CN103100772A - Method of brazing with magnalium alloy - Google Patents
Method of brazing with magnalium alloy Download PDFInfo
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- CN103100772A CN103100772A CN2012104474224A CN201210447422A CN103100772A CN 103100772 A CN103100772 A CN 103100772A CN 2012104474224 A CN2012104474224 A CN 2012104474224A CN 201210447422 A CN201210447422 A CN 201210447422A CN 103100772 A CN103100772 A CN 103100772A
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Abstract
The invention relates to a method of brazing with magnalium alloy. The method of brazing comprises the following steps: the flowing temperature of brazing filler metal and the flowing temperature of soldering flux are set as the same or with a temperature difference no more than 5C DEG, in the environment of inactive gases, the brazing filler metal begins to flow when the soldering flux reaches the set flow temperature, and error time is no more than five seconds.
Description
Technical field
The invention belongs to the metal solder field, refer to especially the method for welding to the aluminium alloy containing magnesium material.
Background technology
The strict occasion that is bonded on of aluminum products is to use the method for welding of fluorides solder flux to carry out under inert gas, and adopting the solution quality percentage concentration is the fluoride flux of 5% left and right.Under normal conditions, fluorine and the magnesium in aluminium alloy in solder flux can react, and form the high-melting-point compounds such as magnesium fluoride in aluminum alloy surface, and this compound can hinder the expansion of soaking of solder, thereby reduce brazing property.In order to prevent the generation of this phenomenon, the general practice is at the solder of soldering lug and the aluminium alloy interface that contains magnesium, the reaction that the barrier layer that prevents the magnesium diffusion suppresses solder flux and magnesium to be set, and this technical scheme can be used the higher solder flux of price, the increase production cost.
A kind of welding method of aluminum alloy materials is provided in the patent of Chinese patent application number for CN2005800319228, the method is mainly by the beginning flowing temperature of controlling solder and the temperature that solder flux begins to flow, and control the flowing time of solder and the solidus temperature of condition and solder and the difference of liquidus temperature and be not more than in 30 ℃, reach the solidus temperature of solder flux and the difference of liquidus temperature and realize with interior at 30 ℃.
This technical scheme can be good at solving aluminium alloy containing magnesium material high-melting-point compound such as magnesium fluoride in welding and goes wrong, and cost is lower.But this technical scheme also has the following disadvantages, and finds by analysis, and by technique scheme, solder just solder flux has occured within 60 seconds intracardiac times that begin to flow that solder flux begins to flow and magnesium is combined to the compounds such as magnesium fluoride.And the difference of controlling the solidus temperature of solder and solder flux and liquidus temperature be difficult to realize in actual production, and the conditional request that realizes is also wayward in 30 ℃, realizes even also be difficult on the very high production line of automaticity.
Summary of the invention
The objective of the invention is the improvement technology that proposes for the technical scheme that application number is the patent of CN2005800319228, can better adapt to demand of industrial production by improving technical scheme.
The present invention is achieved by the following technical solutions: the method for welding of aluminium alloy containing magnesium comprises the following steps:
The flowing temperature of solder is set to identical or is not more than 5 ℃ of temperature difference with the flowing temperature of solder flux;
In atmosphere of inert gases, solder solder flux reach setting flowing temperature in begin to flow, error time is no more than 5 seconds.
As further improvement, the solidus temperature of described solder flux and the difference of liquidus temperature are in 30 ℃.
As further improvement, the solidus temperature of described solder and the difference of liquidus temperature are in 20 ℃.
The present invention with the beneficial effect of prior art is:
Because the flowing temperature of setting solder and solder flux is identical, and be limited to and both begun to flow after welding reaches flowing temperature, when the fluorine in solder flux also complete reaction did not occur, welding has completed and temperature drops to solid state shape, has prevented that effectively the fluorine in magnesium and solder flux from reacting.
The specific embodiment
Below by specific embodiment, technical scheme of the present invention is described, following examples are just in order to illustrate the present invention rather than to limit scope of the present invention.
The method for welding of aluminium alloy containing magnesium comprises the following steps:
The flowing temperature of solder is set to identical or is not more than 5 ℃ of temperature difference with the flowing temperature of solder flux; Best selection is that the flowing temperature of solder is set to identical with the flowing temperature of solder flux.
