CN2677719Y - Inserted copper alumium pipe welding joint - Google Patents
Inserted copper alumium pipe welding joint Download PDFInfo
- Publication number
- CN2677719Y CN2677719Y CN 200420038141 CN200420038141U CN2677719Y CN 2677719 Y CN2677719 Y CN 2677719Y CN 200420038141 CN200420038141 CN 200420038141 CN 200420038141 U CN200420038141 U CN 200420038141U CN 2677719 Y CN2677719 Y CN 2677719Y
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- CN
- China
- Prior art keywords
- pipe
- copper
- aluminum pipe
- joint
- welding
- 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.)
- Expired - Fee Related
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The utility model relates to an inserted copper aluminium pipe welding joint, which is characterized in that the outer diameter of a copper pipe is the same as the outer diameter of an aluminium pipe. The welded joint of the copper pipe is designed to a guiding part of which the front end is in the shape of a straight pipe and the back part is a cone-shaped welding face, the outer diameter of the part is less than the inner diameter of the aluminium pipe, and the cone-shaped welding face and the inner wall of the aluminium pipe are combined to form a welding and connecting zone. Thus, the utility model is formed, the welded quality is good, and the welded surface is wide. The aluminium pipe does not need extra processing requirement or processing, and the radial apparent size of the joint is coincident.
Description
Technical field
The utility model relates to a kind of plug-in type copper aluminum pipe welded joint.
Background technique
Copper pipe and aluminum pipe fusing point differ about 400 ℃, because the aluminum pipe internal surface is furnished with oxide layer, two kinds of materials are difficult to realize two kinds of connections between metallic atom again, and common energy storage welding and friction welding also are difficult to guarantee welding quality.
Goal of the invention
The objective of the invention is to overcome the shortcoming of prior art, provide a kind of tubing that utilizes two kinds of hardness unlike materials when copper pipe inserts aluminum pipe, to switch on heat fusion and the big plug-in type copper aluminum pipe welded joint structure of fusion area that brings up.
Copper pipe external diameter of the present utility model is identical with aluminum pipe, and the guide portion of straight tube-like and taper face of weld are thereafter arranged at the welded joint position of copper pipe design front end, and the external diameter of this guide portion is slightly smaller than the aluminum pipe internal diameter, be that guide portion and aluminum pipe inwall have a micro-gap, not only be convenient to peg graft, also can guarantee to store the splash that generates in the welding process technically and block pipeline to prevent it.To insert cover fashionable when two pipes, and the taper face of weld of the copper pipe of hard is with oxide layer grinding on the soft aluminum pipe wall, gives suitable current flow heats when friction generates heat and fuse and form the welding area pegging graft.
Description of drawings
Fig. 1 is the configuration state schematic representation before two kinds of tubing of the present utility model engage.
Fig. 2 joint structure schematic representation of the present utility model.
Wherein 1, copper pipe 2, face of weld 3, guide portion 4, aluminum pipe 5, welding area.
Embodiment
As Fig. 1, Fig. 2,1 external diameter of copper pipe of the present utility model is identical with aluminum pipe 4, and the guide portion 3 of straight tube-like and taper face of weld 2 are thereafter arranged at the welded joint position of copper pipe 1 design front end, the external diameter of this guide portion 3 is slightly smaller than aluminum pipe 4 internal diameters, the welding area 5 that above-mentioned taper face of weld 2 and aluminum pipe 4 inwalls are combined to.
The utility model of constructing thus, its welding quality is good, the fusion face width, not needing has extra processing request or processing to aluminum pipe, and its joint outward appearance radial dimension unanimity.
Claims (1)
1, a kind of plug-in type copper aluminum pipe welded joint, (1) external diameter that it is characterized in that copper pipe is identical with aluminum pipe (4), and the guide portion (3) of straight tube-like and taper face of weld (2) are thereafter arranged at the welded joint position of copper pipe (1) design front end, the external diameter of this guide portion (3) is slightly smaller than aluminum pipe (4) internal diameter, and above-mentioned taper face of weld (2) is combined to welding area (5) with aluminum pipe (4) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420038141 CN2677719Y (en) | 2004-01-15 | 2004-01-15 | Inserted copper alumium pipe welding joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420038141 CN2677719Y (en) | 2004-01-15 | 2004-01-15 | Inserted copper alumium pipe welding joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2677719Y true CN2677719Y (en) | 2005-02-09 |
Family
ID=34583899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420038141 Expired - Fee Related CN2677719Y (en) | 2004-01-15 | 2004-01-15 | Inserted copper alumium pipe welding joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2677719Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299038C (en) * | 2005-02-24 | 2007-02-07 | 左铁军 | Copper-aluminium combined pipeline for refrigerating system and its preparing method |
| WO2008034320A1 (en) * | 2006-09-20 | 2008-03-27 | Tiejun Zuo | A non-eutectic structure weld joint of copper-aluminum thin wall pipe and its manufacturing method |
| CN100420892C (en) * | 2006-09-20 | 2008-09-24 | 左铁军 | Inner diameter of copper aluminum joint, copper aluminum joint with diameter being equal to inner diameter of aluminum pipe, and preparation 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 |
| CN108194719A (en) * | 2018-01-08 | 2018-06-22 | 扬州市勘测设计研究院有限公司 | A kind of connection structure of winding pipe and attaching method thereof |
-
2004
- 2004-01-15 CN CN 200420038141 patent/CN2677719Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299038C (en) * | 2005-02-24 | 2007-02-07 | 左铁军 | Copper-aluminium combined pipeline for refrigerating system and its preparing method |
| WO2008034320A1 (en) * | 2006-09-20 | 2008-03-27 | Tiejun Zuo | A non-eutectic structure weld joint of copper-aluminum thin wall pipe and its manufacturing method |
| CN100420892C (en) * | 2006-09-20 | 2008-09-24 | 左铁军 | Inner diameter of copper aluminum joint, copper aluminum joint with diameter being equal to inner diameter of aluminum pipe, and preparation method |
| CN100445625C (en) * | 2006-09-20 | 2008-12-24 | 左铁军 | Welded joint of thin wall copper aluminum pipe with no eutectic structure, and preparation 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 |
| CN108194719A (en) * | 2018-01-08 | 2018-06-22 | 扬州市勘测设计研究院有限公司 | A kind of connection structure of winding pipe and attaching method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050209 |