welding end is carried out enlarging, expand the groove that becomes to have certain number of degrees, the end that copper pipe is closed up inserts an end of aluminum pipe enlarging then, make tight-lipped closely connected the closing of aluminium and copper conduits, and use ceramic clamp clamps, rotate friction at a high speed with plug weld in conduit again and produce enough heats and certain pressure, on the face that the aluminum bronze interface is in contact with one another, produce molecular diffusion, make and form reliable weld seam between the aluminium and copper conduits interface.The equipment that this invention is used is few, and process is simple, and is easy to operate, has improved the quality of aluminium and copper conduits welding.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Fig. 1 is the profile of fast cold welding for joint of aluminium and copper device of the present invention.
Fig. 2 is the die profile of copper pipe closing in usefulness.
Fig. 3 is the profile of the copper conductor tube after closing up.
Fig. 4 is the profile of the aluminum tubular conductor after the enlarging.
Fig. 5 is the profile of plug.
Fig. 6 is ceramic anchor clamps profile.
With reference to Fig. 2, Fig. 3, copper conductor tube 1 is clipped in aims at closing-in mould 3 with 6000 rev/mins rotating speed on the drill chuck of drilling machine and be pressed into, just can close up copper pipe for 2 seconds.With reference to Fig. 4, the welding ends of aluminum pipe mouth is accomplished the groove of certain angle with drill bit.With reference to Fig. 1, during welding copper pipe 1 is inserted aluminum pipe 2, clamp with ceramic anchor clamps 5, be fixed on the turntable of drilling machine.Pottery anchor clamps 5 can adopt Al
2O
3Silicon nitride material or machinable ceramic.On the commentaries on classics chuck of drilling machine, load onto plug then, plug is pressed into from the end that copper pipe is provided with closing in rotating speed W=7000～12000 rev/min and pressure F=80 kilogram, (3～5 seconds weld intervals under the temperature action of pressure and rotation generation at a high speed, transient temperature 970 ℃/1.2 seconds～2 seconds), contacted of aluminum bronze interface is gone up and is produced molecular diffusion, finishes welding job.Plug high-speed steel manufacturing, tungsten carbide or pure tungsten that the surface spraying is 0.1 millimeter.
When adopting D
3Be 8 millimeters, wall thickness is 1 millimeter T
2The M(pure copper tube), D
4Be 8 millimeters, wall thickness is 1 millimeter L
3The M(pure aluminum tube) time.φ
1, φ
2, φ
3Angle get 8 °, φ
4Angle get 3 °.
L
1Get 6 millimeters, L
2Get 40 millimeters, L
3Get 8～12 millimeters, L
4Get 6 millimeters.D
1, D
2Desirable 5-7 millimeter, D
5Get 4 millimeters, D
6Get 4.7 millimeters.
Main result:
A, the test of hydraulic pressure breakdown strength: 240～260 kilograms per centimeter
2, go bad at aluminum pipe vertically away from the commissure;
Can bend to arbitrarily angled weld seam when b, bending is not damaged;
C, tension test can reach 200 kilograms～220 kilograms; Bad on aluminum pipe;
D, nitrogen mass-spectrometer leak test test can reach 10
-9
Claims (6)
1, a kind of process of aluminium and copper conduits welding, it is characterized in that the copper pipe after the closing in 1 is inserted an aluminum pipe 2 that expanded mouth, clamp the interface of aluminium and copper conduits with ceramic anchor clamps 5, inserted for two inside pipe wall seam crossing effect a period of times with rotating plug 4 is provided with closing in from copper pipe a end at a high speed with pressure F again.
2, the process of aluminium and copper conduits welding as claimed in claim 1 is characterized in that the material of ceramic anchor clamps 5 adopts Al
2O
3Or silicon nitride.
3, the process of aluminium and copper conduits welding as claimed in claim 1 is characterized in that plug 4 surfaces scribble 0.1 millimeter tungsten carbide or pure tungsten.
4, the process of aluminium and copper conduits welding as claimed in claim 1, the rotating speed of plug 4 is 7000～12000 rev/mins when it is characterized in that inserting copper pipe, pressure F is 80 kilograms.
5, the process of aluminium and copper conduits as claimed in claim 1 welding is characterized in that the time that plug 4 acts on two inside pipe wall seam crossings is 3～5 seconds.
