CN105108378B - Flux-cored welding bar for preventing soldering flux from loss - Google Patents
Flux-cored welding bar for preventing soldering flux from loss Download PDFInfo
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- CN105108378B CN105108378B CN201510565379.5A CN201510565379A CN105108378B CN 105108378 B CN105108378 B CN 105108378B CN 201510565379 A CN201510565379 A CN 201510565379A CN 105108378 B CN105108378 B CN 105108378B
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- Prior art keywords
- flux
- brazing
- medicated core
- soldering
- core
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- 230000004907 flux Effects 0.000 title claims abstract description 98
- 238000003466 welding Methods 0.000 title claims abstract description 19
- 238000005476 soldering Methods 0.000 title abstract description 34
- 239000000843 powder Substances 0.000 claims abstract description 74
- 229910052751 metal Inorganic materials 0.000 claims abstract description 30
- 239000002184 metal Substances 0.000 claims abstract description 30
- 239000000203 mixture Substances 0.000 claims abstract description 25
- 229910011255 B2O3 Inorganic materials 0.000 claims abstract description 15
- 229910020261 KBF4 Inorganic materials 0.000 claims abstract description 15
- 229910004835 Na2B4O7 Inorganic materials 0.000 claims abstract description 15
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910020836 Sn-Ag Inorganic materials 0.000 claims abstract description 5
- 229910020888 Sn-Cu Inorganic materials 0.000 claims abstract description 5
- 229910020988 Sn—Ag Inorganic materials 0.000 claims abstract description 5
- 229910019204 Sn—Cu Inorganic materials 0.000 claims abstract description 5
- 229910020994 Sn-Zn Inorganic materials 0.000 claims abstract description 4
- 229910009069 Sn—Zn Inorganic materials 0.000 claims abstract description 4
- 238000005219 brazing Methods 0.000 claims description 153
- 239000000945 filler Substances 0.000 claims description 34
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 34
- 229910052709 silver Inorganic materials 0.000 claims description 16
- 239000003814 drug Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000011812 mixed powder Substances 0.000 claims description 2
- 229910052759 nickel Inorganic materials 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 229910000679 solder Inorganic materials 0.000 abstract description 82
- 238000000034 method Methods 0.000 abstract description 15
- 229910045601 alloy Inorganic materials 0.000 abstract description 9
- 239000000956 alloy Substances 0.000 abstract description 9
- 238000002844 melting Methods 0.000 abstract description 6
- 230000008018 melting Effects 0.000 abstract description 6
- 239000000155 melt Substances 0.000 abstract 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000012805 post-processing Methods 0.000 abstract 1
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Inorganic materials [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 abstract 1
- 239000011162 core material Substances 0.000 description 111
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 14
- 239000004332 silver Substances 0.000 description 14
- 239000000463 material Substances 0.000 description 12
- 238000002360 preparation method Methods 0.000 description 12
- 238000003892 spreading Methods 0.000 description 12
- 238000009736 wetting Methods 0.000 description 12
- 229910000906 Bronze Inorganic materials 0.000 description 3
- 239000010974 bronze Substances 0.000 description 3
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 229910000743 fusible alloy Inorganic materials 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3006—Ag 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
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/302—Cu 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
- B23K35/22—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
- B23K35/3602—Carbonates, basic oxides or hydroxides
-
- 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
Abstract
The invention discloses a flux-cored welding bar for preventing soldering flux from loss, which comprises a solder alloy outer skin and a flux core arranged inside the solder alloy outer skin, wherein the flux core is constituted of 80 to 90 percent of soldering flux and 10 to 20 percent of low melting point metal powder; the soldering flux comprises the mixture of Na2B4O7, B2O3, KBF4, NaF and KF; and the low melting point metal powder comprises at least one of Sn-Cu, Sn-Ag and Sn-Zn alloy powders. According to the invention, the flux core is added with the low melting point alloy powder; when the flux core is heated, the low melting point alloy powder will be firstly molten, thus the low melting point alloy powder has the function of sticking surrounding soldering flux fine powders; the soldering flux inside the flux core is prevented from flowing slowly after being molten, thus reducing the loss of the soldering flux and saving cost; at the same time, soldering flux residuals left on the surface of a weld part are decreased, thus the post-processing procedures are reduced; due to the sticking function of alloy liquid, a head part of the flux-cored welding bar is prevented from the phenomenon of hollow core, thus the usage rate of the flux-cored welding bar reaches 100 percent; and in the soldering process, the melt temperature of the alloy powder inside the flux core is relatively low, thus the melt temperature of the whole soldering flux is lowered; and the flowing spreadability is increased.
