Aluminum alloy powder and preparation method thereof
An aluminum alloy and powder technology is applied in the field of aluminum alloy powder and its preparation, and the processing method of laser melting is selected, which can solve the problems of low strength, limited promotion and application of aluminum-lithium alloy additive manufacturing technology, and micro-cracks.
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Embodiment 1
[0033] Al-4Cu-1Li-0.3Mg-0.4Ag-0.6Sc-0.3Zr alloy powder was prepared, the melting furnace was cleaned before powder making, and the inner wall of the melting chamber was wiped with alcohol-moistened cleaning cloth. New crucibles should be wiped with an alcohol-moistened cleaning cloth. The smelted raw materials are deoxidized, ultrasonically washed and dried before feeding.
[0034] Melting process technology: Add aluminum ingots into the crucible, and the vacuum degree in the melting chamber reaches 1×10 -2 After Pa is below, fill the smelting chamber with high-purity argon to make the pressure of the smelting chamber the same as the atmospheric pressure, and start smelting. During the smelting process, first adjust the power of the intermediate frequency furnace so that the temperature in the crucible is 400°C, and preheat the aluminum ingot to heat the raw material evenly and release the mixed gas. At the same time, the high-purity argon gas filling valve and one-way exhaus...
Embodiment 2
[0038] Al-4Cu-1Li-0.5Mg-0.4Ag-0.4Sc-0.2Zr alloy powder is prepared, the melting furnace is cleaned before powder making, and the inner wall of the melting chamber is wiped with a cleaning cloth moistened with alcohol. New crucibles should be wiped with an alcohol-moistened cleaning cloth. The smelted raw materials are deoxidized, ultrasonically washed and dried before feeding.
[0039] Melting process technology: Add aluminum ingots into the crucible, and the vacuum degree in the melting chamber reaches 1×10 -2 After Pa is below, fill the smelting chamber with high-purity argon to make the pressure of the smelting chamber the same as the atmospheric pressure, and start smelting. During the smelting process, first adjust the power of the intermediate frequency furnace so that the temperature in the crucible is 400°C, and preheat the aluminum ingot to heat the raw material evenly and release the mixed gas. At the same time, the high-purity argon gas filling valve and one-way ex...
Embodiment 3
[0043] Al-4Cu-1Li-0.2Mg-0.4Ag-0.4Sc-0.2Zr alloy powder was prepared, the melting furnace was cleaned before powder making, and the inner wall of the melting chamber was wiped with alcohol-moistened cleaning cloth. New crucibles should be wiped with an alcohol-moistened cleaning cloth. The smelted raw materials are deoxidized, ultrasonically washed and dried before feeding.
[0044] Melting process technology: Add aluminum ingots into the crucible, and the vacuum degree in the melting chamber reaches 1×10 -2 After Pa is below, fill the smelting chamber with high-purity argon to make the pressure of the smelting chamber the same as the atmospheric pressure, and start smelting. During the smelting process, first adjust the power of the intermediate frequency furnace so that the temperature in the crucible is 400°C, and preheat the aluminum ingot to heat the raw material evenly and release the mixed gas. At the same time, the high-purity argon gas filling valve and one-way exhaus...
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