Aluminum alloy mixed powder, and method and product for improving density of aluminum alloy product
A technology of mixing powder and aluminum alloy, which is applied in the field of aluminum alloy mixing powder and improving the density of aluminum alloy products. The total length of the boundary is long and the effect of reducing the distance between dendrites
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Embodiment 1
[0043] S1: Pretreat the selected 7075 aluminum alloy base material, and the aluminum alloy powder is AlSi 10 Mg powder, remove surface metal oxides, oil and impurities;
[0044] S2: Aluminum alloy powder is AlSi 10 Mg, particle size 45μm~60μm, chemical composition by mass percentage: Mn≤0.01, Cu≤0.05, 0.14≤Fe≤0.55, 0.40≤Mg≤0.45, 10≤Si≤11, the rest are Al and unavoidable impurities;
[0045] The transition element carbide ceramic powder used is TiC ceramic powder with a particle size of 1 μm to 20 μm;
[0046] The drying method adopts a drying oven, the drying temperature is controlled at 100°C, the drying time is 0.5h, and the argon atmosphere is protected.
[0047] S3: Fully mix the dry mixed powder of S2;
[0048] AlSi 10 Mg alloy powder and TiC ceramic powder are mixed evenly, and its microscopic morphology is as follows: figure 1 Shown, wherein the mass fraction of TiC ceramic powder is 7%;
[0049] The preparation method of the mixed powder is ball milling and mixin...
Embodiment 2
[0054] S1: The aluminum alloy base material is 7075 aluminum alloy, and the aluminum alloy powder is AlSi 7 Mg powder, the selected 7075 aluminum alloy substrate is pretreated to remove surface metal oxides, oil stains and impurities;
[0055] S2: Aluminum alloy powder is AlSi7Mg, particle size 55μm~65μm, chemical composition by mass percentage: Cu≤0.2, Mg≤0.25, Mn≤0.35, Fe≤0.5, 6.8≤Si≤7.5, the rest is Al and unavoidable impurities ;
[0056] The transition element carbide ceramic powder used is TiC ceramic powder with a particle size of 1 μm to 20 μm;
[0057] The drying method adopts drying box drying, the drying temperature is controlled at 100°C, the drying time is 1h, and the argon atmosphere is protected.
[0058] S3: Fully mix the dry mixed powder of S2
[0059] AlSi 7 Mg alloy powder and TiC ceramic powder are evenly mixed, wherein the mass fraction of TiC ceramic powder is 10%;
[0060] The preparation method of the mixed powder is ball milling. According to the ...
Embodiment 3
[0065] S1: Pretreat the selected 7075 aluminum alloy base material, and the aluminum alloy powder is AlSi 10 Mg powder, remove surface metal oxides, oil and impurities;
[0066] S2: Aluminum alloy powder is AlSi 10 Mg, particle size 45μm~60μm, chemical composition by mass percentage: Mn≤0.01, Cu≤0.05, 0.14≤Fe≤0.55, 0.40≤Mg≤0.45, 10≤Si≤11, the rest are Al and unavoidable impurities;
[0067] The transition element carbide ceramic powder used is TiC ceramic powder with a particle size of 1 μm to 20 μm;
[0068] The drying method is drying in a drying box, the drying temperature is controlled at 110°C, the drying time is 1h, and the argon atmosphere is protected;
[0069] S3: Fully mix the dry mixed powder of S2;
[0070] AlSi10Mg alloy powder and TiC ceramic powder are evenly mixed, and its microscopic morphology is as follows: figure 1 Shown, wherein the mass fraction of TiC ceramic powder is 8%;
[0071] The preparation method of the mixed powder is ball milling and mixin...
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