CN107252991A - Aluminium alloy brazing filler metal and preparation method thereof - Google Patents
Aluminium alloy brazing filler metal and preparation method thereof Download PDFInfo
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- CN107252991A CN107252991A CN201710480258.XA CN201710480258A CN107252991A CN 107252991 A CN107252991 A CN 107252991A CN 201710480258 A CN201710480258 A CN 201710480258A CN 107252991 A CN107252991 A CN 107252991A
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- filler metal
- brazing filler
- aluminium
- aluminium alloy
- alloy brazing
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Classifications
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- 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
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
- B23K35/286—Al as the principal constituent
-
- 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
- B23K35/40—Making wire or rods for soldering or welding
Abstract
The present invention provides a kind of aluminium alloy brazing filler metal and the preparation method of the aluminium alloy brazing filler metal.It is aluminium that the aluminium alloy brazing filler metal, which contains the silicon that mass percentage content is 11~13%, the praseodymium that mass percentage content is 0.1~1.0%, surplus,.The aluminium alloy brazing filler metal of the present invention has the advantages that fusing point is low, mobility is good and spreadability is good.
Description
Technical field
The present invention relates to aluminum alloy solder technology field, more particularly to a kind of aluminium alloy brazing filler metal and the aluminium alloy brazing filler metal
Preparation method.
Background technology
Aluminium and aluminium alloy are due to density is small, thermal conductivity is high, electrical conductivity is high, intensity is high, corrosion resistance is good and specific strength high
The advantages of, it is widely used in the fields such as Aeronautics and Astronautics, petrochemical industry, automobile and machinery.
Soldering as a kind of important connection method, with heating-up temperature is relatively low, mother metal is difficult fusing, malformation is small,
The advantages of production efficiency is high, joint is attractive in appearance, is increasingly widely applied in actual production.
Aluminium-silicon solder has the advantages that good wetability, good fluidity, corrosion resistance are strong, as most popular at present
Aluminium and aluminium alloy brazing solder.However, aluminium and aluminium alloy are close with the fusing point of aluminium-silicon solder, aluminium-silicon solder is being used to aluminium
And during aluminium alloy carries out soldering, easily there are the phenomenons such as burning, corrosion in aluminium and aluminium alloy, so as to influence the company of welding finished product
Connect intensity.
The content of the invention
It is a primary object of the present invention to provide a kind of aluminium alloy brazing filler metal, it is intended to reduce fusing point and the raising of aluminium alloy brazing filler metal
The bonding strength of welding finished product.
In order to solve the above technical problems, it is 11~13% that the aluminium alloy brazing filler metal that the present invention is provided, which contains mass percentage content,
Silicon, mass percentage content be 0.1~1.0% praseodymium, surplus be aluminium.
Preferably, the silicon, mass percentage content that the aluminium alloy brazing filler metal contains that mass percentage content is 12% are 0.3%
Praseodymium, surplus be aluminium.
Preferably, the aluminium alloy brazing filler metal also contains copper, and the mass percentage content of the copper is more than 0, less than or equal to 0.3%.
Preferably, the mass percentage content of the copper is 0.2%.
Preferably, the aluminium alloy brazing filler metal also contains zinc, and the mass percentage content of the zinc is more than 0, less than or equal to 0.2%.
Preferably, the mass percentage content of the zinc is 0.1%.
Preferably, the aluminium alloy brazing filler metal also contains iron, and the mass percentage content of the iron is more than 0, less than or equal to 0.8%.
Preferably, the mass percentage content of the iron is 0.5%.
The present invention also provides a kind of preparation method of aluminium alloy brazing filler metal, comprises the following steps：
Aluminium block is provided, aluminium block is heated, aluminium block is melted；
Silico briquette is provided, silico briquette is added in the aluminium of molten state, silico briquette is carried out with the aluminium in molten state
Isothermal holding, melts silico briquette, obtains aluminum-silicon alloy liquid；
Praseodymium block is provided, praseodymium block is added into aluminum-silicon alloy liquid, the praseodymium block and aluminum-silicon alloy liquid are heated, obtained
Obtain multicomponent alloy mixed liquor；
Forming processes are carried out to the multicomponent alloy mixed liquor, aluminium alloy brazing filler metal is obtained, the aluminium alloy brazing filler metal contains quality hundred
It is aluminium to divide praseodymium, surplus that the silicon for being 11~13% than content, mass percentage content are 0.1~1.0%.
Preferably, obtain after aluminum-silicon alloy liquid, before praseodymium block is added into aluminum-silicon alloy liquid, in addition to：
At least one of copper billet, spelter, iron block three are added in aluminum-silicon alloy liquid, mixture is obtained；
The mixture is heated, the mixture is melted, then praseodymium block is added to mixed in molten state
In compound, the praseodymium block is heated with the mixture in molten state, multicomponent alloy mixed liquor is obtained.
The aluminium alloy brazing filler metal of technical solution of the present invention contains the silicon that mass percentage content is 11~13%, mass percent
Praseodymium that content is 0.1~1.0%, surplus are aluminium.Aluminium and silicon can as the aluminium alloy brazing filler metal matrix, praseodymium can reduce the aluminium alloy
The fusing point of solder, thus the corrosion of aluminum or aluminum alloy element to be welded can be avoided, improve weld strength.
In addition, when aluminum or aluminum alloy element being brazed in into other elements using the aluminium alloy brazing filler metal, the aluminium in weld seam
Solder alloy is gradually solidified, and aluminum or aluminum alloy element is connected with other elements.During aluminium alloy brazing filler metal solidifies, praseodymium
As alterant, the solidification front of solid/liquid interfaces is enriched in, the silicon atom in liquid phase state can be prevented to be spread to primary phase,
So as to slow down the coarsening rate of primary silicon so that the particle diameter of primary silicon is smaller, can further improve aluminum or aluminum alloy element and its
The weld strength of his element.Further, the praseodymium can also make the aluminium alloy brazing filler metal have the advantages that mobility is good and spreadability is good.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 contrasts for 1-5 of embodiment of the present invention aluminium alloy brazing filler metal with the fusing point of the existing aluminium alloy brazing filler metal of embodiment 6
Figure.
The spreading area of aluminium alloy brazing filler metal and the existing aluminium alloy brazing filler metal of embodiment 6 that Fig. 2 is 1-5 of the embodiment of the present invention
Comparison diagram.
Fig. 3 is to carry out the soldering finished product of soldering with using embodiment 6 using 1-5 of embodiment of the present invention aluminium alloy brazing filler metal
Existing aluminium alloy brazing filler metal carries out the tensile strength comparison diagram of the soldering finished product of soldering.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
It is to be appreciated that institute is directional in the embodiment of the present invention indicates that (such as up, down, left, right, before and after ...) is only used
In explaining relative position relation, motion conditions under a certain particular pose (as shown in drawings) between each part etc., if should
When particular pose changes, then directionality indicates also correspondingly therewith to change.
In addition, the description for being related to " first ", " second " etc. in the present invention is only used for describing purpose, and it is not intended that referring to
Show or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " are defined
At least one this feature can be expressed or be implicitly included to two " feature.In addition, the technical scheme between each embodiment can
To be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical scheme occurs
It is conflicting or when can not realize it will be understood that the combination of this technical scheme is not present, also not in the protection model of application claims
Within enclosing.
The aluminium alloy brazing filler metal that the present invention is provided contains the silicon (Si) that mass percentage content is 11~13%, mass percent
Praseodymium (Pr) that content is 0.1~1.0%, surplus are aluminium (Al).
The aluminium alloy brazing filler metal of technical solution of the present invention contains the silicon that mass percentage content is 11~13%, mass percent
Praseodymium that content is 0.1~1.0%, surplus are aluminium.Aluminium and silicon can as the aluminium alloy brazing filler metal matrix, praseodymium can reduce the aluminium alloy
The fusing point of solder, thus the corrosion of aluminum or aluminum alloy element to be welded can be avoided, improve weld strength.
In addition, when aluminum or aluminum alloy element being brazed in into other elements using the aluminium alloy brazing filler metal, the aluminium in weld seam
Solder alloy is gradually solidified, and aluminum or aluminum alloy element is connected with other elements.During aluminium alloy brazing filler metal solidifies, praseodymium
As alterant, the solidification front of solid/liquid interfaces is enriched in, the silicon atom in liquid phase state can be prevented to be spread to primary phase,
So as to slow down the coarsening rate of primary silicon so that the particle diameter of primary silicon is smaller, can further improve aluminum or aluminum alloy element and its
The weld strength of his element.
Further, the praseodymium can also make the aluminium alloy brazing filler metal have the advantages that mobility is good and spreadability is good.
The aluminium alloy brazing filler metal contains the silicon that mass percentage content is 12%, the praseodymium that mass percentage content is 0.3%, remaining
Measure as aluminium.
The aluminium alloy brazing filler metal of technical solution of the present invention contains the silicon that mass percentage content is 12%, mass percentage content
It is aluminium for 0.3% praseodymium, surplus.Silicon, praseodymium, the aluminium of above-mentioned mass percentage content can further reduce the molten of aluminium alloy brazing filler metal
Point, improves the weld strength of aluminum or aluminum alloy element and other elements.
The aluminium alloy brazing filler metal also contains copper (Cu), and the mass percentage content of the copper is more than 0, less than or equal to 0.3%.
The aluminium alloy brazing filler metal of technical solution of the present invention also contains copper, and the mass percentage content of the copper is more than 0, is less than or equal to
0.3%, copper can reduce the fusing point of aluminium alloy brazing filler metal.
The mass percentage content of the copper is 0.2%.
The aluminium alloy brazing filler metal of technical solution of the present invention is also containing the copper that mass percentage content is 0.2%, the content range
Interior copper can be effectively reduced the fusing point of aluminium alloy brazing filler metal.
The aluminium alloy brazing filler metal also contains zinc (Zn), and the mass percentage content of the zinc is more than 0, less than or equal to 0.2%.
The aluminium alloy brazing filler metal of technical solution of the present invention also contains zinc, and the mass percentage content of the zinc is more than 0, is less than or equal to
0.2%, zinc can reduce the fusing point of aluminium alloy brazing filler metal.
The mass percentage content of the zinc is 0.1%.
The aluminium alloy brazing filler metal of technical solution of the present invention is also containing the zinc that mass percentage content is 0.1%, the content range
Interior zinc can be effectively reduced the fusing point of aluminium alloy brazing filler metal.
The aluminium alloy brazing filler metal also contains iron (Fe), and the mass percentage content of the iron is more than 0, less than or equal to 0.8%.
The aluminium alloy brazing filler metal of technical solution of the present invention also contains iron, and the mass percentage content of the iron is more than 0, is less than or equal to
0.8%, iron can improve the bonding strength of brazing product.
The mass percentage content of the iron is 0.5%.
The aluminium alloy brazing filler metal of technical solution of the present invention is also containing the iron that mass percentage content is 0.5%, the content range
Interior iron can effectively improve the bonding strength of brazing product.
The present invention also provides a kind of preparation method of aluminium alloy brazing filler metal, comprises the following steps：
Aluminium block is provided, aluminium block is put into crucible, crucible is placed in the smelting furnace that temperature is 700~800 DEG C, to aluminium block
Heated, be completely melt aluminium block；
Silico briquette is provided, silico briquette is added in the aluminium of molten state, silico briquette is carried out with the aluminium in molten state
Isothermal holding, melts silico briquette, obtains aluminum-silicon alloy liquid, the time of the isothermal holding is 10~20 minutes；
Praseodymium block is provided, praseodymium block is added into aluminum-silicon alloy liquid, is sufficiently stirred for, the praseodymium block and aluminum-silicon alloy liquid are added
Heat treatment, i.e. the temperature of smelting furnace is risen into 700~900 DEG C, after praseodymium block melts completely, is incubated 10~20 minutes, obtains
Multicomponent alloy mixed liquor；
Forming processes are carried out to the multicomponent alloy mixed liquor, aluminium alloy brazing filler metal is obtained, the aluminium alloy brazing filler metal contains quality hundred
It is aluminium to divide praseodymium, surplus that the silicon for being 11~13% than content, mass percentage content are 0.1~1.0%.The forming processes can be
Casting is handled, and multicomponent alloy mixed liquor is cast into ingot casting.
It should be understood that the purity of the aluminium block, silico briquette and praseodymium block is more than 99.6%.
The aluminium alloy brazing filler metal of technical solution of the present invention contains the silicon that mass percentage content is 11~13%, mass percent
Praseodymium that content is 0.1~1.0%, surplus are aluminium.Aluminium and silicon can as the aluminium alloy brazing filler metal matrix, praseodymium can reduce the aluminium alloy
The fusing point of solder, thus the corrosion of aluminum or aluminum alloy element to be welded can be avoided, improve weld strength.
In addition, when aluminum or aluminum alloy element being brazed in into other elements using the aluminium alloy brazing filler metal, the aluminium in weld seam
Solder alloy is gradually solidified, and aluminum or aluminum alloy element is connected with other elements.During aluminium alloy brazing filler metal solidifies, praseodymium
As alterant, the solidification front of solid/liquid interfaces is enriched in, the silicon atom in liquid phase state can be prevented to be spread to primary phase,
So as to slow down the coarsening rate of primary silicon so that the particle diameter of primary silicon is smaller, can further improve aluminum or aluminum alloy element and its
The weld strength of his element.
Further, the praseodymium can also make the aluminium alloy brazing filler metal have the advantages that mobility is good and spreadability is good.
Obtain aluminum-silicon alloy liquid after there is provided praseodymium block before, it is further comprising the steps of：
At least one of copper billet, spelter, iron block three are added in aluminum-silicon alloy liquid, mixture is obtained；
The mixture is heated, the mixture is melted.
It should be understood that the purity of the copper billet, spelter, iron block is more than 99.6%.
Specifically, at least one of copper billet, spelter, iron block three can be added in aluminum-silicon alloy liquid, by smelting furnace
Temperature rises to 700~900 DEG C, after thing to be mixed melts completely, obtains mixing liquid, and the mixing liquid is incubated into 10~20 points
Clock.
It is further comprising the steps of after the described pair of mixture heats：Praseodymium block is provided, praseodymium block is added to being in
In the mixture of molten state, the praseodymium block is heated with the mixture in molten state, multicomponent alloy is obtained and mixes
Close liquid.
Specifically, praseodymium block can be added in the mixing liquid, composition stirring, after praseodymium melts completely, insulation 10~20
Minute, the multicomponent alloy mixed liquor is obtained, forming processes are carried out to the multicomponent alloy mixed liquor, the aluminium alloy brazing filler metal is obtained.
Embodiment one：
1st, raw material is provided, the raw material includes aluminium block, silico briquette, praseodymium, copper billet, spelter and iron block.Wherein, the aluminium block accounts for the raw material
Mass percentage content be 91.35%, the silico briquette account for the raw material mass percentage content be 7.92%, the praseodymium accounts for the raw material
Mass percentage content be 0.08%, the copper billet account for the raw material mass percentage content be 0.2%, the spelter accounts for the raw material
Mass percentage content be 0.15%, the mass percentage content that the iron block accounts for the raw material is 0.3%, it is possible to understand that, it is former
Material each component can carry out removal of impurities processing in fusion process so that each component can lose, wherein compared to other components, aluminium
The loss of block is larger.
2nd, aluminium block is put into crucible, then crucible is placed in the smelting furnace that temperature is 750 DEG C, aluminium block is melted completely
Change；
3rd, it will add into the aluminium in molten state, be incubated 10 minutes, obtain aluminum-silicon alloy liquid；
4th, it will be added in mixing liquid, be sufficiently stirred for, after praseodymium is completely melt, be incubated 10 minutes；
5th, by solution-cast into ingot casting, aluminium alloy brazing filler metal is produced, the aluminium alloy brazing filler metal contains mass percentage content and is
The copper that praseodymium that 11% silicon, mass percentage content are 0.1%, mass percentage content are 0.25%, mass percentage content
The iron for being 0.35% for 0.2% zinc, mass percentage content, surplus are aluminium.
Join Fig. 1-3, the fusing point of the aluminium alloy brazing filler metal of embodiment one is 587 DEG C, and spreading area is 189mm2, using embodiment
The tensile strength of the soldering finished product of one aluminium alloy brazing filler metal is 82.5MPa.
Embodiment two：
1st, raw material is provided, the raw material includes aluminium block, silico briquette, praseodymium, copper billet, spelter and iron block.Wherein, the aluminium block accounts for the raw material
Mass percentage content be 90.49%, the silico briquette account for the raw material mass percentage content be 8.8%, the praseodymium accounts for the raw material
Mass percentage content be 0.28%, the copper billet account for the raw material mass percentage content be 0.11%, the spelter accounts for the original
The mass percentage content of material is 0.07%, and the mass percentage content that the iron block accounts for the raw material is 0.25%, it is possible to understand that,
Feed components can carry out removal of impurities processing in fusion process so that each component can lose, wherein compared to other components,
The loss of aluminium block is larger.
2nd, aluminium block is put into crucible, then crucible is placed in the smelting furnace that temperature is 680 DEG C, aluminium block is melted completely
Change；
3rd, it will add into the aluminium in molten state, be incubated 12 minutes, obtain aluminum-silicon alloy liquid；
4th, it will be added in mixing liquid, be sufficiently stirred for, after praseodymium is completely melt, be incubated 2 minutes；
5th, by solution-cast into ingot casting, aluminium alloy brazing filler metal is produced, the aluminium alloy brazing filler metal contains mass percentage content and is
The copper that praseodymium that 12% silicon, mass percentage content are 0.3%, mass percentage content are 0.13%, mass percentage content
The iron for being 0.3% for 0.1% zinc, mass percentage content, surplus are aluminium.
Join Fig. 1-3, the fusing point of the aluminium alloy brazing filler metal of embodiment two is 583 DEG C, and spreading area is 193mm2, using embodiment
The tensile strength of the soldering finished product of two aluminium alloy brazing filler metal is 90MPa.
Embodiment three：
1st, raw material is provided, the raw material includes aluminium block, silico briquette, praseodymium, copper billet, spelter and iron block.Wherein, the aluminium block accounts for the raw material
Mass percentage content be 90%, the silico briquette account for the raw material mass percentage content be 8.52%, the praseodymium accounts for the raw material
Mass percentage content is 0.48%, and the mass percentage content that the copper billet accounts for the raw material is 0.25%, and the spelter accounts for the raw material
Mass percentage content be 0.15%, the mass percentage content that the iron block accounts for the raw material is 0.6%, it is possible to understand that, it is former
Material each component can carry out removal of impurities processing in fusion process so that each component can lose, wherein compared to other components, aluminium
The loss of block is larger.
2nd, aluminium block is put into crucible, then crucible is placed in the smelting furnace that temperature is 690 DEG C, aluminium block is melted completely
Change；
3rd, it will add into the aluminium in molten state, be incubated 15 minutes, obtain aluminum-silicon alloy liquid；
4th, it will be added in mixing liquid, be sufficiently stirred for, after praseodymium is completely melt, be incubated 15 minutes；
5th, by solution-cast into ingot casting, aluminium alloy brazing filler metal is produced, the aluminium alloy brazing filler metal contains mass percentage content and is
Copper that praseodymium that 12% silicon, mass percentage content are 0.5%, mass percentage content are 0.3%, mass percentage content are
Iron that 0.2% zinc, mass percentage content are 0.7%, surplus are aluminium.
Join Fig. 1-3, the fusing point of the aluminium alloy brazing filler metal of embodiment three is 585 DEG C, and spreading area is 185mm2, using embodiment
The tensile strength of the soldering finished product of three aluminium alloy brazing filler metal is 87.5MPa.
Example IV：
1st, raw material is provided, the raw material includes aluminium block, silico briquette, praseodymium, copper billet, spelter and iron block.Wherein, the aluminium block accounts for the raw material
Mass percentage content be 90.7%, the silico briquette account for the raw material mass percentage content be 8.1%, the praseodymium accounts for the raw material
Mass percentage content is 0.68%, and the mass percentage content that the copper billet accounts for the raw material is 0.12%, and the spelter accounts for the raw material
Mass percentage content be 0.1%, the iron block account for the raw material mass percentage content be 0.3%, it is possible to understand that, raw material
Each component can carry out removal of impurities processing in fusion process so that each component can lose, wherein compared to other components, aluminium block
Loss it is larger.
2nd, aluminium block is put into crucible, then crucible is placed in the smelting furnace that temperature is 730 DEG C, aluminium block is melted completely
Change；
3rd, it will add into the aluminium in molten state, be incubated 18 minutes, obtain aluminum-silicon alloy liquid；
4th, it will be added in mixing liquid, be sufficiently stirred for, after praseodymium is completely melt, be incubated 18 minutes；
5th, by solution-cast into ingot casting, aluminium alloy brazing filler metal is produced, the aluminium alloy brazing filler metal contains mass percentage content and is
Copper that praseodymium that 11% silicon, mass percentage content are 0.7%, mass percentage content are 0.15%, mass percentage content
The iron for being 0.35% for 0.13% zinc, mass percentage content, surplus are aluminium.
Join Fig. 1-3, the fusing point of the aluminium alloy brazing filler metal of example IV is 586 DEG C, and spreading area is 182mm2, using embodiment
The tensile strength of the soldering finished product of four aluminium alloy brazing filler metal is 83.5MPa.
Embodiment five：
1st, raw material is provided, the raw material includes aluminium block, silico briquette, praseodymium, copper billet, spelter and iron block.Wherein, the aluminium block accounts for the raw material
Mass percentage content be 88.55%, the silico briquette account for the raw material mass percentage content be 10%, the praseodymium accounts for the raw material
Mass percentage content is 0.9%, and the mass percentage content that the copper billet accounts for the raw material is 0.15%, and the spelter accounts for the raw material
Mass percentage content is 0.1%, and the mass percentage content that the iron block accounts for the raw material is 0.3%, it is possible to understand that, raw material is each
Component can carry out removal of impurities processing in fusion process so that each component can lose, wherein compared to other components, aluminium block
Loss is larger.
2nd, aluminium block is put into crucible, then crucible is placed in the smelting furnace that temperature is 800 DEG C, aluminium block is melted completely
Change；
3rd, it will add into the aluminium in molten state, be incubated 20 minutes, obtain aluminum-silicon alloy liquid；
4th, it will be added in mixing liquid, be sufficiently stirred for, after praseodymium is completely melt, be incubated 20 minutes；
5th, by solution-cast into ingot casting, aluminium alloy brazing filler metal is produced, the aluminium alloy brazing filler metal contains mass percentage content and is
Copper that praseodymium that 11% silicon, mass percentage content are 1%, mass percentage content are 0.17%, mass percentage content are
Iron that 0.12% zinc, mass percentage content are 0.35%, surplus are aluminium.
Join Fig. 1-3, the fusing point of the aluminium alloy brazing filler metal of embodiment five is 589 DEG C, and spreading area is 173mm2, using embodiment
The tensile strength of the soldering finished product of five aluminium alloy brazing filler metal is 80MPa.
Embodiment six：
It is aluminium that aluminium alloy brazing filler metal of the prior art, which contains the silicon that mass percentage content is 12%, clout,.
Join Fig. 1-3, the fusing point of the aluminium alloy brazing filler metal of embodiment six is 591 DEG C, and spreading area is 154mm2, using embodiment
The tensile strength of the soldering finished product of six aluminium alloy brazing filler metal is 78MPa.
Join Fig. 1-3, the fusing point of the aluminium alloy brazing filler metal of the embodiment of the present invention one to five is closed far below aluminium of the prior art
The fusing point of gold brazing filler metal, the spreading area of the aluminium alloy brazing filler metal of embodiment one to five is much larger than aluminium alloy brazing filler metal of the prior art
Spreading area, using the aluminium alloy brazing filler metal of embodiment one to five soldering finished product tensile strength much larger than using embodiment
The tensile strength of the soldering finished product of six aluminium alloy brazing filler metal of the prior art.
The preferred embodiments of the present invention are these are only, are not intended to limit the scope of the invention, it is every in the present invention
Inventive concept under, the equivalent structure transformation made using description of the invention and accompanying drawing content, or be directly or indirectly used in
Other related technical fields are included in the scope of patent protection of the present invention.
