CN106077994A - Soldering magnesium-rare earth solder and preparation method and soldering processes - Google Patents
Soldering magnesium-rare earth solder and preparation method and soldering processes Download PDFInfo
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- CN106077994A CN106077994A CN201610415236.0A CN201610415236A CN106077994A CN 106077994 A CN106077994 A CN 106077994A CN 201610415236 A CN201610415236 A CN 201610415236A CN 106077994 A CN106077994 A CN 106077994A
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- rare earth
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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
- B23K35/28—Selection of soldering or welding materials proper with the principal constituent melting at less than 950 degrees C
- B23K35/284—Mg 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
-
- 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
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- Mechanical Engineering (AREA)
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- Pressure Welding/Diffusion-Bonding (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
Abstract
The invention discloses a kind of soldering magnesium-rare earth solder and preparation method and soldering processes, this soldering magnesium-rare earth solder elemental composition by weight percentage includes: 13% 19%Zn, 1.0% 3.0%Ni, 1.8% 4.4%Al, 0.4% 1.0%Ti, 5.1% 7.0%Cu, 0.3% 0.8%Mn, 0.004% 0.01%La, 0.004% 0.01%Nd, surplus are Mg.The brazing temperature of magnesium alloy brazing filler metal of the present invention is at 420 DEG C 460 DEG C, and brazing filler metal melts moderate temperature, solder composition is uniform；Use magnesium alloy brazing filler metal paillon foil to may advantageously facilitate diffusion and the interfacial reaction of each alloying element in soldering connection procedure, improve solder at the wetting and spreading of magnesium-rare earth and gap filling, crystal grain thinning and reduce residual stress, improves the bond strength of joint.
Description
Technical field
The present invention relates to a kind of soldering magnesium-rare earth solder and preparation method and soldering processes, belong to soldering field.
Background technology
Magnesium and magnesium alloy are a kind of material (ρ=1.74g/cm the lightest in metal current structural material3), it has density
Low, specific strength is high, damping property good, electromagnetic wave shielding is good, electrical and thermal conductivity is good, processability is good, hot formability is good, easy to be recycled
Favor is extensively enjoyed etc. feature.Along with developing by leaps and bounds of new and high technology, for realizing the greens such as lightweight, low energy consumption, environment-friendly type
Road for development, the application to metal material there occurs significant change in the world, reduces the application of traditional metal materials, and with
Magnesium alloy is the light metal material sustainable growth of representative.Whole world researcher pays much attention to the research and development of magnesium alloy, by it
It is described as the green engineering environment-friendly materials of 21 century, as the grand strategy material of 21 century.Electronics, automobile, Aero-Space and
The fields such as defence and military have extremely important using value and vast potential for future development, therefore about the grinding of connection of magnesium alloy
Study carefully and the most increasingly paid attention to by every field researcher.
Soldering, as a kind of interconnection technique, can open up the application of magnesium alloy well.But business application at present
Magnesium alloy brazing filler metal kind considerably less.BMg-1, BMg-2a of the U.S. (test material association of the U.S. trade mark be respectively AZ92A,
AZ125A) being the most conventional magnesium alloy brazing filler metal, brazing temperature range is respectively 604 DEG C-616 DEG C and 582 DEG C-610 DEG C, soldering
Temperature is the highest, and the brazing flux melting temperature being equipped with the highest (more than 538 DEG C)；The MC3 standard magnesium alloy brazing filler metal of Japan, its composition
Being in close proximity to the BMg-1 of the U.S., the temperature range of this solder is 605 DEG C-615 DEG C, and brazing temperature is the most too high.Japan's research and development
In-Mg-Zn-Al solder, its brazing filler metal melts temperature range is 449 DEG C-490 DEG C, although reduces brazing temperature, but contains in solder
There is substantial amounts of noble metal In, greatly improve the cost of solder.Mg-Al-Zn solder starts to be applied to the magnesium conjunction of AZ system in recent years
The welding of gold, but the intensity of welding point need to improve further.
At present the performance of magnesium alloy brazing joint is the most relatively low, far below magnesium alloy substrate material performance (σ >
200MPa).201110000830.0 1 kinds of Al-Mg-Zn magnesium alloy brazing solder soldering AZ31B magnesium alloy gained solderings of the patent No.
Lap joint shearing strength is 23MPa-28MPa, and the tensile strength of banjo fixing butt jointing is 39MPa-44MPa；Application number
200910092578.3 1 kinds of magnesium alloy brazing solder soldering AZ31B magnesium alloys containing rare earth, soldering lap joint shearing strength
For 38MPa-39MPa, the tensile strength of banjo fixing butt jointing is 53MPa-62MPa；The one of the patent No. 201110205638.5 invention
Magnesium alloy containing rare earth element er, soldering magnesium alloy gained soldering lap joint shear strength is 40MPa-46MPa；Application number
200910092579.8 a Zn-Mg magnesium alloy brazing solder, the lap joint shearing strength of soldering AZ31B magnesium alloy is
38MPa-43MPa, the tensile strength of banjo fixing butt jointing is 52MPa-53MPa；Application number 200910092580.0 1 kinds closes for magnesium
Gold soldering Zn-Mg-Al solder, the lap joint shearing strength of soldering AZ31B magnesium alloy is 43MPa-45MPa, banjo fixing butt jointing
Tensile strength is 59MPa-62MPa；Application number 200910184467.5 Zinc-magnesium based brazing alloy soldering magnesium alloy gained connects
Head shearing strength is 53MPa-68MPa；Application number 200910184466.0 magnesium-based brazing filler metal alloy, soldering magnesium alloy gained soldering is taken
Connecing joint bending stiffness is 57MPa-70MPa.Therefore, the magnesium-based brazing filler metal being developed for magnesium alloy brazing is magnesium alloy brazing field
Urgent problem, especially develops one and is applicable to magnesium-rare earth soldering packing material, the corruption relatively low, anti-of its brazing temperature
The benefit performances such as erosion property is good, improve bulk strength and the heat resistance of magnesium-rare earth matrix material.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the present invention proposes a kind of soldering magnesium-rare earth pricker
Material and preparation method and soldering processes, solder intensity is high, heat resistance is preferable, brazing temperature at 420 DEG C-460 DEG C, brazing filler metal melts
Moderate temperature, solder composition is uniform.
Technical scheme: for solve above-mentioned technical problem, a kind of soldering magnesium-rare earth solder of the present invention, selected solder with
The elemental composition of percentage by weight meter includes: 13%-19%Zn, 1.0%-3.0%Ni, 1.8%-4.4%Al, 0.4%-
1.0%Ti, 5.1%-7.0%Cu, 0.3%-0.8%Mn, 0.004%-0.01%La, 0.004%-0.01%Nd, surplus are
Mg。
As preferably, described solder consists of the following components in percentage by weight: 14.5%-17.5%Zn, 1.6%-
2.8%Ni, 2.0%-4.0%Al, 0.4%-0.8%Ti, 5.4%-6.6%Cu, 0.4%-0.6%Mn, 0.004%-
0.006%La, 0.004%-0.006%Nd, surplus are Mg.
As preferably, described solder consists of the following components in percentage by weight: 16%Zn, 2.2%Ni, 3.0%Al,
0.6%Ti, 6.0%Cu, 0.5%Mn, 0.005%La, 0.005%Nd, surplus are Mg.·
As preferably, described solder is paillon foil banding, and thickness is 0.1-0.3mm.
The preparation method of a kind of above-mentioned soldering magnesium-rare earth solder, comprises the following steps:
1) weigh highly purified Zn, Al, Ni, Ti, Cu, Mn, La, Nd and Mg bulk by mass percentage and prepare mixture,
Put in the container added with acetone, at room temperature carry out ultrasonic cleaning 15-20min；
2) mixture after step 1 ultrasonic cleaning is dried at a temperature of 30-50 DEG C, obtain the mixture being dried；
3) mixture Zn, Al, Ni, Ti, Cu, Mn, La, Nd and Mg are loaded in proprietary quartz glass tube, be contained in and get rid of band
In the high-frequency induction heating circle of machine, and its nozzle is adjusted to 100-200 μm to copper roller surface spacing；
4) close fire door, use mechanical pump to be evacuated to 1.5 × 10-1Pa, then uses molecular pump pumping high vacuum, fine vacuum
Degree is not less than 9 × 10-4Pa, then cavity is full of high-purity Ar gas (purity > 99.99%) and, to 200-250mbar, enters whole cavity
Row protection；
5) open motor, make copper roller rotating speed us=30m/s-32m/s, is then turned on high frequency electric source, by quartz glass tube
Metal mixture high-frequency induction heating, to after complete molten homogeneous, is incubated superheated melt 5s-10s；
6) Ar gas air pressure is modulated P=20-40KPa, with high pressure argon gas, the superheated melt in quartz glass is sprayed continuously
To the cooling copper roller surface of high speed rotating, liquid metal is formed foil shape by chilling, thus obtains chilling solder foil strip.
