CN109465564A - The zinc-aluminium medicine core solder that a kind of soldering strength is high, corrosion resistance is strong - Google Patents
The zinc-aluminium medicine core solder that a kind of soldering strength is high, corrosion resistance is strong Download PDFInfo
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- CN109465564A CN109465564A CN201811526929.2A CN201811526929A CN109465564A CN 109465564 A CN109465564 A CN 109465564A CN 201811526929 A CN201811526929 A CN 201811526929A CN 109465564 A CN109465564 A CN 109465564A
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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
- B23K35/282—Zn 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
- B23K35/02—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape
- B23K35/0222—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by mechanical features, e.g. shape for use in soldering, brazing
- B23K35/0227—Rods, wires
-
- 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
-
- 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
- B23K35/362—Selection of compositions of fluxes
-
- 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
- B23K35/406—Filled tubular wire or rods
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Prevention Of Electric Corrosion (AREA)
Abstract
The present invention provides that a kind of soldering strength is high, anticorrosive strong zinc-aluminium medicine core solder, which includes brazing flux inner core and the external metallization skin that is coated on outside brazing flux inner core, and brazing flux inner core is by AlF3Be formulated with RbF binary eutectic, external metallization skin be three-layer sandwich metal skin, which includes outer layer Al and sandwich of layers Zn98Al, preparation method are as follows: 1), by load weighted aluminium melting, be cast into the aluminium ingot casting containing centre bore；2) load weighted Zn98Al alloy melting is cast in centre bore at molten metal, squeezed after ingot casting is cooling, be rolled into the metal skin with three-layer sandwich；3), AlF is weighed by mass fraction3And RbF, it is configured to brazing flux inner core；4) it, takes external metallization suitcase to cover brazing flux inner core, zinc-aluminium medicine core solder is formed by rolling, drawing, solder metal skin of the present invention resists inner core brazing flux and the corrosive nature of ambiance is preferable, to delay or inhibit the generation of solder " embrittlement " phenomenon.
Description
Technical field
The present invention relates to zinc-aluminum brazing filler metal, more particularly, to a kind of soldering strength high, anticorrosive strong zinc-aluminium medicine core solder and
Preparation method.
Background technique
Copper and its alloy have it is excellent it is conductive, thermally conductive, corrosion-resistant and good shape performance, aluminium and its alloy are same
Sample has that density is low, specific strength high and low temperature performance is good, thermal conductivity and conductivity are high and the fine qualities such as processing performance is good.Mesh
It is preceding in fields such as automobile, refrigeration, electric power, electronics, household electrical appliances, to play the respective performance advantage of copper aluminium, and copper material can be saved, reduced
Weight and cost, replacing copper with aluminium achieve gratifying achievements.The acquirement of these achievements depends greatly on copper aluminium welding technology
Development, especially copper aluminium brazing technique is constantly progressive.
Zinc-aluminium medicine core solder is the latest technological achievements of copper aluminium soldering connection, is suitable for gas brazing, induction brazing, resistance pricker
A variety of soldering processes such as weldering, furnace brazing can preferably realize the soldering connection of copper-aluminium joint.
But existing zinc-aluminium medicine core solder comes with some shortcomings: solder aluminium content is low, causes solder intensity itself low and excessive
Zinc easily forms copper zinc brittlement phase with base material copper, causes copper-aluminium joint intensity low；Solder aluminium content is low, causes brazing filler metal melts temperature low
(about 382~410 DEG C), matching aluminum brazing flux active temperature generally higher (about 500 DEG C) namely brazing filler metal melts brazing flux are also
It is not active, cause solder brazing performance poor；Zinc-aluminum brazing filler metal is affected during storage by hygrothermal environment and core brazing flux, past
Become fragile, be hardened with the blackening of core metal skin, solder outside toward the extension solder with the time, brazing property deteriorates therewith, usually
Referred to as " corrode " or " embrittlement ", corrosion or brittle solder are also easy to produce slag inclusion, stomata in brazing process, make under ratio of brazing area
Drop, the intensity and reliability of connector cannot be guaranteed, and seriously limit the application of zinc-aluminium medicine core solder.
