CN105880872A - Brazing material and preparing method thereof - Google Patents
Brazing material and preparing method thereof Download PDFInfo
- Publication number
- CN105880872A CN105880872A CN201610390019.0A CN201610390019A CN105880872A CN 105880872 A CN105880872 A CN 105880872A CN 201610390019 A CN201610390019 A CN 201610390019A CN 105880872 A CN105880872 A CN 105880872A
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- brazing material
- weight portion
- metal alloy
- weight
- alloy powder
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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
- B23K35/22—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
- B23K35/3612—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 organic compounds as principal constituents
- B23K35/3613—Polymers, e.g. resins
-
- 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
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
Abstract
A brazing material comprises 80-90 parts by weight of metallic alloy powder and 10-20 parts by weight of a soldering paste, wherein the metallic alloy powder comprises the following materials: 1-20 parts by weight of Bi, 0.1-1 part by weight of Ag and 79-99 parts by weight of Sn; and the soldering paste consists of one or a plurality of rosin and a derivative thereof, tetraethoxysilane, a surfactant, an antioxidant and an inorganic filler. The brazing material can connect materials, such as metallic aluminum alloy composites, composite ceramic and glass, is lower in melting point as a lead-free brazing material in comparison with the existing brazing material, lowers brazing temperature, and at the same time, solves the technical problem that the class of materials are difficult to connect due to respective stable chemical properties.
Description
Technical field
The invention belongs to soldering field, be specifically related to a kind of brazing material and preparation method thereof.
Background technology
Soldering is to use metal material more low-melting than mother metal to make solder, by weldment and solder heat to higher than pricker
Material fusing point, less than mother metal fusion temperature, utilizes liquid solder moistening mother metal, fills play movement and mother metal
The method that phase counterdiffusion realizes connecting weldment.Brazing deformation is little, joint smooth and beautiful appearance, be suitable for welding accurate,
Component that is complicated and that be made up of different materials, such as honeycomb panel, turbine blade, carbide tool and print
Printed circuit board etc..
The soldering of the Inorganic Non-metallic Materials such as glass ceramics is different from the soldering between traditional metal materials, be due to
Glass and composite ceramics are mainly covalent bond structure, possess highly stable chemical component and stable chemical
Matter, is different from the activity of metal, therefore the connection of glass and ceramic material has suitable difficulty, existing skill
The solder technology of the glass ceramic material of art such as vacuum diffusion bonding etc., all have suitable technology difficulty with
Higher cost.
Summary of the invention
In order to overcome the defect of prior art, it is an object of the invention to provide a kind of brazing material, it can
Realize the connection of metal aluminum alloy composite/material such as composite ceramics and/or glass, as a kind of unleaded pricker
Wlding material is lower than existing brazing material fusing point, solves this kind of material due to certainly while reducing brazing temperature
Body stable chemical nature and be difficult to the technological difficulties connected.
As an aspect of of the present present invention, it is provided that a kind of brazing material, a kind of brazing material, including
The metal alloy powder of 80-90 weight portion and the weld-aiding cream of 10-20 weight portion；
Described metal alloy powder includes materials described below:
1-20 weight portion Bi, 0.1-1 weight portion Ag and 79-99 weight portion Sn；And
Described weld-aiding cream is by Colophonium and derivant, polyorganosiloxane resin, tetraethoxysilane, surface activity
One or more compositions in agent, antioxidant and inorganic filler.
Further, described Colophonium and derivant thereof are natural grease Colophonium, newtrex and part-polymerised rosin
In one or more.
Further, described polyorganosiloxane resin is polydimethylsiloxane and phenyl methyl siloxane homopolymer
One or both.
Further, the one or many during described surfactant is polyoxyethylene carboxylate and triethanolamine
Kind.
Further, one or more during described antioxidant is benzotriazole and phytic acid.
Further, during described inorganic filler is SiO2 and Al2O3 one or more.
Further, the purity of described Bi, Ag and Sn is 99.99%, described tetraethoxysilane pure
Degree is analytical pure.
According to a further aspect in the invention, a kind of method preparing above-mentioned brazing material, comprise the steps:
Step one, preparation Sn-Bi alloy intermediate
By weight part ratio (1.5-2): Sn Yu Bi of 1 is heated to 450 ± 10 DEG C, it is incubated 1.5h ± 0.5h,
Sn-Bi alloy intermediate is obtained after being sufficiently stirred for, standby；
Step 2, preparation Sn-Ag alloy intermediate
By weight part ratio (4-5): Sn Yu Ag of 1 is heated to 800 ± 10 DEG C, it is incubated 3h ± 0.5h, fills
Sn-Ag alloy intermediate is obtained after dividing stirring, standby；
Step 3, prepare metal alloy powder
Take weight ratio (0.41-120): the Sn-Bi alloy intermediate of 1 and Sn-Ag alloy intermediate, separately take
The pure Sn of 38.6-92.5 weight portion, puts into stainless-steel pan melting together, is heated to 500 ± 10 DEG C, protects
Temperature 2h ± 0.5h, it is thus achieved that metal alloy, utilizes atomising device that described metal alloy is made metal alloy powder；
Step 4, prepare brazing material
By weld-aiding cream 10-20 weight portion, by Colophonium and derivant thereof, tetraethoxy-silicane, surfactant,
One or more of antioxidant and inorganic filler are sequentially added into container heating, and temperature controls at 80 ± 10 DEG C
Degree, high speed dispersion 20 ± 5min after stirring to dissolving, it is cooled to room temperature, metal alloy step 3 prepared
Powder is added thereto and ball milling, obtains brazing material.
Further, described metal alloy is made metal alloy powder by the method using atomization in step 3.
Further, described atomization is centrifugal atomizing, aerosolization or sound atomization.
Further, ball milling speed described in step 4 is 200-400 rev/min.
Compared with prior art, the brazing material of the present invention is capable of metal aluminum alloy composite/composite ceramic
The connection of the material such as porcelain and/or glass, lower than existing brazing material fusing point as a kind of unleaded brazing material,
And the fusing point of existing brazing material is generally greater than the fusing point 217 DEG C of Sn-Pb eutectic.Therefore brazing temperature is reduced
While solve this kind of material and be difficult to, due to self stable chemical nature, the technological difficulties connected.
Accompanying drawing explanation
Fig. 1 is brazing temperature curve synoptic diagram.
Detailed description of the invention
By embodiment, one brazing material of the present invention and preparation method thereof will be described below.
Embodiment 1
Brazing material includes materials described below:
The metal alloy powder of 80 weight portions and the weld-aiding cream of 20 weight portions；
Wherein metal alloy powder is made up of materials described below: the bismuth metal Bi of 1 weight portion, the metal of 1 weight portion
Silver Ag and the metallic tin Sn of 98 weight portions；
The purity of above-mentioned bismuth metal is 99.99%；
The purity of above-mentioned argent is 99.99%；
The purity of above-mentioned metallic tin is 99.99%；
In weld-aiding cream, each material weight part is, newtrex 4.8 weight portion, polydimethylsiloxane 4.8 weight
Amount part, tetraethoxysilane 9.6 weight portion, triethanolamine 0.95 weight portion, phytic acid 0.48 weight
Amount part, SiO24.37 weight portion.
The method preparing brazing material:
Step one, preparation Sn-Bi alloy intermediate
Sn Yu Bi 2:1 by weight is weighed 2 weight portion Sn and 1 weight portion Bi, is then placed in intermediate frequency
Heating furnace is heated to 455 DEG C, is incubated 2.1h, after being sufficiently stirred for, obtains Sn-Bi alloy intermediate, standby；
Step 2, preparation Sn-Ag alloy intermediate
Sn Yu Ag 5:1 by weight is weighed 5 weight portion Sn and 1 weight portion Ag, is then placed in heating
Stove is heated to 805 DEG C, is incubated 3.1h, after being sufficiently stirred for, obtains Sn-Ag alloy intermediate, standby；
Step 3, prepare metal alloy powder
(wherein Sn accounts for 2 weight portions, and Bi accounts for 1 to take Sn-Bi alloy intermediate 3 weight portion in step one
Weight portion) and step 2 in Sn-Ag alloy intermediate 6 weight portion (wherein Sn accounts for 5 weight portions, Ag
Account for 1 weight portion), separately take 91 weight portion Sn, put into stainless-steel pan melting, be heated to 502 DEG C, insulation
2.2h, it is thus achieved that metal alloy, utilizes centrifugal atomization apparatus that metal alloy is made metal alloy powder.
Step 4, prepare brazing material
Take newtrex 4.8 weight portion, polydimethylsiloxane 4.8 weight portion, tetraethoxy-silicane 9.6 weight
Amount part, triethanolamine 0.95 weight portion, phytic acid 0.48 weight portion, SiO24.37 weight portion, depend on
Secondary addition container heats, and temperature controls at 81 DEG C, and after stirring to dissolving, high speed dispersion 23 minutes, is cooled to
Room temperature.Adding metal alloy powder ball milling, ball milling speed controls, at 200-400 rev/min, to obtain soldering material
Material.
The brazing material performance parameter obtained is as shown in table 1:
Table 1
| Performance indications | Parameter |
| Density (g/cm3) | 8.17-8.20 |
| Fusing point (DEG C) | 170-180 |
| Heat conductivity (W/M K) | 56-60 |
| Hot strength (MPa) | 27 |
Embodiment 2
Brazing material includes materials described below:
Metal alloy powder 90 weight portion, weld-aiding cream 10 weight portion；
Wherein metal alloy powder is made up of materials described below: the Bi of 20 weight portions, the Ag of 0.1 weight portion and weight
The Sn79.9 of amount part；
The purity of above-mentioned bismuth metal is 99.99%；
The purity of above-mentioned argent is 99.99%；
The purity of above-mentioned metallic tin is 99.99%；
In weld-aiding cream, each material weight part is, newtrex 3.85 weight portion, phenyl methyl siloxane homopolymer
3.85 weight portions, triethanolamine 0.38 weight portion, Al2O31.92 weight portion.
The method preparing brazing material:
Step one, preparation Sn-Bi alloy intermediate
Sn Yu Bi 1.5:1 by weight is weighed 30 weight portion Sn and 20 weight portion Bi, is then placed in
Intermediate-frequency heating furnace is heated to 455 DEG C, is incubated 2.1h, after being sufficiently stirred for, obtains Sn-Bi alloy intermediate,
Standby；
Step 2, preparation Sn-Ag alloy intermediate
Sn Yu Ag 4:1 by weight is weighed 0.4 weight portion Sn and 0.1 weight portion Ag, is then placed in
Heating furnace is heated to 805 DEG C, is incubated 3.1h, after being sufficiently stirred for, obtains Sn-Ag alloy intermediate, standby；
Step 3, prepare brazing material
(wherein Sn accounts for 30 weight portions, and Bi accounts for take Sn-Bi alloy intermediate 50 weight portion in step one
20 weight portions) and step 2 in Sn-Ag alloy intermediate 0.5 weight portion (wherein Sn accounts for 0.4 weight
Part, Ag accounts for 0.1 weight portion), separately take 49.5 weight portion Sn, put into stainless-steel pan melting, be heated to
502 DEG C, it is incubated 2.2h, it is thus achieved that metal alloy, utilizes centrifugal atomization apparatus that alloy is made metal alloy powder.
Step 4, prepare brazing material
Take newtrex 3.85 weight portion, phenyl methyl siloxane homopolymer 3.85 weight portion, triethanolamine
0.38 weight portion, Al2O31.92 weight portion, it is sequentially added into container heating, temperature controls at 80 DEG C, stirring
To dissolving, high speed dispersion 20 minutes, is cooled to room temperature.Add metal alloy powder ball milling, ball milling speed control
System, at 200-400 rev/min, obtains brazing material.
The brazing material performance parameter obtained is as shown in table 2:
Table 2
| Performance indications | Parameter |
| Density (g/cm3) | 8.08-8.10 |
| Fusing point (DEG C) | 164-170 |
| Heat conductivity (W/M K) | 40-47 |
| Hot strength (MPa) | 27 |
The brazing material melts temperature of the present invention is relatively low so that LEDbulb lamp can be assembled by soldering,
Simultaneously as the brazing material heat conductivity of the present invention is good, while realizing assembly connection, also have higher
Heat conductivility, can make to carry out between the object being brazed seamless link by soldering assembling, thus be formed
The heat dissipation channel of effect, it is possible to allow the heat distributed in LED light source effectively conduct, improve bulb lamp
Life-span and the qualification rate of production product.
The brazing material using the present invention carries out soldering, can apply to ceramic/glass soldering, pottery/pottery
The Inorganic Non-metallic Materials solderings such as soldering, glass/glass soldering, it is possible to be applied to metal aluminum alloy composite
/ pottery, metal aluminum alloy composite/glass, metal aluminum alloy composite/metal aluminum alloy composite
Soldering Deng material.
The brazing material of the present invention is applied to LEDbulb lamp, LED filament lamp carry out soldering assembling time, tool
Body implements step:
(1) LEDbulb lamp or LED filament lamp and above-mentioned brazing material are prepared；
(2) welding assembly cleans: the ceramic component (such as ceramic heat sink) of LED is put into pottery clear
In lotion, removed impurity and the greasy dirt on surface by ultrasonic waves for cleaning 1-2 minute, then rinse with substantial amounts of water
Post-drying；
(3) with fixture or other setting tools, ceramic heat sink and glass lamp shade are fixed on rigging position；
(4) welding position being injected between ceramic heat sink and glass lamp shade by solder, welding position can be
Reserved brazing material storage tank (such as around the annular groove etc. of lampshade cervical region)；
(5) after solder injects, heater is put into and be passed to ceramic heat sink and glass lamp shade, heating
Device can be Muffle furnace, baking oven or with multiple heating zones and the sintering/soldering/metal in a natural cooling district
Change one atmosphere meshbeltfurnace.The device that can also have heating function for other, can realize adding brazing material
Heat also reaches melted to carry out soldering.
As it is shown in figure 1, be temperature controlled processes in preferred soldering processes.
When using meshbeltfurnace to carry out soldering, preferably 8 temperature control districts and 1 natural cooling district, it is possible to select few
In 8 temperature control districts, as long as the melt temperature of brazing material can be risen to and can delay the slow cooling degree of liter, because
The danger of fragmentation can be there is in some Inorganic Non-metallic Materials (such as glass) when rising sharply rapid drawdown temperature.
As it is shown in figure 1, by guipure rate controlled at every 5 minutes by a warm area, the 1st warm area temperature sets
Being set to 60 DEG C, the 2nd warm area design temperature is 90 DEG C, and the 3rd warm area design temperature is 120 DEG C, the 4th
Individual warm area design temperature is 150 DEG C, and the 5th warm area design temperature is 180 DEG C, the 6th warm area design temperature
Being 150 DEG C, the 7th warm area design temperature is 120 DEG C, and the 8th warm area design temperature is 80 DEG C.Pass through
It is cooled to room temperature by natural cooling district again after heating zone；
(6) take out the LEDbulb lamp assembled, wipe the solder of spilling with ethanol and non-dust cloth.
By the brazing material of the present invention, it is possible to realize metal aluminum alloy composite/composite ceramics/glass etc.
Nonmetallic materials connect, as a kind of unleaded brazing material (existing soldering lower than existing brazing material fusing point
The fusing point of material is generally greater than the fusing point 217 DEG C of Sn-Pb eutectic), solve this while reducing brazing temperature
Class material is difficult to, due to self stable chemical nature, the technological difficulties connected.
Last it is noted that above-described each embodiment is merely to illustrate technical scheme, and
Non-to its restriction；Although the present invention being described in detail with reference to previous embodiment, this area common
Skilled artisans appreciate that the technical scheme described in previous embodiment still can be modified by it, or
Person carries out equivalent to wherein part or all of technical characteristic；And these amendments or replacement, do not make corresponding
The essence of technical scheme departs from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a brazing material, it is characterised in that: include
The metal alloy powder of 80-90 weight portion and the weld-aiding cream of 10-20 weight portion；
Described metal alloy powder includes materials described below:
1-20 weight portion Bi, 0.1-1 weight portion Ag and 79-99 weight portion Sn；And
Described weld-aiding cream is by Colophonium and derivant, polyorganosiloxane resin, tetraethoxysilane, surface activity
One or more compositions in agent, antioxidant and inorganic filler.
Brazing material the most according to claim 1, it is characterised in that: described Colophonium and derivant thereof are
One or more in natural grease Colophonium, newtrex and part-polymerised rosin.
Brazing material the most according to claim 1, it is characterised in that: described polyorganosiloxane resin is poly-
One or both of dimethyl siloxane and phenyl methyl siloxane homopolymer.
Brazing material the most according to claim 1, it is characterised in that: described surfactant is fat
One or more in acid polyoxyethylene ester and triethanolamine.
Brazing material the most according to claim 1, it is characterised in that: described antioxidant is benzotriazole
With one or more in phytic acid.
Brazing material the most according to claim 1, it is characterised in that: described inorganic filler is SiO2
With in Al2O3 one or more.
Brazing material the most according to claim 1, it is characterised in that: described Bi, Ag and Sn's
Purity is 99.99%, and the purity of described tetraethoxysilane is analytical pure.
8. the method for brazing material according to any one of preparation claim 1 to 7, it is characterised in that: include
Following step:
Step one, preparation Sn-Bi alloy intermediate
By weight part ratio (1.5-2): Sn Yu Bi of 1 is heated to 450 ± 10 DEG C, it is incubated 1.5h ± 0.5h,
Sn-Bi alloy intermediate is obtained after being sufficiently stirred for, standby；
Step 2, preparation Sn-Ag alloy intermediate
By weight portion (4-5): Sn Yu Ag of 1 is heated to 800 ± 10 DEG C, it is incubated 3h ± 0.5h, fully
Sn-Ag alloy intermediate is obtained after stirring, standby；
Step 3, prepare metal alloy powder
Take weight ratio (0.41-120): the Sn-Bi alloy intermediate of 1 and Sn-Ag alloy intermediate, separately take
The pure Sn of 38.6-92.5 weight portion, puts into stainless-steel pan melting together, is heated to 500 ± 10 DEG C, protects
Temperature 2h ± 0.5h, it is thus achieved that metal alloy, utilizes atomising device that described metal alloy is made metal alloy powder；
Step 4, prepare brazing material
By weld-aiding cream 10-20 weight portion, by Colophonium and derivant thereof, tetraethoxy-silicane, surfactant,
One or more of antioxidant and inorganic filler are sequentially added into container heating, and temperature controls at 80 ± 10 DEG C
Degree, high speed dispersion 20 ± 5min after stirring to dissolving, it is cooled to room temperature,
The metal alloy powder that step 3 prepares is added thereto and ball milling, obtains brazing material.
The method preparing brazing material the most according to claim 8, it is characterised in that: step 3 is adopted
By the method for atomization, described metal alloy is made metal alloy powder.
The method preparing brazing material the most according to claim 9, it is characterised in that: described atomization
It is atomized for centrifugal atomizing, aerosolization or sound.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610390019.0A CN105880872A (en) | 2016-06-03 | 2016-06-03 | Brazing material and preparing method thereof |
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| CN201610390019.0A CN105880872A (en) | 2016-06-03 | 2016-06-03 | Brazing material and preparing method thereof |
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ID=56710081
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| CN201610390019.0A Pending CN105880872A (en) | 2016-06-03 | 2016-06-03 | Brazing material and preparing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106271217A (en) * | 2016-09-23 | 2017-01-04 | 工业和信息化部电子第五研究所华东分所 | A kind of disposable halogen-free scaling powder and low temperature solder stick |
| CN108188405A (en) * | 2017-12-21 | 2018-06-22 | 苏州新锐合金工具股份有限公司 | A kind of method for improving carbide alloy mixture ball milling dispersing uniformity |
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| CN104668818A (en) * | 2015-01-16 | 2015-06-03 | 北京鹏瑞中联科技有限公司 | Low-voidage soldering paste for packaging semiconductor chip and preparation method of low-voidage soldering paste |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106271217A (en) * | 2016-09-23 | 2017-01-04 | 工业和信息化部电子第五研究所华东分所 | A kind of disposable halogen-free scaling powder and low temperature solder stick |
| CN108188405A (en) * | 2017-12-21 | 2018-06-22 | 苏州新锐合金工具股份有限公司 | A kind of method for improving carbide alloy mixture ball milling dispersing uniformity |
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