As preferably, in described step 3, quartz ampoule nozzle is rectangle, its a length of 8-10mm, and width is 0.8-
1.2mm。
As preferably, in described step 6, copper roller diameter is 250mm, and copper roller width is 50mm.
The soldering processes of a kind of above-mentioned soldering magnesium-rare earth solder, comprise the following steps:
(1) preparatory stage: magnesium-rare earth surface to be welded to be brazed is cleared up, remove the impurity on surface, greasy dirt with
And oxide-film, utilize W28-W3.5 abrasive paper for metallograph to be ground smooth, magnesium-rare earth and solder paillon foil are placed in third together
In ketone, use ultrasonic waves for cleaning 15-20min, and carry out drying and processing；
(2) assembling stage: the solder paillon foil after cleaning is placed between magnesium-rare earth welding surface, at interface to be connected
Around add magnesium-rare earth brazing flux, and be close to be assemblied in special brazing jig, it is ensured that the precision of connection, fixture is placed
The pressure head of nominal-mass, produces the constant perpendicular pressure of 0.02MPa-0.04MPa；
(3) soldering access phase: the fixture assembled is integrally placed in high-frequency induction resistance furnace equipment, is filled with argon and enters
Row protection, Ar throughput is 1.0L/min-1.5L/min, and heating rate is 20 DEG C-30 DEG C/min, brazing temperature is 420 DEG C-
460 DEG C, temperature retention time 10min-15min, it is cooled to room temperature, takes out by weldering connector.
As preferably, described step (2) middle rare earth magnesium alloy brazing flux each constituent mass degree is as follows: 2.0%
ZnF2, 16%ZnCl2, 4.0%NaF, 4.5%LiF, 10%CdCl2, 26%LiCl, 37.5%KCl.
Beneficial effect: compared with prior art, the invention have the advantages that
(1) brazing temperature of magnesium alloy brazing filler metal of the present invention is at 420 DEG C-460 DEG C, brazing filler metal melts moderate temperature, solder composition
Uniformly；Use magnesium alloy brazing filler metal paillon foil to may advantageously facilitate diffusion and the interfacial reaction of each alloying element in soldering connection procedure, carry
High solder at the wetting and spreading of magnesium-rare earth and gap filling, crystal grain thinning and reduce residual stress, improve joint
Bond strength；
(2) soldering processes that the solder using the present invention connects magnesium-rare earth are reliable and stable, utilize induction brazing, flame
Soldering and resistance brazing connect, and component is the phenomenon such as non-oxidation, softening and burning in heating process, and whole component is without deformation, nothing
Microfissure, pore and the defect such as be mingled with, its moistened surface is sprawled preferably, is sufficient filling with brazed seam, improve joint overall even
Connect intensity, and have good plastic deformation ability, thus more stable reliable soldered fitting can be obtained；
(3) solder of the present invention connects magnesium alloy, and solder and matrix mother metal are sufficiently formed solid solution metallurgical reaction, tissue particle,
Fill uniformly, embody the excellent switching performance of solder of the present invention, there is stronger bond strength, the application neck of magnesium alloy
Territory；
(4) present invention obtains magnesium alloy brazing filler metal preparation method and soldering processes are simple, implement convenient and swift, and composition is prone to
Controlling, impurity is few, is suitable for the batch production of high-quality brazing filler metal alloy, the preparation of solder and the repeatable reproduction of soldering processes, it is simple to
Promote widely and apply.
Detailed description of the invention
Below in conjunction with specific embodiment, technical solution of the present invention is further elaborated, but the present invention not only office
It is limited to following example.
Embodiment 1
Composition and the mass percent proportioning of solder be: Zn14.5, Ni2.8%, Al2.0%, Ti0.8%, Cu5.4%,
Mn0.6%, La0.004%, Nd0.006%, Mg73.89%.
