CN109530858A - A method of it improving aluminium alloy electric arc and increases material metallurgy intensity - Google Patents
A method of it improving aluminium alloy electric arc and increases material metallurgy intensity Download PDFInfo
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- CN109530858A CN109530858A CN201811600451.3A CN201811600451A CN109530858A CN 109530858 A CN109530858 A CN 109530858A CN 201811600451 A CN201811600451 A CN 201811600451A CN 109530858 A CN109530858 A CN 109530858A
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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
- B23K9/00—Arc welding or cutting
- B23K9/04—Welding for other purposes than joining, e.g. built-up welding
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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
- B23K35/286—Al as the principal constituent
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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
- B23K9/00—Arc welding or cutting
- B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
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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
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
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Abstract
The invention discloses a kind of methods that raising aluminium alloy electric arc increases material metallurgy intensity, comprising: the shape according to aluminium alloy element is planned in advance increases material path；The welding gun is using the increasing material path as axis, with swung in the plane of the substrate-parallel, by multiple repetitive units, successively tandem array forms swinging track, the repetitive unit is formed by two isosceles trapezoid track tandem arrays for being distributed in the axis two sides, the isosceles trapezoid track is made of two waists and a shorter bottom edge, and two isosceles trapezoid tracks are centrosymmetric relative to connecting points；The amplitude of the swinging track is 2~5mm, and the welding gun is 0.1~0.2s in the time that two peak swing positions of the repetitive unit are advanced, and the welding gun forms the time used in each repetitive unit as 0.3~0.6s.The metallurgical bonding performance of the manufactured aluminium alloy element shaped of the invention is good, and intensity can be improved to 90% or more of base material.
Description
Technical field
The invention belongs to material increasing field more particularly to a kind of methods for improving aluminium alloy electric arc and increasing material metallurgy intensity.
Background technique
In material increasing field, metal parts increases material manufacturing technology using electric arc as heat source has that equipment is simple, material
The advantages that utilization rate height, high production efficiency.Electric arc increases material manufacturing technology is melted metal wire material as heat source using electric arc, by setting
Determine forming path and accumulate synusia on substrate, layer upon layer is until metal parts forms.Therefore, it is low cost that electric arc, which increases material technology,
The important research direction of direct metal fabricating.Wherein aluminum alloy materials are widely used to Aerospace Products manufacture, can
Effectively mitigate product weight, improves product flying quality.
But electric arc increasing material manufacturing process is realized with layer upon layer, with the increase of the number of plies, accumulate part heat accumulation it is serious,
Radiating condition is poor between layers, bath superheat, this problem directly affects the metallurgical bonding intensity of part.Aluminium alloy electric arc simultaneously
Increase material in the process since solubility is very big in the aluminium of liquid for hydrogen, and the solubility in solid aluminum is almost nil, when molten bath is cold
The solubility of hydrogen great decline when but arriving setting temperature is precipitated a large amount of hydrogen and has little time to escape, and can be formed in aluminium alloy a large amount of
Hydrogen blistering, lead to part mechanical properties decrease.It can be seen that improving aluminium alloy electric arc to increase material metallurgy intensity is that aluminium alloy increases material
One of main bottleneck of manufacturing technology.
Summary of the invention
Technical problem solved by the present invention is giving a kind of raising aluminium alloy electric in place of overcome the deficiencies in the prior art
The method of arc increasing material metallurgy intensity.
The technical solution of the invention is as follows:
A method of it improving aluminium alloy electric arc and increases material metallurgy intensity, comprising the following steps:
Using aluminium alloy welding wire, implement the electric arc increasing material manufacturing process of aluminium alloy element using cold metal transfer welding machine；
Wherein, it during each layer of progress electric arc increasing material manufacturing to the aluminium alloy element, is closed according to the aluminium
The shape of golden component is planned in advance increases material path, and the welding gun of the cold metal transfer welding machine is along the continuous row in the increasing material path
Into so that the aluminium alloy welding wire be made to form a layer heap lamination on substrate；The welding gun using the increasing material path as axis, with
It is swung in the plane of the substrate-parallel, by multiple repetitive units, successively tandem array forms swinging track, the repetition
Unit is formed by two isosceles trapezoid track tandem arrays for being distributed in the axis two sides, and the isosceles trapezoid track is by two waists
It is constituted with one shorter bottom edge, two isosceles trapezoid tracks are centrosymmetric relative to connecting points；The amplitude of the swinging track
For 2~5mm, the welding gun is 0.1~0.2s in the time that two peak swing positions of the repetitive unit are advanced, described
Welding gun forms the time used in each repetitive unit as 0.3~0.6s.
Preferably, the aluminium alloy electric arc that improves increases in the method for material metallurgy intensity, and the aluminium alloy welding wire is
5B06 aluminium alloy welding wire.
Preferably, the described aluminium alloy electric arc that improves increases in the method for material metallurgy intensity, the aluminium alloy welding wire it is straight
Diameter is 1.2mm.
Preferably, the aluminium alloy electric arc that improves increases in the method for material metallurgy intensity, to the aluminium alloy element
Each layer of progress electric arc increasing material manufacturing during, the aluminium alloy welding wire stretch out the wire guiding nipple of the welding gun length be 12
~15mm, wire feed rate are 7m/min~9m/min.
Preferably, the aluminium alloy electric arc that improves increases in the method for material metallurgy intensity, to the aluminium alloy element
Each layer of progress electric arc increasing material manufacturing during, the travel speed of welding gun is 8mm/s~11mm/s.
Preferably, the aluminium alloy electric arc that improves increases in the method for material metallurgy intensity, to the aluminium alloy element
Each layer of progress electric arc increasing material manufacturing during, the cold metal transfer welding machine use cold metal transfer technique and pulse
The mixed transition mode crossed works.
Preferably, the aluminium alloy electric arc that improves increases in the method for material metallurgy intensity, to the aluminium alloy element
Each layer of progress electric arc increasing material manufacturing during, using 99.999% high-purity argon carry out front protecting, flow be 18~
20L/min。
Preferably, the described aluminium alloy electric arc that improves increases in the method for material metallurgy intensity, the substrate by with a thickness of
The 5A06 aluminum alloy plate materials of 20mm are made；Before carrying out electric arc increasing material manufacturing, pickling first is carried out to the substrate, then by surface
It polishes flat and uses acetone wiped clean.
Preferably, the aluminium alloy electric arc that improves increases in the method for material metallurgy intensity, to the aluminium alloy element
Each layer of progress electric arc increasing material manufacturing before, first manufacture prime coat on the substrate, when manufacturing prime coat, welding current
20-50A bigger than the increasing material electric current, the cold metal transfer welding machine uses the mixing of cold metal transfer technique and pulse transition
The mode of crossing works, and the width of the prime coat is bigger than the width for the upper layer stack layer being formed on, the surface of the prime coat
It is smooth.
The invention has the following advantages over the prior art:
The present invention using cold metal transfer welding machine carry out electric arc increasing material manufacturing process, each layer to aluminium alloy element into
During row electric arc increasing material manufacturing, welding gun is swung in the plane with substrate-parallel using increasing material path as axis, thus shape
At specific swinging track.The aluminium alloy element shaped of the invention manufactured is made of full seam organization, the gas in molten bath by
Effect to wire oscillation is easier to be stirred precipitation, and fusion penetration increases, and keeps metal compaction degree high, and metallurgical bonding performance is good, and aluminium closes
The intensity of golden component can be improved to 90% or more of base material.Present device small investment, stock utilization height (close to
100%) production cost, is reduced, the production cycle is shortened.
Detailed description of the invention
Fig. 1 is torch swinging track schematic diagram in one embodiment.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, below in conjunction with attached drawing to this hair
Bright specific embodiment is described in detail.
The present invention provides a kind of methods that raising aluminium alloy electric arc increases material metallurgy intensity, comprising the following steps: uses aluminium
Alloy welding wire implements the electric arc increasing material manufacturing process of aluminium alloy element using cold metal transfer welding machine；Wherein, it is closed to the aluminium
During each layer of progress electric arc increasing material manufacturing of golden component, the shape according to the aluminium alloy element plans the road Zeng Cai in advance
The welding gun of diameter, the cold metal transfer welding machine is continuously traveling along the increasing material path, to make the aluminium alloy welding wire in base
A layer heap lamination is formed on plate；The welding gun using the increasing material path as axis, with put in the plane of the substrate-parallel
Dynamic, by multiple repetitive units, successively tandem array forms swinging track, and the repetitive unit is by being distributed in the two of the axis two sides
A isosceles trapezoid track tandem array forms, and the isosceles trapezoid track is made of two waists and a shorter bottom edge, and two etc.
The trapezoidal track of waist is centrosymmetric relative to connecting points；The amplitude of the swinging track is 2~5mm, and the welding gun is described heavy
The time that two peak swing positions of multiple unit are advanced is 0.1~0.2s, and the welding gun, which forms each repetitive unit, to be made
Time is 0.3~0.6s (swinging track is as shown in Figure 1).
The present invention provides heat source using CMT welding machine (CMT, cold metal transfer, cold metal transfer) and carries out electric arc
Increasing material manufacturing.Aluminium alloy element is layered in advance on a data processing system, and plans every layer of increasing material path, welding gun when welding
Being advanced according to the increasing material path planned, (welding wire is installed in the pipette tips of welding gun, and the movement of welding gun comes down to the shifting of welding wire
It is dynamic), as soon as whenever welding gun from layer the one end in increasing material path be moved to the other end, aluminium alloy welding wire forms a layer heap on substrate
Lamination.Welding gun completes one layer of electric arc increasing material manufacturing, must move up certain distance, continue upper one layer of electric arc increasing material manufacturing,
To successively complete the electric arc increasing material manufacturing process to aluminium alloy element.
Wherein, during to each layer of progress electric arc increasing material manufacturing, welding gun makes wobbling action around material path is increased.Weldering
Rifle is swung in the plane with substrate-parallel to increase material path as axis, swinging track by multiple repetitive units successively
Tandem array forms.That is, the tail end of previous repetitive unit is connect with the head end of the latter repetitive unit.Repetitive unit is by two
Isosceles trapezoid track tandem array forms, and isosceles trapezoid track constitutes (isosceles trapezoid track by two waists and a shorter bottom edge
Without longer bottom edge), and two isosceles trapezoid tracks are centrosymmetric distribution relative to connecting points between the two.It repeats single
Member can substantially be understood as sinusoidal form, and only sine curve is made of two waveform curved sections, and of the invention
Repetitive unit is made of two isosceles trapezoid tracks.The amplitude of swinging track is 2~5mm, it is, the isosceles ladder of repetitive unit
The distance that the shorter bottom edge of shape track reaches increasing material path is 2~5mm.Two peak swing position rows of the welding gun in repetitive unit
Into time be 0.1~0.2s, that is, welding gun swinging to peak swing position (the shorter bottom edge of isosceles trapezoid track) rise
Behind beginning position, advance forward in the position, traveling time be 0.1~0.2s, therefore, welding gun peak swing position traveling away from
The length on the shorter bottom edge from namely isosceles trapezoid track can be calculated by traveling time multiplied by the travel speed of welding gun
Out.Welding gun forms the time used in each repetitive unit as 0.3~0.6s, then welding gun is in the position of four waists of repetitive unit
The time of traveling adds up to 0.1~0.2s, due to four waists be it is identical, the time that welding gun is advanced in each waist is 0.025~
0.05s.Using welding gun travel speed and traveling time, then the length of each waist can be calculated.
The present invention is that welding gun devises specific wobbling action, so that welding gun be made to form specific swinging track.Due to
When cold metal transfer welds, welding wire carries out stretching out the movement with pumpback with certain frequency, and electric arc repeatedly burns and extinguishes, in electricity
Electric arc just generates wobbling action with welding gun when arc burns, to stir to molten bath, promotes the gas evolution in molten bath,
Refinement crystal grain, uniform formation and the purpose for reducing stomata are played, interfacial bonding strength is improved.Welding gun advances in the form swung,
Molten drop falls off rapidly under the action of the centrifugal force, promotes the droplet transfer.Peak swing position corresponds to the both ends in molten bath, and welding gun is being put
It moves to peak swing position, continues the 0.1~0.2s that advances forward in peak swing position, it is understood that at welding gun in maximum
Amplitude position is briefly maintained, and molten bath both ends heat input can be made to increase, and fusion penetration increases.Within the scope of 0.1~0.2s,
Time is longer, and fusion penetration is deeper, and performance is better；Time is shorter, and shaping surface is better.Except 0.1~0.2s range, then it may influence
The stability of welding process.For amplitude of fluctuation (amplitude) in 2~5mm, shaping surface is good.Within the scope of 2~5mm, amplitude of fluctuation
Degree increases, and molten wide increases, and fusion penetration reduces, and melts Gao Zengjia, and performance is better.
The manufactured aluminium alloy element shaped of the invention is made of full seam organization, and the gas in molten bath is by wire oscillation
Effect be easier to be stirred precipitation, fusion penetration increases, and keeps metal compaction degree high, and metallurgical bonding performance is good, aluminium alloy element it is strong
Degree can be improved to 90% or more of base material.
In addition, present device small investment, stock utilization height (close to 100%), also reduce production cost, shorten
Production cycle.
Welding gun is mounted on six shaft mechanical arm of Funac, and the movement for realizing welding gun is driven by mechanical arm.
In a preferred embodiment, the aluminium alloy electric arc that improves increases in the method for material metallurgy intensity, the aluminium
Alloy welding wire is 5B06 aluminium alloy welding wire.
In a preferred embodiment, the aluminium alloy electric arc that improves increases in the method for material metallurgy intensity, the aluminium
The diameter of alloy welding wire is 1.2mm.
Aluminium alloy element manufactured by the present invention is formed by full seam organization, and thickness depends on aluminium alloy welding wire.This hair
It is bright manufacture very thin thickness aluminium alloy element when, component still has good strength character.
In a preferred embodiment, the aluminium alloy electric arc that improves increases in the method for material metallurgy intensity, to institute
During each layer of progress electric arc increasing material manufacturing for stating aluminium alloy element, the aluminium alloy welding wire stretches out the seal wire of the welding gun
The length of mouth is 12~15mm, and wire feed rate is 7m/min~9m/min.
For wire feed rate in 7m/min~9m/min, shaping surface is best, and wire feed rate increases, molten wide, fusion penetration and molten bath
Height all increases.Increasing material electric current can change automatically with the variation of wire feed rate, and the variation for increasing material electric current changes burn-off rate
Become.
In a preferred embodiment, the aluminium alloy electric arc that improves increases in the method for material metallurgy intensity, to institute
During each layer of progress electric arc increasing material manufacturing for stating aluminium alloy element, the travel speed of welding gun is 8mm/s~11mm/s.
The travel speed of welding gun is in 8mm/s~11mm/s, the smooth beauty of shaping surface, and molten wide and molten height are with welding gun
The increase of travel speed and reduce.
In a preferred embodiment, the aluminium alloy electric arc that improves increases in the method for material metallurgy intensity, to institute
During each layer of progress electric arc increasing material manufacturing for stating aluminium alloy element, the cold metal transfer welding machine uses cold metal transfer
Technique and the mixed transition mode of pulse transition work.
In welding process, first by arc ignition, for molten drop to molten bath transition, molten drop enters arc extinction behind molten bath, electric current
Decrease up to short circuit.Short-circuit signal detects and is fed back to wire-feed motor, wire-feed motor pumpback silk material, such silk by dsp processor
Material is separated with molten drop, makes molten drop transition under no current state.The subsequent silk material direction of motion changes, and the starting the arc carries out heap again
It applies, so recycles, be finally completed increasing material manufacturing process.
The present invention is in welding aluminum alloy component, by the way of CMT transition and pulse transition mixing, further to improve
The shaping surface effect of weld seam improves welding quality.
In a preferred embodiment, the aluminium alloy electric arc that improves increases in the method for material metallurgy intensity, to institute
During each layer of progress electric arc increasing material manufacturing for stating aluminium alloy element, front protecting is carried out using 99.999% high-purity argon,
Flow is 18~20L/min.
In a preferred embodiment, the aluminium alloy electric arc that improves increases in the method for material metallurgy intensity, the base
Plate with a thickness of the 5A06 aluminum alloy plate materials of 20mm by being made；Before carrying out electric arc increasing material manufacturing, pickling first is carried out to the substrate,
Then surface is polished flat and uses acetone wiped clean.
In a preferred embodiment, the aluminium alloy electric arc that improves increases in the method for material metallurgy intensity, to institute
Before each layer of progress electric arc increasing material manufacturing for stating aluminium alloy element, prime coat is first manufactured on the substrate, manufactures bottoming
When layer, welding current is 20~50A bigger than the increasing material electric current, and the cold metal transfer welding machine uses cold metal transfer technique and arteries and veins
It breaks through the mixed transition mode crossed to work, the width of the prime coat is bigger than the width for the upper layer stack layer being formed on, institute
State the surfacing of prime coat.Aluminium alloy element is formed on above-mentioned prime coat.
Embodiment 1
(1) the 20mm thickness 5A06 substrate surface machine of being twisted after pickling is polished flat, exposes brilliant white non-ferrous metal and with third
Ketone or dehydrated alcohol wiped clean.
(2) substrate is fixed on the table, guarantee bottom plate in robot stroke range.
(3) front protecting is carried out using 99.999% high-purity argon, flow is 18~20L/min.
(4) choosing suitable position in substrate is three layers of arcing point bottoming, mode select C+P (CMT transition and pulse transition
Mixed transition form), big 20A~50A of welding current upper layer forming current (i.e. increasing material electric current) or so, the surface of prime coat at
Shape is wider flat, be completely spread out upper layer accumulation can in bottoming layer surface.
(5) after bottoming is complete, suitable arcing point is chosen, arcing point is straight line both ends, and position guarantees at Forming Workpiece center
Welding gun is in safety zone in operational process.
Raw material are 5B06 aluminium alloy welding wire, diameter 1.2mm, welding wire stretching 12~15mm of wire guiding nipple.
It uses instead and swings technological parameter progress entity part (i.e. aluminium alloy element) accumulation.
Increase material electric current 100A, wire feed rate 7.5m/min, the travel speed 8mm/s of welding gun.
Increase material makes welding gun carry out swing operation in the process, and weave mode is shown in Fig. 1, amplitude W=3mm, in a repetitive unit
The time advanced forward on two interior peak swing positions is 0.1s, travel distance L1=0.1 × 8=of the welding gun in wave crest
0.8mm, welding gun swing the length L=0.8+0.8+0.2 of a cycle in travel distance L2=0.1 × 8=0.8mm of trough
× 8=3.2mm.
Single layer cladding layer height 1.2mm, width 10mm.
Increase material mode and selects C+P mode (mode of cold metal transfer technique and pulse mixed transition).
The mechanical arm method of operation is linear reciprocation operation.It and so on shapes, produces wide 100mm, high 200mm, wall thickness
The aluminium alloy straight wall plate of 10mm.
Increasing material exemplar out, tensile strength >=275MPa, elongation percentage >=10% are accumulated using the method.
Embodiment 2
In step (5), increase material electric current 100A, wire feed rate 7m/min, the travel speed 8mm/s of welding gun.
Increase material makes welding gun carry out swing operation in the process, and weave mode is shown in Fig. 1, amplitude W=2mm, in peak swing position
On time for advancing forward be 0.2s, the time advanced forward on peak swing position is 0.2s, traveling of the welding gun in wave crest
Distance L1=0.2 × 8=1.6mm, welding gun swing the length of a cycle in travel distance L2=0.2 × 8=1.6mm of trough
Spend L=1.6+1.6+0.2 × 8=4.8mm.
Single layer cladding layer height 1.2mm, width 10mm.
Increase material mode and selects C+P mode (mode of cold metal transfer technique and pulse mixed transition).Transient mode and reality
Example 1 is identical.
The mechanical arm method of operation is linear reciprocation operation.It and so on shapes, produces wide 100mm, high 200mm, wall thickness
The aluminium alloy straight wall plate of 10mm.
Increasing material exemplar out is accumulated using the method, tensile strength is 290MPa or so, elongation percentage >=10%.
Embodiment 3
In step (5), increase material electric current 100A, wire feed rate 9m/min, the travel speed 11mm/s of welding gun.
Increase material makes welding gun carry out swing operation in the process, and weave mode is shown in Fig. 1, amplitude W=5mm, in peak swing position
On time for advancing forward be 0.2s, the time advanced forward on peak swing position is 0.2s, traveling of the welding gun in wave crest
Distance L1=0.2 × 11=1.1mm, welding gun swing a cycle in travel distance L2=0.2 × 11=1.1mm of trough
Length L=1.1+1.1+0.1 × 11=3.3mm.
Single layer cladding layer height 1.2mm, width 10mm.
Increase material mode and selects C+P mode (mode of cold metal transfer technique and pulse mixed transition).Transient mode and reality
Example 1 is identical.
The mechanical arm method of operation is linear reciprocation operation.It and so on shapes, produces wide 100mm, high 200mm, wall thickness
The aluminium alloy straight wall plate of 10mm.
Increasing material exemplar out is accumulated using the method, tensile strength is 300MPa or so, elongation percentage >=15%.
Although the present invention is disclosed as above with preferred embodiment, it is not for limiting the present invention, any this field skill
Art personnel without departing from the spirit and scope of the present invention, can make possible variation and modification, therefore, guarantor of the invention
Shield range should be subject to the range that the claims in the present invention are defined.
Claims (9)
1. a kind of method for improving aluminium alloy electric arc and increasing material metallurgy intensity, which comprises the following steps:
Using aluminium alloy welding wire, implement the electric arc increasing material manufacturing process of aluminium alloy element using cold metal transfer welding machine；
Wherein, during each layer of progress electric arc increasing material manufacturing to the aluminium alloy element, according to the aluminium alloy structure
The shape of part is planned in advance increases material path, and the welding gun of the cold metal transfer welding machine is continuously traveling along the increasing material path, from
And the aluminium alloy welding wire is made to form a layer heap lamination on substrate；The welding gun using the increasing material path as axis, with it is described
It is swung in the plane of substrate-parallel, by multiple repetitive units, successively tandem array forms swinging track, the repetitive unit
Two isosceles trapezoid track tandem arrays by being distributed in the axis two sides form, and the isosceles trapezoid track is by two waists and one
A shorter bottom edge is constituted, and two isosceles trapezoid tracks are centrosymmetric relative to connecting points；Amplitude is 2~5mm, and the welding gun exists
The time that two peak swing positions of the repetitive unit are advanced is 0.1~0.2s, and it is single that the welding gun forms each repetition
Time used in member is 0.3~0.6s.
2. improving the method that aluminium alloy electric arc increases material metallurgy intensity as described in claim 1, which is characterized in that the aluminium alloy
Welding wire is 5B06 aluminium alloy welding wire.
3. improving the method that aluminium alloy electric arc increases material metallurgy intensity as claimed in claim 2, which is characterized in that the aluminium alloy
The diameter of welding wire is 1.2mm.
4. improving the method that aluminium alloy electric arc increases material metallurgy intensity as claimed in claim 3, which is characterized in that the aluminium
During each layer of progress electric arc increasing material manufacturing of alloy components, the aluminium alloy welding wire stretches out the wire guiding nipple of the welding gun
Length is 12~15mm, and wire feed rate is 7m/min~9m/min.
5. improving the method that aluminium alloy electric arc increases material metallurgy intensity as claimed in claim 4, which is characterized in that the aluminium
During each layer of progress electric arc increasing material manufacturing of alloy components, the travel speed of welding gun is 8mm/s~11mm/s.
6. feature exists as raising aluminium alloy electric arc according to any one of claims 1 to 5 increases the method for material metallurgy intensity
During each layer of progress electric arc increasing material manufacturing to the aluminium alloy element, the cold metal transfer welding machine is used
Cold metal transfer technique and the mode of pulse mixed transition work.
7. improving the method that aluminium alloy electric arc increases material metallurgy intensity as claimed in claim 6, which is characterized in that the aluminium
During each layer of progress electric arc increasing material manufacturing of alloy components, front protecting, flow are carried out using 99.999% high-purity argon
For 18~20L/min.
8. as claimed in claim 6 improve aluminium alloy electric arc increase material metallurgy intensity method, which is characterized in that the substrate by
It is made with a thickness of the 5A06 aluminum alloy plate materials of 20mm；Before carrying out electric arc increasing material manufacturing, pickling first is carried out to the substrate, then
Surface is polished flat and uses acetone wiped clean.
9. improving the method that aluminium alloy electric arc increases material metallurgy intensity as claimed in claim 6, which is characterized in that the aluminium
Before each layer of progress electric arc increasing material manufacturing of alloy components, prime coat is first manufactured on the substrate, when manufacturing prime coat,
Welding current is 20~50A bigger than the increasing material electric current, and the cold metal transfer welding machine uses cold metal transfer technique and pulse
The mixed transition mode crossed works, and the width of the prime coat is bigger than the width for the upper layer stack layer being formed on, described to beat
The surfacing of bottom.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110625219A (en) * | 2019-09-04 | 2019-12-31 | 上海工程技术大学 | Electric arc additive manufacturing process for thick-wall aluminum alloy structural parts with different thicknesses |
| CN111014886A (en) * | 2019-12-30 | 2020-04-17 | 中国电子科技集团公司第二十研究所 | Manufacturing method of aluminum alloy box body type part based on electric arc additive |
| CN111390344A (en) * | 2020-03-23 | 2020-07-10 | 北京航星机器制造有限公司 | Method for planning electric arc additive manufacturing path without lap joint in layer |
| CN112059386A (en) * | 2020-09-08 | 2020-12-11 | 湘潭大学 | Method for controlling fuse deposition molten pool state |
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| CN112059386A (en) * | 2020-09-08 | 2020-12-11 | 湘潭大学 | Method for controlling fuse deposition molten pool state |
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