CN102152023A - Brazing filler metal for high-frequency induction brazing of aluminum steel and brazing method of brazing filler metal - Google Patents
Brazing filler metal for high-frequency induction brazing of aluminum steel and brazing method of brazing filler metal Download PDFInfo
- Publication number
- CN102152023A CN102152023A CN2010101187619A CN201010118761A CN102152023A CN 102152023 A CN102152023 A CN 102152023A CN 2010101187619 A CN2010101187619 A CN 2010101187619A CN 201010118761 A CN201010118761 A CN 201010118761A CN 102152023 A CN102152023 A CN 102152023A
- Authority
- CN
- China
- Prior art keywords
- brazing
- filler metal
- brazing filler
- frequency induction
- steel
- 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
Images
Landscapes
- Nonmetallic Welding Materials (AREA)
Abstract
The invention relates to a brazing filler metal for high-frequency induction brazing of aluminum steel and a brazing method of the brazing filler metal. In the brazing filler metal, Al-Si based alloy powder is used as a brazing filler metal component of a welding flux; the granularity of the brazing filler metal alloy is -150 to +300 meshes, and the melting point of the brazing filler metal alloy is 570 to 580 DEG C; three kinds of villiaumite, namely KF, NaF and AlF3, are used as a brazing flux in a ratio of (KF and NaF) to AlF3 of 1 to 10; sodium potassium tartrate is used as a bonding agent; and the content of the brazing filler metal in the welding flux is 60 percent, the content of the brazing flux is 38 to 39 percent, and the bonding agent accounts for 1 to 2 percent. The brazing method comprises the following steps of: preparing the components; making the components pasty by using absolute ethanol; removing oxidized membranes from the surfaces to be brazed of steel and aluminum workpieces, and washing by using acetone; uniformly coating the mixed welding flux on the surfaces to be brazed and pressurizing, placing the welding flux into high-frequency induction heating equipment and protecting by using argon; and under a voltage of 4.5kV, heating for 30 seconds and unloading the voltage, and taking the workpiece out if the temperature of the workpiece is below 50 DEG C.
Description
Technical field
The present invention relates to aluminium/drill rod welding technology field.
Background technology
At present, the used electric energy of China's Aluminum Electrolysis Production is consumed by the electric field in aluminium cell and the production process, magnetic field and thermal field more than 50%, and Aluminum Electrolysis Production also has very big energy-saving potential.General aluminium electrolysis anode steel pawl is to adopt the low-carbon cast steel casting to form now, adopts steel aluminium compound blast weld tabs transition and aluminum guide soldering group to synthesize anode conducting device, and it mainly plays conductive electric current and carrying anode block weight, based on conduction.The compound blast weld tabs of this steel aluminium local voltage in the electrolysis production process is fallen higher, and current loss is bigger, and it is excessive to make that anode resistance consumes, and production cost is high, also causes the waste of a large amount of energy simultaneously.
At the problems referred to above, in recent years, consider the performances such as low-density, high-termal conductivity of high heat-intensity, hardness and the wearability of steel in aluminium/steel construction and aluminium alloy, so aluminium/steel connects, caused domestic and international researcher's extensive concern.But physical properties such as the density of aluminium, steel, fusing point, thermal conductivity differ greatly, and this impels the generation of thermal stress, and the oxide-film of infusibility can cause and have field trash in the weld seam, are difficult to they are linked together with traditional welding procedure.
Summary of the invention
The object of the present invention is to provide a kind of solder and method for welding of aluminum steel high-frequency induction brazing.
The present invention is a kind of solder and method for welding of aluminum steel high-frequency induction brazing, and wherein the solder of aluminum steel high-frequency induction brazing is selected the brazing filler metal compositions useful of Al-Si base alloy powder as scolder for use, and the granularity of brazing filler metal alloy is-150～+ 300 orders, and fusing point is 570～580 ℃; Select three kinds of villiaumite KF, NaF, AlF for use
3As brazing flux, its ratio is (KF, NaF): AlF
3=1: 10); Select rocchelle's salt to make binding agent; Solder content is 60% in the scolder, and brazing flux content is 38-39%, and binding agent accounts for 1%-2%.
The aluminum steel high-frequency induction brazing method is ready to each component by the above, with absolute ethyl alcohol furnishing pasty state, removes to be brazed oxide-film of steel and aluminium workpiece, cleans with acetone then; After evenly coating the scolder that mixes up on to be brazed, pressurize, put into HF induction heating apparatus and adopt argon shield; Under the voltage of 4.5KV, heat and unload voltage after 30 seconds, treat that workpiece temperature takes out after 50 ℃.
Usefulness of the present invention is: by reducing the method for device resistance, reach the purpose of economize on electricity consumption reduction.Adopt the HFI welding mode under the inert gas shielding, the external environment that generation makes the variation of joint area metallicity when not only having avoided fusing makes joint have height reliability to connecting the harmful effect of surface physics state.
Description of drawings
Fig. 1 is aluminium/drill rod welding zone X ray figure that spreads out, and Fig. 2～Fig. 5 is aluminium/drill rod welding zone SEM figure.
The specific embodiment
The present invention is a kind of solder and method for welding of aluminum steel high-frequency induction brazing, and wherein the solder of aluminum steel high-frequency induction brazing is selected the brazing filler metal compositions useful of Al-Si base alloy powder as scolder for use, and the granularity of brazing filler metal alloy is-150～+ 300 orders, and fusing point is 570～580 ℃; Select three kinds of villiaumite KF, NaF, AlF for use
3As brazing flux, its ratio is (KF, NaF): AlF
3=1: 10); Select rocchelle's salt to make binding agent; Solder content is 60% in the scolder, and brazing flux content is 38-39%, and binding agent accounts for 1%-2%.
The aluminum steel high-frequency induction brazing method is ready to each component by the above, with absolute ethyl alcohol furnishing pasty state, removes to be brazed oxide-film of steel and aluminium workpiece, cleans with acetone then; After evenly coating the scolder that mixes up on to be brazed, pressurize, put into HF induction heating apparatus and adopt argon shield; Under the voltage of 4.5KV, heat and unload voltage after 30 seconds, treat that workpiece temperature takes out after 50 ℃.
As shown in Figure 1, mainly there is Al at the interface in Al/45 steel argon shield soldering
0.7Fe
3Si
0.3, Al
76.84Fe
24, Al and Fe.Al
0.7Fe
3Si
0.3The existence of solid solution and Al makes joint that certain welding plasticity and toughness be arranged, and makes joint have good corrosion resistance, Al
76.84Fe
24Existence brazed seam hardness is raise.
As Fig. 2, shown in Figure 3, under JSM-6700F type ESEM, observe aluminium/steel high frequency brazing sample joint, have tangible transition zone to occur, and transition region is comparatively smooth, do not have the welding crackle and occur; As shown in Figure 4, the aluminium side have a large amount of equiax crystal to occur and along transition zone to aluminium base extension, the equiax crystal district closely is connected with parent metal, forms the metallic bond combination and makes weld strength improve greatly.As shown in Figure 5, the welding transition district connects closely, and the surface is made of many shrinkage pools, claims little hole again.In the middle of little hole is the impurity or the second phase particle, and the difference of the second phase particle and matrix material elasticity and plasticity forms the local plastic district, and this is very favourable to improving joint mechanical property.
Utilize XH-1000 type microhardness testers that microsclerometry is carried out at aluminium/steel interface, load is 25gf, 5 seconds load times.As shown in table 1, fall after rising to Al side hardness from No. 45 steel sides.The hardness of nearly transition zone aluminium and steel is all apparently higher than away from the transition zone zone, and reaches maximum in transition zone hardness.
The microhardness of table 1 aluminium/drill rod weldering near interface
In order to evaluate the resistance sizes of aluminium under the high-frequency induction brazing/steel weld tabs, the weld tabs resistance that the compound explosion of aluminium/steel is welded contrasts, and concrete steps are as follows:
(1) will weld good aluminium/steel High Frequency Of Recombination induction weld tabs and the compound blast weld tabs of aluminium/steel and be cut into the square sample of 5 * 5mm, and put into acetone and take out after with ultrasonic cleaner cleaning 10min and dry up with line.
(2) use QJ-23 type D.C. resistance bridge measurement overall electrical resistance then, in order to guarantee the accuracy of measurement result, average after each sample is surveyed 3 times and count result of the test, the compound explosive welding (EW) built-in testing of aluminium/steel the results are shown in Table 2, and aluminium/steel High Frequency Of Recombination induction concrete experimental data of weld tabs and test result see Table 3.
The compound explosive welding (EW) sheet resistance of table 2 aluminium/steel value
The compound weld tabs resistance value of aluminium/steel after table 3 soldering of the present invention
(3) as calculated, at voltage 4.5KV, the resistance of the compound weld tabs resistance ratio blast of the aluminium/steel of acquisition weld tabs will hang down 2.7%, reach energy saving purposes during 30s heat time heating time.
Claims (2)
1. the solder of aluminum steel high-frequency induction brazing is selected the brazing filler metal compositions useful of Al-Si base alloy powder as scolder for use, and the granularity of brazing filler metal alloy is-150～+ 300 orders, and fusing point is 570～580 ℃; Select three kinds of villiaumite KF, NaF, AlF for use
3As brazing flux, its ratio is (KF, NaF): AlF
3=1: 10); Select rocchelle's salt to make binding agent; Solder content is 60% in the scolder, and brazing flux content is 38-39%, and binding agent accounts for 1%-2%.
2. the aluminum steel high-frequency induction brazing method is ready to each component by claim 1, with absolute ethyl alcohol furnishing pasty state, removes to be brazed oxide-film of steel and aluminium workpiece, cleans with acetone then; After evenly coating the scolder that mixes up on to be brazed, pressurize, put into HF induction heating apparatus and adopt argon shield; Under the voltage of 4.5KV, heat and unload voltage after 30 seconds, treat that workpiece temperature takes out after 50 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101187619A CN102152023A (en) | 2010-03-04 | 2010-03-04 | Brazing filler metal for high-frequency induction brazing of aluminum steel and brazing method of brazing filler metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101187619A CN102152023A (en) | 2010-03-04 | 2010-03-04 | Brazing filler metal for high-frequency induction brazing of aluminum steel and brazing method of brazing filler metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102152023A true CN102152023A (en) | 2011-08-17 |
Family
ID=44433871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101187619A Pending CN102152023A (en) | 2010-03-04 | 2010-03-04 | Brazing filler metal for high-frequency induction brazing of aluminum steel and brazing method of brazing filler metal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102152023A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513631A (en) * | 2011-11-18 | 2012-06-27 | 南京理工大学 | Induction heating stud soldering method for aluminum-steel stud |
| CN102765564A (en) * | 2012-06-13 | 2012-11-07 | 宁波联合华发五金机械有限公司 | Oil heater and welding method thereof |
| CN103203564A (en) * | 2013-04-01 | 2013-07-17 | 哈尔滨工业大学 | Soldering flux for aluminum and steel dissimilar metal alternating-current arc melt brazing |
| CN103215586A (en) * | 2013-05-10 | 2013-07-24 | 哈尔滨工业大学（威海） | Preparation method of aluminum coating on surface of steel substrate material |
| CN103603002A (en) * | 2013-11-14 | 2014-02-26 | 北京航空航天大学 | Surface film removing agent capable of realizing zero-defect direct-current positive polarity welding of 6XXX-series aluminum alloy |
| CN103624382A (en) * | 2013-11-15 | 2014-03-12 | 上海航天设备制造总厂 | Method for welding non-defective low-energy-consumption LD10 aluminum alloy |
| CN107052493A (en) * | 2017-04-10 | 2017-08-18 | 河南科技大学 | A kind of brazing device and method for welding of many auxiliary |
| CN111112773A (en) * | 2020-01-10 | 2020-05-08 | 天津普传铜业有限公司 | Welding method of direct-drive busbar |
| CN112872525A (en) * | 2019-11-29 | 2021-06-01 | 新疆众和股份有限公司 | Connecting method of guide rod and steel claw for electrolytic aluminum |
| CN113084287A (en) * | 2021-04-02 | 2021-07-09 | 星箭精工科技(常州)有限公司 | Non-vacuum brazing method for plasma cutting electrode |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6240998A (en) * | 1985-08-19 | 1987-02-21 | Nippon Light Metal Co Ltd | Flux for brazing and its production |
| CN87101020A (en) * | 1987-04-22 | 1987-12-23 | 轻工业上海焊接技术研究所 | A kind of fluoride flux and a kind of aluminium silicon type solder |
-
2010
- 2010-03-04 CN CN2010101187619A patent/CN102152023A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6240998A (en) * | 1985-08-19 | 1987-02-21 | Nippon Light Metal Co Ltd | Flux for brazing and its production |
| CN87101020A (en) * | 1987-04-22 | 1987-12-23 | 轻工业上海焊接技术研究所 | A kind of fluoride flux and a kind of aluminium silicon type solder |
Non-Patent Citations (4)
| Title |
|---|
| 《工艺与新技术》 20090828 刘广桥等 "Al/45钢高频感应钎焊工艺对导电性能的影响" 37 2 第38卷, 第8期 * |
| 《金属铸锻焊技术》 20091210 刘广桥等 "Al/45钢高频感应钎焊焊料的研制" 12 1-2 第38卷, 第23期 * |
| 刘广桥等: ""Al/45钢高频感应钎焊工艺对导电性能的影响"", 《工艺与新技术》 * |
| 刘广桥等: ""Al/45钢高频感应钎焊焊料的研制"", 《金属铸锻焊技术》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513631A (en) * | 2011-11-18 | 2012-06-27 | 南京理工大学 | Induction heating stud soldering method for aluminum-steel stud |
| CN102765564A (en) * | 2012-06-13 | 2012-11-07 | 宁波联合华发五金机械有限公司 | Oil heater and welding method thereof |
| CN102765564B (en) * | 2012-06-13 | 2015-01-14 | 宁波联合华发五金机械有限公司 | Oil heater and welding method thereof |
| CN103203564A (en) * | 2013-04-01 | 2013-07-17 | 哈尔滨工业大学 | Soldering flux for aluminum and steel dissimilar metal alternating-current arc melt brazing |
| CN103215586A (en) * | 2013-05-10 | 2013-07-24 | 哈尔滨工业大学（威海） | Preparation method of aluminum coating on surface of steel substrate material |
| CN103603002A (en) * | 2013-11-14 | 2014-02-26 | 北京航空航天大学 | Surface film removing agent capable of realizing zero-defect direct-current positive polarity welding of 6XXX-series aluminum alloy |
| CN103624382A (en) * | 2013-11-15 | 2014-03-12 | 上海航天设备制造总厂 | Method for welding non-defective low-energy-consumption LD10 aluminum alloy |
| CN107052493A (en) * | 2017-04-10 | 2017-08-18 | 河南科技大学 | A kind of brazing device and method for welding of many auxiliary |
| CN112872525A (en) * | 2019-11-29 | 2021-06-01 | 新疆众和股份有限公司 | Connecting method of guide rod and steel claw for electrolytic aluminum |
| CN112872525B (en) * | 2019-11-29 | 2022-10-14 | 新疆众和股份有限公司 | Connecting method of guide rod and steel claw for electrolytic aluminum |
| CN111112773A (en) * | 2020-01-10 | 2020-05-08 | 天津普传铜业有限公司 | Welding method of direct-drive busbar |
| CN113084287A (en) * | 2021-04-02 | 2021-07-09 | 星箭精工科技(常州)有限公司 | Non-vacuum brazing method for plasma cutting electrode |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102152023A (en) | Brazing filler metal for high-frequency induction brazing of aluminum steel and brazing method of brazing filler metal | |
| CN111558793B (en) | Ni-based flux-cored wire and method for preparing copper-steel-based gradient composite material | |
| CN103170759B (en) | Aluminum welding powder and welding method thereof | |
| CN101204762A (en) | Al and Al alloy soft braze welding metal displaced type unleaded welding soldering flux | |
| CN106244851B (en) | A kind of low temperature tin alloy and preparation method thereof | |
| CN101856758A (en) | Method for welding hard alloy steelwork and 45 steelwork | |
| CN105499833A (en) | High-temperature brazing material for brazing tungsten-copper alloy and copper or copper alloy and brazing method of high-temperature brazing material | |
| CN104476007B (en) | A kind of high-melting point lead-free halogen-free soldering tin paste and preparation method thereof | |
| CN104043913A (en) | Exothermic welding powder for welding novel grounding grid materials | |
| CN105458431A (en) | Brazing preparing method for titanium copper sheathing composite bar | |
| CN104772578B (en) | A kind of solder for including titanium zirconium cupro-nickel | |
| CN104737630A (en) | Soldering method for low-temperature solder paste | |
| CN101269436B (en) | Aluminum-titanium alloy dissimilar metal scraping and wiping agitation soldering method | |
| CN108330508A (en) | A kind of connection method of cermet inert anode used for aluminium electrolysis and metal conducting bar | |
| CN104752531B (en) | Electrode slurry and back electrode of solar cell used for solar batteries and preparation method thereof | |
| CN102873422B (en) | Aluminum and aluminum alloy and copper diffusion brazing process | |
| CN104416296A (en) | Method and application for improving electromigration resistance of interconnection welding spots of welding fluxes | |
| WO2024149172A1 (en) | Electric transmission structure | |
| CN103769760A (en) | Low-melting-point composite self-fluxing aluminum brazing filler metal and preparation method thereof | |
| CN102485698B (en) | Connection method of brass and silicon carbide ceramic, and connected piece | |
| CN112475590B (en) | Copper-coated steel heat release welding flux and preparation method and application thereof | |
| CN103801783B (en) | High-volume fractional silicon-carbide particle reinforced aluminium-base composite material solid-liquid two-phase region method for welding | |
| CN102059430B (en) | Method for welding and repairing copper surface defect of aluminum-copper composite board transition joint | |
| CN113977133A (en) | Corrosion-resistant composite brazing filler metal for copper-aluminum transition wire clamp and preparation method thereof | |
| CN108723534B (en) | Electrolytic aluminum cathode steel-aluminum fusion brazing welding method |
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: 20110817 |