Claims (10)
1. a kind of aluminium alloy brazing filler metal, it is characterised in that the aluminium alloy brazing filler metal contain the silicon that mass percentage content is 11~13%,
Praseodymium that mass percentage content is 0.1~1.0%, surplus are aluminium.
2. aluminium alloy brazing filler metal as claimed in claim 1, it is characterised in that the aluminium alloy brazing filler metal contains mass percentage content and is
Praseodymium that 12% silicon, mass percentage content are 0.3%, surplus are aluminium.
3. aluminium alloy brazing filler metal as claimed in claim 1, it is characterised in that the aluminium alloy brazing filler metal also contains copper, the quality of the copper
Degree is more than 0, less than or equal to 0.3%.
4. aluminium alloy brazing filler metal as claimed in claim 3, it is characterised in that the mass percentage content of the copper is 0.2%.
5. aluminium alloy brazing filler metal as claimed in claim 1, it is characterised in that the aluminium alloy brazing filler metal also contains zinc, the quality of the zinc
Degree is more than 0, less than or equal to 0.2%.
6. aluminium alloy brazing filler metal as claimed in claim 5, it is characterised in that the mass percentage content of the zinc is 0.1%.
7. the aluminium alloy brazing filler metal as described in claim 1-6 is any, it is characterised in that the aluminium alloy brazing filler metal also contains iron, the iron
Mass percentage content be more than 0, less than or equal to 0.8%.
8. aluminium alloy brazing filler metal as claimed in claim 7, it is characterised in that the mass percentage content of the iron is 0.5%.
9. a kind of preparation method of aluminium alloy brazing filler metal, comprises the following steps：
Aluminium block is provided, aluminium block is heated, aluminium block is melted；
Silico briquette is provided, silico briquette is added in the aluminium of molten state, silico briquette is incubated with the aluminium in molten state
Processing, melts silico briquette, obtains aluminum-silicon alloy liquid；
Praseodymium block is provided, praseodymium block is added into aluminum-silicon alloy liquid, the praseodymium block and aluminum-silicon alloy liquid are heated, is obtained many
First alloy mixed liquor；
Forming processes are carried out to the multicomponent alloy mixed liquor, aluminium alloy brazing filler metal is obtained, the aluminium alloy brazing filler metal contains mass percent
Praseodymium that silicon that content is 11~13%, mass percentage content are 0.1~1.0%, surplus are aluminium.
10. the preparation method of aluminium alloy brazing filler metal as claimed in claim 9, it is characterised in that obtain after aluminum-silicon alloy liquid, by praseodymium
Before block is added into aluminum-silicon alloy liquid, in addition to：
At least one of copper billet, spelter, iron block three are added in aluminum-silicon alloy liquid, mixture is obtained；
The mixture is heated, melts the mixture, then praseodymium block is added to the mixture in molten state
In, the praseodymium block is heated with the mixture in molten state, multicomponent alloy mixed liquor is obtained.
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| JPH05117796A (en) * | 1991-10-28 | 1993-05-14 | Nippon Light Metal Co Ltd | Aluminum alloy for brazing sheet |
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| CN106624439A (en) * | 2016-12-13 | 2017-05-10 | 天长市通联焊业有限公司 | Aluminum alloy brazing filler metal containing TiC nano particles and preparing method |
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| JPH05117796A (en) * | 1991-10-28 | 1993-05-14 | Nippon Light Metal Co Ltd | Aluminum alloy for brazing sheet |
| CN103468982A (en) * | 2013-08-12 | 2013-12-25 | 安徽环宇铝业有限公司 | Production technology of praseodymium-containing ultrahigh-strength aluminum alloy section bar |
| CN103469028A (en) * | 2013-08-16 | 2013-12-25 | 南昌大学 | Rare earth element praseodymium alloyed aluminum-silicon alloy and preparation method thereof |
| CN103624416A (en) * | 2013-11-07 | 2014-03-12 | 航天科工防御技术研究试验中心 | Vacuum high-temperature aluminum solder and preparation method thereof |
| CN105568077A (en) * | 2015-12-28 | 2016-05-11 | 新疆众和股份有限公司 | Aluminum-silicon eutectic alloy rod used for welding and preparation technique of aluminum-silicon eutectic alloy rod |
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Application publication date: 20171017 |