CN115558818A - Magnesium-aluminum alloy production and manufacturing process - Google Patents
Magnesium-aluminum alloy production and manufacturing process Download PDFInfo
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- CN115558818A CN115558818A CN202211193649.0A CN202211193649A CN115558818A CN 115558818 A CN115558818 A CN 115558818A CN 202211193649 A CN202211193649 A CN 202211193649A CN 115558818 A CN115558818 A CN 115558818A
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- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 70
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 33
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000011777 magnesium Substances 0.000 claims abstract description 40
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 38
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 35
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 31
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 30
- 239000000956 alloy Substances 0.000 claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- 238000005219 brazing Methods 0.000 claims abstract description 14
- 239000000945 filler Substances 0.000 claims abstract description 14
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 238000007493 shaping process Methods 0.000 claims abstract description 6
- 239000007888 film coating Substances 0.000 claims abstract description 5
- 238000009501 film coating Methods 0.000 claims abstract description 5
- 238000002161 passivation Methods 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims description 17
- CFQGDIWRTHFZMQ-UHFFFAOYSA-N argon helium Chemical compound [He].[Ar] CFQGDIWRTHFZMQ-UHFFFAOYSA-N 0.000 claims description 16
- 238000005096 rolling process Methods 0.000 claims description 9
- 238000003723 Smelting Methods 0.000 claims description 5
- 229910001094 6061 aluminium alloy Inorganic materials 0.000 claims description 4
- 229910000553 6063 aluminium alloy Inorganic materials 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 claims 1
- 238000013329 compounding Methods 0.000 claims 1
- 238000005498 polishing Methods 0.000 claims 1
- 238000002844 melting Methods 0.000 description 10
- 230000008018 melting Effects 0.000 description 10
- 230000007797 corrosion Effects 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 8
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- -1 Mg2+ ions Chemical class 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/03—Making non-ferrous alloys by melting using master alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
- C22C23/02—Alloys based on magnesium with aluminium as the next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B2003/001—Aluminium or its alloys
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
Abstract
The invention relates to the technical field of magnesium-aluminum alloy, and discloses a magnesium-aluminum alloy production and manufacturing process, which comprises the following steps: selecting materials which are 45-50% of magnesium and 45-50% of aluminum respectively; respectively heating magnesium and aluminum, and fusing the heated magnesium and aluminum together to obtain an alloy block brazing filler metal; preparing the alloy block brazing filler metal into a required rectangular or rectangular blank material; shaping blank materials; the molded magnesium-aluminum alloy is subjected to film coating passivation, oil coating and wax paper coating, and is stored for later use, the tensile strength of the magnesium-aluminum alloy is 235MPa, the elongation is 6.3, and the magnesium-aluminum alloy is far stronger than aluminum alloy or magnesium-aluminum alloy prepared in the prior art, so that the scheme has a great use prospect.
Description
Technical Field
The invention relates to the technical field of magnesium-aluminum alloy, in particular to a production and manufacturing process of magnesium-aluminum alloy.
Background
Aluminum alloys are the most widely used non-ferrous structural materials in the industry at present, and have been used in a large number of applications in the aerospace, automotive, mechanical manufacturing, marine and chemical industries. With the rapid development of science and technology and industrial economy in recent years, the demand on aluminum alloy welding structural parts is increasing, and the research on the weldability of aluminum alloy is also deepened.
The magnesium-aluminum alloy is formed by melting magnesium ingots and aluminum ingots in protective gas at high temperature, and the composition of the magnesium-aluminum alloy has two expressions of simple physical mixing and physical mixing with changed crystal structures.
The existing aluminum material has certain limitation, and a magnesium-aluminum alloy production and manufacturing process is provided for the limitation.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a magnesium-aluminum alloy production and manufacturing process, which solves the problems.
(II) technical scheme
In order to achieve the above purpose, the invention provides the following technical scheme: a production manufacturing process of magnesium-aluminum alloy comprises the following steps:
the first step is as follows: selecting materials which are 45-50% of magnesium and 45-50% of aluminum respectively;
the second step: respectively heating magnesium and aluminum, and fusing the heated magnesium and aluminum together to obtain an alloy block brazing filler metal;
the third step: preparing the alloy block brazing filler metal into a required rectangular or rectangular blank material;
the fourth step: shaping the blank material;
the fifth step: and (4) performing film coating passivation, oil coating and wax paper coating on the molded magnesium-aluminum alloy, and storing for later use.
