CN106862561A - A kind of manufacturing process of aluminium alloy - Google Patents
A kind of manufacturing process of aluminium alloy Download PDFInfo
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- CN106862561A CN106862561A CN201510931376.9A CN201510931376A CN106862561A CN 106862561 A CN106862561 A CN 106862561A CN 201510931376 A CN201510931376 A CN 201510931376A CN 106862561 A CN106862561 A CN 106862561A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 67
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 48
- 238000005253 cladding Methods 0.000 claims abstract description 43
- 239000000758 substrate Substances 0.000 claims abstract description 17
- 238000007493 shaping process Methods 0.000 claims abstract description 10
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims description 43
- 239000000463 material Substances 0.000 claims description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 5
- 239000000956 alloy Substances 0.000 abstract description 17
- 238000005516 engineering process Methods 0.000 description 17
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 16
- 229910052782 aluminium Inorganic materials 0.000 description 16
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 14
- 239000004411 aluminium Substances 0.000 description 14
- 238000002844 melting Methods 0.000 description 12
- 230000008018 melting Effects 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 238000000576 coating method Methods 0.000 description 9
- 238000005260 corrosion Methods 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 8
- 230000007797 corrosion Effects 0.000 description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 description 7
- 239000001569 carbon dioxide Substances 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000011161 development Methods 0.000 description 5
- 230000001360 synchronised effect Effects 0.000 description 5
- 238000005275 alloying Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000000977 initiatory effect Effects 0.000 description 3
- 238000004372 laser cladding Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000010099 solid forming Methods 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000001073 sample cooling Methods 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 240000006409 Acacia auriculiformis Species 0.000 description 1
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 241000208340 Araliaceae Species 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- MEOSMFUUJVIIKB-UHFFFAOYSA-N [W].[C] Chemical compound [W].[C] MEOSMFUUJVIIKB-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000003872 feeding technique Methods 0.000 description 1
- 238000010285 flame spraying Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910052752 metalloid Inorganic materials 0.000 description 1
- 150000002738 metalloids Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910021652 non-ferrous alloy Inorganic materials 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2203/00—Controlling
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Powder Metallurgy (AREA)
- Laser Beam Processing (AREA)
Abstract
The present invention relates to a kind of manufacturing process of aluminium alloy.Methods described includes：The threedimensional model of aluminium alloy is set up, and subdivision is carried out to the threedimensional model, cladding control program worked out according to subdivision result and is loaded into digital control system；The digital control system is set cladding 8-12 layers on substrate, so that basis of formation cladding layer；Reset the digital control system carries out uniform and stable shaping on the basic cladding layer, until forming process terminates.The method of the invention can solve the problems, such as easily to be cracked in aluminium alloy cladding process, it is possible to produce the aluminum alloy materials of high-quality.
Description
Technical field
The present invention relates to technical field of aluminum alloy technology, the manufacturing process of aluminium alloy is related generally to.
Background technology
Aluminium alloy is most widely used class non-ferrous metal structural material in industry, aviation,
Widely applied in space flight, automobile, machine-building, ship and chemical industry.Industrial economy
Develop rapidly, the demand to Welded structural member is increasing, the weldability for enabling aluminum alloy to
Research is also goed deep into therewith.
Aluminium alloy usually using alloying elements such as copper, zinc, manganese, silicon, magnesium, 20 beginnings of the century by
German Alfred Wilm are invented, and help very big to aircraft development, once big Postwar German aluminium
Alloying component is listed in state secret.Being compared with common carbon steel has lighter and corrosion resistant property
Can, but corrosion resistance is not so good as fine aluminium.The surface of aluminium alloy can shape under environment that is clean, drying
Into the oxide layer of protection.
The situation for causing galvanic corrosion (Galvanic corrosion) to accelerate has：Aluminium alloy with
The situation of Bu Rust steel contact, other corrosion of metal current potentials are lower than aluminium alloy or in moist ring
Under border.If aluminium must have water-containing He Bu Rust steel will be used together
Electronics or electrolysis isolation between systems or the metal of outdoor installation two.
