CN115652153A - 3D printing aluminum alloy powder for hand plate additive manufacturing and preparation method thereof - Google Patents
3D printing aluminum alloy powder for hand plate additive manufacturing and preparation method thereof Download PDFInfo
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Abstract
The invention relates to the technical field of aluminum alloy, and provides 3D printing aluminum alloy powder for additive manufacturing of a hand plate and a preparation method thereof. In 3D printing aluminum alloy powder for hand plate additive manufacturing, the aluminum alloy powder comprises the following components in percentage by mass: copper: 0.15% to 0.4%; magnesium: 0.2% to 4%; manganese: 0.001% to 0.4%; zinc: 0.001% to 0.5%; chromium: 0.04% to 0.8%; titanium: 0.01% to 4%; silicon: 0.4% to 0.8%; iron: 0.6% to 0.8%; the balance being aluminum and unavoidable impurities. The 3D printing aluminum alloy powder provided by the invention is easy to oxidize and color and is not easy to cause the problem of printing cracking.
Description
Technical Field
The invention relates to the technical field of aluminum-based alloy, in particular to 3D printing aluminum alloy powder for additive manufacturing of a hand plate and a preparation method thereof.
Background
For a product just developed or designed, it is usually necessary to verify the feasibility of the product by making a hand plate. The manufacture of the hand plate is the most direct and effective way to find out the defects, shortcomings and drawbacks of the designed product. The defects found in the process of manufacturing the hand plate are improved in a targeted manner, so that manpower and material resources can be saved, and the research and development period is shortened.
The 3D printing is a forming manufacturing technology which combines materials, machinery, a computer and numerical control into a whole, a mold is not needed in the preparation process for direct forming, the material consumption can be greatly reduced in the aspects of single customization and complex part forming, the manufacturing period is shortened, the method is an important supplement of traditional processing modes such as casting, forging and welding, the development requirement of future advanced forming manufacturing technology can be met, and the method is widely applied to the fields of aerospace, ship, automobile manufacturing and the like.
In recent years, 3D printing technology has been gradually emerging and is increasingly used in the hand plate processing and manufacturing industry. The 3D printing material for the additive manufacturing of the hand plate is mainly AlSi10Mg cast aluminum alloy at present. The AlSi10Mg cast aluminum alloy has many advantages such as low density and good corrosion resistance, and thus is widely used in aviation, instruments and general machinery. The 3D printing process of the AlSi10Mg cast aluminum alloy is relatively mature, and the AlSi10Mg cast aluminum alloy powder material is very easy to form. However, the material has the disadvantages that the material has difficulty in the subsequent oxidation coloring process, and the material has high oxidation coloring difficulty, is not uniform and is easy to peel off. Correspondingly, the coloring of the AlSi10Mg hand plate piece still needs to adopt the mode of spraying paint at present, and the mode of spraying paint has the defects of large pollution, uneven coloring and easy paint dropping, and influences the quality of the hand plate.
Therefore, how to provide a 3D printing aluminum alloy powder which is easy to oxidize and color and is not easy to cause a printing cracking problem becomes a technical problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: how to provide one kind and easily oxidize and color to 3D who is difficult for appearing the printing fracture problem prints aluminum alloy powder.
In order to solve the above problems, the invention provides 3D printing aluminum alloy powder for hand plate additive manufacturing, which comprises the following components in percentage by mass: copper: 0.15% to 0.4%; magnesium: 0.2% to 4%; manganese: 0.001% to 0.4%; zinc: 0.001% to 0.5%; chromium: 0.04% to 0.8%; titanium: 0.01% to 4%; silicon: 0.4% to 0.8%; iron: 0.6% to 0.8%; the balance being aluminum and unavoidable impurities.
Further, the content of the magnesium is 0.8% to 1.2%.
Further, the content of the zinc is 0.001 to 0.25%.
Further, the content of the titanium is 0.5% to 1.5%.
Further, the content of iron is 0.7%.
The invention also provides a preparation method of the 3D printing aluminum alloy powder for the additive manufacturing of the hand plate, which comprises the following steps:
s100, mixing the raw materials except titanium according to a target proportion to obtain an aluminum alloy raw material, and smelting the aluminum alloy raw material to obtain an aluminum alloy molten mass;
s200, atomizing the aluminum alloy melt, screening after atomization to obtain aluminum alloy powder, adding powdery titanium into the aluminum alloy powder according to the target proportion, and uniformly mixing to obtain the aluminum alloy powder;
wherein the target mixture ratio is as follows in percentage by mass: copper: 0.15% to 0.4%; magnesium: 0.2% to 4%; manganese: 0.001% to 0.4%; zinc: 0.001% to 0.5%; chromium: 0.04% to 0.8%; titanium: 0.01% to 4%; silicon: 0.4% to 0.8%; iron: 0.6% to 0.8%; the balance being aluminum and unavoidable impurities.
Further, the content of the magnesium is 0.8% to 1.2%.
Further, the content of the zinc is 0.001 to 0.25%.
Further, the content of the titanium is 0.5% to 1.5%.
Further, the content of iron is 0.7%.
Further, in the S100, the temperature of the melting is 600 to 700 ℃.
Further, in the S100, the time of the melting is 30min to 40min.
Further, in S100, the smelting is performed under a protective atmosphere of an inert gas.
Further, before the S200, the aluminum alloy melt is subjected to heat preservation for 20min to 30min.
Further, in the S200, the pressure of the atomization is 4MPa to 6MPa.
Further, in the S200, the temperature of the atomization is controlled at 750 ℃ to 800 ℃.
Further, in S200, the atomized medium is an inert gas.
Further, in S200, the screening standard of the aluminum alloy powder is as follows: the particle size is 15-75 μm.
Further, in S200, the screening standard of the aluminum alloy powder is as follows: the particle size is 15-53 μm.
Further, in S200, the aluminum alloy powder is mixed with titanium by mechanical mixing.
The invention also provides a use method of the 3D printing aluminum alloy powder, which uses the aluminum alloy powder of any one of the technical schemes to manufacture the hand plate additive through a 3D printing technology.
The invention has the following beneficial effects: the invention provides 3D printing aluminum alloy powder for hand plate additive manufacturing, which takes aluminum as a main base material and is added with silicon and a plurality of metal elements in a matching way, and the basic preparation process sequentially comprises the following steps: mixing and smelting raw materials except titanium, atomizing, and adding titanium powder. In the 3D printing aluminum alloy powder, an aluminum element is cooperatively matched with elements such as copper, magnesium, manganese, zinc, chromium, titanium, silicon, iron and the like. Wherein, the copper element and the iron element can generate a composite phase with the aluminum element, thereby improving the mechanical strength of the aluminum alloy. The magnesium element can limit the grain size of the aluminum-iron phase and avoid the oversize of the aluminum-iron phase grains. Manganese is used for increasing the recrystallization temperature of the aluminum alloy and limiting the recrystallization of the aluminum alloy. The corrosion resistance of the aluminum alloy can be further improved by adding the elements of zinc, chromium and silicon. The cracking problem of aluminum alloy in the 3D printing process can be effectively avoided through the addition of the titanium element. In particular, aluminum alloys belong to solidification cracking sensitive materials, which are prone to form a large amount of thermal cracks along dendrite boundaries in the rapid directional solidification stage of additive manufacturing, so that the aluminum alloys (particularly 6-series aluminum alloys) have poor print formability. The performance of the aluminum alloy used in the additive manufacturing is inhibited by regulating and controlling the titanium powder, and the cracking problem is avoided or reduced. In addition, the post-treatment oxidation coloring process of the aluminum alloy powder after mechanical processing and forming is stable and mature, has better oxidation coloring characteristic than AlSi10Mg cast aluminum alloy, and has wide future application space.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a diagram of the state of the printed structure obtained by a laser of 200W using a 6061 aluminum alloy of comparative example 1 at different scanning speeds using a 1000-speed apparatus;
FIG. 2 is a state diagram of a printed structure obtained by a laser of 250W using 6061 aluminum alloy of comparative example 1 at different scanning speeds using a 1000-speed apparatus;
FIG. 3 is a printed as-deposited texture map of the aluminum alloy prepared in example 5 printed with a 200W laser at different scanning speeds using a 1000-speed apparatus;
FIG. 4 is a graph of the texture of the aluminum alloy of example 5 printed with a 300W laser at different scanning speeds using a 1000-speed apparatus.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be described in further detail with reference to specific embodiments. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below. The following technical features of the embodiments of the present invention may be combined with each other without conflict.
The invention aims to provide 3D printing aluminum alloy powder particularly suitable for hand plate additive manufacturing, and the 3D printing aluminum alloy powder is 6061 aluminum alloy. 6061 aluminum alloy is an aluminum alloy material widely used in manufacturing industry, and has mature production process, large yield, lower cost, and stable and mature post-treatment oxidation coloring process after mechanical processing and forming, so the 6061 aluminum alloy material has wide application prospect in the hand plate processing industry.
However, in recent years, 3D printing technology has been gradually emerging and is increasingly used in the hand board processing and manufacturing industry. 6061 aluminum alloy has some technical bottlenecks in the field of 3D printing hand plate manufacturing. This is because high strength 6-series aluminum alloys are solidification cracking sensitive materials, which generally form a large amount of thermal cracks along dendritic grain boundaries in the rapid directional solidification stage of additive manufacturing, and therefore have poor print formability.
Therefore, the 6061 aluminum alloy with low cost and mature process is difficult to popularize in the 3D printing hand plate manufacturing industry. In order to improve the printing forming performance of the 6061 aluminum alloy and avoid the problem that the 6061 aluminum alloy cracks in the 3D printing process, the titanium element is added into the 6061 aluminum alloy.
Without being bound to any theory, the applicant believes that the main principle of the invention for achieving the above effect is as follows: titanium and aluminum can generate in-situ chemical reaction in the smelting process to generate Al 3 Ti intermetallic compound nanoparticles, and the Al 3 The Ti intermetallic compound is uniformly distributed in the aluminum matrix. High interface matched Al 3 Ti nanoparticles as effective nucleating agent for aluminum alloy can greatly promote coarsenessThe transformation of the dendrites into fine equiaxed crystals, thereby inhibiting intergranular cracking and crack propagation. In addition, solute element titanium is added into the aluminum alloy, a composition supercooling zone can be rapidly generated in the solidification process, and heterogeneous nucleation is thermodynamically favored. In conclusion, the aluminum alloy powder added with titanium can solve the problems that aluminum alloy (especially 6-series aluminum alloy) is easy to crack and has poor mechanical property in the 3D printing process, and reduces the sensitivity of cracks in the SLM (Selective laser melting) printing process, so that the aluminum alloy hand plate which is free of cracks, few in air holes, excellent in mechanical property and strong in corrosion resistance is printed.
In conclusion, the titanium is added, so that the problem that the traditional 6061 aluminum alloy powder is cracked in the printing process is solved, the characteristic of easy oxidation and coloring is maintained, the laser additive manufacturing and processing technology is almost the same as the original aluminum alloy technology, good technology continuity is maintained, and meanwhile, the cost is not changed greatly.
In order to achieve the purpose, the invention provides a preparation method of 3D printing aluminum alloy powder for hand plate additive manufacturing, which comprises the following steps:
s100, mixing the raw materials except titanium according to a target proportion to obtain an aluminum alloy raw material, and smelting the aluminum alloy raw material to obtain an aluminum alloy molten mass;
s200, atomizing the aluminum alloy melt, screening after atomization to obtain aluminum alloy powder, adding powdery titanium into the aluminum alloy powder according to a target proportion, and uniformly mixing to obtain the aluminum alloy powder.
The raw materials and equipment adopted in the steps can be obtained by commercial purchase. The printing aluminum alloy powder adopted by the invention is 6 series aluminum alloy. The material comprises the following components in percentage by mass: copper: 0.15% to 0.4%; magnesium: 0.2% to 4%; manganese: 0.001% to 0.4%; zinc: 0.001% to 0.5%; chromium: 0.04% to 0.8%; titanium: 0.01% to 4%; silicon: 0.4% to 0.8%; iron: 0.6% to 0.8%; the balance being aluminum and unavoidable impurities.
The purpose of the steps is to mix various powder raw materials with each other to prepare alloy powder. Wherein, the smelting step can be carried out by adopting a vacuum smelting furnace, and the atomizing step can be carried out by adopting an atomizing tower.
It can be understood that before vacuum melting, the vacuum melting furnace needs to be vacuumized. Illustratively, the introduction of a protective gas such as nitrogen or argon into the vacuum melting furnace may be started under a vacuum degree of less than 0.2 Pa. When the pressure in the vacuum chamber of the vacuum melting furnace reaches about 0.2MPa, the vacuum melting furnace can be started to be heated by power transmission.
It is understood that the parameters of the vacuum melting temperature and time, the atomizing temperature and pressure, the particle size range of the screening, etc. can be selected and adjusted by those skilled in the art according to the amount and kind of the raw materials.
It will be appreciated that after atomisation, drying may be carried out and, after drying has ended, screening may be carried out. Illustratively, the temperature of the drying treatment is 80 ℃ to 100 ℃, and the drying time is 2h to 4h. The drying may be infrared drying or hot air drying. After the drying treatment, the drying treatment may be carried out by degassing and then sieving.
Specifically, in S100, the smelting temperature is 600-700 ℃, the smelting time is 30-40 min, and the smelting is carried out under the protective atmosphere of inert gas. The aluminum alloy melt may be held for 20min to 30min before S200. In S200, the atomization pressure is 4MPa to 6MPa, the atomization temperature is controlled to be 750 ℃ to 800 ℃, the atomization medium is inert gas, and the screening standard of the aluminum alloy powder is as follows: the particle size is 15-75 μm. Preferably, in S200, the screening criteria of the aluminum alloy powder are: the particle size is 15-53 μm.
Specific examples of the present invention are as follows.
Example 1
This embodiment has prepared a 3D and has printed aluminum alloy powder, and by mass percent, this aluminum alloy powder includes: copper: 0.15 percent; magnesium: 4 percent; manganese: 0.4 percent; zinc: 0.5 percent; chromium: 0.8 percent; titanium: 0.1 percent; silicon: 0.4 percent; iron: 0.6 percent; the balance of aluminum and inevitable impurities, and the preparation process comprises the following steps:
s1, mixing the raw materials except titanium according to the proportion, feeding the mixture into a vacuum smelting furnace, vacuumizing the vacuum smelting furnace, introducing nitrogen into the vacuum smelting furnace under the condition that the vacuum degree is lower than 0.2Pa, transmitting power for heating when the pressure in a vacuum chamber reaches 0.2 +/-0.05 MPa, and smelting the raw materials at the temperature of 600 ℃ for 30min to obtain a molten mass;
s2, feeding the molten mass into an atomizing tower, atomizing under the pressure condition of 4 +/-0.5 MPa and the temperature condition of 750 ℃ by taking nitrogen as an atomizing medium, drying after atomizing, and sieving according to the standard of the particle size of 15-53 mu m to obtain aluminum alloy powder;
and S3, adding powdery titanium into the aluminum alloy powder according to the mixture ratio, and grinding for 1h in a planetary ball mill by a dry method, wherein a ball-milling medium is zirconia balls, and the material-ball ratio is 1.5.
Example 2
This embodiment has prepared a 3D and has printed aluminum alloy powder, and by mass percent, this aluminum alloy powder includes: copper: 0.2 percent; magnesium: 2 percent; manganese: 0.2 percent; zinc: 0.2 percent; chromium: 0.4 percent; titanium: 1 percent; silicon: 0.8 percent; iron: 0.6 percent; the balance of aluminum and inevitable impurities, and the preparation process comprises the following steps:
s1, mixing the raw materials except titanium according to the proportion, feeding the mixture into a vacuum smelting furnace, vacuumizing the vacuum smelting furnace, introducing nitrogen into the vacuum smelting furnace under the condition that the vacuum degree is lower than 0.2Pa, transmitting power for heating when the pressure in a vacuum chamber reaches 0.2 +/-0.05 MPa, and smelting the raw materials at the temperature of 600 ℃ for 30min to obtain a molten mass;
s2, feeding the molten mass into an atomizing tower, atomizing under the pressure condition of 4 +/-0.5 MPa and the temperature condition of 750 ℃ by taking nitrogen as an atomizing medium, drying after atomizing, and sieving according to the standard of the grain diameter of 10-50 mu m to obtain aluminum alloy powder;
and S3, adding powdery titanium into the aluminum alloy powder according to the mixture ratio, and grinding for 1h in a planetary ball mill by a dry method, wherein a ball-milling medium is zirconia balls, and the material-ball ratio is 1.5.
Example 3
This embodiment has prepared a 3D and has printed aluminum alloy powder, and by mass percent, this aluminum alloy powder includes: copper: 0.2 percent; magnesium: 1 percent; manganese: 0.1 percent; zinc: 0.1 percent; chromium: 0.6 percent; titanium: 2 percent; silicon: 0.4 percent; iron: 0.7 percent; the balance of aluminum and inevitable impurities, and the preparation process comprises the following steps:
s1, mixing the raw materials except titanium according to the proportion, feeding the mixture into a vacuum smelting furnace, vacuumizing the vacuum smelting furnace, introducing nitrogen into the vacuum smelting furnace under the condition that the vacuum degree is lower than 0.2Pa, transmitting power for heating when the pressure in a vacuum chamber reaches 0.2 +/-0.05 MPa, and smelting the raw materials at 640 ℃ for 30min to obtain a molten mass;
s2, feeding the molten mass into an atomizing tower, atomizing under the pressure condition of 4 +/-0.5 MPa and the temperature condition of 780 ℃ by taking nitrogen as an atomizing medium, drying after atomizing, and sieving according to the standard of the grain diameter of 10-50 mu m to obtain aluminum alloy powder;
and S3, adding powdery titanium into the aluminum alloy powder according to the mixture ratio, and grinding for 2h in a planetary ball mill by a dry method, wherein a ball-milling medium is zirconia balls, and the material-ball ratio is 1.5.
Example 4
This embodiment has prepared a 3D and has printed aluminum alloy powder, and by mass percent, this aluminum alloy powder includes: copper: 0.15 percent; magnesium: 0.2 percent; manganese: 0.1 percent; zinc: 0.1 percent; chromium: 0.04 percent; titanium: 4 percent; silicon: 0.6 percent; iron: 0.7 percent; the balance of aluminum and inevitable impurities, and the preparation process comprises the following steps:
s1, mixing the raw materials except titanium according to the proportion, feeding the mixture into a vacuum smelting furnace, vacuumizing the vacuum smelting furnace, introducing nitrogen into the vacuum smelting furnace under the condition that the vacuum degree is lower than 0.2Pa, transmitting power for heating when the pressure in a vacuum chamber reaches 0.2 +/-0.05 MPa, and smelting the raw materials at 640 ℃ for 30min to obtain a molten mass;
s2, feeding the molten mass into an atomizing tower, atomizing under the pressure condition of 4 +/-0.5 MPa and the temperature condition of 780 ℃ by taking nitrogen as an atomizing medium, drying after atomizing, and sieving according to the standard of the grain diameter of 10-50 mu m to obtain aluminum alloy powder;
and S3, adding powdery titanium into the aluminum alloy powder according to the mixture ratio, and grinding for 2h in a planetary ball mill by a dry method, wherein a ball-milling medium is zirconia balls, and the material-ball ratio is 1.5.
Example 5
The aluminum alloy powder used in example 5 includes, by mass: copper: 0.3 percent; chromium: 0.25 percent; silicon: 0.6 percent; titanium: 1 percent; the balance being aluminum and unavoidable impurities. The preparation process comprises the following steps:
s1, mixing the raw materials except titanium according to the proportion, feeding the mixture into a vacuum smelting furnace, vacuumizing the vacuum smelting furnace, introducing nitrogen into the vacuum smelting furnace under the condition that the vacuum degree is lower than 0.2Pa, transmitting power for heating when the pressure in a vacuum chamber reaches 0.2 +/-0.05 MPa, and smelting the raw materials at the temperature of 600 ℃ for 30min to obtain a molten mass;
s2, feeding the molten mass into an atomizing tower, atomizing under the pressure condition of 4 +/-0.5 MPa and the temperature condition of 750 ℃ by taking nitrogen as an atomizing medium, drying after atomizing, and sieving according to the standard of the grain diameter of 10-50 mu m to obtain aluminum alloy powder;
and S3, adding powdery titanium into the aluminum alloy powder according to the proportion, and grinding for 2 hours in a planet ball mill by a dry method, wherein a ball-milling medium is zirconia balls, and the material-ball ratio is 1.5.
Comparative example 1
The aluminum alloy powder adopted in comparative example 1 comprises, by mass: copper: 0.3 percent; chromium: 0.25 percent; silicon: 0.6 percent; the balance being aluminum and unavoidable impurities. The aluminum alloy powder used in comparative example 1 was obtained by a commercial purchase.
Performance testing
Fig. 1 is a diagram of the state of the printed structure obtained by a laser of 200W using a 6061 aluminum alloy of comparative example 1 at different scanning speeds using a 1000-speed apparatus. The technological parameter is energy density 45.3Ed (J/mm) 3 ) Printing power 200W, layer thickness 40 μm, spot diameter 200 μm, and scanning pitch 120 μm. As shown in FIG. 1The surface and the inside of the workpiece are provided with a large number of cracks, and the workpiece post-treatment and further use work are influenced.
Fig. 2 is a state diagram of a printed structure obtained by a 1000-speed apparatus at different scanning speeds, using 6061 aluminum alloy of comparative example 1 for printing with a 250W laser. After the power is increased to 250W, although the holes are reduced, cracks still exist and are difficult to close, the relative density is only 98.53% at the highest under the set of process parameters, and the Vickers hardness is 67.3.
FIG. 3 is a printed as-deposited texture map of the aluminum alloy prepared in example 5 printed with a 200W laser at different scanning speeds using a 1000-speed apparatus. FIG. 4 is a graph of the texture of the aluminum alloy of example 5 printed with a 300W laser at different scanning speeds using a 1000-speed apparatus. As shown in FIG. 3 and FIG. 4, after the composition adjustment and the process improvement, no obvious cracks and defects are basically observed in the 3D printed as-deposited structure under the process conditions of the laser power of 200W and the scanning speed of 900mm/s in FIG. 3, and when the power is increased to 300W and the scanning speed is 1350mm/s, few defects and cracks are observed in the structure, which proves that the generation of cracks is effectively inhibited by the addition of titanium, the relative density can reach 99.95%, and the Vickers hardness is 88.8.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The 3D printing aluminum alloy powder for the additive manufacturing of the hand plate is characterized by comprising the following components in percentage by mass: copper: 0.15% to 0.4%; magnesium: 0.2% to 4%; manganese: 0.001% to 0.4%; zinc: 0.001% to 0.5%; chromium: 0.04% to 0.8%; titanium: 0.01% to 4%; silicon: 0.4% to 0.8%; iron: 0.6% to 0.8%; the balance being aluminum and unavoidable impurities.
2. The 3D printing aluminum alloy powder according to claim 1,
the content of the magnesium is 0.8 to 1.2 percent; and/or
The content of the zinc is 0.001 to 0.25 percent; and/or
The content of the titanium is 0.5 to 1.5 percent; and/or
The content of the iron is 0.7%.
3. A preparation method of 3D printing aluminum alloy powder for hand plate additive manufacturing is characterized by comprising the following steps:
s100, mixing the raw materials except titanium according to a target proportion to obtain an aluminum alloy raw material, and smelting the aluminum alloy raw material to obtain an aluminum alloy molten mass;
s200, atomizing the aluminum alloy melt, screening after atomization to obtain aluminum alloy powder, adding powdery titanium into the aluminum alloy powder according to the target proportion, and uniformly mixing to obtain the aluminum alloy powder;
wherein the target mixture ratio is as follows in percentage by mass: copper: 0.15% to 0.4%; magnesium: 0.2% to 4%; manganese: 0.001% to 0.4%; zinc: 0.001% to 0.5%; chromium: 0.04% to 0.8%; titanium: 0.01% to 4%; silicon: 0.4% to 0.8%; iron: 0.6% to 0.8%; the balance being aluminum and unavoidable impurities.
4. The production method according to claim 3,
the content of the magnesium is 0.8 to 1.2 percent; and/or
The content of the zinc is 0.001 to 0.25 percent; and/or
The content of the titanium is 0.5 to 1.5 percent; and/or
The content of the iron is 0.7%.
5. The production method according to claim 3,
in the S100, the temperature of the smelting is 600-700 ℃; and/or
In the S100, the smelting time is 30-40 min; and/or
In S100, the melting is performed under a protective atmosphere of an inert gas.
6. The production method according to claim 3,
holding the aluminum alloy melt for 20min to 30min before the S200; and/or
In the S200, the atomization pressure is 4MPa to 6MPa; and/or
In the S200, the temperature of the atomization is controlled to be 750 ℃ to 800 ℃; and/or
In S200, the atomized medium is an inert gas.
7. The production method according to claim 3,
in the step S200, the screening standard of the aluminum alloy powder is as follows: the particle size is 15-75 μm.
8. The production method according to claim 7,
in the step S200, the screening standard of the aluminum alloy powder is as follows: the particle size is 15-53 μm.
9. The production method according to any one of claims 3 to 8,
in the step S200, the aluminum alloy powder is mixed with titanium in a mechanical mixing mode.
10. The use method of the 3D printing aluminum alloy powder is characterized in that the aluminum alloy powder as described in claim 1 or 2 is used for manufacturing a hand plate additive through a 3D printing technology.
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| JP2005042187A (en) * | 2003-07-25 | 2005-02-17 | Mitsubishi Alum Co Ltd | Aluminum alloy sheet for planographic printing plate, its manufacturing method, and planographic printing plate |
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| JP2005042187A (en) * | 2003-07-25 | 2005-02-17 | Mitsubishi Alum Co Ltd | Aluminum alloy sheet for planographic printing plate, its manufacturing method, and planographic printing plate |
| CN104755197A (en) * | 2012-11-01 | 2015-07-01 | 通用电气公司 | Additive manufacturing method and apparatus |
| CN112746205A (en) * | 2020-12-29 | 2021-05-04 | 江西宝航新材料有限公司 | Aluminum alloy powder for manufacturing radiating element, preparation method and printing process thereof |
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