CN103521942A - Novel brazing flux used for stainless steel and aluminum brazing - Google Patents
Novel brazing flux used for stainless steel and aluminum brazing Download PDFInfo
- Publication number
- CN103521942A CN103521942A CN201310445105.3A CN201310445105A CN103521942A CN 103521942 A CN103521942 A CN 103521942A CN 201310445105 A CN201310445105 A CN 201310445105A CN 103521942 A CN103521942 A CN 103521942A
- Authority
- CN
- China
- Prior art keywords
- brazing
- brazing flux
- stainless steel
- novel
- fluoride
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3603—Halide salts
- B23K35/3605—Fluorides
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Coating With Molten Metal (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
The invention relates to brazing flux used for brazing, in particular to novel brazing flux used for stainless steel and aluminum brazing. The composition of the brazing flux comprises potassium fluoroaluminate+potassium hexafluoroaluminate (KA1F4+K3A1F6) eutecticum, zinc fluoride (ZnF2), copper fluoride (CuF2), and stannic fluoride (SnF4). The novel brazing flux is free of corrosion, and ingredient preparation is simple and convenient, so that production cost is low. Under high temperature, the madefaction and the spreadability of the brazing flux are favorable to the madefaction and the spreadability of brazing filler metal. Welded products are thin in welding joint, high in strength, free of cold solder joints, free of brazing filler metal stacking, and small in residue of brazing flux after welding. Moreover, the residue is easy to clean up. The novel brazing flux used for stainless steel and aluminum brazing is low in cost, simple in preparation, and high in practical value.
Description
Technical field
The present invention relates to a kind of soldering acid, the New type soldering flux that especially a kind of stainless steel and aluminium soldering are used.
Background technology
Aluminium and Al-alloy products are widely used with its cheap price and high specific stiffness, specific strength, yet due to aluminium and aluminium alloy fusing point low, the cause that brazing property is poor, the soldering of aluminium and aluminium alloy is the difficult problem in material soldering in recent years always, and the welding of the refractory metals such as aluminium and aluminium alloy and copper, iron is more difficult problem.
Summary of the invention
The present invention is intended to address the above problem, the New type soldering flux that provides a kind of stainless steel and aluminium soldering to use, its use is played important effect to the welding between stainless steel and aluminium, the production joint of welding is thin, intensity is high, without rosin joint, pile up without solder, brazing flux less residue after welding, its technical scheme adopting is as follows:
The New type soldering flux that stainless steel and aluminium soldering are used, each composition of described brazing flux is (unit: be wt%): ptfe aluminum potassium+potassium hexafluoroaluminate (KAlF by weight percentage
4+ K
3alF
6) eutectic 97.0～98.5, zinc fluoride (ZnF
2) 0.6～1.8, copper fluoride (CuF
2) 0.05～0.15, tin fluoride (SnF
4) 0.2～0.65; Described ptfe aluminum potassium+potassium hexafluoroaluminate (KAlF
4+ K
3alF
6) eutectic can form a not nonhygroscopic coating of burn on mother metal surface, can effectively stop mother metal surface oxidized, improves the chemical stability of mother metal; Described zinc fluoride (ZnF
2), copper fluoride (CuF
2), tin fluoride (SnF
4) mother metal is had to slight corrosion, thus groove formed, be beneficial to the wetting of brazing flux and sprawl, under brazing flux capillarity, butt welded seam is filled, and through crystallisation by cooling, forms weld seam; Zn, Cu, Sn can reduce brazing flux fusing point, improve the mobility of brazing flux, improve the spreadability of brazing flux.
Tool of the present invention has the following advantages: corrosion-free, become that assignment system is simple and convenient, production cost is low; Under high temperature, wetting and the spreadability of brazing flux, thereby be beneficial to the wetting of solder and sprawl, the production joint of welding is thin, intensity is high, without rosin joint, pile up without solder, brazing flux less residue after welding, and residue easily cleans up, it is the New type soldering flux that a kind of cost is low, preparation is simple, practical value is high stainless steel and aluminium soldering are used.
The specific embodiment
Below in conjunction with example, the invention will be further described:
The New type soldering flux that stainless steel and aluminium soldering are used, each composition of described brazing flux is (unit: be wt%): ptfe aluminum potassium+potassium hexafluoroaluminate (KAlF by weight percentage
4+ K
3alF
6) eutectic 97.0～98.5, zinc fluoride (ZnF
2) 0.6～1.8, copper fluoride (CuF
2) 0.05～0.15, tin fluoride (SnF
4) 0.2～0.65; Described ptfe aluminum potassium+potassium hexafluoroaluminate (KAlF
4+ K
3alF
6) eutectic can form a not nonhygroscopic coating of burn on mother metal surface, can effectively stop mother metal surface oxidized, improves the chemical stability of mother metal; Described zinc fluoride (ZnF
2), copper fluoride (CuF
2), tin fluoride (SnF
4) mother metal is had to slight corrosion, thus groove formed, be beneficial to the wetting of brazing flux and sprawl, under brazing flux capillarity, butt welded seam is filled, and through crystallisation by cooling, forms weld seam; Zn, Cu, Sn can reduce brazing flux fusing point, improve the mobility of brazing flux, improve the spreadability of brazing flux.
With way of example, describe the present invention above, but the invention is not restricted to above-mentioned specific embodiment, all any changes of doing based on the present invention or modification all belong to the scope of protection of present invention.
Claims (1)
1. the New type soldering flux that stainless steel and aluminium soldering are used, is characterized in that, each composition of described brazing flux is (unit: be wt%): ptfe aluminum potassium+potassium hexafluoroaluminate (KAlF by weight percentage
4+ K
3alF
6) eutectic 97.0～98.5, zinc fluoride (ZnF
2) 0.6～1.8, copper fluoride (CuF
2) 0.05～0.15, tin fluoride (SnF
4) 0.2～0.65.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310445105.3A CN103521942A (en) | 2013-09-26 | 2013-09-26 | Novel brazing flux used for stainless steel and aluminum brazing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310445105.3A CN103521942A (en) | 2013-09-26 | 2013-09-26 | Novel brazing flux used for stainless steel and aluminum brazing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103521942A true CN103521942A (en) | 2014-01-22 |
Family
ID=49924481
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310445105.3A Pending CN103521942A (en) | 2013-09-26 | 2013-09-26 | Novel brazing flux used for stainless steel and aluminum brazing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103521942A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934595A (en) * | 2014-03-04 | 2014-07-23 | 南京航空航天大学 | Cesium-rubidium brazing flux used for brazing aluminum steel and aluminum bronze |
| CN104551450A (en) * | 2014-12-11 | 2015-04-29 | 南京航空航天大学 | Caesium rubidium soldering flux containing gallium oxide |
| CN105215575A (en) * | 2015-09-08 | 2016-01-06 | 武汉理工大学 | A kind of aluminium alloy/stainless steel melts soldering acid |
| CN105772988A (en) * | 2016-03-25 | 2016-07-20 | 武汉理工大学 | Copper-containing aluminum alloy/stainless steel molten brazing flux |
| CN111250895A (en) * | 2020-03-26 | 2020-06-09 | 郑州机械研究所有限公司 | Aluminum brazing flux for brazing aluminum alloy honeycomb plate and preparation method thereof |
-
2013
- 2013-09-26 CN CN201310445105.3A patent/CN103521942A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103934595A (en) * | 2014-03-04 | 2014-07-23 | 南京航空航天大学 | Cesium-rubidium brazing flux used for brazing aluminum steel and aluminum bronze |
| CN103934595B (en) * | 2014-03-04 | 2015-11-18 | 南京航空航天大学 | Can the brazing flux containing caesium rubidium of soldering aluminum steel and aluminum bronze |
| CN104551450A (en) * | 2014-12-11 | 2015-04-29 | 南京航空航天大学 | Caesium rubidium soldering flux containing gallium oxide |
| CN104551450B (en) * | 2014-12-11 | 2016-08-24 | 南京航空航天大学 | Caesium rubidium brazing flux containing gallium oxide |
| CN105215575A (en) * | 2015-09-08 | 2016-01-06 | 武汉理工大学 | A kind of aluminium alloy/stainless steel melts soldering acid |
| CN105772988A (en) * | 2016-03-25 | 2016-07-20 | 武汉理工大学 | Copper-containing aluminum alloy/stainless steel molten brazing flux |
| CN111250895A (en) * | 2020-03-26 | 2020-06-09 | 郑州机械研究所有限公司 | Aluminum brazing flux for brazing aluminum alloy honeycomb plate and preparation method thereof |
| CN111250895B (en) * | 2020-03-26 | 2022-02-01 | 郑州机械研究所有限公司 | Aluminum brazing flux for brazing aluminum alloy honeycomb plate and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140122 |