Preferably, the aluminum is any one of 6063 aluminum alloy, 6061 aluminum alloy, 6082 aluminum alloy, 6160 aluminum alloy, 6125 aluminum alloy, 6262 aluminum alloy, 6060 aluminum alloy, 6005 aluminum alloy and 6463 aluminum alloy.
Preferably, the second step is as follows:
s1: putting magnesium and aluminum into a sealed crucible; .
S2: meanwhile, continuously introducing argon-helium mixed gas into the crucible, and exhausting air in the crucible until the argon-helium mixed gas fills the inner space of the crucible;
s3: under the protection of argon-helium mixed gas, heating and smelting magnesium and aluminum, firstly heating to 650 ℃, gradually melting magnesium, increasing the temperature to 670 ℃ by five degrees centigrade per minute, melting aluminum when the temperature is 660 ℃, completely melting the alloy after heating to 670 ℃, and preserving heat for 20min and 30min to relatively homogenize the components of the molten alloy.
S4: and continuously cooling the alloy melt to form the alloy brazing filler metal under the protection of argon-helium mixed gas.
Preferably, the surface of the blank material is polished by 500-mesh paper and then cleaned by alcohol, the blank material is placed into a resistance furnace to be heated to 350 ℃, the temperature is kept for 15min, and then the blank material is immediately sent into a rolling mill to be rolled and compounded, wherein the rolling speed is 10rmin, and the pressing amount is 30. The molded magnesium-aluminum alloy is obtained, the tensile strength is 235MPa, and the elongation is 6.3.
(III) advantageous effects
Compared with the prior art, the invention provides a production and manufacturing process of magnesium-aluminum alloy, which has the following beneficial effects:
1. according to the magnesium-aluminum alloy production and manufacturing process, the tensile strength of the magnesium-aluminum alloy is 235MPa, the elongation is 6.3, and the tensile strength is far stronger than that of an aluminum alloy or a magnesium-aluminum alloy prepared in the prior art, so that the scheme has a wide application prospect.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in the indicated orientations and positional relationships based on the drawings for convenience in describing and simplifying the description, but do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; the connection can be mechanical connection, electrical connection or communication connection; the term "coupled" as used herein refers to a connection that is either direct or indirect through an intermediary, and may be internal or interconnected, unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The technical means of the present invention will be described in detail with reference to specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
The first embodiment is as follows: a production manufacturing process of magnesium-aluminum alloy comprises the following steps:
the first step is as follows: selecting materials which are respectively 45% of magnesium and 45% of aluminum.
The aluminum is any one of 6063 aluminum alloy, 6061 aluminum alloy, 6082 aluminum alloy, 6160 aluminum alloy, 6125 aluminum alloy, 6262 aluminum alloy, 6060 aluminum alloy, 6005 aluminum alloy and 6463 aluminum alloy.
The second step is that: respectively heating magnesium and aluminum, and fusing the heated magnesium and aluminum together to obtain an alloy block brazing filler metal;
s1: putting magnesium and aluminum into a sealed crucible;
s2: meanwhile, continuously introducing argon-helium mixed gas into the crucible, and discharging the air in the crucible until the argon-helium mixed gas fills the inner space of the crucible;
s3: under the protection of argon-helium mixed gas, heating and smelting magnesium and aluminum, firstly heating to 650 ℃, gradually melting magnesium, increasing the temperature to 670 ℃ by five degrees centigrade per minute, melting aluminum when the temperature is 660 ℃, completely melting the alloy after heating to 670 ℃, and preserving heat for 20min and 30min to relatively homogenize the components of the molten alloy.
S4: and continuously cooling the alloy melt to form the alloy brazing filler metal under the protection of argon-helium mixed gas.