In atmosphere of inert gases, solder solder flux reach setting flowing temperature in begin to flow, error time is no more than 5 seconds.Inert gas belongs to prior art in this application, in the art, and the inert gas such as nitrogen, the argon gas etc. that often use.
As further improvement, the solidus temperature of described solder flux and the difference of liquidus temperature are in 30 ℃.
As further improvement, the solidus temperature of described solder and the difference of liquidus temperature are in 20 ℃.
For the difference of the solidus temperature that realizes above-mentioned solder flux and liquidus temperature at 30 ℃ the difference with the solidus temperature of interior and solder and liquidus temperature at 20 ℃ with interior requirement, the general method that reduces the inert gas temperature that adopts realizes.
Above embodiment has illustrated technical scheme of the present invention, it will be appreciated by those skilled in the art that and can is out of shape or is equal to replacement by above-mentioned technical scheme, all can access other embodiments of the invention.
Claims (3)
1. the method for welding of aluminium alloy containing magnesium, is characterized in that, comprises the following steps:
The flowing temperature of solder is set to identical or is not more than 5 ℃ of temperature difference with the flowing temperature of solder flux;
In atmosphere of inert gases, solder solder flux reach setting flowing temperature in begin to flow, error time is no more than 5 seconds.
2. the method for welding of aluminium alloy containing magnesium according to claim 1, it is characterized in that: the solidus temperature of described solder flux and the difference of liquidus temperature are in 30 ℃.
3. the method for welding of aluminium alloy containing magnesium according to claim 1, it is characterized in that: the solidus temperature of described solder and the difference of liquidus temperature are in 20 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104474224A CN103100772A (en) | 2012-11-05 | 2012-11-05 | Method of brazing with magnalium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104474224A CN103100772A (en) | 2012-11-05 | 2012-11-05 | Method of brazing with magnalium alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103100772A true CN103100772A (en) | 2013-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104474224A Pending CN103100772A (en) | 2012-11-05 | 2012-11-05 | Method of brazing with magnalium alloy |
Country Status (1)
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| CN (1) | CN103100772A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103567656A (en) * | 2013-10-28 | 2014-02-12 | 顾建 | Brazing material for aluminum alloy |
| CN106735673A (en) * | 2016-11-23 | 2017-05-31 | 虞海盈 | The method for welding of aluminium alloy containing magnesium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5697045A (en) * | 1994-07-22 | 1997-12-09 | Showa Aluminum Corporation | Method of making an aluminum alloy brazing agent containing a flux |
| CN1176862A (en) * | 1996-06-24 | 1998-03-25 | 关东冶金工业株式会社 | Brazing method with flux of alminium and furnace therefor |
| US20070215674A1 (en) * | 2004-09-22 | 2007-09-20 | Furukawa-Sky Aluminum Corp. | Method of brazing an aluminum alloy material and method of producing an aluminum alloy heat exchanger |
| JP2011148004A (en) * | 2011-02-25 | 2011-08-04 | Furukawa-Sky Aluminum Corp | Low-temperature brazing filler metal for joining aluminum alloy |
-
2012
- 2012-11-05 CN CN2012104474224A patent/CN103100772A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5697045A (en) * | 1994-07-22 | 1997-12-09 | Showa Aluminum Corporation | Method of making an aluminum alloy brazing agent containing a flux |
| CN1176862A (en) * | 1996-06-24 | 1998-03-25 | 关东冶金工业株式会社 | Brazing method with flux of alminium and furnace therefor |
| US20070215674A1 (en) * | 2004-09-22 | 2007-09-20 | Furukawa-Sky Aluminum Corp. | Method of brazing an aluminum alloy material and method of producing an aluminum alloy heat exchanger |
| JP2011148004A (en) * | 2011-02-25 | 2011-08-04 | Furukawa-Sky Aluminum Corp | Low-temperature brazing filler metal for joining aluminum alloy |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103567656A (en) * | 2013-10-28 | 2014-02-12 | 顾建 | Brazing material for aluminum alloy |
| CN106735673A (en) * | 2016-11-23 | 2017-05-31 | 虞海盈 | The method for welding of aluminium alloy containing magnesium |
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Application publication date: 20130515 |