To solve above-mentioned deficiency, the soldering strength and corrosion resistance of zinc-aluminium medicine core solder need to be improved；The raising of soldering strength
Need to improve the aluminium content in solder, but the excessively high processing performance that can deteriorate zinc-aluminium medicine core solder of aluminium content.
Summary of the invention
Present invention aim to address the deficiency of existing preparation method, provide that a kind of soldering strength is high, anticorrosive strong zinc
Aluminium medicine core solder, solder metal skin of the present invention resists core brazing flux and the corrosive nature of ambiance is preferable, to delay or press down
The generation of solder " embrittlement " phenomenon is made.
The present invention to solve above-mentioned technical problem the technical solution adopted is that: a kind of soldering strength is high, anticorrosive strong zinc
Aluminium medicine core solder, the medicine core solder include brazing flux inner core and the external metallization skin that is coated on outside brazing flux inner core, brazing flux inner core and outer
The mass fraction of portion's metal skin is respectively as follows: 85 ~ 90 parts of external metallization skin, 10 ~ 15 parts of brazing flux inner core, wherein brazing flux inner core by
AlF3It is formulated with RbF binary eutectic, AlF3It is respectively as follows: AlF with the mass fraction of RbF3 43 parts, 57 parts of RbF；External gold
Category skin is three-layer sandwich metal skin, which includes outer layer and sandwich of layers, and the outer layer is Al, the sandwich of layers
For Zn98Al, the mass fraction of the outer layer is 25 ~ 30 parts, and the mass fraction of the sandwich of layers is 60 ~ 82 parts.
Further, the mass parts ratio of the mass fraction and outer layer of sandwich of layers is 2.5 ~ 3.26.
A kind of preparation method of high, the anticorrosive strong zinc-aluminium medicine core solder of soldering strength, comprising the following steps:
1) it, calculates according to the mass fraction, weighs 25 ~ 30 parts of outer layer Al, 60 ~ 82 parts of sandwich of layers Zn98Al, load weighted aluminium is melted
It refines, be cast into the aluminium ingot casting containing centre bore；
2), Zn98Al alloy melting load weighted in step 1) is cast to the centre bore of the aluminium ingot casting in step 1) at molten metal
It is interior, it squeezed after ingot casting is cooling, be rolled into the metal skin with three-layer sandwich；
3), AlF is weighed by mass fraction343 parts, 57 parts of RbF, are configured to brazing flux inner core, spare；
4), by mass fraction weigh 85 ~ 90 parts of external metallization skin obtained in step 2, it is rapid 3) in brazing flux inner core obtained 10 ~
15 parts, external metallization suitcase is taken to cover brazing flux inner core, zinc-aluminium medicine core solder is formed by rolling, drawing.
Further, the Zn98Al alloying metal liquid of melting in the volume and step 2 of the centre bore of ingot casting in step 1)
Volume is identical.
Beneficial effects of the present invention mainly show as follows: the advantage of the invention is that with the good pure Al of processing performance and
Zn98Al alloy is raw material, prepares the composite metal belt cladding brazing flux powder composition zinc that outer layer is pure Al, sandwich of layers is Zn98Al
Aluminium medicine core solder overcomes the problem of Al content height in traditional zinc-aluminium medicine core solder, poor in processability；Al content mentions in zinc-aluminum brazing filler metal
Height, copper aluminium brazed seam brittlement phase are reduced, and strength of joint significantly improves；Al content is increased to 30% in zinc-aluminum brazing filler metal, zinc-aluminum brazing filler metal fusing
Temperature is about 500 DEG C~510 DEG C, and the AlF to match therewith3Fusion temperature with RbF binary eutectic brazing flux is about 486 DEG C of left sides
The right side, flux activity temperature are higher than 20 DEG C~30 DEG C of fusion temperature, then active temperature is about 506 DEG C~516 DEG C, the two matching
Well, solder brazing performance is good；In addition, the corrosion resistance of pure Al is far superior to ZnAl alloy, the external metallization skin of solder of the present invention
Metal skin with core contact brazing flux is all fine aluminium, and the corrosive nature for resisting core brazing flux and external environment atmosphere is preferable, from
And delay or inhibit the generation of solder " embrittlement " phenomenon.
When a kind of soldering strength of the present invention is high, anticorrosive strong zinc-aluminium medicine core solder is used for copper aluminium soldering, have
The features such as brazing property is good, Joint intensity is high, joint quality is good；When for gas brazing copper aluminum dissimilar metal, there is operation side
Just, the characteristics of strong applicability；In addition, solder of the present invention compared with existing zinc-aluminium medicine core solder, has excellent resistance environment gas
Atmosphere influences and the ability of brazing flux corrosion, solves the problems, such as that solder storage period is short, brazing property is corruptible.
Detailed description of the invention
Fig. 1 is end structure illustration of the invention；
Serial number in figure: 1, outer layer, 2, sandwich of layers, 4, brazing flux inner core.
Specific embodiment
The present invention is described in detail in conjunction with the embodiments, the present embodiment based on the technical solution of the present invention, gives
Detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following embodiments.
Embodiment 1
In conjunction with shown in attached drawing, a kind of soldering strength is high, anticorrosive strong zinc-aluminium medicine core solder, which includes brazing flux inner core
4 and the external metallization skin that is coated on outside brazing flux inner core 4, the mass fraction of brazing flux inner core 4 and external metallization skin is respectively as follows: external gold
Belong to 85 ~ 90 parts of skin, 410 ~ 15 parts of brazing flux inner core, wherein brazing flux inner core 4 is by AlF3It is formulated with RbF binary eutectic, AlF3With
The mass fraction of RbF is respectively as follows: AlF3 43 parts, 57 parts of RbF；External metallization skin is three-layer sandwich metal skin, three-layer sandwich gold
Belonging to skin includes outer layer 1 and sandwich of layers 2, and the outer layer 1 is Al, and the sandwich of layers 2 is Zn98Al, the mass fraction of the outer layer 1
It is 25 ~ 30 parts, the mass fraction of the sandwich of layers 2 is 60 ~ 82 parts.
Further, the mass parts ratio of the mass fraction Yu outer layer 1 of sandwich of layers 2 is 2.5 ~ 3.26.
A kind of preparation method of high, the anticorrosive strong zinc-aluminium medicine core solder of soldering strength, comprising the following steps:
1) it, calculates according to the mass fraction, weighs 25 ~ 30 parts of outer layer 1Al, 60 ~ 82 parts of sandwich of layers 2Zn98Al, by load weighted aluminium
Melting is cast into the aluminium ingot casting containing centre bore；
2), Zn98Al alloy melting load weighted in step 1) is cast to the centre bore of the aluminium ingot casting in step 1) at molten metal
It is interior, it squeezed after ingot casting is cooling, be rolled into the metal skin with three-layer sandwich；
3), AlF is weighed by mass fraction343 parts, 57 parts of RbF, are configured to brazing flux inner core 4, spare；
4), by mass fraction weigh 85 ~ 90 parts of external metallization skin obtained in step 2, it is rapid 3) in brazing flux inner core obtained 410 ~
15 parts, external metallization suitcase is taken to cover brazing flux inner core 4, zinc-aluminium medicine core solder is formed by rolling, drawing.
Further, the Zn98Al alloying metal liquid of melting in the volume and step 2 of the centre bore of ingot casting in step 1)
Volume is identical.
Embodiment 2
A kind of soldering strength is high, anticorrosive strong zinc-aluminium medicine core solder, which includes brazing flux inner core and be coated on brazing flux
The mass percent of external metallization skin outside inner core, brazing flux inner core and external metallization skin is respectively as follows: external metallization skin 90%, brazing flux
Inner core 10%, wherein brazing flux inner core is by AlF3It is formulated with RbF binary eutectic, AlF3It is respectively as follows: with the mass percent of RbF
AlF3 43%,RbF 57%；External metallization skin is three-layer sandwich metal skin, which includes outer layer and sandwich of layers,
The outer layer is Al, and the sandwich of layers is Zn98Al, to make Al mass percent 25% in external metallization skin, then Zn98Al layers
It is 3.26 with pure Al layers of mass ratio.
A kind of preparation method of high, the anticorrosive strong zinc-aluminium medicine core solder of soldering strength, comprising the following steps:
1), weigh pure Al and Zn98Al alloy by mass percentage, first by weighed fine aluminium block melting, be cast into containing centre bore
Aluminium ingot casting；
2), Zn98Al alloy melting load weighted in step 1) is cast to the centre bore of the aluminium ingot casting in step 1) at molten metal
It is interior, it squeezed after ingot casting is cooling, be rolled into the metal skin with three-layer sandwich；
3) AlF, is weighed by mass percentage343%, RbF 57% is configured to brazing flux inner core, spare；
4), weigh by mass percentage external metallization skin 90% obtained in step 2, it is rapid 3) in brazing flux inner core 10% obtained, take
External metallization suitcase covers brazing flux inner core, forms zinc-aluminium medicine core solder by rolling, drawing.
Further, the Zn98Al alloying metal liquid of melting in the volume and step 2 of the centre bore of ingot casting in step 1)
Volume is identical.
Embodiment 3
A kind of soldering strength is high, anticorrosive strong zinc-aluminium medicine core solder, which includes brazing flux inner core and be coated on brazing flux
The mass percent of external metallization skin outside inner core, brazing flux inner core and external metallization skin is respectively as follows: external metallization skin 89%, brazing flux
Inner core 11%, wherein brazing flux inner core is by AlF3It being formulated with RbF binary eutectic, external metallization skin is three-layer sandwich metal skin,
The three-layer sandwich metal skin includes outer layer and sandwich of layers, and the outer layer is Al, and the sandwich of layers is Zn98Al, to make external metallization
It is 3 that Al mass percent, which is 26.5%, then Zn98Al layers and pure Al layers of mass ratio, in skin.
The preparation method of zinc-aluminium medicine core solder of the present invention is the same as embodiment 2.
Embodiment 4
A kind of soldering strength is high, anticorrosive strong zinc-aluminium medicine core solder, which includes brazing flux inner core and be coated on brazing flux
The mass percent of external metallization skin outside inner core, brazing flux inner core and external metallization skin is respectively as follows: external metallization skin 88%, brazing flux
Inner core 12%, wherein brazing flux inner core is by AlF3It being formulated with RbF binary eutectic, external metallization skin is three-layer sandwich metal skin,
The three-layer sandwich metal skin includes outer layer and sandwich of layers, and the outer layer is Al, and the sandwich of layers is Zn98Al, to make external metallization
It is 2.8 that Al mass percent, which is 27.8%, then Zn98Al layers and pure Al layers of mass ratio, in skin.
The preparation method of zinc-aluminium medicine core solder of the present invention is the same as embodiment 2.
Embodiment 5
A kind of soldering strength is high, anticorrosive strong zinc-aluminium medicine core solder, which includes brazing flux inner core and be coated on brazing flux
The mass percent of external metallization skin outside inner core, brazing flux inner core and external metallization skin is respectively as follows: external metallization skin 87%, brazing flux
Inner core 13%, wherein brazing flux inner core is by AlF3It being formulated with RbF binary eutectic, external metallization skin is three-layer sandwich metal skin,
The three-layer sandwich metal skin includes outer layer and sandwich of layers, and the outer layer is Al, and the sandwich of layers is Zn98Al, to make external metallization
It is 2.7 that Al mass percent, which is 28.5%, then Zn98Al layers and pure Al layers of mass ratio, in skin.
The preparation method of zinc-aluminium medicine core solder of the present invention is the same as embodiment 2.
Embodiment 6
A kind of soldering strength is high, anticorrosive strong zinc-aluminium medicine core solder, which includes brazing flux inner core and be coated on brazing flux
The mass percent of external metallization skin outside inner core, brazing flux inner core and external metallization skin is respectively as follows: external metallization skin 86%, brazing flux
Inner core 14%, wherein brazing flux inner core is by AlF3It being formulated with RbF binary eutectic, external metallization skin is three-layer sandwich metal skin,
The three-layer sandwich metal skin includes outer layer and sandwich of layers, and the outer layer is Al, and the sandwich of layers is Zn98Al, to make external metallization
It is 2.6 that Al mass percent, which is 29.2%, then Zn98Al layers and pure Al layers of mass ratio, in skin.
The preparation method of zinc-aluminium medicine core solder of the present invention is the same as embodiment 2.
Embodiment 7
A kind of soldering strength is high, anticorrosive strong zinc-aluminium medicine core solder, which includes brazing flux inner core and be coated on brazing flux
The mass percent of external metallization skin outside inner core, brazing flux inner core and external metallization skin is respectively as follows: external metallization skin 86%, brazing flux
Inner core 14%, wherein brazing flux inner core is by AlF3It being formulated with RbF binary eutectic, external metallization skin is three-layer sandwich metal skin,
The three-layer sandwich metal skin includes outer layer and sandwich of layers, and the outer layer is Al, and the sandwich of layers is Zn98Al, to make external metallization
It is 2.5 that Al mass percent, which is 30%, then Zn98Al layers and pure Al layers of mass ratio, in skin.
The preparation method of zinc-aluminium medicine core solder of the present invention is the same as embodiment 2.
The advantage of the invention is that it is pure for preparing outer layer using the good pure Al and Zn98Al alloy of processing performance as raw material
Al, the composite metal belt that sandwich of layers is Zn98Al coat brazing flux powder and form zinc-aluminium medicine core solder, overcome traditional zinc-aluminium medicine core pricker
Al content is high in material, problem of poor in processability；Al content improves in zinc-aluminum brazing filler metal, and copper aluminium brazed seam brittlement phase is reduced, strength of joint
It significantly improves；Al content is increased to 30% in zinc-aluminum brazing filler metal, and zinc-aluminum brazing filler metal fusion temperature is about 500 DEG C~510 DEG C, and phase therewith
The AlF matched3Fusion temperature with RbF binary eutectic brazing flux is about 486 DEG C or so, and flux activity temperature is higher than fusion temperature 20
~30 DEG C, then active temperature is about 506~516 DEG C, and the two matching is good, solder brazing performance is good；In addition, pure Al corrosion resistance
Better than ZnAl alloy, solder metal skin of the present invention resists core brazing flux and the corrosive nature of ambiance is preferable, thus delay or
Inhibit the generation of solder " embrittlement " phenomenon.
When a kind of soldering strength of the present invention is high, anticorrosive strong zinc-aluminium medicine core solder is used for copper aluminium soldering, have
The features such as brazing property is good, Joint intensity is high, joint quality is good；When for gas brazing copper aluminum dissimilar metal, there is operation side
Just, the characteristics of strong applicability；In addition, solder of the present invention compared with existing zinc-aluminium medicine core solder, has excellent resistance environment gas
Atmosphere influences and the ability of brazing flux corrosion, solves the problems, such as that solder storage period is short, brazing property is corruptible.
It should also be noted that, herein, the relational terms such as I, II, III are used merely to an entity or behaviour
Make with another entity or operate distinguish, without necessarily requiring or implying between these entities or operation there are it is any this
The actual relationship of kind or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to nonexcludability
Include so that include a series of elements process, method, article or equipment not only include those elements, but also
Including other elements that are not explicitly listed, or further include for this process, method, article or equipment intrinsic want
Element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that including described want
There is also other identical elements in the process, method, article or equipment of element.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Claims (4)
1. a kind of soldering strength height, anticorrosive strong zinc-aluminium medicine core solder, the medicine core solder include brazing flux inner core and are coated on pricker
External metallization skin outside agent inner core, it is characterised in that: the mass fraction of brazing flux inner core and external metallization skin is respectively as follows: external metallization
85 ~ 90 parts of skin, 10 ~ 15 parts of brazing flux inner core, wherein brazing flux inner core is by AlF3It is formulated with RbF binary eutectic, AlF3With RbF's
Mass fraction is respectively as follows: AlF3 43 parts, 57 parts of RbF；External metallization skin is three-layer sandwich metal skin, the three-layer sandwich metal skin
Including outer layer and sandwich of layers, the outer layer is Al, and the sandwich of layers is Zn98Al, and the mass fraction of the outer layer is 25 ~ 30 parts,
The mass fraction of the sandwich of layers is 60 ~ 82 parts.
2. a kind of soldering strength height according to claim 1, anticorrosive strong zinc-aluminium medicine core solder, it is characterised in that: folder
The mass fraction of central layer and the mass parts ratio of outer layer are 2.5 ~ 3.26.