6, the process of aluminium and copper conduits as claimed in claim 1 welding is characterized in that the end that plug 4 acts on two inside pipe wall seam crossings has φ
4It is 3 ° tapering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87101106 CN1032129A (en) | 1987-09-22 | 1987-09-22 | Fast cold welding for joint of aluminium and copper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87101106 CN1032129A (en) | 1987-09-22 | 1987-09-22 | Fast cold welding for joint of aluminium and copper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1032129A true CN1032129A (en) | 1989-04-05 |
Family
ID=4813188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87101106 Pending CN1032129A (en) | 1987-09-22 | 1987-09-22 | Fast cold welding for joint of aluminium and copper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1032129A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101274389B (en) * | 2008-05-14 | 2010-06-09 | 佛山市顺德区三胜家电制造有限公司 | Copper-aluminum joint pressure welding technique |
| CN101319741B (en) * | 2007-06-04 | 2011-05-04 | 左铁军 | Plug-in type copper aluminum pipe welded joint and method of producing the same |
| CN101319742B (en) * | 2007-06-04 | 2012-04-18 | 青岛津海制冷管业有限公司 | Pipe connection used for indoor and outdoor units of air conditioner and its method for making production method |
| CN102489866A (en) * | 2011-12-09 | 2012-06-13 | 山东中大电力设备有限公司 | Cold pressure welding process for copper and aluminum |
| CN105397280A (en) * | 2015-12-30 | 2016-03-16 | 哈尔滨工业大学 | Synchronous expanded-connection friction brazing method of tube plate structure |
| CN107096991A (en) * | 2017-03-23 | 2017-08-29 | 西北工业大学 | A kind of preparation method of aluminum bronze multiple tube |
| CN109822252A (en) * | 2019-03-29 | 2019-05-31 | 厦门市齐合汽车零部件有限公司 | A kind of pipeline is to spelling welding method |
-
1987
- 1987-09-22 CN CN 87101106 patent/CN1032129A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101319741B (en) * | 2007-06-04 | 2011-05-04 | 左铁军 | Plug-in type copper aluminum pipe welded joint and method of producing the same |
| CN101319742B (en) * | 2007-06-04 | 2012-04-18 | 青岛津海制冷管业有限公司 | Pipe connection used for indoor and outdoor units of air conditioner and its method for making production method |
| CN101274389B (en) * | 2008-05-14 | 2010-06-09 | 佛山市顺德区三胜家电制造有限公司 | Copper-aluminum joint pressure welding technique |
| CN102489866A (en) * | 2011-12-09 | 2012-06-13 | 山东中大电力设备有限公司 | Cold pressure welding process for copper and aluminum |
| CN102489866B (en) * | 2011-12-09 | 2015-04-15 | 山东中大电力设备有限公司 | Cold pressure welding process for copper and aluminum |
| CN105397280A (en) * | 2015-12-30 | 2016-03-16 | 哈尔滨工业大学 | Synchronous expanded-connection friction brazing method of tube plate structure |
| CN107096991A (en) * | 2017-03-23 | 2017-08-29 | 西北工业大学 | A kind of preparation method of aluminum bronze multiple tube |
| CN109822252A (en) * | 2019-03-29 | 2019-05-31 | 厦门市齐合汽车零部件有限公司 | A kind of pipeline is to spelling welding method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1032129A (en) | Fast cold welding for joint of aluminium and copper | |
| CA2403932C (en) | Method of joining metal oilfield tubulars and well provided therewith | |
| US2387154A (en) | Method of joining bus bars | |
| US3325885A (en) | Tool for applying connection means to coaxial cable means | |
| US3863328A (en) | Method of making a Composite steel tubing | |
| US20080302539A1 (en) | Method and apparatus for lengthening a pipe string and installing a pipe string in a borehole | |
| CN110280954B (en) | Frock clamp is used in metal pipe fitting welding | |
| US6184493B1 (en) | Vertical diffusion bonding apparatus | |
| CN1041900A (en) | Special metal pipe impact extrusion thermal diffusion welding technology | |
| EP1534466A1 (en) | Forge welding method | |
| JP2557017B2 (en) | Friction welding machine for long pipes | |
| CN215509858U (en) | Clamping type connecting device for manufacturing petroleum drilling tool | |
| US3461538A (en) | Process for manufacturing welding devices for semi-conductors | |
| GB2394491A (en) | Joining of tubulars through the use of explosives | |
| US1978235A (en) | Method of making butt-welded tubes | |
| CN213945506U (en) | Fixing device for welding | |
| CN102528255A (en) | V-shaped face copper and aluminium welding processing technique and welding connector used for power cables | |
| CN107497951A (en) | A kind of lined composite steel tube socket joint welding system and hold insertion method | |
| CN221119874U (en) | Radial well drilling sleeve pipe convenient to installation | |
| JPH09290324A (en) | Centering device of steel pipe in screw cutting device and screw cutting device of steel pipe | |
| CN218586777U (en) | Portable welding device for power cable intermediate welding joint | |
| CN213224865U (en) | High tension transmission line steel pipe pole welding set | |
| JPH06658A (en) | Formation of joint for stainless steel products and different metallic material | |
| FR2534159A1 (en) | METHOD FOR MANUFACTURING CYLINDRICAL PARTS, ESPECIALLY HOLLOW PIECES, AND MACHINE FOR CARRYING OUT SAID METHOD | |
| CN1246084A (en) | Method and device for joining oilfield tubulars |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |