CN103551757B - Soldering alusil alloy seamless flux-cored wire, preparations and applicatio - Google Patents
Soldering alusil alloy seamless flux-cored wire, preparations and applicatio Download PDFInfo
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- CN103551757B CN103551757B CN201310532828.7A CN201310532828A CN103551757B CN 103551757 B CN103551757 B CN 103551757B CN 201310532828 A CN201310532828 A CN 201310532828A CN 103551757 B CN103551757 B CN 103551757B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/26—Selection of soldering or welding materials proper with the principal constituent melting at less than 400 degrees C
-
- 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
- B23K35/361—Alumina or aluminates
-
- 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
- B23K35/368—Selection of non-metallic compositions of core materials either alone or conjoint with selection of soldering or welding materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/40—Making wire or rods for soldering or welding
- B23K35/406—Filled tubular wire or rods
-
- 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
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
Abstract
Soldering alusil alloy seamless flux-cored wire, preparations and applicatio, belong to flux-cored wire technical field.Adopt alusil alloy as crust, medicine core is scaling powder.By antivacuum founding, extruding, rolling and annealing operation, prepare crust alusil alloy band, band is healed up into the cored rod of o shape section via pressure roller rolling while, medicine core powder is coated in welding rod, prepares the seamless flux-cored wire blank of diameter range at Φ 3.8-4.4mm; Then through drawing and annealing process, tube reducing to Φ 1.0mm and more than.The advantage of the soldering alusil alloy seamless flux-cored wire in the present invention is that solder carries brazing flux, manually need not add again, can realize the automatic welding of soldering.
Description
Technical field
The present invention relates to soldering alusil alloy seamless flux-cored wire and technology of preparing, particularly relate to the founding of alusil alloy material, rolling, the preparation method of seamless flux-cored wire and application thereof, belong to flux-cored wire technical field.
Background technology
Density is little, specific strength advantages of higher owing to having for aluminium alloy, has obtained and apply more and more widely in Aeronautics and Astronautics industry.Such as much traditional copper alloy waveguide, high-frequency element replace by aluminium alloy, utilize the constructed of aluminium of method for welding manufacture complexity to be optimal method.Along with the lightweight of delivery vehicle, the range of application of aluminium alloy is gradually wide, and it connects particularly Welding Problems and is paid attention to widely.
One of conventional Welded method is soldering, and its feature is obvious compared with melting welding: heating-up temperature generally lower than mother metal fusing point, to mother metal physical and chemical performance without obvious adverse effect; Brazing temperature is low, easily to whole workpiece homogeneous heating etc.But the soldering difficulty of aluminium alloy is comparatively large, and main cause is:
(1) chemical property of aluminium is comparatively active, extremely strong to the affinity of oxygen, and surface very easily forms the oxide-film of one deck densification, hinders the atoms permeating between mother metal and solder, wetability is reduced greatly;
(2) fusing point of aluminum alloy brazing solder and aluminium alloy fusing point are more or less the same, and during soldering, aluminium alloy mother metal crystal grain is easy to grow up, or cause the excessive melting of mother metal to form corrode defect;
(3) due to the difference of mother metal and weld seam electrode potential, easily produce electrochemical corrosion, bring adverse effect to the corrosion resistance of joint;
(4) brazing flux is generally halide salt, has severe corrosive, and therefore joint corrodes very easily after welding.
Cocrystallized Al-Si alloy solder, because having good wetability, mobility, the corrosion resistance of soldered fitting and machinability, is a kind of almit most widely used in aluminium alloy brazing.Al-Si solder because having good wetability, mobility, the corrosion resistance of soldered fitting and machinability, therefore is most widely used a kind of almit.
Flux-cored wire is a kind of Novel welding material developed rapidly in recent years, has obtained apply widely in industrially developed country.According to data introduction: Japan's ratio that its welding rod accounted for whole wlding so far from 1985 drops to 20% from 45%; And flux-cored wire proportion has reached nearly 30%.In the U.S., welding rod ratio drops to less than 40%, and flux-cored wire is then close to 40%; Every Western Europe country's welding rod accounts for 30%, and flux-cored wire accounts for 20%.As can be seen here, industrially developed country's tradition welding rod ratio constantly declines in recent decades, and the ratio of flux-cored wire in whole wlding increases substantially.
Flux-cored wire is also referred to as flux cored wire, can by the kind of adjustment medicine core additive and ratio, design the welding material of various different purposes easily, because the adjustment that its alloying component can be flexible, cannot smelt and rolling so many kinds of flux-cored wire are solid welding wires.Flux-cored wire has the features such as efficiency is high, welding usability good, cost is lower, has been widely used in the industries such as shipbuilding, bridge, pressure vessel, automobile, railway transportation, pipeline, ocean engineering, power plant construction, mining, petrochemical industry, building machinery, heavy-duty machinery and skyscraper.
Flux-cored wire has compared obvious advantage with stick electrode with argon arc welding wire, mainly interrupted welding process is become the continuous print mode of production, thus decrease the number of welding point, improve weldquality, also improve production efficiency, saved the energy, inherit the advantage that the composition of welding rod is adjustable, its deposition efficiency even up to 4 of stick electrode times, can also have the series of advantages such as appearance of weld fairing is attractive in appearance, welding deformation is little.
Summary of the invention
The object of this invention is to provide a kind of alusil alloy seamless flux-cored wire, preparations and applicatio, it is for brazed aluminum alloy material.
Another object of the present invention is to provide a kind of processing method of alusil alloy sheet material, it is by antivacuum founding, extruding, rolling and annealing operation, solve the problem of alloy poor processability, adopt and can prepare the alusil alloy band that thickness is 0.5mm in this way.
Another object of the present invention is to provide a kind of molding method for preparing of soldering alusil alloy seamless flux-cored wire, the alusil alloy band of one fixed width is rolled into U-lag through rolling unit by it, add the medicine core powder according to formulated, under the rolling of forming rolls, heal up into the flux-cored wire blank of O shape section.
Another object of the present invention is to provide a kind of drawing and annealing process of soldering alusil alloy seamless flux-cored wire, adopt can be by diameter in this way the flux-cored wire of Φ 4.2mm through drawing, annealing operation, tube reducing to Φ 1.0mm and more than.
A kind of alusil alloy seamless flux-cored wire of the present invention, is characterized in that, flux-cored wire adopts alusil alloy as crust, and medicine core is scaling powder.
Wherein the siliceous mass percentage that consists of of alusil alloy crust is 4-15%, and surplus is aluminium and inevitable impurity.Medicine core is potassium fluoroaluminate, and its fusing point is 510 DEG C-530 DEG C.
Alusil alloy seamless flux-cored wire of the present invention is used for brazed aluminum alloy.
For achieving the above object, the present invention takes following design:
(1) founding of alusil alloy;
By to smelting temperature and cast temperature, the method for degassed refining and the control of time, founding goes out the alusil alloy bar that diameter is Φ 100mm.
(2) alusil alloy extruding, rolling and annealing operation;
Choosing suitable Extrusion Die Design, by the control to extrusion temperature and speed, is the sheet material of the bar extruding one-tenth ≠ 5mm of Φ 100mm by diameter, then through rolling and annealing operation, being processed into thickness is 0.5mm and above band.
(3) alusil alloy seamless flux-cored wire moulding process;
According to the appointed condition preparing flux-cored wire, the sheet material choosing suitable thickness is original material, in being coated on by brazing flux, prepares flux-cored wire while preparing medicine core.
(4) drawing process of seamless flux-cored wire;
Flux-cored wire diameter being about to Φ 4.2mm carries out drawing procedure, gropes drawing passes and intermediate anneal temperature, and processing flux-cored wire is to Φ 1.0mm and above size.
For preparing above-mentioned alusil alloy seamless flux-cored wire, specifically comprise the following steps:
(1) be 30% prepare alusil alloy, 99.999% rafifinal of weighing, 99.999% monocrystalline silicon by silicon content; Use intermediate frequency furnace heats, heat up add aluminium ingot in graphite clay crucible after, by after monocrystalline silicon fragmentation after aluminium ingot is melted, add in batches, with bell jar, silicon is pressed into aluminium liquid, the silicon added in aluminium liquid dissolves very fierce, after silicon is all melting down, ingot casting, the cast temperature of alloy is 720-750 DEG C;
(2) alusil alloy that silicon content is 4-15% is prepared, to weigh 99.999% rafifinal, ready aluminium is loaded in graphite crucible, heat up, treat that aluminium all melts and follow-up continuing be warming up to 750 DEG C, be pressed in aluminium liquid with graphite rod after adding AlSi30 intermediate alloy prepared by step (1), heat fused, liquation is stirred to accelerate the fusing of intermediate alloy at any time with graphite rod, silicon is evenly distributed in aluminium liquid, with the degassed refining of refining agent, again fully stir after refining agent reaction stops, leave standstill a moment, with graphite flake, bath surface oxidizing slag is taken off totally, charge-temperature pours into when reaching 700-750 DEG C in water-cooling casting iron rod mould and obtains alusil alloy bar,
(3) alusil alloy extruding, rolling and annealing operation;
Step (2) is placed in extrusion die and loads annealing furnace weight, arranging heating-up temperature is 380 DEG C-420 DEG C (preferably 400 DEG C), be incubated 3 hours, start extruding, extrusion temperature is 380 DEG C-420 DEG C (preferably 400 DEG C), the preferred 10mm/s of speed, after pressure, ribbon dimension is thickness is 5-8mm, and its width is generally 85mm;
By the above-mentioned alusil alloy band homogenizing annealing in the lehr squeezed out, annealing temperature is 400-440 DEG C (preferably 420 DEG C), be incubated and carry out hot rolling cogging rolling after 3 hours, in split rolling method, the temperature of material is 420 DEG C, returned in heating furnace by alloy after rolling 2-3 passage and heat, temperature is 420 DEG C, is incubated at least after 30min, continue split rolling method, such repeat-rolling is to the preferred 3.5mm of thickness 3-4mm() after proceed to intermediate rolling;
Intermediate rolling is annealing temperature is 400-440 DEG C (preferably 420 DEG C), is incubated 1 hour, is rolling to the preferred 0.8mm of thickness 0.6-1mm(after cold with stove), proceed to finished product rolling;
By preferred for thickness 0.6-1mm(0.8mm) alusil alloy band loads in box-annealing furnace, and 400-440 DEG C (preferably 420 DEG C) insulation is with after stove after 3 hours, and carrying out being cold working to thickness is 0.4-0.5mm;
(4) alusil alloy seamless flux-cored wire moulding process
The band of selecting step (3) is original material, is coated in welding rod, prepares the seamless flux-cored wire blank of diameter range at Φ 3.8-4.4mm while band is healed up into the cored rod of o shape section via the pressure roller rolling of different size by medicine core powder;
(5) drawing process of seamless flux-cored wire
Loaded by step (4) flux-cored wire blank in annealing furnace, 400-440 DEG C (preferably 420 DEG C) insulation is cold with stove after 3 hours, and carry out drawing procedure, cold drawing is to Φ 1.0mm or more size.
Advantage of the present invention is:
1, alusil alloy seamless flux-cored wire of the present invention utilizes the alusil alloy band processed, in brazing flux being coated on while preparing flux-cored wire, and finally realizing the shaping of seamless flux-cored wire, its maximum advantage is that solder carries brazing flux, does not need to add brazing flux again when soldering;
2, because solder carries brazing flux, when having parts with complex structures or large-scale welding welding to some, without the need to manually adding brazing flux, automatic welding can be realized.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described, but the present invention is not limited to following examples.
Embodiment 1
Step (1): adopt following preparation method to prepare aluminium silicon intermediate alloy, its component and mass percent are: Si:30%, Al: surplus (being called for short AlSi30).
Preparation technology is as follows:
A) standby raw material: outsourcing 99.999% rafifinal raw material, 99.999% monocrystalline silicon head Si-1 raw material; Calculate according to said components and mass percent proportioning, weigh.
B) use intermediate frequency furnace heating, heat up add aluminium ingot in graphite clay crucible after, by after monocrystalline silicon fragmentation after aluminium ingot is melted, add in batches in a small amount, with bell jar, silicon is pressed into aluminium liquid, the silicon added in aluminium liquid dissolves very fierce, after silicon is all melting down, ingot casting.The cast temperature of alloy is 720-750 DEG C;
Step (2):
Utilize the AlSi30 intermediate alloy prepared by step (1) to prepare alusil alloy bar that 10Kg component content is Si12%, method is as follows:
A) standby raw material: outsourcing 99.999% rafifinal raw material, AlSi30 intermediate alloy; According to siliceous be 12% carry out proportioning calculating, weigh.
B) ready aluminium is loaded in graphite crucible, be rapidly heated, treat that aluminium all melts and follow-up continuing be warming up to 750 DEG C, be pressed in aluminium liquid with graphite rod after adding AlSi30 intermediate alloy, heat fused, liquation is stirred to accelerate the fusing of intermediate alloy at any time with graphite rod, silicon is evenly distributed in aluminium liquid, with the degassed refining of refining agent, again fully stir after refining agent reaction stops, leave standstill a moment, with graphite flake, bath surface oxidizing slag is taken off totally, pour into when charge-temperature reaches 700-750 DEG C in water-cooling casting iron rod mould.
Step (3):
Aluminium silicon 12 alloy bar material step (2) prepared is squeezed into the band that thickness is 5mm, wide 85mm, and method is as follows:
A) extrusion equipment:
Extruder: 1200 tons of horizontal extruders;
Annealing furnace: resistance box-annealing furnace;
B) extrusion die:
Specification: ≠ 5 × 85mm, mould steel;
Lubricant: 60%24# cylinder oil+40% graphite powder
C) before extruding, aluminium silicon 12 alloy bar material and extrusion die are loaded resistance box-annealing furnace, setting heating-up temperature is 380 DEG C, is incubated 3 hours.Extrusion temperature is 380 DEG C, speed 10mm/s.
Step (4):
Aluminium silicon 12 alloy strip steel rolled stock step (3) squeezed out is 3.5mm through rolling process to thickness, and method is as follows:
A) rolling equipment:
Milling train: Φ 310 milling train;
Chamber type electric resistance furnace and other Hot-roller tools
B), before rolling, ensure that milling train bearing shell and roll surface keep good lubrication.Aluminium silicon 12 alloy strip steel rolled stock homogenizing annealing in box-annealing furnace that embodiment 3 is squeezed out, 420 DEG C of insulations carried out hot rolling cogging rolling after 3 hours, in split rolling method, the temperature of material is 420 DEG C, rolling 2-3 passage aft-loaded airfoil alloy returns in heating furnace and heats, temperature is 420 DEG C, after insulation 30min, continue split rolling method, after such repeat-rolling to 3.5mm, proceed to intermediate rolling.
Step (5):
Aluminium silicon 12 alloy strip steel rolled stock gone out by step (4) split rolling method is 0.8mm through finished product rolling process to thickness, and method is as follows:
A) rolling equipment:
Milling train: milling train in Φ 90 × 200 × 200mm tetra-roller;
Chamber type electric resistance furnace and other Hot-roller tools;
B) be that aluminium silicon 12 alloy strip steel rolled stock of 3.5mm loads in box-annealing furnace and heats by thickness in embodiment 4, annealing temperature is 420 DEG C, is incubated 1 hour, cold with stove, is rolling to 0.8mm.
Step (6):
A) rolling equipment:
Milling train: Φ 154 × 300mm finishing mill;
Chamber type electric resistance furnace and other Hot-roller tools;
B) be that aluminium silicon 12 alloy strip steel rolled stock of 0.8mm loads in box-annealing furnace by embodiment 5 thickness, 420 DEG C of insulations with after stove, carried out cold working after 3 hours.By the adjustment of drafts in the operation of rolling, ensure that the band processed is straight, being rolling to thickness by finisher is 0.5mm.
Step (7):
Aluminium silicon 12 alloy sheet material step (6) prepared carries out itemize trimming, for the preparation of flux-cored wire is prepared.
A) equipment is used:
Flux-cored wire draft machine
B) according to the different aluminium silicon 12 alloy sheet material choosing suitable width of diameter of flux-cored wire, the molding procedure of flux-cored wire is carried out by the pressure roller of different size, and brazing flux is within it coated, prepare the flux-cored wire that diameter is about Φ 4.2mm.Flux-cored wire is coated intact, without cracking.
Step (8):
Aluminium silicon 12 alloy seamless flux-cored wire step (7) prepared is machined to Φ 1.0mm through drawing procedure, and method is as follows:
A) drawing equipment and mould:
Large Storage Tank drawing machine: MODEL-560-1 type wire drawing machine;
Little Storage Tank drawing machine: C732 type vertical rotary cylinder wire drawing machine
Bar pointer and hot candied annealing furnace;
Wire-drawing die: sintered carbide die;
B) aluminium silicon 12 alloy flux-cored wire step (7) prepared loads in annealing furnace, 420 DEG C, is incubated cold with stove after 3 hours, is cold working to required finished size.
Embodiment 2
Step (1)
Choosing length is 40mm, and width is 40mm, and the high aluminium sheet of thick 2mm is base material, does spreadability test to aluminium silicon flux-cored wire prepared by embodiment 1.Use the heating of conventional, electric-resistance stove, design temperature is 530 DEG C, and the reaction time is 40s, and material is no more than 2min from entering stove to coming out of the stove, and eachly sprawls test and chooses aluminium silicon flux-cored wire 0.1g.Be average 4cm to spreading area planimeter measurement result
2.
Step (2)
Choosing length is 150mm, width is 30mm, the high aluminium sheet of thick 2mm is riser, length is 150mm, and width is 40mm, and the high aluminium sheet of thick 2mm is base plate, clearance fillability test is done to aluminium silicon flux-cored wire, one end of riser and base plate gap are 1mm, and orthogonal, and aluminium silicon flux-cored wire 0.75g is got in each experiment.Through measuring, joint filling length average out to 13.13cm.
Step (3)
Choosing length is 100mm, and width is 20mm, and 6063 aluminum alloy plate materials of thick 3mm are mother metal, adopts the method for gas brazing, docks between two respectively and overlap sample preparation to mother metal, the welding performance of research aluminium silicon flux-cored wire.Under stretching-machine test, the tensile strength average out to 114Mpa of aluminium silicon 12 flux-cored wire, shear strength average out to 21.83Mpa.
Claims (5)
1. the soldering method of alusil alloy seamless flux-cored wire, flux-cored wire adopts alusil alloy as crust, and medicine core is scaling powder; The siliceous mass percentage that consists of of alusil alloy crust is 4-15%, and surplus is aluminium and inevitable impurity, it is characterized in that, comprises the following steps:
(1) be 30% prepare alusil alloy, 99.999% rafifinal of weighing, 99.999% monocrystalline silicon by silicon content; Use intermediate frequency furnace heats, heat up add aluminium ingot in graphite clay crucible after, by after monocrystalline silicon fragmentation after aluminium ingot is melted, add in batches, with bell jar, silicon is pressed into aluminium liquid, the silicon added in aluminium liquid dissolves very fierce, after silicon is all melting down, ingot casting, the cast temperature of alloy is 720-750 DEG C;
(2) alusil alloy that silicon content is 4-15% is prepared, to weigh 99.999% rafifinal, ready aluminium is loaded in graphite crucible, heat up, treat that aluminium all melts and follow-up continuing be warming up to 750 DEG C, be pressed in aluminium liquid with graphite rod after adding AlSi30 intermediate alloy prepared by step (1), heat fused, liquation is stirred to accelerate the fusing of intermediate alloy at any time with graphite rod, silicon is evenly distributed in aluminium liquid, with the degassed refining of refining agent, again fully stir after refining agent reaction stops, leave standstill a moment, with graphite flake, bath surface oxidizing slag is taken off totally, charge-temperature pours into when reaching 700-750 DEG C in water-cooling casting iron rod mould and obtains alusil alloy bar,
(3) alusil alloy extruding, rolling and annealing operation;
The alusil alloy bar that step (2) obtains is placed in extrusion die and loads annealing furnace, and arranging heating-up temperature is 380 DEG C-420 DEG C, is incubated 3 hours, start extruding, extrusion temperature is 380 DEG C-420 DEG C, and speed is 10mm/s, and after pressure, thickness of strip is 5-8mm;
By the above-mentioned alusil alloy band homogenizing annealing in the lehr squeezed out, annealing temperature is 400-440 DEG C, be incubated and carry out hot rolling cogging rolling after 3 hours, in split rolling method, the temperature of material is 420 DEG C, returned in heating furnace by alloy after rolling 2-3 passage and heat, temperature is 420 DEG C, is incubated at least after 30min, continue split rolling method, such repeat-rolling proceeds to intermediate rolling to thickness 3-4mm;
Intermediate rolling is that annealing temperature is 400-440 DEG C, is incubated 1 hour, is rolling to thickness 0.6-1mm, proceeds to finished product rolling after cold with stove;
Loaded by thickness 0.6-1mm alusil alloy band in box-annealing furnace, after 400-440 DEG C of insulations are cold with stove after 3 hours, carrying out being cold working to thickness is 0.4-0.5mm;
(4) alusil alloy seamless flux-cored wire moulding process
The band of selecting step (3) is original material, while band is healed up into the cored rod of o shape section via the pressure roller rolling of different size, medicine core powder is coated in welding rod, prepares the seamless flux-cored wire blank of diameter range at Φ 3.8-4.4mm;
(5) drawing process of seamless flux-cored wire
Loaded by step (4) flux-cored wire blank in annealing furnace, 400-440 DEG C of insulations are cold with stove after 3 hours, and carry out drawing procedure, cold drawing is to Φ 1.0mm or more size.
2. according to the soldering method of alusil alloy seamless flux-cored wire of claim 1, it is characterized in that, in step (3), step (2) is placed in extrusion die and loads annealing furnace, arranging heating-up temperature is 400 DEG C, be incubated 3 hours, start extruding, extrusion temperature is 400 DEG C;
By the above-mentioned alusil alloy band homogenizing annealing in the lehr squeezed out, annealing temperature is 420 DEG C, be incubated and carry out hot rolling cogging rolling after 3 hours, in split rolling method, the temperature of material is 420 DEG C, returned in heating furnace by alloy after rolling 2-3 passage and heat, temperature is 420 DEG C, is incubated at least after 30min, continue split rolling method, such repeat-rolling proceeds to intermediate rolling to thickness 3.5mm;
Intermediate rolling is annealing temperature is 420 DEG C, is incubated 1 hour, is rolling to thickness 0.8mm, proceeds to finished product rolling after cold with stove;
Loaded in box-annealing furnace by thickness 0.8mm alusil alloy band, 420 DEG C of insulations are with after stove after 3 hours, and carrying out being cold working to thickness is 0.5mm.
3. according to the soldering method of alusil alloy seamless flux-cored wire of claim 1, it is characterized in that, step (4) flux-cored wire blank diameter is Φ 4.2mm.
4. according to the soldering method of alusil alloy seamless flux-cored wire of claim 1, it is characterized in that, be load in annealing furnace by step (4) flux-cored wire blank in step (5), 420 DEG C of insulations are cold with stove after 3 hours, carry out drawing procedure, cold drawing is to Φ 1.0mm.
5. according to the soldering method of alusil alloy seamless flux-cored wire of claim 1, it is characterized in that, medicine core is potassium fluoroaluminate, and its fusing point is 510 DEG C-530 DEG C.
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| US11426821B2 (en) | 2015-02-25 | 2022-08-30 | Hobart Brothers Llc | Aluminum metal-cored welding wire |
| CN105014259A (en) * | 2015-07-13 | 2015-11-04 | 江西金世纪特种焊接材料有限公司 | Seamless flux-cored wire and processing method thereof |
| CN105269182B (en) * | 2015-11-25 | 2017-09-15 | 天津航空机电有限公司 | The solder brazing method and flux-cored wire of a kind of small overlapping area |
| CN106624472B (en) * | 2017-01-12 | 2019-02-01 | 中国航空工业集团公司北京航空材料研究院 | A method of aluminium alloy flux-cored wire is manufactured using canned powder extrution method for producing unfired clay ware blank |
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