CN1018988B - Fiber-welding method for aluminium - Google Patents
Fiber-welding method for aluminiumInfo
- Publication number
- CN1018988B CN1018988B CN 88103674 CN88103674A CN1018988B CN 1018988 B CN1018988 B CN 1018988B CN 88103674 CN88103674 CN 88103674 CN 88103674 A CN88103674 A CN 88103674A CN 1018988 B CN1018988 B CN 1018988B
- Authority
- CN
- China
- Prior art keywords
- chamber
- powder
- water
- aluminium
- solder flux
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3603—Halide salts
- B23K35/3605—Fluorides
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The present invention relates to a braze welding method for making aluminium or aluminium alloy pass through a continuous furnace composed of a drying chamber, a temperature rising chamber, a braze welding chamber, a cooling chamber, etc. and making welding material molten and solidified on a component. The present invention is characterized in that the front segment of the drying chamber is provided with a welding flux coating chamber, and a welding flux generating device is arranged contiguously to the welding flux coating chamber; after 30% to 46% (weight) of AlF-[3] powder and 54% to 70% (weight) of K-AiF-[6] powder are pulverized and mixed under the condition of the existence of water to form water suspending liquid in the welding flux generating device, the concentration of the water suspending liquid is adjusted to a proportion that the water accounts for 90% to 95%, and the mixed powder accounts for 5% to 10%, and the water suspending liquid is coated on the aluminium component in the welding flux coating chamber.
Description
The present invention relates to a kind of flux coating method that is used for the brazed aluminum parts.What in more detail, relate to for the oxide-film of removing aluminum or aluminum alloy and solder surface when the soldering to use as solder flux is a kind of coating method water-insoluble, also not corrodible fluoride class solder flux when having water to exist after soldering.
Particularly, the method for welding that proposes among the present invention is to use commercially available medicament.Have and make the stable composition of solder flux and have very high economy and make on the spot as the operation in the continuous braze welding method, it is possible that the continuous solder flux of the series of processes of the generation that comprises solder flux and coating is applied as.
As the non-aggressive solder flux that aluminium soldering is used, the solder flux of fluoride class is just in practicability.
Their representative can be enumerated (a) and contain ptfe aluminum potassium (K Al F
4) 65.5-99.9(weight) % and potassium hexafluoroaluminate (K
3Al F
6) 34.4-0.1(weight) fluoride of % etc., it is documented in the special public clear 58-27037 communique, and this fluoride is with KF and Al F
3Mixed melting forms, and will use as a kind of fine powder behind its cooling curing.Also known (b) is at Al F
3(53-55%) and KF(47-45%) powder in add water and be mixed into behind the pasty state making its drying below 200 ℃, it is used as solder flux.
But, this (a) and (b) method are with the raw material mixed melting or make pasty state and make product, for the product that will make as solder flux, must be with its drying, thereby these methods are combined in to go in a series of continuous soldering operations be unusual difficulty.
The objective of the invention is to propose a kind of flux coating method that overcomes the new brazed aluminum parts of above-mentioned difficulties, wherein propose AlF
3And K
3AlF
6As raw material with 30-46(weight) AlF of %
3With 70-54(weight) K of %
3AlF
6Water mixes, the method that soldering is carried out in coating as fine powder.
The present invention is used for the flux coating method of brazed aluminum parts, it is characterized in that: the leading portion at above-mentioned hothouse is provided with the flux coating chamber, in abutting connection with this flux coating chamber the solder flux generating apparatus is set, and makes 30-46(weight in this solder flux generating apparatus) %AlF
3Powder and 70-54(weight) %K
3AlF
6Powder is adjusted to the ratio of 95-90% and mixed-powder 5-10% with the concentration of this water slurry, and in above-mentioned flux coating chamber it is coated on the aluminium parts after pulverizing when having water to exist and mixing the formation water slurry.
Therefore, in the present invention, the solder flux raw material is to pulverize with the form of water slurry, mixes, the solder flux that obtains is the form coating with water slurry, therefore can easily solder flux generation and working procedure of coating thereof be gone into as an operation group in the continuous braze welding method.In other words, can finish the aluminium continuous braze welding method of the operation of the generation of solder flux and coating thereof being incorporated into flow process according to the present invention.
The inventive method as previously mentioned, solder flux adopts commercially available medicament and generates as the ring of one in the continuous braze welding operation, therefore can carry out soldering fully continuously and has remarkable effect.
And the moisture that the water that uses in mixing the solder flux generative process according to the present invention can be used as water slurry (so that being coated in thinly on the soldering parts) uses, thereby the flow process advantages of simple, has continuous braze welding and can reach the advantage of high quality and low cost.
Followingly illustrate in greater detail with reference to embodiments of the invention and accompanying drawing.
Accompanying drawing is the explanation profile that is suitable for implementing continuous oven of the present invention.
Symbol description
1-flux coating chamber, 2-hothouse, 3-intensification chamber, 4-braze chamber, 5-cooling chamber, 10-flux coating groove, 11-flux coating pump, 12-injector, 21-solder flux generating apparatus, 23-AlF
3The powder groove, 24-K
3AlF
6The powder groove.
Embodiment
Shown in the accompanying drawing is to be suitable for the continuous atmosphere furnace that aluminium soldering is used for implementing the present invention.
This atmosphere furnace is formed by flux coating chamber 1, hothouse 2, intensification chamber 3, braze chamber 4 and cooling chamber 5 are set continuously, and in these chambers, wire-mesh belt 6 cycles through towards right-hand lay on figure.
In above-mentioned each chamber, by sending into and, make each chamber keep certain atmosphere in gas access 7 by the N gas that direction shown in the arrow among the figure flows.And the aluminum or aluminum alloy parts are placed on the guipure 6 of flux coating chamber 1 side and advance in stove, carry out soldering.
Flux coating groove 10 is formed at the bottom of flux coating chamber 1, stores the solder flux suspension that is generated by the solder flux generating apparatus 21 that is contained in above the flux coating chamber 1 in this groove 10.Injector 12 is set above in flux coating chamber 1 or on the adjoining position, the solder flux suspension of flux coating pump 11 pumpings is coated on the aluminium parts to be brazed.
In aforesaid solder flux generating apparatus 21, be provided with the agitator 8 that drives with the electro-motor (not shown), be provided with above it and store Al F
3The hopper chute 23 of powder and storage K
3Al F
6The identical hopper chute 24 of powder.
The 22nd, circulating pump, this pump couples together the bottom of solder flux generating apparatus 21 and top by pipe.When circulating pump was worked, the raw material in the solder flux generating apparatus circulated and agitator 8 co-operatings in the direction of arrows, and raw material is mixed.On solder flux generating apparatus 21 and flux coating groove 10, be connected to feed pipe (not illustrating in the drawings) in order to simplify drawing.
Adopt the continuous oven of said structure, with 39(weight) the Al F of %
3Powder and 61(weight) K of %
3Al F
6Powder is from Al F
3Groove 23 and K
3Al F
6Groove 24 is sent into solder flux generating apparatus 21, and operation cycle pump 22 and agitator are sneaked into water, after pulverizing and mixing, delivers in the groove 10 of flux coating chamber 1, and the concentration of gained solder flux water slurry is adjusted to 95-90% water mixing 5-10% solder flux.This ratio is the optimised quantity that the mixing solder flux evenly can be coated on the aluminium parts to be welded.
Drive the solder flux water slurry that solder flux coating pump 11 will mix up concentration and be coated on the aluminium parts of scolder by injector 12, by be dried, series of processes such as intensification, soldering (605 ℃), cooling obtain good soldering.The atmosphere of braze chamber 4 is aforesaid N, and dew point contains oxygen below 50ppm below-40 ℃.
According to measuring, 39(weight) %Al F
3With 61(weight) %K
3Al F
6The fusing point of mixing solder flux be 560 ℃, and 30-46(weight) %Al F
3With 70-54(weight) %K
3Al F
6The fusing point of mixing solder flux in 560-575 ℃ scope, can be in the following fusion of general brazing temperature of aluminium, thereby think and be suitable for achieving the goal.
Claims (1)
- A kind of flux coating method that is used for the brazed aluminum parts is characterized in that: the leading portion at above-mentioned hothouse is provided with the flux coating chamber, in abutting connection with this flux coating chamber the solder flux generating apparatus is set, and makes 30-46 (weight) %Al F in this solder flux generating apparatus 3Powder and 70-54 (weight) %K 3Al F 6Powder is adjusted to the ratio of 95-90% and mixed-powder 5-10% with the concentration of this water slurry, and in above-mentioned flux coating chamber it is coated on the aluminium parts after pulverizing when having water to exist and mixing the formation water slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103674 CN1018988B (en) | 1988-06-18 | 1988-06-18 | Fiber-welding method for aluminium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88103674 CN1018988B (en) | 1988-06-18 | 1988-06-18 | Fiber-welding method for aluminium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1038783A CN1038783A (en) | 1990-01-17 |
| CN1018988B true CN1018988B (en) | 1992-11-11 |
Family
ID=4832700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88103674 Expired CN1018988B (en) | 1988-06-18 | 1988-06-18 | Fiber-welding method for aluminium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1018988B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006150436A (en) * | 2004-12-01 | 2006-06-15 | Denso Corp | Method for forming flux layer on sheet member made of aluminum, flux composition and sheet member made of aluminum with flux layer formed |
| CN113210783A (en) * | 2021-05-19 | 2021-08-06 | 扬州威特科技有限公司 | Brazing process for seal type radiator |
-
1988
- 1988-06-18 CN CN 88103674 patent/CN1018988B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1038783A (en) | 1990-01-17 |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |