CN102284788A - Pressure deposition welding method for aluminum and copper dissimilar metals - Google Patents
Pressure deposition welding method for aluminum and copper dissimilar metals Download PDFInfo
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- CN102284788A CN102284788A CN2011101966487A CN201110196648A CN102284788A CN 102284788 A CN102284788 A CN 102284788A CN 2011101966487 A CN2011101966487 A CN 2011101966487A CN 201110196648 A CN201110196648 A CN 201110196648A CN 102284788 A CN102284788 A CN 102284788A
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- aluminum alloy
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Abstract
The invention relates to a pressure deposition welding method for aluminum and copper dissimilar metals, and belongs to the technical field of dissimilar metal welding. A protective agent layer is used for preventing the surfaces of the two metals from being oxidized again in the heating process, is heated and melted to remove an oxide film on a joint interface of the two metals and emerges from the periphery of an aluminum alloy material, so that the interface is prevented from being oxidized again in the welding process, and the spreadability and wetting property of the aluminum alloy material on the surface of a copper alloy material are improved simultaneously. The method is easy and convenient to operate, the interface can be prevented from being oxidized, and the high-quality and high-efficiency connection of the dissimilar metals is realized.
Description
Technical field
The invention belongs to dissimilar metal solder technology field.
Background technology
The dissimilar metal syndeton has two kinds of premium properties that material is comprehensive, obtained using widely in national defence and national product field, and application prospect constantly enlarges.
As, copper has fabulous electric conductivity, thermal conductivity, but because the price comparison costliness of copper brings huge cost pressure for the relevant enterprise in electrical engineering field.Aluminium and aluminium alloy have excellent physical characteristics and mechanical property equally.In order to save production cost, part electric product or parts become a trend of current electrical equipment, electric power industry development with aluminium or copper and aluminium welding fitting Alloy instead of Copper.
But because the fusing point of two kinds of materials differs nearly 400 ℃, intersolubility is very limited, and in the conventional fusion process, the mass fraction of Cu generally all about 30%, produces compound between the aluminum bronze brittle metal inevitably in the joint, has a strong impact on strength of joint.Therefore be difficult for adopting traditional fusion welding method to weld.
Summary of the invention
The purpose of this invention is to provide a kind of deposited soldering method of pressure of realizing the high-quality and efficient connection of aluminum bronze dissimilar metal, be beneficial to the production of electric product.
Technical solution of the present invention is:
1) removes the greasy dirt and the oxide-film of Cu alloy material and aluminum alloy material surface respectively;
2) fusing point is high Cu alloy material Cu alloy material places in the die cavity that is provided with seaming chuck, at the upper surface uniform spreading protective agent layer of Cu alloy material, aluminum alloy materials is kept flat on the protective agent layer more subsequently;
3) heating makes Cu alloy material in the die cavity and aluminum alloy materials be warming up to the protective agent layer and melts fully, and during the aluminum alloy materials fusing, stops heating immediately, and simultaneously, seaming chuck is exerted pressure downwards, makes the welding of Cu alloy material and aluminum alloy materials, realizes that atom connects.
It is to prevent that oxidation takes place once more in two metal surfaces in heating process that the present invention adopts the protective agent layer; When protective agent layer melted by heat removed two kinds of metal joints oxide-film at the interface; emersion around the aluminum alloy materials; prevent that the interface again be oxidized in welding process, improve spreadability and the wellability of aluminum alloy materials simultaneously on the Cu alloy material surface.The present invention is simple to operation, not only can prevent interface oxidation, finally realizes the high-quality and efficient connection of different metal.The present invention compares with art methods, has following remarkable advantage to be:
1, welding procedure is simple, and is applied widely, is applicable to the welding of multiple aluminium alloy and copper alloy;
2, can realize the protection of joint in whole welding process, avoid its oxidation in welding process;
3, strength of welded joint height, good airproof performance, electric conductivity are better than aluminium.
Make things convenient for emersion and extrude after making protective agent layer melted by heat, described Cu alloy material and aluminum alloy materials clearance-type respectively are placed in the die cavity.
The less Cu alloy material diameter of described aluminum alloy materials diameter.
Description of drawings
The joint of aluminium and copper interface microphoto of Fig. 1 for adopting the inventive method to form.
The specific embodiment
Step:
One, prepares
1, material to be welded: the T2 copper billet of two rectangles and 2A50 Al alloy block, respectively the face to be welded of two materials is made the plane, and to be welded external diameter of T2 copper billet is greater than to be welded external diameter of 2A50 Al alloy block.
2, prepare CsF-AIF
3The type protective agent.
Three, production process
1, removes the greasy dirt and the oxide-film of T2 copper billet and 2A50 Al alloy block outer surface respectively;
2, with T2 copper billet clearance-type place in the die cavity that is provided with seaming chuck, its to be welded facing up is subsequently at the upper surface uniform spreading CsF-AIF of T2 copper
3Type protective agent layer is put into CsF-AIF with the 2A50 Al alloy block Horizon that faces down to be welded again
3On the type protective agent layer;
3,, die cavity is heated up, and T2 copper billet and 2A50 Al alloy block in the die cavity are heated up until CsF-AIF by heating control system
3The fusing of type protective agent layer when the 2A50 Al alloy block begins to melt, stops heating immediately, and simultaneously, seaming chuck is exerted pressure downwards, makes the welding of T2 copper billet and 2A50 Al alloy block, realizes that atom connects.
