CN102423822A - High-frequency induction brazing welding process for aluminum alloy base plate and stainless steel water inlet/outlet pipe - Google Patents
High-frequency induction brazing welding process for aluminum alloy base plate and stainless steel water inlet/outlet pipe Download PDFInfo
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- CN102423822A CN102423822A CN2011102896547A CN201110289654A CN102423822A CN 102423822 A CN102423822 A CN 102423822A CN 2011102896547 A CN2011102896547 A CN 2011102896547A CN 201110289654 A CN201110289654 A CN 201110289654A CN 102423822 A CN102423822 A CN 102423822A
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- water inlet
- stainless steel
- base plate
- alloy base
- outlet pipe
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Abstract
The invention belongs to a manufacturing process of heat-exchange equipment, in particular to a high-frequency induction brazing welding process for an aluminum alloy base plate and a stainless steel water inlet/outlet pipe. A plate type heat radiator comprises two stainless steel water inlet/outlet pipes and the aluminum alloy base plate; and the stainless steel water inlet/outlet pipes are welded with the aluminum alloy base plate through utilizing high-frequency induction brazing welding. The stainless steel water inlet/outlet pipes and the aluminum alloy base plate in the plate type heat radiator are two special-shaped metals subjected to the brazing welding; two stainless steel water inlet/outlet pipe mounting holes are arranged at the end part of the aluminum alloy base plate; after the stainless steel water inlet/outlet pipes are installed, a high-frequency induction brazing process is innovatively adopted in the welding process method which adopts the high-frequency induction brazing, so that the welding process provided by the invention has the advantages of simplicity and easiness in operation, more importantly, capabilities of efficiently completing the connection of the water inlet/outlet pipes of the plate type heat radiator, and ensuring the requirements on the burst pressure resistant capability and the sealing performance.
Description
Technical field
The invention belongs to the manufacturing process of heat transmission equipment, be specifically related to the intermetallic welding procedure of aluminium alloy and stainless steel dissimilar.
Background technology
Be to adapt to the railway great-leap-forward development, the novel electric power locomotive progressively experiences digestion, absorption, Procedure of Innovation again, the traction convertor employing water-cooling pattern of electric locomotive and electric rail car group.What the present invention is directed to is exactly a kind of water-cooled panel radiator, is mainly used in high-power AC transmission power car traction convertor power model IGBT cooling.
What the present invention studied is the stainless steel water inlet pipe and water outlet pipe of water-cooled panel radiator and the manufacturing process of aluminium alloy plate welding, guarantees the corrosion resistance and the strength character requirement of weld seam.Its heat exchange structure of water-cooled panel radiator is unique; Parts are few, and appearance and size is little, practiced thrift assembling space; Non-deformability under vibration, pulse and the alternating hot and cold condition of withstanding shocks requires high; Use comparatively wide, no matter railway electric locomotive, EMUs, or city rail trolley, subway etc. are all being used panel radiator.
The present invention is mainly used in the cooling of IGBT module; This application all has than higher requirement the sealing property of the heat transfer property of water-cooled panel radiator, whole mechanical strength, shock resistance and oscillation intensity, anticracking pressure ability and substrate, is to make key so improve the technology of welding between aluminium alloy base plate and the stainless steel water inlet pipe and water outlet pipe dissimilar metal.
Summary of the invention
For solving the problem that above-mentioned prior art exists; The present invention provides the manufacturing process of a kind of stainless steel water inlet pipe and water outlet pipe and aluminium alloy plate welding, and technology is simple, easy operating; Accomplish the connection of the water inlet pipe and water outlet pipe of panel radiator, and guarantee the requirement of its anticracking pressure ability and sealing property.
For realizing this purpose; Technical scheme of the present invention is following: a kind of aluminium alloy base plate and stainless steel water inlet pipe and water outlet pipe high-frequency induction brazing welding procedure; Panel radiator comprises 2 stainless steel water inlet pipe and water outlet pipes and aluminium alloy base plate, and the high-frequency induction brazing welding is adopted in the welding of stainless steel water inlet pipe and water outlet pipe and aluminium alloy base plate.
A kind of aluminium alloy base plate and stainless steel water inlet pipe and water outlet pipe high-frequency induction brazing welding procedure; Press following processing step: first step preliminary treatment: aluminium alloy base plate and stainless steel water inlet pipe and water outlet pipe soak in alkali lye earlier removes surface film oxide; And then neutralize through acid soak, wash at least 3 times repeatedly with the normal temperature clear water at last and remove raffinate; Aluminium alloy base plate after the cleaning and stainless steel water inlet pipe and water outlet pipe are dried 30 minutes to there not being moisture in 100-120 ℃ of environment, take out subsequent use;
The second step soldering: the solder wire spool is assembled on the water inlet pipe and water outlet pipe, assembles the stainless steel water inlet pipe and water outlet pipe of aluminium alloy base plate and band solder again; Big induction coil heating around aluminium alloy base plate, insulation when Al-alloy based plate temperature reaches 450-500 ℃; Two little induction coils in stainless steel water inlet pipe and water outlet pipe bottom around heating respectively, when stainless steel water inlet pipe and water outlet pipe lower heating during to 577-595 ℃ solder melt outage this moment, welding end fully.
Said alkali lye adopts KOH or NaOH solution;
Said acid solution adopts HCl or HNO
3Solution.
Said alkali lye adopts mass concentration 10%NaOH solution.
Said acid solution adopts mass concentration 10%HNO
3Solution.
Stainless steel water inlet pipe and water outlet pipe and aluminium alloy base plate that panel radiator of the present invention is used are that the soldering of carrying out of two kinds of special-shaped metals is welded, and have two stainless steel Inlet and outlet water pores are installed in the aluminium alloy base plate end; The welding technique that high-frequency induction brazing is adopted in the back is installed; Adoption of innovation high-frequency induction brazing technology, technology is simple, easy operating; Main is to accomplish the connection of the water inlet pipe and water outlet pipe of panel radiator efficiently, and guarantees the requirement of its anticracking pressure ability and sealing property.
Description of drawings
Fig. 1 is the front view (containing cut-away section) of the embodiment of the invention.
Fig. 2 is the assembling solder and the water inlet pipe and water outlet pipe figure of the embodiment of the invention.
Fig. 3 is the high-frequency induction brazing sketch map of the embodiment of the invention.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is carried out detailed explanation.
As shown in Figure 1, panel radiator of the present invention comprises: 2 water inlet pipe and water outlet pipes 1 and aluminium alloy base plate 2.
Water inlet pipe and water outlet pipe 1 is a high-frequency induction brazing with aluminium alloy base plate 2 welding manners, and concrete processing step is following:
First step preliminary treatment: first cleaning aluminum alloy substrate and stainless steel water inlet pipe and water outlet pipe, in 10%NaOH alkali lye, soaked 5 minutes, after the taking-up again at 10%HNO
3Soaked 5 minutes in the solution, wash more than 3 times residual repeatedly with the normal temperature clear water at last to there not being soda acid; Cleaning back oven dry in 100-120 ℃ of environment took out subsequent use to there not being moisture in 30 minutes;
The second step soldering: solder is assembled on the water inlet pipe and water outlet pipe 1, as shown in Figure 2, assemble aluminium alloy base plate 2 and the stainless steel water inlet pipe and water outlet pipe 1 of being with solder again; Induction coil big below the utilization heats around aluminium alloy base plate; When Al-alloy based plate temperature reached 450-500 ℃, 2 little induction coils above utilizing are heating respectively all around in stainless steel water inlet pipe and water outlet pipe bottom, and solder melts fully when being heated to 577～595 ℃; This moment is outage at once, and welding finishes.
Claims (6)
1. aluminium alloy base plate and stainless steel water inlet pipe and water outlet pipe high-frequency induction brazing welding procedure; It is characterized in that: panel radiator comprises 2 stainless steel water inlet pipe and water outlet pipes (1) and aluminium alloy base plate (2), and the high-frequency induction brazing welding is adopted in the welding of stainless steel water inlet pipe and water outlet pipe and aluminium alloy base plate.
2. a kind of aluminium alloy base plate according to claim 1 and stainless steel water inlet pipe and water outlet pipe high-frequency induction brazing welding procedure is characterized in that: press following processing step:
First step preliminary treatment: aluminium alloy base plate and stainless steel water inlet pipe and water outlet pipe soak in alkali lye earlier removes surface film oxide, and then neutralizes through acid soak, washes at least 3 times repeatedly with the normal temperature clear water at last and removes raffinate; Aluminium alloy base plate after the cleaning and stainless steel water inlet pipe and water outlet pipe are dried 30 minutes to there not being moisture in 100-120 ℃ of environment, take out subsequent use;
The second step soldering: the solder wire spool is assembled on the water inlet pipe and water outlet pipe, assembles the stainless steel water inlet pipe and water outlet pipe of aluminium alloy base plate and band solder again; Big induction coil heating around aluminium alloy base plate, insulation when Al-alloy based plate temperature reaches 450-500 ℃; Two little induction coils in stainless steel water inlet pipe and water outlet pipe bottom around heating respectively, solder melts fully when stainless steel water inlet pipe and water outlet pipe lower heating to 577～595 ℃, outage this moment, welding finishes.
3. a kind of aluminium alloy base plate according to claim 2 and stainless steel water inlet pipe and water outlet pipe high-frequency induction brazing welding procedure is characterized in that: said alkali lye adopts KOH or NaOH solution.
4. a kind of aluminium alloy base plate according to claim 2 and stainless steel water inlet pipe and water outlet pipe high-frequency induction brazing welding procedure is characterized in that: said acid solution adopts HCl or HNO
3Solution.
5. a kind of aluminium alloy base plate according to claim 2 and stainless steel water inlet pipe and water outlet pipe high-frequency induction brazing welding procedure is characterized in that: said alkali lye adopts mass concentration 10%NaOH solution.
6. a kind of aluminium alloy base plate according to claim 2 and stainless steel water inlet pipe and water outlet pipe high-frequency induction brazing welding procedure is characterized in that: said acid solution adopts mass concentration 10%HNO
3Solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102896547A CN102423822A (en) | 2011-09-27 | 2011-09-27 | High-frequency induction brazing welding process for aluminum alloy base plate and stainless steel water inlet/outlet pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102896547A CN102423822A (en) | 2011-09-27 | 2011-09-27 | High-frequency induction brazing welding process for aluminum alloy base plate and stainless steel water inlet/outlet pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102423822A true CN102423822A (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102896547A Pending CN102423822A (en) | 2011-09-27 | 2011-09-27 | High-frequency induction brazing welding process for aluminum alloy base plate and stainless steel water inlet/outlet pipe |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1629597A (en) * | 2004-07-15 | 2005-06-22 | 浙江银轮机械股份有限公司 | Connection method for tube plate and pipe joint of tube-shell/tube-sheet type heat exchanger |
| JP2009214180A (en) * | 2008-03-12 | 2009-09-24 | Andrew Llc | Cable and connector assembly apparatus, and method of use thereof |
| CN101642840A (en) * | 2009-08-27 | 2010-02-10 | 中国北车集团大连机车研究所有限公司 | Induction welding method for aluminum water-cooling base plate and stainless joint |
-
2011
- 2011-09-27 CN CN2011102896547A patent/CN102423822A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1629597A (en) * | 2004-07-15 | 2005-06-22 | 浙江银轮机械股份有限公司 | Connection method for tube plate and pipe joint of tube-shell/tube-sheet type heat exchanger |
| JP2009214180A (en) * | 2008-03-12 | 2009-09-24 | Andrew Llc | Cable and connector assembly apparatus, and method of use thereof |
| CN101642840A (en) * | 2009-08-27 | 2010-02-10 | 中国北车集团大连机车研究所有限公司 | Induction welding method for aluminum water-cooling base plate and stainless joint |
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Application publication date: 20120425 |