CN104439590A - Brazing technique for 6061 aluminum alloy and AZ31B magnesium alloy - Google Patents
Brazing technique for 6061 aluminum alloy and AZ31B magnesium alloy Download PDFInfo
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- CN104439590A CN104439590A CN201410625825.2A CN201410625825A CN104439590A CN 104439590 A CN104439590 A CN 104439590A CN 201410625825 A CN201410625825 A CN 201410625825A CN 104439590 A CN104439590 A CN 104439590A
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- magnesium alloy
- alloy
- aluminum alloy
- brazing
- filler metal
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Classifications
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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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/0004—Resistance soldering
-
- 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
- B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
-
- 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
- B23K1/206—Cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/18—Dissimilar materials
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Ceramic Products (AREA)
- Arc Welding In General (AREA)
Abstract
The invention relates to a brazing technique for 6061 aluminum alloy and AZ31B magnesium alloy and belongs to the brazing techniques of aluminum and magnesium alloy. The brazing technique comprises the steps that aluminum alloy passing raw material inspection, magnesium alloy passing raw material inspection and Zn-12Cd flake brazing filler metal passing raw material inspection are prepared, an oxidation layer on the surface of the 6061 aluminum alloy, an oxidation layer on the surface of the AZ31B magnesium alloy and an oxidation layer on the surface of the brazing filler metal are removed through abrasive paper, then the two faces of the brazing filler metal, the face, sanded by the abrasive paper, of the aluminum alloy and the surface, sanded by the abrasive payer, of the magnesium alloy are cleaned with alcohol, the brazing filler metal is arranged between the aluminum alloy and the magnesium alloy, the brazing filler metal, the aluminum alloy and the magnesium alloy are fixed through a clamp and put in a KTF series pipe type vacuum atmosphere resistance furnace, the heating speed is set as 6 DEG C-10 DEG C/min, heating is conducted until the temperature reaches 310 DEG C-335 DEG C, then the heating speed is set as 2 DEG C-8 DEG C/min, heating is conducted until the temperature reaches 365 DEG C-390 DEG C, heat preservation is conducted for 40 min-70 min, the temperature is reduced to 260 degrees, heat preservation is conducted for 30 min, and the razing filler metal, the aluminum alloy and the magnesium alloy are cooled to the room temperature along with the furnace, and a brazed part is obtained. The brazing technique for the 6061 aluminum alloy and the AZ31B magnesium alloy is low in operation cost and easy to achieve, the obtained brazed connector is excellent in performance, and the application field of the magnetism alloy and the aluminum alloy is enlarged.
Description
Technical field
The present invention relates to a kind of soldering processes of Al alloys andMg alloys, particularly the soldering processes of a kind of 6061 aluminium alloys and AZ31B magnesium alloy.
Background technology
Along with the development of industrial technology, more and more higher to the performance requirement of automobile, aircraft, reduce construction weight to become and proposes high performance important measures, magnesium alloy and aluminium alloy have that density is low, specific strength is high, specific rigidity advantages of higher, are that best aircraft, automobile, boats and ships are isostructural.But the popularity applied due to magnesium alloy and aluminium alloy and intercrossing, and in the requirement of some occasion to its property, magnesium, Aluminum-aluminum alloy are connected to form composite construction and just seem very necessary, so both can reduce construction weight, and can material be saved again.Particularly aluminum current alloy has obtained applying comparatively widely, and magnesium alloy will relate to the connection with aluminium alloy in the application as structural material.
Soldering uses to make solder than the low-melting metal material of workpiece, by workpiece and solder heat to higher than solder fusing point, temperature lower than workpiece fusing point, utilize liquid solder wetted workpieces, fill interface gaps and realize interatomic phase counterdiffusion with workpiece, thus realize the method for welding.Soldering comprises solder and solder brazing, and the temperature due to solder is no more than 450 DEG C, and parent metal is non-fusible, does not produce interfacial reaction, avoids high-temperature heating to the impact being connected material.Solder brazing comprises protective atmosphere furnace brazing, vacuum brazing, resistance brazing, dip brazing and eutectic reaction brazing.
Put in method in welding used, only have soldering to can be used for large-area disposable welding fabrication, its welding method is also simple to operation simultaneously, is used in material surface welding dissimilar metal to improve the mechanical property of material surface.Because the oxide-film of magnesium alloy and aluminium alloy is serious, the selection of brazing flux is important problem.And magnesium alloy is perishable, till now, the dissimilar metal magnesium alloy of brazing flux and the research of aluminium alloy is adopted still not to report.
The people such as the Wielage B. of Chemnitz polytechnical university of Germany use the MgAlZn solder of heterogeneity ratio to carry out ultrasonic assistant brazing to magnesium/aluminum dissimilar metal.Result shows: joint has one deck magnesium based solid solution transition zone at interface, magnesium matrix side, then defines one deck Mg on aluminium base side
17al
12, connector area is made up of magnesium sosoloid and binary and Ternary intermetallic compounds.
The people such as Liu Liming adopt economically viable zinc-based solder brazing AZ31B magnesium alloy and 6061 aluminium alloy plates, and shearing strength of joint is 45MPa, does not produce magnesium aluminium intermetallic compound in joint.Magnesium matrix and contiguous brazing area link together by the conversion zone that Fu Xinqu and Pin Mei district intersection is formed, and only have a small amount of MgZn in conversion zone
2intermetallic compound, butt joint performance impact is little.Be the AlZn solid solution that one deck is very thin between aluminum substrate and brazing area, effectively prevent the generation of magnesium aluminium intermetallic compound by the method.
Dalian University of Technology Tan Jin is red waits people with magnesium alloy (AZ31) and aluminium alloy (6061) contact reaction brazing for research object, adopt Zn can obtain good joint performance as solder, due to the activity of magnesium and aluminium, to adopt in the process of contact reaction brazing welding magnesium alloy and aluminium alloy inevitably intermetallic compound.Interface Study result shows, under suitable process conditions, the thickness being added with control zinc layers of spelter solder layer can control the width of transitional region, and strength of joint improves.
Summary of the invention
Technical problem: the object of the invention is to provide that a kind of metal streamline tissue is good, uniform wall thickness and machinery, 6061 aluminium alloys of good mechanical properties and the soldering processes of AZ31B magnesium alloy.
Technical scheme: the object of the present invention is achieved like this, the soldering processes of this Al alloys andMg alloys adopt the heating of KTF series of tubular vacuum atmosphere resistance furnace to carry out soldering, prepare the magnalium dissimilar alloy welding component of excellent properties;
Concrete steps are as follows:
A. whether correctly first raw material quality certificate content is checked according to material standard; Then check raw-material presentation quality, raw material surface does not have lower column defects: pit or projection, ensures that face of weld is smooth, finally carries out the reinspection of chemical composition, mechanical performance, guarantee the quality of raw materials;
B. use sand paper by strict the grinding off of surface scale of 6061 aluminium alloys, AZ31B magnesium alloy and sheet solder Zn-12Cd, to improve the quality of welding;
C. the broken end clear water of each material surface after polishing is rinsed out, then use alcohol washes, oven dry;
D. sheet solder is placed between surface that aluminium alloy is polished and the surface that magnesium alloy is polished, be fixed with fixture, notice that the stressed of fixture is wanted evenly, size controls within the scope of 0.1Mpa ~ 0.2Mpa, between solder and aluminium alloy and all very close to each other between solder and magnesium alloy;
E. the weldment fixed is put into KTF series of tubular vacuum atmosphere resistance furnace, setting firing rate is 6 DEG C ~ 10 DEG C/min, be heated to 310 DEG C ~ 335 DEG C always, and then to set firing rate be 2 DEG C ~ 8 DEG C/min, be heated to 365 DEG C ~ 390 DEG C, insulation 40min ~ 70min, is next cooled to 260 DEG C always, insulation 30min, finally can obtain weldment with stove cool to room temperature;
F. fall the oxide skin on weldment surface with sand papering, both can obtain perfect brazing member.
Beneficial effect: the present invention utilizes KTF series of tubular vacuum atmosphere resistance furnace to carry out soldering to aluminium alloy and magnesium alloy, this method for welding, expands the application of magnesium alloy and aluminium alloy.Metal streamline tissue is good, uniform wall thickness and machinery, good mechanical properties, also reduces the weight of material simultaneously.Postwelding can obtain high specific strength, is simultaneously also easy to machining, has high damping capacity and recovery utilization rate, is widely used in and requires on quality is light, mechanical property is good part, as: Aero-Space, automobile, electronics, the field such as civilian.
Advantage is as follows:
(1) adopt KTF series of tubular vacuum atmosphere resistance furnace to carry out soldering to 6061 aluminium alloys and AZ31B magnesium alloy, change the problem that traditional welding brings, this technique expands the application of aluminium alloy and magnesium alloy.
(2) adopt KTF series of tubular vacuum atmosphere resistance furnace to carry out soldering to aluminium alloy and magnesium alloy, manufacture craft is easy, shortens the production cycle, reduces energy consumption, has saved cost.
(3) weldment obtained by soldering is not only functional, and convenient operation, safety and stability.
(4) the magnalium different alloys weldment prepared, can not only meet the serviceability of most of component, and greatly reduce the weight of weldment, is so more conducive to being used in above Aero-Space and automotive electronics device.
Accompanying drawing explanation
Fig. 1 is sheet material welding result figure of the present invention.
Fig. 2 is pole stock welding result figure of the present invention.
Detailed description of the invention
The present invention utilizes KTF series of tubular vacuum atmosphere resistance furnace 6061 aluminium alloys and ZA31B magnesium alloy to be carried out to the welding procedure of soldering: adopt the heating of KTF series of tubular vacuum atmosphere resistance furnace to carry out soldering, prepare the magnalium dissimilar alloy welding component of excellent properties, concrete implementation step is as follows:
Embodiment: the aluminium alloy that this example adopts is 6061 reflectals, and magnesium alloy selects ZA31B magnesium alloy to test.
A. chemical quality percentage Mg (0.8% ~ 1.2%), Mn < 0.15%, Si (0.4% ~ 0.8%), Fe < 0.7%, Cu (0.15% ~ 0.4%), Cr (0.04% ~ 0.35%), other elements < 0.15% are contained to 6061 aluminium alloys, all the other are for Al.Chemical quality percentage Al (2.5% ~ 13.5%) is contained to AZ31B magnesium alloy, Zn (0.5% ~ 11.5%), Mn > 0.2%, Si < 0.1%, Fe < 0.03%, Cu < 0.1%, Ni < 0.005%, Ca < 0.04%, other elements < 0.3%, all the other are Mg, solder sheet Zn-12Cd solder, solder chemical quality percentage Cd (10% ~ 12%), Ag (5.2% ~ 6.4%), Cu (1% ~ 2.4%), all the other are Zn, whether correctly check raw material quality certificate content, then raw-material presentation quality is checked, finally carry out chemical composition, the reinspection of mechanical performance.
B. use sand paper by strict the grinding off of surface scale of 6061 aluminium alloys, AZ31B magnesium alloy and sheet solder Zn-12Cd, to improve the quality of welding;
C. the broken end clear water of each material surface after polishing is rinsed out, then use alcohol washes, oven dry;
D. sheet solder is placed between surface that aluminium alloy is polished and the surface that magnesium alloy is polished, be fixed with fixture, notice that the stressed of fixture is wanted evenly, size controls within the scope of 0.1Mpa ~ 0.2Mpa, between solder and aluminium alloy and all very close to each other between solder and magnesium alloy;
E. the weldment fixed is put into KTF series of tubular vacuum atmosphere resistance furnace, setting firing rate is 6 DEG C ~ 10 DEG C/min, be heated to 310 DEG C ~ 335 DEG C always, and then to set firing rate be 2 DEG C ~ 8 DEG C/min, be heated to 365 DEG C ~ 390 DEG C, insulation 40min ~ 70min, is next cooled to 260 DEG C always, insulation 30min, finally can obtain weldment with stove cool to room temperature;
F. fall the oxide skin on weldment surface with sand papering, both can obtain perfect brazing member;
G. the magnalium different alloys weldment of preparation like this, the technical indicator reached: soldering joint strength 69Mpa, microhardness is 160HV.
Claims (1)
1. soldering processes for 6061 aluminium alloys and ZA31B magnesium alloy, is characterized in that: the soldering processes of this Al alloys andMg alloys adopt the heating of KTF series of tubular vacuum atmosphere resistance furnace to carry out soldering, prepare the magnalium dissimilar alloy welding component of excellent properties;
Concrete steps are as follows:
A. whether correctly first raw material quality certificate content is checked according to material standard; Then check raw-material presentation quality, raw material surface does not have lower column defects: pit or projection, ensures that face of weld is smooth, finally carries out the reinspection of chemical composition, mechanical performance, guarantee the quality of raw materials;
B. use sand paper by strict the grinding off of surface scale of 6061 aluminium alloys, AZ31B magnesium alloy and sheet solder Zn-12Cd, to improve the quality of welding;
C. the broken end clear water of each material surface after polishing is rinsed out, then use alcohol washes, oven dry;
D. sheet solder is placed between surface that aluminium alloy is polished and the surface that magnesium alloy is polished, be fixed with fixture, notice that the stressed of fixture is wanted evenly, size controls within the scope of 0.1Mpa ~ 0.2Mpa, between solder and aluminium alloy and all very close to each other between solder and magnesium alloy;
E. the weldment fixed is put into KTF series of tubular vacuum atmosphere resistance furnace, setting firing rate is 6 DEG C ~ 10 DEG C/min, be heated to 310 DEG C ~ 335 DEG C always, and then to set firing rate be 2 DEG C ~ 8 DEG C/min, be heated to 365 DEG C ~ 390 DEG C, insulation 40min ~ 70min, is next cooled to 260 DEG C always, insulation 30min, finally can obtain weldment with stove cool to room temperature;
F. fall the oxide skin on weldment surface with sand papering, both can obtain perfect brazing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410625825.2A CN104439590B (en) | 2014-11-07 | 2014-11-07 | A kind of 6061 aluminium alloys and the soldering processes of AZ31B magnesium alloy |
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| CN201410625825.2A CN104439590B (en) | 2014-11-07 | 2014-11-07 | A kind of 6061 aluminium alloys and the soldering processes of AZ31B magnesium alloy |
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| CN104439590A true CN104439590A (en) | 2015-03-25 |
| CN104439590B CN104439590B (en) | 2016-09-21 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149769A (en) * | 2015-07-29 | 2015-12-16 | 武汉理工大学 | Method for introducing design of laminated compound interlayers to enable magnesium alloy and aluminium alloy to be connected |
| CN105965121A (en) * | 2016-06-22 | 2016-09-28 | 哈尔滨工业大学 | Method for connecting magnesium alloy and aluminum alloy |
| CN111054926A (en) * | 2019-12-03 | 2020-04-24 | 同济大学 | Zn solder reinforced interface aluminum/magnesium/aluminum composite board and powder hot-pressing preparation method |
| CN111927910A (en) * | 2020-06-18 | 2020-11-13 | 北京遥感设备研究所 | Aluminum-magnesium alloy integrated multifunctional integrated structure |
| CN112743083A (en) * | 2019-10-30 | 2021-05-04 | 同济大学 | Aluminum/magnesium/aluminum composite board with Cu solder reinforced interface and powder hot-pressing preparation method |
| CN112894044A (en) * | 2021-01-28 | 2021-06-04 | 哈尔滨工程大学 | Brazing connection method of aluminum alloy and magnesium alloy |
| CN114453692A (en) * | 2021-07-30 | 2022-05-10 | 张耀豪 | Magnesium alloy brazing method |
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| US5564619A (en) * | 1994-02-14 | 1996-10-15 | Kaiser Aluminum & Chemical Corporation | Method of joining aluminium parts by brazing |
| CN1561278A (en) * | 2001-09-28 | 2005-01-05 | 古河Sky株式会社 | Method of brazing aluminum or aluminum alloy materials and aluminum alloy brazing sheet |
| CN101579768A (en) * | 2009-06-12 | 2009-11-18 | 哈尔滨工业大学 | Braze-welding method using two-stage contact reaction of aluminum alloy |
| CN102744482A (en) * | 2012-07-31 | 2012-10-24 | 郑州机械研究所 | Vacuum brazing device and method using device to braze aluminum alloy workpiece |
| CN102873422A (en) * | 2012-10-18 | 2013-01-16 | 北京科技大学 | Aluminum and aluminum alloy and copper diffusion brazing process |
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Patent Citations (5)
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| US5564619A (en) * | 1994-02-14 | 1996-10-15 | Kaiser Aluminum & Chemical Corporation | Method of joining aluminium parts by brazing |
| CN1561278A (en) * | 2001-09-28 | 2005-01-05 | 古河Sky株式会社 | Method of brazing aluminum or aluminum alloy materials and aluminum alloy brazing sheet |
| CN101579768A (en) * | 2009-06-12 | 2009-11-18 | 哈尔滨工业大学 | Braze-welding method using two-stage contact reaction of aluminum alloy |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105149769A (en) * | 2015-07-29 | 2015-12-16 | 武汉理工大学 | Method for introducing design of laminated compound interlayers to enable magnesium alloy and aluminium alloy to be connected |
| CN105965121A (en) * | 2016-06-22 | 2016-09-28 | 哈尔滨工业大学 | Method for connecting magnesium alloy and aluminum alloy |
| CN105965121B (en) * | 2016-06-22 | 2018-03-16 | 哈尔滨工业大学 | A kind of method for connecting magnesium alloy and aluminium alloy |
| CN112743083A (en) * | 2019-10-30 | 2021-05-04 | 同济大学 | Aluminum/magnesium/aluminum composite board with Cu solder reinforced interface and powder hot-pressing preparation method |
| CN111054926A (en) * | 2019-12-03 | 2020-04-24 | 同济大学 | Zn solder reinforced interface aluminum/magnesium/aluminum composite board and powder hot-pressing preparation method |
| CN111927910A (en) * | 2020-06-18 | 2020-11-13 | 北京遥感设备研究所 | Aluminum-magnesium alloy integrated multifunctional integrated structure |
| CN112894044A (en) * | 2021-01-28 | 2021-06-04 | 哈尔滨工程大学 | Brazing connection method of aluminum alloy and magnesium alloy |
| CN114453692A (en) * | 2021-07-30 | 2022-05-10 | 张耀豪 | Magnesium alloy brazing method |
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| CN104439590B (en) | 2016-09-21 |
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