The third step: preparing the alloy block brazing filler metal into a required rectangular or rectangular blank material;
the fourth step: shaping the blank material;
the surface of a blank material is polished by 500 abrasive paper and then cleaned by alcohol, the blank material is put into a resistance furnace to be heated to 350, the temperature is kept for 15min and then the blank material is immediately sent into a rolling mill to be rolled and compounded, the rolling speed is 10rmin, and the pressing amount is 30. The molded magnesium-aluminum alloy is obtained, the tensile strength is 235MPa, and the elongation is 6.3.
The fifth step: and (4) performing film coating passivation, oil coating and wax paper coating on the molded magnesium-aluminum alloy, and storing for later use.
Magnesium metal is one of the worst metals with corrosion resistance, and is corroded in acidic, neutral and weakly alkaline solutions to become Mg2+ ions, various types of atmosphere generate corrosion effects on magnesium to different degrees, a layer of dull loose porous oxide film is formed on the surface of the magnesium metal in dry air, and in humid atmosphere, the generated product has the composition of Mgco 3.3H2O + Mgso 4.7H2o + Mg (OH) 2. The atmospheric humidity is increased, sulfur dioxide, chloride and other substances contained in the atmosphere of industrial areas and marine environments can intensify the corrosion of magnesium, and chloride impurities and iron impurities in magnesium can accelerate the corrosion of magnesium.
The second embodiment: a production manufacturing process of magnesium-aluminum alloy comprises the following steps:
the first step is as follows: selecting materials which are respectively 50% of magnesium and 50% of aluminum.
The aluminum is any one of 6063 aluminum alloy, 6061 aluminum alloy, 6082 aluminum alloy, 6160 aluminum alloy, 6125 aluminum alloy, 6262 aluminum alloy, 6060 aluminum alloy, 6005 aluminum alloy and 6463 aluminum alloy.
The second step is that: respectively heating magnesium and aluminum, and fusing the heated magnesium and aluminum together to obtain an alloy block brazing filler metal;
s1: putting magnesium and aluminum into a sealed crucible; .
S2: meanwhile, continuously introducing argon-helium mixed gas into the crucible, and exhausting air in the crucible until the argon-helium mixed gas fills the inner space of the crucible;
s3: heating and smelting magnesium and aluminum under the protection of argon-helium mixed gas, firstly heating to 650 ℃, gradually melting magnesium, increasing the temperature to 670 ℃ at five degrees centigrade per minute, melting aluminum when 660 ℃, completely melting the alloy after heating to 670 ℃, and preserving heat for 20min and 30min to relatively homogenize the components of the alloy melt.
S4: and continuously cooling the alloy melt to form the alloy brazing filler metal under the protection of the argon-helium mixed gas.
The third step: preparing the alloy block brazing filler metal into a required rectangular or rectangular blank material;
the fourth step: shaping the blank material;
the surface of a blank material is polished by 500 abrasive paper and then cleaned by alcohol, the blank material is put into a resistance furnace to be heated to 350, the temperature is kept for 15min and then the blank material is immediately sent into a rolling mill to be rolled and compounded, the rolling speed is 10rmin, and the pressing amount is 30. The molded magnesium-aluminum alloy is obtained, the tensile strength is 235MPa, and the elongation is 6.3.
The fifth step: and (4) performing film coating passivation, oil coating and wax paper coating on the molded magnesium-aluminum alloy, and storing for later use.
Magnesium metal is one of the worst metals with corrosion resistance, and is corroded in acidic, neutral and weakly alkaline solutions to become Mg2+ ions, various types of atmosphere generate corrosion effects on magnesium to different degrees, a layer of dull loose porous oxide film is formed on the surface of the magnesium metal in dry air, and in humid atmosphere, the generated product has the composition of Mgco 3.3H2O + Mgso 4.7H2o + Mg (OH) 2. The atmospheric humidity is increased, sulfur dioxide, chloride and other substances contained in the atmosphere of industrial areas and marine environments can intensify the corrosion of magnesium, and chloride impurities and iron impurities in magnesium can accelerate the corrosion of magnesium.
In the present invention, unless otherwise explicitly specified or limited, the first feature "on" or "under" the second feature may be directly contacting the first feature and the second feature or indirectly contacting the first feature and the second feature through an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature. "beneath," "below," and "beneath" a first feature may be directly or obliquely below the second feature or may simply mean that the first feature is at a lower level than the second feature. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples," or the like, 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 are not necessarily intended to 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. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A production and manufacturing process of magnesium-aluminum alloy is characterized by comprising the following steps:
the first step is as follows: selecting materials, namely magnesium and aluminum;
the second step is that: respectively heating magnesium and aluminum, and fusing the heated magnesium and aluminum together to obtain an alloy block brazing filler metal;
the third step: preparing the alloy block brazing filler metal into a required rectangular or rectangular blank material;
the fourth step: shaping blank materials;
the fifth step: and (4) performing film coating passivation, oil coating and wax paper coating on the molded magnesium-aluminum alloy, and storing for later use.
2. The manufacturing process of magnesium-aluminum alloy according to claim 1, wherein: the proportion of magnesium and aluminum in the first step is 45-50% of magnesium and 45-50% of aluminum.
3. The manufacturing process of magnesium-aluminum alloy according to claim 1, wherein: the aluminum in the first step is any one of 6063 aluminum alloy, 6061 aluminum alloy, 6082 aluminum alloy, 6160 aluminum alloy, 6125 aluminum alloy, 6262 aluminum alloy, 6060 aluminum alloy, 6005 aluminum alloy and 6463 aluminum alloy.
4. The manufacturing process of magnesium-aluminum alloy according to claim 1, wherein: the second step comprises the following specific steps:
s1: putting magnesium and aluminum into a sealed crucible;
s2: meanwhile, continuously introducing argon-helium mixed gas into the crucible, and exhausting air in the crucible until the argon-helium mixed gas fills the inner space of the crucible;
s3: under the protection of argon-helium mixed gas, heating and smelting magnesium and aluminum, keeping the temperature for 20min and 30min to relatively homogenize the components of the alloy melt,
s4: and continuously cooling the alloy melt to form the alloy brazing filler metal under the protection of the argon-helium mixed gas.
5. The manufacturing process of magnesium aluminum alloy according to claim 4, wherein: the heating and smelting in the step S3 is to heat to 650 ℃, magnesium is gradually melted at the moment, the temperature is increased to 670 ℃ by five degrees centigrade per minute, aluminum starts to melt when the temperature is 660 ℃, and the alloy is completely melted after the temperature is 670 ℃ after the heating.
6. The manufacturing process of magnesium-aluminum alloy according to claim 1, wherein: the shaping in the fourth step comprises the steps of:
polishing the surface of a blank material by using 500 abrasive paper, cleaning the surface by using alcohol, putting the blank material into a resistance furnace, heating to 350 ℃, keeping the temperature for 15min, immediately sending the blank material into a rolling mill for rolling and compounding, wherein the rolling speed is 10rmin, and the pressing amount is 30, so that the molded magnesium-aluminum alloy is obtained.
7. The magnesium aluminum alloy production and manufacturing process according to claim 1, wherein the manufacturing process comprises the following steps: the tensile strength of the shaped magnesium-aluminum alloy is 235MPa, and the elongation is 6.3.
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| CN202211193649.0A CN115558818A (en) | 2022-09-28 | 2022-09-28 | Magnesium-aluminum alloy production and manufacturing process |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563459A (en) * | 2004-04-22 | 2005-01-12 | 上海交通大学 | Mg-Al based magnesium alloy in high intensity and high plasticity |
| CN103280565A (en) * | 2013-06-06 | 2013-09-04 | 北京西区码头商贸有限公司 | Aluminium alloy anode material and preparation method thereof |
| CN112795824A (en) * | 2020-12-24 | 2021-05-14 | 昆山智盛精密铸造有限公司 | Magnesium-aluminum alloy material and preparation process thereof |
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- 2022-09-28 CN CN202211193649.0A patent/CN115558818A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1563459A (en) * | 2004-04-22 | 2005-01-12 | 上海交通大学 | Mg-Al based magnesium alloy in high intensity and high plasticity |
| CN103280565A (en) * | 2013-06-06 | 2013-09-04 | 北京西区码头商贸有限公司 | Aluminium alloy anode material and preparation method thereof |
| CN112795824A (en) * | 2020-12-24 | 2021-05-14 | 昆山智盛精密铸造有限公司 | Magnesium-aluminum alloy material and preparation process thereof |
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