The preparation method of above-mentioned a kind of soldering magnesium-rare earth solder, comprises the following steps:
1) weigh highly purified Zn, Al, Ni, Ti, Cu, Mn, La, Nd and Mg bulk by mass percentage and prepare mixture,
Put in the container added with acetone, at room temperature carry out ultrasonic cleaning 20min；
2) mixture after step 1 ultrasonic cleaning is dried at a temperature of 30 DEG C, obtain the mixture being dried；
3) mixture Zn, Al, Ni, Ti, Cu, Mn, La, Nd and Mg are loaded in proprietary quartz glass tube, be contained in and get rid of band
In the high-frequency induction heating circle of machine, and its nozzle is adjusted to 0.2mm to copper roller surface spacing；
4) close fire door, use mechanical pump to be evacuated to 1.5 × 10-1Pa, then uses molecular pump pumping high vacuum, fine vacuum
Degree is not less than 9 × 10-4Pa, then cavity is full of high-purity Ar gas (purity > 99.99%) and, to 200mbar, protects whole cavity
Protect；
5) open motor, make copper roller rotating speed us=31m/s, is then turned on high frequency electric source, is mixed by the metal in quartz glass tube
Compound high-frequency induction heating, to after complete molten homogeneous, is incubated superheated melt 8s；
6) Ar gas air pressure is modulated P=30KPa, with high pressure argon gas, the superheated melt in quartz glass is ejected into height continuously
The cooling copper roller surface that speed rotates, liquid metal is formed foil shape by chilling, thus obtains chilling solder foil strip, and thickness is
0.3mm。
Magnesium-rare earth (Nd0.010%, Ce0.264%, Mn1.74%, Pb0.014%, Ni0.003%,
Zn0.004%, Sn0.004%, Si0.028%, La0.002%, surplus are Mg) banjo fixing butt jointing high-frequency induction resistance brazing, examination
Sample ruler cun is 20mm × 20mm × 6mm, and to be brazed is 20mm × 6mm cross section.
Brazing flux each constituent mass per distribution ratio: 2.0%ZnF2, 16%ZnCl2, 4.0%NaF, 4.5%LiF, 10%
CdCl2, 26%LiCl, 37.5%KCl.
The soldering processes of a kind of soldering magnesium-rare earth solder, comprise the following steps:
(1) preparatory stage: magnesium-rare earth surface to be welded to be brazed is cleared up, remove the impurity on surface, greasy dirt with
And oxide-film, utilize W28-W3.5 abrasive paper for metallograph to be ground smooth, magnesium-rare earth and solder paillon foil are placed in third together
In ketone, use ultrasonic waves for cleaning 20min, and carry out drying and processing；
(2) assembling stage: the solder paillon foil after cleaning is placed between magnesium-rare earth welding surface, at interface to be connected
Around add magnesium-rare earth brazing flux, and be close to be assemblied in special brazing jig, it is ensured that the precision of connection, fixture is placed
The pressure head of nominal-mass, produces the constant perpendicular pressure of 0.04MPa；
(3) soldering access phase: the fixture assembled is integrally placed in high-frequency induction resistance furnace equipment, is filled with argon and enters
Row protection, Ar throughput is 1.5L/min, and heating rate is 30 DEG C/min, and brazing temperature is 460 DEG C, and temperature retention time 10min is cold
But to room temperature, take out by weldering connector.
Result: the magnesium-rare earth jointing that soldering obtains is formed well, metallographic observation finds that brazing area forms densification
Interface cohesion, alloying component is evenly distributed, and room temperature shear strength is 121MPa.
Embodiment 2:
Composition and the mass percent proportioning of solder be: Zn16%, Ni2.2%, Al3.0%, Ti0.6%, Cu6.0%,
Mn0.5%, La0.005%, Nd0.005%, Mg71.69%.
The preparation method of above-mentioned a kind of soldering magnesium-rare earth solder, comprises the following steps:
1) weigh highly purified Zn, Al, Ni, Ti, Cu, Mn, La, Nd and Mg bulk by mass percentage and prepare mixture,
Put in the container added with acetone, at room temperature carry out ultrasonic cleaning 15min；
2) mixture after step 1 ultrasonic cleaning is dried at a temperature of 40 DEG C, obtain the mixture being dried；
3) mixture Zn, Al, Ni, Ti, Cu, Mn, La, Nd and Mg are loaded in proprietary quartz glass tube, be contained in and get rid of band
In the high-frequency induction heating circle of machine, and its nozzle is adjusted to 0.1mm to copper roller surface spacing；
4) close fire door, use mechanical pump to be evacuated to 1.5 × 10-1Pa, then uses molecular pump pumping high vacuum, fine vacuum
Degree is not less than 9 × 10-4Pa, then cavity is full of high-purity Ar gas (purity > 99.99%) and, to 250mbar, protects whole cavity
Protect；
5) open motor, make copper roller rotating speed us=31m/s, is then turned on high frequency electric source, is mixed by the metal in quartz glass tube
Compound high-frequency induction heating, to after complete molten homogeneous, is incubated superheated melt 8s；
6) Ar gas air pressure is modulated P=20KPa, with high pressure argon gas, the superheated melt in quartz glass is ejected into height continuously
The cooling copper roller surface that speed rotates, liquid metal is formed foil shape by chilling, thus obtains chilling solder foil strip, and thickness is
0.2mm。
Magnesium-rare earth (Nd0.010%, Ce0.264%, Mn1.74%, Pb0.014%, Ni0.003%,
Zn0.004%, Sn0.004%, Si0.028%, La0.002%, surplus are Mg) banjo fixing butt jointing high-frequency induction resistance brazing, examination
Sample ruler cun is 20mm × 20mm × 6mm, and to be brazed is 20mm × 6mm cross section.
Brazing flux each constituent mass per distribution ratio: 2.0%ZnF2, 16%ZnCl2, 4.0%NaF, 4.5%LiF, 10%
CdCl2, 26%LiCl, 37.5%KCl.
The soldering processes of a kind of soldering magnesium-rare earth solder, comprise the following steps:
(1) preparatory stage: magnesium-rare earth surface to be welded to be brazed is cleared up, remove the impurity on surface, greasy dirt with
And oxide-film, utilize W28-W3.5 abrasive paper for metallograph to be ground smooth, magnesium-rare earth and solder paillon foil are placed in third together
In ketone, use ultrasonic waves for cleaning 20min, and carry out drying and processing；
(2) assembling stage: the solder paillon foil after cleaning is placed between magnesium-rare earth welding surface, at interface to be connected
Around add magnesium-rare earth brazing flux, and be close to be assemblied in special brazing jig, it is ensured that the precision of connection, fixture is placed
The pressure head of nominal-mass, produces the constant perpendicular pressure of 0.03MPa；
(3) soldering access phase: the fixture assembled is integrally placed in high-frequency induction resistance furnace equipment, is filled with argon and enters
Row protection, Ar throughput is 1.0L/min, and heating rate is 25 DEG C/min, and brazing temperature is 440 DEG C, and temperature retention time 10min is cold
But to room temperature, take out by weldering connector.
Result: the magnesium-rare earth jointing that soldering obtains is formed well, metallographic observation finds that brazing area forms densification
Interface cohesion, alloying component is evenly distributed, and room temperature shear strength is 129MPa.
Embodiment 3:
Composition and the mass percent proportioning of solder be: Zn17.5%, Ni1.6%, Al4.0%, Ti0.4%,
Cu6.6%, Mn0.4%, La0.006%, Nd0.004%, Mg69.49%.
The preparation method of above-mentioned a kind of soldering magnesium-rare earth solder, comprises the following steps:
1) weigh highly purified Zn, Al, Ni, Ti, Cu, Mn, La, Nd and Mg bulk by mass percentage and prepare mixture,
Put in the container added with acetone, at room temperature carry out ultrasonic cleaning 20min；
2) mixture after step 1 ultrasonic cleaning is dried at a temperature of 50 DEG C, obtain the mixture being dried；
3) mixture Zn, Al, Ni, Ti, Cu, Mn, La, Nd and Mg are loaded in proprietary quartz glass tube, be contained in and get rid of band
In the high-frequency induction heating circle of machine, and its nozzle is adjusted to 0.1mm to copper roller surface spacing；
4) close fire door, use mechanical pump to be evacuated to 1.5 × 10-1Pa, then uses molecular pump pumping high vacuum, fine vacuum
Degree is not less than 9 × 10-4Pa, then cavity is full of high-purity Ar gas (purity > 99.99%) and, to 200mbar, protects whole cavity
Protect；
5) open motor, make copper roller rotating speed us=31m/s, is then turned on high frequency electric source, is mixed by the metal in quartz glass tube
Compound high-frequency induction heating, to after complete molten homogeneous, is incubated superheated melt 8s；
6) Ar gas air pressure is modulated P=40KPa, with high pressure argon gas, the superheated melt in quartz glass is ejected into height continuously
The cooling copper roller surface that speed rotates, liquid metal is formed foil shape by chilling, thus obtains chilling solder foil strip, and thickness is
0.1mm。
Magnesium-rare earth (Nd0.010%, Ce0.264%, Mn1.74%, Pb0.014%, Ni0.003%,
Zn0.004%, Sn0.004%, Si0.028%, La0.002%, surplus are Mg) banjo fixing butt jointing high-frequency induction resistance brazing, examination
Sample ruler cun is 20mm × 20mm × 6mm, and to be brazed is 20mm × 6mm cross section.
Brazing flux each constituent mass per distribution ratio: 2.0%ZnF2, 16%ZnCl2, 4.0%NaF, 4.5%LiF, 10%
CdCl2, 26%LiCl, 37.5%KCl.
The soldering processes of a kind of soldering magnesium-rare earth solder, comprise the following steps:
(1) preparatory stage: magnesium-rare earth surface to be welded to be brazed is cleared up, remove the impurity on surface, greasy dirt with
And oxide-film, utilize W28-W3.5 abrasive paper for metallograph to be ground smooth, magnesium-rare earth and solder paillon foil are placed in third together
In ketone, use ultrasonic waves for cleaning 20min, and carry out drying and processing；
(2) assembling stage: the solder paillon foil after cleaning is placed between magnesium-rare earth welding surface, at interface to be connected
Around add magnesium-rare earth brazing flux, and be close to be assemblied in special brazing jig, it is ensured that the precision of connection, fixture is placed
The pressure head of nominal-mass, produces the constant perpendicular pressure of 0.02MPa；
(3) soldering access phase: the fixture assembled is integrally placed in high-frequency induction resistance furnace equipment, is filled with argon and enters
Row protection, Ar throughput is 1.5L/min, and heating rate is 20 DEG C/min, and brazing temperature is 420 DEG C, and temperature retention time 15min is cold
But to room temperature, take out by weldering connector.
Result: the magnesium-rare earth jointing that soldering obtains is formed well, metallographic observation finds that brazing area forms densification
Interface cohesion, alloying component is evenly distributed, and room temperature shear strength is 115MPa.
Embodiment 4:
Composition and the mass percent proportioning of solder be: Zn13%, Ni1.0%, Al4.4%, Ti1.0%, Cu5.1%,
Mn0.3%, La0.008%, Nd0.008%, Mg75.184%.
The preparation method of above-mentioned a kind of soldering magnesium-rare earth solder, comprises the following steps:
1) weigh highly purified Zn, Al, Ni, Ti, Cu, Mn, La, Nd and Mg bulk by mass percentage and prepare mixture,
Put in the container added with acetone, at room temperature carry out ultrasonic cleaning 18min；
2) mixture after step 1 ultrasonic cleaning is dried at a temperature of 40 DEG C, obtain the mixture being dried；
3) mixture Zn, Al, Ni, Ti, Cu, Mn, La, Nd and Mg are loaded in proprietary quartz glass tube, be contained in and get rid of band
In the high-frequency induction heating circle of machine, and its nozzle is adjusted to 0.15mm to copper roller surface spacing；
4) close fire door, use mechanical pump to be evacuated to 1.5 × 10-1Pa, then uses molecular pump pumping high vacuum, fine vacuum
Degree is not less than 9 × 10-4Pa, then cavity is full of high-purity Ar gas (purity > 99.99%) and, to 200mbar, protects whole cavity
Protect；
5) open motor, make copper roller rotating speed us=31m/s, is then turned on high frequency electric source, is mixed by the metal in quartz glass tube
Compound high-frequency induction heating, to after complete molten homogeneous, is incubated superheated melt 8s；
6) Ar gas air pressure is modulated P=30KPa, with high pressure argon gas, the superheated melt in quartz glass is ejected into height continuously
The cooling copper roller surface that speed rotates, liquid metal is formed foil shape by chilling, thus obtains chilling solder foil strip, and thickness is
0.1mm。
Magnesium-rare earth (Nd0.010%, Ce0.264%, Mn1.74%, Pb0.014%, Ni0.003%,
Zn0.004%, Sn0.004%, Si0.028%, La0.002%, surplus are Mg) banjo fixing butt jointing high-frequency induction resistance brazing, examination
Sample ruler cun is 20mm × 20mm × 6mm, and to be brazed is 20mm × 6mm cross section.
Brazing flux each constituent mass per distribution ratio: 2.0%ZnF2, 16%ZnCl2, 4.0%NaF, 4.5%LiF, 10%
CdCl2, 26%LiCl, 37.5%KCl.
The soldering processes of a kind of soldering magnesium-rare earth solder, comprise the following steps:
(1) preparatory stage: magnesium-rare earth surface to be welded to be brazed is cleared up, remove the impurity on surface, greasy dirt with
And oxide-film, utilize W28-W3.5 abrasive paper for metallograph to be ground smooth, magnesium-rare earth and solder paillon foil are placed in third together
In ketone, use ultrasonic waves for cleaning 20min, and carry out drying and processing；
(2) assembling stage: the solder paillon foil after cleaning is placed between magnesium-rare earth welding surface, at interface to be connected
Around add magnesium-rare earth brazing flux, and be close to be assemblied in special brazing jig, it is ensured that the precision of connection, fixture is placed
The pressure head of nominal-mass, produces the constant perpendicular pressure of 0.02MPa；
(3) soldering access phase: the fixture assembled is integrally placed in high-frequency induction resistance furnace equipment, is filled with argon and enters
Row protection, Ar throughput is 1.5L/min, and heating rate is 20 DEG C/min, and brazing temperature is 420 DEG C, and temperature retention time 15min is cold
But to room temperature, take out by weldering connector.
Result: the magnesium-rare earth jointing that soldering obtains is formed well, metallographic observation finds that brazing area forms densification
Interface cohesion, alloying component is evenly distributed, and room temperature shear strength is 119MPa.
Embodiment 5:
Composition and the mass percent proportioning of solder be: Zn19%, Ni3.0%, Al1.8%, Ti0.9%, Cu7.0%,
Mn0.8%, La0.01%, Nd0.01%, Mg67.48%.
The preparation method of above-mentioned a kind of soldering magnesium-rare earth solder, comprises the following steps:
1) weigh highly purified Zn, Al, Ni, Ti, Cu, Mn, La, Nd and Mg bulk by mass percentage and prepare mixture,
Put in the container added with acetone, at room temperature carry out ultrasonic cleaning 15min；
2) mixture after step 1 ultrasonic cleaning is dried at a temperature of 40 DEG C, obtain the mixture being dried；
3) mixture Zn, Al, Ni, Ti, Cu, Mn, La, Nd and Mg are loaded in proprietary quartz glass tube, be contained in and get rid of band
In the high-frequency induction heating circle of machine, and its nozzle is adjusted to 0.1mm to copper roller surface spacing；
4) close fire door, use mechanical pump to be evacuated to 1.5 × 10-1Pa, then uses molecular pump pumping high vacuum, fine vacuum
Degree is not less than 9 × 10-4Pa, then cavity is full of high-purity Ar gas (purity > 99.99%) and, to 250mbar, protects whole cavity
Protect；
5) open motor, make copper roller rotating speed us=31m/s, is then turned on high frequency electric source, is mixed by the metal in quartz glass tube
Compound high-frequency induction heating, to after complete molten homogeneous, is incubated superheated melt 8s；
6) Ar gas air pressure is modulated P=20KPa, with high pressure argon gas, the superheated melt in quartz glass is ejected into height continuously
The cooling copper roller surface that speed rotates, liquid metal is formed foil shape by chilling, thus obtains chilling solder foil strip, and thickness is
0.2mm。
Magnesium-rare earth (Nd0.010%, Ce0.264%, Mn1.74%, Pb0.014%, Ni0.003%,
Zn0.004%, Sn0.004%, Si0.028%, La0.002%, surplus are Mg) banjo fixing butt jointing high-frequency induction resistance brazing, examination
Sample ruler cun is 20mm × 20mm × 6mm, and to be brazed is 20mm × 6mm cross section.
Brazing flux each constituent mass per distribution ratio: 2.0%ZnF2, 16%ZnCl2, 4.0%NaF, 4.5%LiF, 10%
CdCl2, 26%LiCl, 37.5%KCl.
The soldering processes of a kind of soldering magnesium-rare earth solder, comprise the following steps:
(1) preparatory stage: magnesium-rare earth surface to be welded to be brazed is cleared up, remove the impurity on surface, greasy dirt with
And oxide-film, utilize W28-W3.5 abrasive paper for metallograph to be ground smooth, magnesium-rare earth and solder paillon foil are placed in third together
In ketone, use ultrasonic waves for cleaning 20min, and carry out drying and processing；
(2) assembling stage: the solder paillon foil after cleaning is placed between magnesium-rare earth welding surface, at interface to be connected
Around add magnesium-rare earth brazing flux, and be close to be assemblied in special brazing jig, it is ensured that the precision of connection, fixture is placed
The pressure head of nominal-mass, produces the constant perpendicular pressure of 0.03MPa；
(3) soldering access phase: the fixture assembled is integrally placed in high-frequency induction resistance furnace equipment, is filled with argon and enters
Row protection, Ar throughput is 1.0L/min, and heating rate is 25 DEG C/min, and brazing temperature is 440 DEG C, and temperature retention time 10min is cold
But to room temperature, take out by weldering connector.
Result: the magnesium-rare earth jointing that soldering obtains is formed well, metallographic observation finds that brazing area forms densification
Interface cohesion, alloying component is evenly distributed, and room temperature shear strength is 124MPa.
The above is only the preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (9)
1. a soldering magnesium-rare earth solder, it is characterised in that: selected solder elemental composition by weight percentage includes:
13%-19%Zn, 1.0%-3.0%Ni, 1.8%-4.4%Al, 0.4%-1.0%Ti, 5.1%-7.0%Cu, 0.3%-
0.8%Mn, 0.004%-0.01%La, 0.004%-0.01%Nd, surplus are Mg.
Soldering magnesium-rare earth solder the most according to claim 1, it is characterised in that: described solder is by following weight percent
The component composition of ratio: 14.5%-17.5%Zn, 1.6%-2.8%Ni, 2.0%-4.0%Al, 0.4%-0.8%Ti, 5.4%-
6.6%Cu, 0.4%-0.6%Mn, 0.004%-0.006%La, 0.004%-0.006%Nd, surplus are Mg.
Soldering magnesium-rare earth solder the most according to claim 2, it is characterised in that: described solder is by following weight percent
Ratio component composition: 16%Zn, 2.2%Ni, 3.0%Al, 0.6%Ti, 6.0%Cu, 0.5%Mn, 0.005%La, 0.005%
Nd, surplus are Mg.
Soldering magnesium-rare earth solder the most according to claim 1, it is characterised in that: described solder is paillon foil banding, thick
Degree is 0.1-0.3mm.
5. the preparation method of the soldering magnesium-rare earth solder as described in Claims 1-4, it is characterised in that include with
Lower step:
1) weigh Zn, Al, Ni, Ti, Cu, Mn, La, Nd and Mg bulk by mass percentage and prepare mixture, put into added with acetone
Container in, at room temperature carry out ultrasonic cleaning 15-20min；
2) mixture after step 1 ultrasonic cleaning is dried at a temperature of 30-50 DEG C, obtain the mixture being dried；
3) mixture Zn, Al, Ni, Ti, Cu, Mn, La, Nd and Mg are loaded in quartz glass tube, be contained in the high frequency sense getting rid of band machine
Answer in heating collar, and its nozzle is adjusted to 100-200 μm to copper roller surface spacing；
4) close fire door, use mechanical pump to be evacuated to 1.5 × 10-1Pa, then uses molecular pump pumping high vacuum, and condition of high vacuum degree is not
Less than 9 × 10-4Pa, then cavity is full of Ar gas to 200-250mbar, protects whole cavity；
5) open motor, make copper roller rotating speed us=30m/s-32m/s, is then turned on high frequency electric source, is mixed by the metal in quartz glass tube
Compound high-frequency induction heating, to after complete molten homogeneous, is incubated superheated melt 5s-10s；
6) Ar gas air pressure is modulated P=20-40KPa, with high pressure argon gas, the superheated melt in quartz glass is ejected into height continuously
The cooling copper roller surface that speed rotates, liquid metal is formed foil shape by chilling, thus obtains chilling solder foil strip.
The preparation method of solder the most according to claim 5, it is characterised in that: in described step 3, quartz ampoule nozzle is length
Square, its a length of 8-10mm, width is 0.8-1.2mm.
The preparation method of solder the most according to claim 5, it is characterised in that: in described step 6, copper roller diameter is
250mm, copper roller width is 50mm.
8. the soldering processes of the soldering magnesium-rare earth solder as described in any one of claim 1-4, it is characterised in that bag
Include following steps:
(1) preparatory stage: magnesium-rare earth surface to be welded to be brazed is cleared up, the impurity on surface, greasy dirt and oxygen are removed
Change film, utilize W28-W3.5 abrasive paper for metallograph to be ground smooth, magnesium-rare earth and solder paillon foil are placed in acetone together
In, use ultrasonic waves for cleaning 15-20min, and carry out drying and processing；
(2) assembling stage: the solder paillon foil after cleaning is placed between magnesium-rare earth welding surface, around interface to be connected
Add magnesium-rare earth brazing flux, and be close to be assemblied in special brazing jig, it is ensured that the precision of connection, fixture is placed specified
The pressure head of quality, produces the constant perpendicular pressure of 0.02MPa-0.04MPa；
(3) soldering access phase: the fixture assembled is integrally placed in high-frequency induction resistance furnace equipment, is filled with argon and protects
Protecting, Ar throughput is 1.0L/min-1.5L/min, and heating rate is 20 DEG C-30 DEG C/min, and brazing temperature is 420 DEG C-460 DEG C,
Temperature retention time 10min-15min, is cooled to room temperature, takes out by weldering connector.
The soldering processes of soldering magnesium-rare earth solder the most according to claim 8, it is characterised in that: described step (2)
Middle rare earth magnesium alloy brazing flux each constituent mass degree is as follows: 2.0%ZnF2, 16%ZnCl2, 4.0%NaF, 4.5%
LiF, 10%CdCl2, 26%LiCl, 37.5%KCl.
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| CN113414461A (en) * | 2021-08-23 | 2021-09-21 | 西安远航真空钎焊技术有限公司 | Brazing method of core body switching section assembly |
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