Description
Technical field
The present invention relates to silver-based and cuprio series flux-cored electrode, more particularly, to a kind of flux-cored electrode for preventing brazing flux to be lost in
。
Background technology
Silver-based or cuprio series flux-cored electrode are widely used in the industry tubular configured joint such as Aero-Space, automobile, machinery, household electrical appliances
Soldering connection.Silver-based or cuprio series flux-cored electrode are during heating use, and the heat conductivility of brazing filler metal alloy crust is preferable,
And the fusion temperature of medicated core brazing flux is less than brazing filler metal alloy, the brazing flux viscosity after fusing is relatively low, and the brazing fluxes of a large amount of fusings will be along
The inwall of tubular solder alloy crust is flowed down, and makes flux-cored electrode inside " hollow " phenomenon occur.Due to a large amount of streams of medicated core brazing flux
Lose, head forms the flux-cored electrode of " hollow " state and can not use, and causes raw material to waste in a large number, and cross flow is to weldment surface pricker
A large amount of residuals of agent increased the workload of subsequent treatment again.
The content of the invention
It is an object of the invention to provide a kind of medicated core viscosity is big, can prevent the flux-cored electrode that brazing flux is lost in.
For achieving the above object, the present invention can take following technical proposals：
The flux-cored electrode for preventing brazing flux to be lost in of the present invention, including brazing filler metal alloy crust and be filled in the solder and close
The medicated core of the outer Intradermal of gold, the medicated core is made up of 80 ~ 90% brazing flux and 10 ~ 20% low-melting-point metal powder.
The brazing flux includes 20%~30% Na2B4O7, 30%~40% B2O3, 20%~30% KBF4, 0%~10%
The KF of NaF and 0%~10%；The low-melting-point metal powder is included in Sn-Cu alloyed powders, Sn-Ag alloyed powders and Sn-Zn alloyed powders
One or more mixed powders.
Cu contents account for Ag contents in 0.1%~20%, Sn-Ag alloyed powders and account for 0.1%~50%, Sn- in the Sn-Cu alloyed powders
Zn contents account for 0.1%~98% in Zn alloyed powders.
The weight of the medicated core is the 10 ~ 20% of flux-cored electrode gross weight.
The brazing filler metal alloy crust be by 0%~50% Ag, 25%~60% Cu, 20%~43% Zn, 0%~5% Sn,
0%~10% Ni and 0%~5% Mn are elementary composition；The thickness of brazing filler metal alloy crust is generally 0.1~1.5mm.
It is an advantage of the current invention that low-melting alloy powder is with the addition of in medicated core, because the fusing point of alloyed powder is less than brazing flux, when
Can first melt when it is heated, the viscosity of aluminium alloy is higher after melting, brazing flux fine powder around adhesion can be played a part of, prevent medicine
Cross flow after brazing flux fusing in core, reduces the loss of brazing flux, has saved cost；Simultaneously the less brazing flux in weldment surface is remained
Reduce follow-up treatment process.Due to the adhesive attraction of aluminium alloy, it is to avoid hollow phenomenon, welding rod occurs in flux-cored electrode head
Can be all of the utilization rate for making flux-cored electrode has reached 100%.During welding, due to the alloyed powder fusion temperature in medicated core compared with
It is low, reduce the overall fusion temperature of solder so as to which the spreadability that flows is enhanced.
Specific embodiment
More detailed explanation is done to the present invention below by specific embodiment.
Embodiment 1
In flux-cored electrode of the present invention, brazing filler metal alloy crust is 90% with the percentage by weight of medicated core:10%, brazing filler metal alloy crust
For BAg18CuZnSn (Ag-Cu46-Zn34-Sn2), brazing flux and the percentage by weight of metal powder are 90% in medicated core:10%, brazing flux
By 30% Na2B4O7, 40% B2O3, 22% KBF4With 8% NaF composition, metal powder by 50% Sn-Cu10 alloyed powders and
50% Sn-Ag5 alloyed powders composition.
The above-mentioned brazing flux for preparing is ground to into the mesh of granularity 200 initially with planetary ball mill, the conjunction of 60 mesh is subsequently adding
Bronze mix homogeneously obtains medicated core material, and brazing filler metal alloy crust and medicated core are made the finished medicines of diameter of phi 2.0 according to normal process steps
Core silver solder.
Using the medicated core silver solder and the common medicated core silver solder using identical brazing flux and brazing filler metal alloy crust of above-mentioned preparation
Simultaneously soldering contrast test is carried out to 304 corrosion resistant plates of thickness 2mm.Medicated core silver solder prepared by the present invention shows good
Mobility, soldered fitting outward appearance is good, and comparing result shows：1. medicated core silver solder of the present invention does not occur in use
" hollow " phenomenon, the utilization rate of welding rod reaches 100%, and " hollow " phenomenon then occurs in common medicated core silver solder, head " hollow "
Because using without brazing flux, the utilization rate of brazing material only has about 92% to solder；2. the brazing member table of medicated core silver solder of the present invention
Face brazing flux residual is less, and the brazing member surface brazing flux residual of common medicated core silver solder is more；3. medicated core silver solder of the present invention
Wetting and spreading area more common medicated core silver solder is big by about 12%.
Embodiment 2
In flux-cored electrode of the present invention, brazing filler metal alloy crust is 90% with the percentage by weight of medicated core:10%, brazing filler metal alloy crust
For BAg40CuZnSnNi (Ag-Cu25-Zn31-Sn3-Ni1), brazing flux and the percentage by weight of metal powder are 90% in medicated core:
10%, brazing flux by 30% Na2B4O7, 40% B2O3, 22% KBF4NaF compositions with 8%, metal powder is Sn-Cu5 alloyed powders.
Preparation method is with embodiment 1.
Soldering contrast test is carried out by the method for embodiment 1, comparing result shows：1. medicated core silver solder of the present invention was being used
Without there is " hollow " phenomenon in journey, the utilization rate of welding rod reaches 100%, and " hollow " phenomenon then occurs in common medicated core silver solder,
Because using without brazing flux, the utilization rate of brazing material only has about 94% to the solder of head " hollow "；2. medicated core silver soldering of the present invention
The brazing member surface brazing flux residual of bar is less, and the brazing member surface brazing flux residual of common medicated core silver solder is more；3. it is of the invention
The more common medicated core silver solder of wetting and spreading area of medicated core silver solder is big by about 15%.
Embodiment 3
In flux-cored electrode of the present invention, brazing filler metal alloy crust is 90% with the percentage by weight of medicated core:10%, brazing filler metal alloy crust
For BAg20CuZnMn (Ag-Cu40-Zn35-Mn5), brazing flux and the percentage by weight of metal powder are 90% in medicated core:10%, brazing flux
By 30% Na2B4O7, 40% B2O3, 22% KBF4With 8% NaF composition, metal powder by 40% Sn-Cu15 alloyed powders and
60% Sn-Zn10 alloyed powders composition.
Preparation method is with embodiment 1.
Soldering contrast test is carried out by the method for embodiment 1, comparing result shows：1. medicated core silver solder of the present invention was being used
Without there is " hollow " phenomenon in journey, the utilization rate of welding rod reaches 100%, and " hollow " phenomenon then occurs in common medicated core silver solder,
Because using without brazing flux, the utilization rate of brazing material only has about 96% to the solder of head " hollow "；2. medicated core silver soldering of the present invention
The brazing member surface brazing flux residual of bar is less, and the brazing member surface brazing flux residual of common medicated core silver solder is more；3. it is of the invention
The more common medicated core silver solder of wetting and spreading area of medicated core silver solder is big by about 13%.
Embodiment 4
In flux-cored electrode of the present invention, brazing filler metal alloy crust is 88% with the percentage by weight of medicated core:12%, brazing filler metal alloy crust
For BAg18CuZnSn (Ag-Cu46-Zn34-Sn2), brazing flux and the percentage by weight of metal powder are 85% in medicated core:15%, brazing flux
By 30% Na2B4O7, 40% B2O3, 22% KBF4KF compositions with 8%, metal powder by 30% Sn-Cu5 alloyed powders, 40%
Sn-Ag10 alloyed powders and 30% Sn-Zn10 alloyed powders.
Preparation method is with embodiment 1.
Soldering contrast test is carried out by the method for embodiment 1, comparing result shows：1. medicated core silver solder of the present invention was being used
Without there is " hollow " phenomenon in journey, the utilization rate of welding rod reaches 100%, and " hollow " phenomenon then occurs in common medicated core silver solder,
Because using without brazing flux, the utilization rate of brazing material only has about 91% to the solder of head " hollow "；2. medicated core silver soldering of the present invention
The brazing member surface brazing flux residual of bar is less, and the brazing member surface brazing flux residual of common medicated core silver solder is more；3. it is of the invention
The more common medicated core silver solder of wetting and spreading area of medicated core silver solder is big by about 11%.
Embodiment 5
In flux-cored electrode of the present invention, brazing filler metal alloy crust is 88% with the percentage by weight of medicated core:12%, brazing filler metal alloy crust
For BAg40CuZnSnNi (Ag-Cu25-Zn31-Sn3-Ni1), brazing flux and the percentage by weight of metal powder are 85% in medicated core:
15%, brazing flux by 30% Na2B4O7, 40% B2O3, 22% KBF4KF compositions with 8%, metal powder is closed by 40% Sn-Ag10
Bronze and 60% Sn-Zn10 alloyed powders composition.
Preparation method is with embodiment 1.
Soldering contrast test is carried out by the method for embodiment 1, comparing result shows：1. medicated core silver solder of the present invention was being used
Without there is " hollow " phenomenon in journey, the utilization rate of welding rod reaches 100%, and " hollow " phenomenon then occurs in common medicated core silver solder,
Because using without brazing flux, the utilization rate of brazing material only has about 94% to the solder of head " hollow "；2. medicated core silver soldering of the present invention
The brazing member surface brazing flux residual of bar is less, and the brazing member surface brazing flux residual of common medicated core silver solder is more；3. it is of the invention
The more common medicated core silver solder of wetting and spreading area of medicated core silver solder is big by about 10%.
Embodiment 6
In flux-cored electrode of the present invention, brazing filler metal alloy crust is 88% with the percentage by weight of medicated core:12%, brazing filler metal alloy crust
For BAg20CuZnMn (Ag-Cu40-Zn35-Mn5), brazing flux and the percentage by weight of metal powder are 85% in medicated core:15%, brazing flux
By 30% Na2B4O7, 40% B2O3, 22% KBF4With 8% NaF composition, metal powder by 50% Sn-Ag15 alloyed powders and
50% Sn-Cu5 alloyed powders composition.
Preparation method is with embodiment 1.
Soldering contrast test is carried out by the method for embodiment 1, comparing result shows：1. medicated core silver solder of the present invention was being used
Without there is " hollow " phenomenon in journey, the utilization rate of welding rod reaches 100%, and " hollow " phenomenon then occurs in common medicated core silver solder,
Because using without brazing flux, the utilization rate of brazing material only has about 92% to the solder of head " hollow "；2. medicated core silver soldering of the present invention
The brazing member surface brazing flux residual of bar is less, and the brazing member surface brazing flux residual of common medicated core silver solder is more；3. it is of the invention
The more common medicated core silver solder of wetting and spreading area of medicated core silver solder is big by about 13%.
Embodiment 7
In flux-cored electrode of the present invention, brazing filler metal alloy crust is 88% with the percentage by weight of medicated core:12%, brazing filler metal alloy crust
For BAg18CuZnSn (Ag-Cu46-Zn34-Sn2), brazing flux and the percentage by weight of metal powder are 85% in medicated core:15%, brazing flux
By 30% Na2B4O7, 40% B2O3, 22% KBF4KF compositions with 8%, metal powder is Sn-Ag10 alloyed powders.
Preparation method is with embodiment 1.
Soldering contrast test is carried out by the method for embodiment 1, comparing result shows：1. medicated core silver solder of the present invention was being used
Without there is " hollow " phenomenon in journey, the utilization rate of welding rod reaches 100%, and " hollow " phenomenon then occurs in common medicated core silver solder,
Because using without brazing flux, the utilization rate of brazing material only has about 91% to the solder of head " hollow "；2. medicated core silver soldering of the present invention
The brazing member surface brazing flux residual of bar is less, and the brazing member surface brazing flux residual of common medicated core silver solder is more；3. it is of the invention
The more common medicated core silver solder of wetting and spreading area of medicated core silver solder is big by about 14%.
Embodiment 8
In flux-cored electrode of the present invention, brazing filler metal alloy crust is 88% with the percentage by weight of medicated core:12%, brazing filler metal alloy crust
For BAg40CuZnSnNi (Ag-Cu25-Zn31-Sn3-Ni1), brazing flux and the percentage by weight of metal powder are 85% in medicated core:
15%, brazing flux by 30% Na2B4O7, 40% B2O3, 22% KBF4KF compositions with 8%, metal powder is closed by 30% Sn-Ag10
Bronze, 40% Sn-Cu5 alloyed powders and 30% Sn-Zn5 alloyed powders composition.
Preparation method is with embodiment 1.
Soldering contrast test is carried out by the method for embodiment 1, comparing result shows：1. medicated core silver solder of the present invention was being used
Without there is " hollow " phenomenon in journey, the utilization rate of welding rod reaches 100%, and " hollow " phenomenon then occurs in common medicated core silver solder,
Because using without brazing flux, the utilization rate of brazing material only has about 92% to the solder of head " hollow "；2. medicated core silver soldering of the present invention
The brazing member surface brazing flux residual of bar is less, and the brazing member surface brazing flux residual of common medicated core silver solder is more；3. it is of the invention
The more common medicated core silver solder of wetting and spreading area of medicated core silver solder is big by about 15%.
Embodiment 9
In flux-cored electrode of the present invention, brazing filler metal alloy crust is 88% with the percentage by weight of medicated core:12%, brazing filler metal alloy crust
For BAg20CuZnMn (Ag-Cu40-Zn35-Mn5), brazing flux and the percentage by weight of metal powder are 85% in medicated core:15%, brazing flux
By 30% Na2B4O7, 40% B2O3, 22% KBF4With 8% KF composition, metal powder by 50% Sn-Ag10 alloyed powders and 50%
Sn-Cu15 alloyed powders composition.
Preparation method is with embodiment 1.
Soldering contrast test is carried out by the method for embodiment 1, comparing result shows：1. medicated core silver solder of the present invention was being used
Without there is " hollow " phenomenon in journey, the utilization rate of welding rod reaches 100%, and " hollow " phenomenon then occurs in common medicated core silver solder,
Because using without brazing flux, the utilization rate of brazing material only has about 93% to the solder of head " hollow "；2. medicated core silver soldering of the present invention
The brazing member surface brazing flux residual of bar is less, and the brazing member surface brazing flux residual of common medicated core silver solder is more；3. it is of the invention
The more common medicated core silver solder of wetting and spreading area of medicated core silver solder is big by about 15%.
Embodiment 10
In flux-cored electrode of the present invention, brazing filler metal alloy crust is 88% with the percentage by weight of medicated core:12%, brazing filler metal alloy crust
For BAg18CuZnSn (Ag-Cu46-Zn34-Sn2), brazing flux and the percentage by weight of metal powder are 85% in medicated core:15%, brazing flux
By 30% Na2B4O7, 40% B2O3, 22% KBF4With 8% KF composition, metal powder by 20% the alloyed powders of Sn- Zn 10 and
80% Sn-Ag5 alloyed powders composition.
Preparation method is with embodiment 1.
Soldering contrast test is carried out by the method for embodiment 1, comparing result shows：1. medicated core silver solder of the present invention was being used
Without there is " hollow " phenomenon in journey, the utilization rate of welding rod reaches 100%, and " hollow " phenomenon then occurs in common medicated core silver solder,
Because using without brazing flux, the utilization rate of brazing material only has about 92% to the solder of head " hollow "；2. medicated core silver soldering of the present invention
The brazing member surface brazing flux residual of bar is less, and the brazing member surface brazing flux residual of common medicated core silver solder is more；3. it is of the invention
The more common medicated core silver solder of wetting and spreading area of medicated core silver solder is big by about 13%.
Embodiment 11
In flux-cored electrode of the present invention, brazing filler metal alloy crust is 88% with the percentage by weight of medicated core:12%, brazing filler metal alloy crust
For BAg40CuZnSnNi (Ag-Cu25-Zn31-Sn3-Ni1), brazing flux and the percentage by weight of metal powder are 85% in medicated core:
15%, brazing flux by 30% Na2B4O7, 40% B2O3, 22% KBF4With 8% KF composition, metal powder by 30% Sn- Zn 10
Alloyed powder and 70% Sn-Cu5 alloyed powders composition.
Preparation method is with embodiment 1.
Soldering contrast test is carried out by the method for embodiment 1, comparing result shows：1. medicated core silver solder of the present invention was being used
Without there is " hollow " phenomenon in journey, the utilization rate of welding rod reaches 100%, and " hollow " phenomenon then occurs in common medicated core silver solder,
Because using without brazing flux, the utilization rate of brazing material only has about 93% to the solder of head " hollow "；2. medicated core silver soldering of the present invention
The brazing member surface brazing flux residual of bar is less, and the brazing member surface brazing flux residual of common medicated core silver solder is more；3. it is of the invention
The more common medicated core silver solder of wetting and spreading area of medicated core silver solder is big by about 12%.
Embodiment 12
In flux-cored electrode of the present invention, brazing filler metal alloy crust is 88% with the percentage by weight of medicated core:12%, brazing filler metal alloy crust
For BAg20CuZnMn (Ag-Cu40-Zn35-Mn5), brazing flux and the percentage by weight of metal powder are 85% in medicated core:15%, brazing flux
By 30% Na2B4O7, 40% B2O3, 22% KBF4With 8% NaF composition, metal powder by 50% the alloyed powders of Sn- Zn 10 and
50% Sn-Ag5 alloyed powders composition.
Preparation method is with embodiment 1.
Soldering contrast test is carried out by the method for embodiment 1, comparing result shows：1. medicated core silver solder of the present invention was being used
Without there is " hollow " phenomenon in journey, the utilization rate of welding rod reaches 100%, and " hollow " phenomenon then occurs in common medicated core silver solder,
Because using without brazing flux, the utilization rate of brazing material only has about 94% to the solder of head " hollow "；2. medicated core silver soldering of the present invention
The brazing member surface brazing flux residual of bar is less, and the brazing member surface brazing flux residual of common medicated core silver solder is more；3. it is of the invention
The more common medicated core silver solder of wetting and spreading area of medicated core silver solder is big by about 11%.