The composition of aluminium alloy need to association of Alcoa (Aluminium Association,
AA) register.Many tissues announce the standard of more specific manufacture aluminium alloy, including american car work
Cheng Xiehui (Society of Automotive Engineers, SAE) is particularly air standard,
Also American Society for Testing Materials (American Society for Testing and
Materials, ASTM).
Aluminium alloy is most widely used class non-ferrous metal structural material in industry, aviation,
Space flight, automobile, machine-building, ship aluminium alloy
And widely applied in chemical industry.
As science and technology and industrial economy are developed rapidly in recent years, to aluminum alloy welding binding
The demand of component is increasing, and the Research on Weldability for enabling aluminum alloy to also is goed deep into therewith.Aluminium alloy
Extensively using the development for promoting aluminum alloy solder technology, while the development of solder technology is expanded again
The application field of aluminium alloy, thus aluminium alloy solder technology just turning into research focus it
One.
The density of fine aluminium is small (ρ=2.7g/cm3), about the 1/3 of iron, and fusing point is low (660 DEG C),
Aluminium is face-centred cubic structure, therefore with plasticity (δ very high：32~40%, ψ：70~90%),
It is easy to process, can be made into various section bars, sheet material.Corrosion resistance is good；But the intensity of fine aluminium
Very low, annealed condition σ b values are about 8kgf/mm2, therefore should not make structural material.By length
The production practices and scientific experiment of phase, people gradually with add alloying element and with heat treatment etc.
Method carrys out reinforced aluminum, and this has just obtained a series of aluminium alloy.
Can also have while the alloy of certain element formation is added the advantages of fine aluminium light weight is kept
There is intensity higher, σ b values are respectively up to 24~60kgf/mm2.So so that it is " than strong
Degree " (the ratio σ b/ ρ of intensity and proportion) surpasses many steel alloys, as preferably knot
Structure material, is widely used in the aspects such as machine-building, Transport Machinery, dynamic power machine and aircraft industry,
Fuselage, covering, compressor of aircraft etc. are often manufactured with aluminium alloy, to mitigate deadweight.Using aluminium
Alloy replaces the welding of steel plate materialses, and construction weight can mitigate more than 50%.
But, aluminium alloy plasticity at room temperature is very poor, shapes extremely difficult, limits
The engineering application of the material.Therefore, researcher is just actively developing its near-net-shape technology,
Such as powder metallurgy, hot investment casting, directional solidification and Laser Melting Deposition.
Laser melting and coating technique is that 20 century 70s rise with the development of high power laser
A kind of new process for modifying surface, refer to laser surface deposition technology be laser beam effect under
Alloy powder or ceramic powders are heated and melted rapidly with matrix surface, light beam removes rear self-excitation
Be cooled into that dilution rate is extremely low, with matrix material in metallurgical binding face coat so that significantly
Improve that matrix surface is wear-resisting, anti-corrosion, heat-resisting, anti-oxidant and a kind of surface of electrical characteristic etc. is strong
Change method [after such as carries out carbon tungsten laser melting coating to 60# steel, hardness is up to more than 2200HV,
Abrasion resistance properties are 20 times or so of matrix 60# steel.In Q235 steel surface laser melting coatings
After CoCrSiB alloys, its wearability is contrasted with the corrosion resistance of flame-spraying, found
The former corrosion resistance is apparently higher than the latter
Laser melting and coating technique is a kind of economic benefit new technology very high, and it can be in cheap metal
High performance alloy surface is prepared on base material without influenceing the property of matrix, reduces cost, section
About valuable Rare Metals Materials, therefore, each industrial advanced country is to laser melting and coating technique in the world
Research and application all pay much attention to.
The laser for being applied to laser melting coating mainly has carbon dioxide laser and solid state laser
(mainly including disc laser, optical fiber laser and diode laser, old-fashioned lamp pumping swash
Light device is low due to electricity conversion, gradually fades out market the problems such as safeguard cumbersome).For
Continuous CO 2 laser cladding, domestic and foreign scholars have been done numerous studies high powers solid and have been swashed
The research and development of light device is rapid, is mainly used in non-ferrous alloy surface and is modified.According to the literature, adopt
Aluminium alloy laser melting coating is carried out with carbon dioxide laser, alloy matrix aluminum is in carbon dioxide laser spoke
It is easily deformed according under the conditions of, or even is collapsed.Solid state laser, particularly disc laser are exported
Wavelength is 1.06 μm, 1 order of magnitude small compared with carbon dioxide laser wavelength, thus is more suitable for this
The laser melting coating of metalloid.
Laser melting coating can be divided into two classes by the difference of powder feeding technique：The preset method of powder and synchronous powder feeding system
Method.Two methods effect is similar, and synchronous powder feeding system method has easily realizes Automated condtrol, laser energy
Amount absorptivity is high, and without internal porosity, especially deposited metals are ceramic, can significantly improve cladding layer
Anti-cracking performance, make hard ceramic mutually the advantages of can be uniformly distributed in cladding layer.
Laser cladding forming technology is in the case of without special tooling mould, by high power
The various metal dusts of laser fusion synchronous transport, pointwise is successively piled up and carrys out Prototyping Metal Parts
Process.Technology formation of parts by the way of increment growth, is remarkably improved stock utilization,
And formed parts only need final finishing, part manufacture and lead time can be greatly shortened, carried
Development efficiency high, reduces cost.In addition, multiple material and difference can be carried out in an equipment
The manufacture of shape part, and Element Design can easily be changed by reprogram, with very high
Processing flexibility, should with wide exploitation on by the quick preparation of alloy manufacture severe service components
Use prospect.
Aluminium alloy, due to the presence of higher thermal stress, easily occurs during Laser Melting Deposition
Cracking.According to both at home and abroad, the Al-alloy products size of laser forming manufacture is limited, general
There is 60mm or so, the problem easily split in addition is difficult to be solved by changing technological parameter.Aluminium is closed
Auri body is susceptible to cracking in preheating, for the technique for avoiding the problem from being used becomes multiple
It is miscellaneous.Forming technology and the pre-heating technique to substrate by adjusting initial cladding layer of the invention, system
The aluminum alloy materials of flawless have been made, and on the basis of grasp shapes the alloying technology, manufacture
Go out larger-size aluminum alloy sample.
The content of the invention
The problem that the present invention easily ftractures for aluminium alloy in the prior art, employs following technology
Scheme：
The present invention by adjust initial cladding layer forming technology and to the pre-heating technique of substrate come
Flawless aluminium alloy laser solid forming is carried out, the concrete technical scheme of use is as follows：
1. a kind of manufacturing process of aluminium alloy, methods described includes：
(1) threedimensional model of aluminium alloy is set up, and subdivision is carried out to the threedimensional model, according to
Subdivision result is worked out cladding control program and is loaded into digital control system；
(2) it is 150-180 to be arranged to control the sweep speed of powder-feeding nozzle by the digital control system
M/h, the powder feed rate of powder feed system is set as 9 to 12 gram/minutes, and will be molten
The subdivision for covering every layer in control program is highly set as 0.15-0.25mm, the cladding on substrate
8-12 layers, so that basis of formation cladding layer；
(3) sweep speed of powder-feeding nozzle is adjusted to 250-350 ms/h again, while will
The powder feed rate of powder feed system is adjusted to 8-12 gram/minutes, and every layer is cutd open in cladding control program
Divide Height Adjustment to be 0.5-1.0mm, uniform and stable shaping carried out on the basic cladding layer,
Until forming process terminates.
2. the method as described in technical scheme 1, it is characterised in that：The material of the substrate is
The aluminium alloy of titaniferous.
3. the method as described in technical scheme 1 or 2, it is characterised in that：The material of the substrate
Material thickness is 8-12mm.
4. the method as any one of technical scheme 1 to 3, it is characterised in that：It is described
Oxygen content in the working chamber of cladding is less than 80ppm.
5. the method as any one of technical scheme 1 to 4, it is characterised in that：First
Argon gas is filled with working chamber to exclude air, 12-16 liters/min of argon flow amount works as shaping
About in 1000ppm, open cleaning system makes oxygen content be less than 100ppm to indoor oxygen content.
6. the method as any one of technical scheme 1 to 5, it is characterised in that：It is described
The granularity about 50-300 mesh of the Al alloy powder that powder feed system is used.
7. the method as described in technical scheme 1, it is characterised in that：Form the basic cladding
During layer, laser power parameters as 500-1000W are set.
8. the method according to any one of technical scheme 1 to 7, it is characterised in that：Enter
During the row uniform and stable shaping, laser power parameters as 1500-2500W are set.
9. the method according to any one of technical scheme 1 to 7, it is characterised in that：Institute
State the granularity about 100-200 mesh of the Al alloy powder of powder feed system use.
10. the method according to any one of technical scheme 1 to 7, it is characterised in that：：
When forming the basic cladding layer, laser power parameters as 600-800W are set.
The present invention is manufactured using laser three-dimensional RP technique, and the technology is according to quick
Forming Theory is directly melted the Al alloy powder of synchronous transport using high-power laser beam, then
Rapid solidification, with being synchronized with the movement for laser beam and powder-feeding nozzle, continuously successively cladding goes out densification
High-performance metal structural member manufacture method.The present invention by setting different subdivisions highly,
The different speeds of service (sweep speed of nozzle) of lathe are controlled, setting powder feed system is different
Powder feed rate, you can manufacture flawless aluminum alloy materials or aluminium aluminium base other easily split alloy material
Material.Compared with traditional handicraft, aluminum alloy materials are manufactured using the process, can avoid melting
Occur the phenomenon that aluminium alloy is easily cracked during covering, produce the aluminium alloy material of flawless
Material, is that aluminium alloy realizes that engineering is laid a good foundation in quick manufacture field.
Specific embodiment
Below by specific embodiment, the present invention is described in detail.
The present invention is using laser solid forming technology manufacture flawless aluminum alloy materials, the method institute
It is laser solid forming equipment with equipment, it can be by commercially available.
Preferably, laser 1 uses 4KW carbon dioxide fast axle stream lasers；Substrate 6 is used
Aluminum alloy materials, on the substrate face carry out cladding；Al alloy powder uses plasma electric rotating
Pole method production, the mesh of about 100 mesh of granularity -200.
The step of preparing flawless aluminum alloy materials using the said equipment is as follows：
First, water-cooled lathe will be fixed on by aluminum alloy plate materials tooling fixture used by moulding material
On table top, forming room is then closed.It is now air in working chamber, due to the cladding of aluminium alloy
Needs can just carry out cladding in oxygen content less than 80ppm, so needing first to be filled with argon gas to exclude
Air, 12-16 liters/min of flow.When the indoor oxygen content of shaping is about in 1000ppm,
Opening cleaning system further reduces oxygen content (because cleaning system works when oxygen content is higher
It is easily damaged cleaning system), just can open cladding program when oxygen content is less than 80ppm.
Then laser is opened, the pressure of high-purity carbon dioxide, high-purity He, high-purity N 2 is adjusted
Section to 0.5MPa or so, make the laser beam that laser 1 is produced by after speculum 4 in substrate
A branch of hot spot is formed on 6 and molten bath is formed；Then powder feeder 2 is opened, powder sprays by powder feeding
Converged at after mouth 5 in laser facula focus；Set powder feed rate as 5 gram/minutes, powder feeding gas
Body flow 5-6L/min.
Then, the basic cladding layer (or being initiation layer) of cladding aluminium alloy is prepared, wherein profit
The threedimensional model for cladding forming sample is set up with 3 d modeling software, will using subdivision software
Threedimensional model subdivision works out cladding control program and is loaded into digital control system according to subdivision result.
Sample threedimensional model can such as be set up.With size as 60mm × 150mm × 3.5mm
As a example by sample, the file of entitled shiyang1.prt is initially set up, then set up right angle seat
Mark system, input length, width and height are respectively the parameter of 60mm, 150mm and 3.5mm, just establish sample
The threedimensional model of product, UG is exited in deposit after model then is saved as into shiyang1.stl forms
System.The subdivision software for being carried using laser forming equipment afterwards carries out the subdivision of threedimensional model,
Subdivision software (special-purpose software) is opened, shiyang1.stl files are imported, subdivision ginseng is set
Number, CNC program input machine tool control computer 3 is automatically generated by subdivision software.Every layer is cutd open
Height is divided to be set as 0.15-0.25mm；The substrate of selection is the aluminium alloy of thickness about 8-12mm
Sheet material.After unlatching equipment operation key, laser and powder feed system and lathe start simultaneously, swash
Light beam and powder-feeding nozzle are scanned along the motion path of subdivision Software Create and move, and powder is defeated
It is sent in laser spot and forms cladding layer afterwards after fusing and solidification, so with the motion of lathe
Just continuous cladding process has been started.Sweeping for powder-feeding nozzle is adjusted when proceeding by ground floor cladding
It is 150-180 ms/h to retouch speed, and powder feed rate is 9 to 12 gram/minutes, continuous cladding
8-12 layers of formation aluminium alloy initiation layer.
Then, after the completion of aluminium alloy initiation layer cladding, using cuing open that laser forming equipment is carried
Component software carries out subdivision to threedimensional model unshaped part again.It is first turned on subdivision software (specially
With software), shiyang1.stl files are imported, subdivision parameter is set, by subdivision software certainly
Dynamic generation CNC program input machine tool control system computer.Every layer of subdivision is highly set as
0.4mm-0.6mm；The sweep speed for adjusting powder-feeding nozzle is 250-350 ms/h, powder feeding speed
Degree 8-12 gram/minutes, stabilize it cladding forming, cladding control program end of run postforming
Sample physical member is completed, and whole laser cladding forming process terminates.
The air intake valve and laser of working chamber are closed afterwards, and adjustment digital control system is manual mould
Formula, home position is adjusted to by water-cooled machine-tool platform face, opens working chamber's door and ventilation is aerated to it,
Operating personnel enter working chamber after 20min, and unnecessary Al alloy powder is removed after sample cooling to be formed
End, opens tooling fixture and substrate is removed from water-cooled machine-tool platform face, and the aluminium shaped on substrate is closed
Golden sample is aluminum alloy materials formed thereby.
Embodiment 1：The present embodiment manufacture width 60mm, 150mm high, the aluminium of wall thickness 3.5mm are closed
Golden sample.Specific manufacturing step is as follows：
The aluminum alloy plate materials of thickness about 12mm are chosen, is fixed on lathe with tooling fixture.Open
Laser is opened, laser power parameters as 800W, high-purity carbon dioxide, high-purity He, height are set
The pressure of pure N2 is adjusted to 0.5MPa or so, cooling water flow about 20L/min.By aluminium alloy
Powder loads powder feeder.The subdivision software set up model and carried using former carries out three-dimensional
The subdivision of model, every layer of subdivision is highly set as 0.15mm, the sweep speed of powder-feeding nozzle
It is set as 150 ms/h, the gram/minute of powder feed rate 10.During 10 layers of cladding, using shaping
The subdivision software that equipment is carried carries out subdivision to threedimensional model unshaped part again, and every layer is cutd open
Height is divided to be set as 0.5mm, the sweep speed of powder-feeding nozzle is set as 250 ms/h, send
The gram/minute of powder speed 8；Power is 2000W, powder feeding gas flow 12L/min.In 250-350
Between m/h the sweep speed of micro-adjustment powder-feeding nozzle make the speed of growth stabilization, when cladding into
When shape is completed, arrestment.Working chamber's air intake valve and laser are closed, by water-cooled machine-tool platform
Face is adjusted to home position, remove substrate from water-cooled machine-tool platform face after sample cooling, on substrate
The aluminum alloy sample of shaping is that size is 60mm × 150mm × 3.5mm aluminum alloy materials.
Embodiment 2：The present embodiment manufacture height width 40mm, 50mm high, the aluminium of wall thickness 10mm
Alloy sample.Specific manufacturing step is substantially the same manner as Example 1, simply in 12 layers of cladding,
The subdivision software carried using former carries out subdivision to threedimensional model unshaped part again,
Every layer of subdivision is highly set as 0.6mm, the sweep speed of powder-feeding nozzle be set as 300 meters/
Hour, the gram/minute of powder feed rate 10；Power is 2500W, powder feeding gas flow 8L/min.
The above embodiments are merely illustrative of the technical solutions of the present invention rather than is limited, this
The those of ordinary skill in field can modify to technical scheme or equally replace
Change, without departing from the spirit and scope of the present invention, protection scope of the present invention should be with claim
It is described to be defined.
Claims (10)
1. a kind of manufacturing process of aluminium alloy, methods described includes：
(1) threedimensional model of aluminium alloy is set up, and subdivision is carried out to the threedimensional model, according to
Subdivision result is worked out cladding control program and is loaded into digital control system；
(2) it is 150-180 to be arranged to control the sweep speed of powder-feeding nozzle by the digital control system
M/h, the powder feed rate of powder feed system is set as 9 to 12 gram/minutes, and will be molten
The subdivision for covering every layer in control program is highly set as 0.15-0.25mm, the cladding on substrate
8-12 layers, so that basis of formation cladding layer；
(3) sweep speed of powder-feeding nozzle is adjusted to 250-350 ms/h again, while will
The powder feed rate of powder feed system is adjusted to 8-12 gram/minutes, and every layer is cutd open in cladding control program
Divide Height Adjustment to be 0.5-1.0mm, uniform and stable shaping carried out on the basic cladding layer,
Until forming process terminates.
2. the method for claim 1, it is characterised in that：The material of the substrate is
The aluminium alloy of titaniferous.
3. method as claimed in claim 1 or 2, it is characterised in that：The material of the substrate
Material thickness is 8-12mm.
4. method as claimed any one in claims 1 to 3, it is characterised in that：It is described
Oxygen content in the working chamber of cladding is less than 80ppm.
5. the method as any one of Claims 1-4, it is characterised in that：First
Argon gas is filled with working chamber to exclude air, 12-16 liters/min of argon flow amount works as shaping
About in 1000ppm, open cleaning system makes oxygen content be less than 100ppm to indoor oxygen content.
6. the method as any one of claim 1 to 5, it is characterised in that：It is described
The granularity about 50-300 mesh of the Al alloy powder that powder feed system is used.
7. the method for claim 1, it is characterised in that：Form the basic cladding
During layer, laser power parameters as 500-1000W are set.
8. method according to any one of claim 1 to 7, it is characterised in that：Enter
During the row uniform and stable shaping, laser power parameters as 1500-2500W are set.
9. method according to any one of claim 1 to 7, it is characterised in that：Institute
State the granularity about 100-200 mesh of the Al alloy powder of powder feed system use.
10. method according to any one of claim 1 to 7, it is characterised in that：：
When forming the basic cladding layer, laser power parameters as 600-800W are set.
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| WO2019029031A1 (en) * | 2017-08-07 | 2019-02-14 | 华南理工大学 | Additive manufacturing method for lead-free environmentally-friendly high-strength brass alloy |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019029031A1 (en) * | 2017-08-07 | 2019-02-14 | 华南理工大学 | Additive manufacturing method for lead-free environmentally-friendly high-strength brass alloy |
| US11401588B2 (en) | 2017-08-07 | 2022-08-02 | South China University Of Technology | Additive manufacturing method of lead-free environmentally-friendly high-strength brass alloy |
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