4, sample is taken out in the cooling back, and the residual protective agent of joint is cleaned out, and finishes the preparation process of sample.
5, welding point interface microstructure is seen accompanying drawing 1, and the interface is in conjunction with good, and the weld seam faying face is straight, do not have be mingled with, pore and defective such as seam not.
The present invention is through validation trial; welding process is simple to operate; protective agent can effectively prevent the oxidation in the welding process, and the generation of compound has obtained effective control between the welding point interface metal simultaneously, can realize high-quality and efficient aluminum bronze dissimilar metal welding.
Claims (3)
1. the deposited soldering method of aluminum bronze dissimilar metal pressure may further comprise the steps:
1) removes the greasy dirt and the oxide-film of Cu alloy material and aluminum alloy material surface respectively;
2) Cu alloy material is placed in the die cavity that is provided with seaming chuck, at the upper surface uniform spreading protective agent layer of Cu alloy material, aluminum alloy materials is kept flat on the protective agent layer more subsequently;
3) heating makes Cu alloy material in the die cavity and aluminum alloy materials be warming up to the protective agent layer and melts fully, and during the aluminum alloy materials fusing, stops heating immediately, and simultaneously, seaming chuck is exerted pressure downwards, makes the welding of Cu alloy material and aluminum alloy materials.
2. according to the deposited soldering method of the described aluminum bronze dissimilar metal of claim 1 pressure, it is characterized in that described Cu alloy material and aluminum alloy materials respectively clearance-type be placed in the die cavity.
3. according to claim 1 or the deposited soldering method of 2 described aluminum bronze dissimilar metal pressure, it is characterized in that described aluminum alloy materials diameter is less than the Cu alloy material diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101966487A CN102284788A (en) | 2011-07-14 | 2011-07-14 | Pressure deposition welding method for aluminum and copper dissimilar metals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101966487A CN102284788A (en) | 2011-07-14 | 2011-07-14 | Pressure deposition welding method for aluminum and copper dissimilar metals |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102284788A true CN102284788A (en) | 2011-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101966487A Pending CN102284788A (en) | 2011-07-14 | 2011-07-14 | Pressure deposition welding method for aluminum and copper dissimilar metals |
Country Status (1)
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| CN (1) | CN102284788A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103567619A (en) * | 2013-10-09 | 2014-02-12 | 天津大学 | Copper-aluminum dissimilar metal rapid connection method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1234309A (en) * | 1999-03-29 | 1999-11-10 | 汪文彬 | End-face butt junction technology for friction welding copper-aluminium thin-wall tube |
| JP2001334371A (en) * | 2000-05-25 | 2001-12-04 | Showa Denko Kk | Eutectic bonding for copper-aluminum pipe |
| JP3311649B2 (en) * | 1997-07-15 | 2002-08-05 | 森 繁夫 | Joint and joining method of copper tube and aluminum tube |
| CN1369352A (en) * | 2001-11-23 | 2002-09-18 | 深圳市宝安联华实业有限公司 | Soldering method and its used active coupling agent |
| CN101274389A (en) * | 2008-05-14 | 2008-10-01 | 佛山市顺德区三胜家电制造有限公司 | Copper-aluminum joint pressure welding technique |
| CN101323065A (en) * | 2008-07-08 | 2008-12-17 | 郑州机械研究所 | Self-fluxing aluminum solder and method for preparing the same |
| CN101947689A (en) * | 2010-09-21 | 2011-01-19 | 河南科技大学 | Continuous compound molding method of copper-aluminum composite board and compound molding device thereof |
-
2011
- 2011-07-14 CN CN2011101966487A patent/CN102284788A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3311649B2 (en) * | 1997-07-15 | 2002-08-05 | 森 繁夫 | Joint and joining method of copper tube and aluminum tube |
| CN1234309A (en) * | 1999-03-29 | 1999-11-10 | 汪文彬 | End-face butt junction technology for friction welding copper-aluminium thin-wall tube |
| JP2001334371A (en) * | 2000-05-25 | 2001-12-04 | Showa Denko Kk | Eutectic bonding for copper-aluminum pipe |
| CN1369352A (en) * | 2001-11-23 | 2002-09-18 | 深圳市宝安联华实业有限公司 | Soldering method and its used active coupling agent |
| CN101274389A (en) * | 2008-05-14 | 2008-10-01 | 佛山市顺德区三胜家电制造有限公司 | Copper-aluminum joint pressure welding technique |
| CN101323065A (en) * | 2008-07-08 | 2008-12-17 | 郑州机械研究所 | Self-fluxing aluminum solder and method for preparing the same |
| CN101947689A (en) * | 2010-09-21 | 2011-01-19 | 河南科技大学 | Continuous compound molding method of copper-aluminum composite board and compound molding device thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103567619A (en) * | 2013-10-09 | 2014-02-12 | 天津大学 | Copper-aluminum dissimilar metal rapid connection method |
| CN103567619B (en) * | 2013-10-09 | 2016-10-05 | 天津大学 | Copper-aluminum dissimilar metal rapid connection method |
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Application publication date: 20111221 |