3. a kind of preparation method of high, the anticorrosive strong zinc-aluminium medicine core solder of soldering strength according to claim 1, special
Sign is: the following steps are included:
1) it, calculates according to the mass fraction, weighs 25 ~ 30 parts of outer layer Al, 60 ~ 82 parts of sandwich of layers Zn98Al, load weighted aluminium is melted
It refines, be cast into the aluminium ingot casting containing centre bore；
2), Zn98Al alloy melting load weighted in step 1) is cast to the centre bore of the aluminium ingot casting in step 1) at molten metal
It is interior, it squeezed after ingot casting is cooling, be rolled into the metal skin with three-layer sandwich；
3), AlF is weighed by mass fraction343 parts, 57 parts of RbF, are configured to brazing flux inner core, spare；
4) 85 ~ 90 parts of external metallization skin obtained in step 2, is weighed by mass fraction, brazing flux inner core 10 obtained in step 3)
~ 15 parts, external metallization suitcase is taken to cover brazing flux inner core, zinc-aluminium medicine core solder is formed by rolling, drawing.
4. a kind of preparation method of high, the anticorrosive strong zinc-aluminium medicine core solder of soldering strength according to claim 1, special
Sign is: in step 1) in the volume with step 2 of the centre bore of aluminium ingot casting the Zn98Al alloying metal liquid of melting volume phase
Together.
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| CN201811526929.2A CN109465564A (en) | 2018-12-13 | 2018-12-13 | The zinc-aluminium medicine core solder that a kind of soldering strength is high, corrosion resistance is strong |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112621010A (en) * | 2020-12-25 | 2021-04-09 | 中机智能装备创新研究院(宁波)有限公司 | Flux-cored zinc-aluminum brazing filler metal and preparation method thereof |
| CN113579555A (en) * | 2021-06-30 | 2021-11-02 | 郑州机械研究所有限公司 | Zinc-aluminum flux-cored brazing filler metal for copper-aluminum brazing and preparation method thereof |
| CN113953710A (en) * | 2021-11-30 | 2022-01-21 | 郑州机械研究所有限公司 | Aluminum-based brazing filler metal, flux-cored aluminum-based brazing filler metal and preparation method thereof |
| CN114193019A (en) * | 2021-12-28 | 2022-03-18 | 郑州机械研究所有限公司 | Composite brazing filler metal and preparation method thereof |
| CN114918573A (en) * | 2022-05-19 | 2022-08-19 | 郑州机械研究所有限公司 | Zinc-aluminum coating brazing filler metal ring, preparation method thereof and preparation device of coating brazing filler metal ring |
| WO2023045083A1 (en) * | 2021-09-23 | 2023-03-30 | 郑州机械研究所有限公司 | Method for flux-free soldering of aluminum alloy, and solder paste |
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| CN113579555A (en) * | 2021-06-30 | 2021-11-02 | 郑州机械研究所有限公司 | Zinc-aluminum flux-cored brazing filler metal for copper-aluminum brazing and preparation method thereof |
| CN113579555B (en) * | 2021-06-30 | 2024-08-13 | 郑州机械研究所有限公司 | Zinc-aluminum flux-cored solder for copper-aluminum brazing and preparation method thereof |
| WO2023045083A1 (en) * | 2021-09-23 | 2023-03-30 | 郑州机械研究所有限公司 | Method for flux-free soldering of aluminum alloy, and solder paste |
| CN113953710A (en) * | 2021-11-30 | 2022-01-21 | 郑州机械研究所有限公司 | Aluminum-based brazing filler metal, flux-cored aluminum-based brazing filler metal and preparation method thereof |
| CN113953710B (en) * | 2021-11-30 | 2023-06-09 | 郑州机械研究所有限公司 | Aluminum-based brazing filler metal, flux-cored aluminum-based brazing filler metal and preparation method of flux-cored aluminum-based brazing filler metal |
| CN114193019A (en) * | 2021-12-28 | 2022-03-18 | 郑州机械研究所有限公司 | Composite brazing filler metal and preparation method thereof |
| CN114918573A (en) * | 2022-05-19 | 2022-08-19 | 郑州机械研究所有限公司 | Zinc-aluminum coating brazing filler metal ring, preparation method thereof and preparation device of coating brazing filler metal ring |
| CN114918573B (en) * | 2022-05-19 | 2023-09-26 | 郑州机械研究所有限公司 | Zinc-aluminum coating brazing filler metal ring and preparation method thereof |
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