Claims (4)
1. a kind of flux-cored electrode for preventing brazing flux to be lost in, including brazing filler metal alloy crust and the outer Intradermal of the brazing filler metal alloy is filled in
Medicated core, it is characterised in that：The medicated core is made up of 80 ~ 90% brazing flux and 10 ~ 20% low-melting-point metal powder；The brazing flux includes
20%~30% Na2B4O7, 30%~40% B2O3, 20%~30% KBF4, 0%~10% NaF and 0%~10% KF；It is described
Low-melting-point metal powder includes one or more mixed powders in Sn-Cu alloyed powders, Sn-Ag alloyed powders and Sn-Zn alloyed powders.
2. it is according to claim 1 prevent brazing flux be lost in flux-cored electrode, it is characterised in that：In the Sn-Cu alloyed powders
Cu contents account for Ag contents in 0.1%~20%, Sn-Ag alloyed powders account for Zn contents in 0.1%~50%, Sn-Zn alloyed powders account for 0.1%~
98%。
3. it is according to claim 1 prevent brazing flux be lost in flux-cored electrode, it is characterised in that：The weight of the medicated core is medicine
The 10 ~ 20% of core welding rod gross weight.
4. it is according to claim 1 prevent brazing flux be lost in flux-cored electrode, it is characterised in that：The brazing filler metal alloy crust is
Mn by 0%~50% Ag, 25%~60% Cu, 20%~43% Zn, 0%~5% Sn, 0%~10% Ni and 0%~5% is first
Element composition.
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| CN201510565379.5A CN105108378B (en) | 2015-09-08 | 2015-09-08 | Flux-cored welding bar for preventing soldering flux from loss |
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| CN201510565379.5A CN105108378B (en) | 2015-09-08 | 2015-09-08 | Flux-cored welding bar for preventing soldering flux from loss |
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| CN106216878A (en) * | 2016-08-16 | 2016-12-14 | 镇江市锶达合金材料有限公司 | A kind of cadmium-free silver brazing alloy |
| CN106346165B (en) * | 2016-08-30 | 2019-02-05 | 郑州机械研究所 | A kind of high tin silver solder and preparation method thereof |
| CN111344105B (en) * | 2017-12-19 | 2022-05-13 | 郑州机械研究所有限公司 | In-situ synthesis metal coating flux-cored silver solder and preparation method, welding method and connector thereof |
| CN110936065A (en) * | 2019-12-17 | 2020-03-31 | 浙江永旺焊材制造有限公司 | Novel flux-cored silver solder |
| CN110936064A (en) * | 2019-12-17 | 2020-03-31 | 中机智能装备创新研究院(宁波)有限公司 | Flux-cored silver brazing filler metal |
| CN112355514A (en) * | 2020-10-27 | 2021-02-12 | 郑州机械研究所有限公司 | Coated composite powder, preparation method thereof and flux-cored solder |
| CN112621015B (en) * | 2020-12-25 | 2022-07-26 | 中机智能装备创新研究院(宁波)有限公司 | Flux-cored aluminum brazing filler metal and preparation method thereof |
| CN113084390A (en) * | 2021-04-12 | 2021-07-09 | 郑州机械研究所有限公司 | Multilayer flux-cored silver solder and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH07276088A (en) * | 1994-04-04 | 1995-10-24 | Nippon Steel Corp | Mag welding flux cored wire for low temperature steel |
| CN102441747B (en) * | 2011-06-28 | 2012-12-26 | 力创(台山)电子科技有限公司 | Brazing flux for welding aluminum and aluminum alloy flux-cored wires |
| CN102581505A (en) * | 2012-03-27 | 2012-07-18 | 郑州机械研究所 | Seam particle filling composite welding rod applicable to large-gap brazing |
| CN103273211B (en) * | 2013-06-01 | 2015-06-10 | 北京工业大学 | Magnesium alloy flux-cored brazing wire and preparation method thereof |
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