Al-Fe-Re-RE aluminum alloy, and preparation method and power cable thereof
A technology for power cables and aluminum alloys, applied in the field of alloys, can solve problems such as quality problems, poor comprehensive performance of aluminum alloy power cables, and potential safety hazards.
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[0070] The present invention also provides a method for preparing an Al-Fe-Re-RE aluminum alloy, comprising the following steps:
[0071] a) Cast the raw materials of the following composition to obtain an aluminum alloy ingot: 0.01~1.6wt% Fe, 0.001~0.3wt% Cu, 0.001~0.3wt% Mg, 0.001~0.3wt% Co, 0.001~0.2 wt% Be, 0.001~0.3wt% Ca, 0.001~0.2wt% Zn, 0.001~0.3wt% Sr, 0.001~0.3wt% Zr, 0.002~0.25wt% Li, 0.001~0.2wt% Na, 0.002~0.25wt% K, 0.001~0.2wt% Ti, 0.001~0.15wt% V, 0.001~0.12wt% Cr, 0.001~0.12wt% Mn, 0.001~0.15wt% Ni , 0.001~0.2wt% of Ga, 0.003~0.2wt% of Ge, 0.001~0.2wt% of Rb, 0.001~0.15wt% of Nb, 0.001~0.2wt% of Mo, 0.001~0.25wt% of Tc, 0.001 ~0.15wt% Ru, 0.002~0.1wt% Rh, 0.001~0.12wt% Pd, 0.001~0.1wt% Ag, 0.002~0.13wt% Cd, 0.003~0.18wt% In, 0.001~0.08 wt% Sn, 0.001~0.3wt% Sb, 0.001~0.2wt% Cs, 0.001~0.08wt% Ba, 0.001~0.22wt% Hf, 0.002~0.16wt% Ta, 0.001~0.08wt% W, 0.002~0.18wt% Re, 0.01~3.0wt% RE, greater than zero and less than or equal to 0.2wt% Si, greater than zero and le...
Embodiment 1
[0084] (1) Put the aluminum ingot into the furnace, heat it to melt and keep it warm at 720°C. The melting process is completed in a sealed environment; first add Fe, Cu, Mg, Co, Be, Ca, Zn, Sr, Zr, Si , B, Li, Na, K, Ti, V, Cr, Mn, Ni, Ga, Ge, Rb, Nb, Mo, Tc, Ru, Rh, Pd, Ag, Cd, In, Sn, Sb, Cs, Ba , Hf, Ta, W and Re, stir evenly, then add rare earth RE and stir for 20 minutes until fully stirred evenly, and keep it for 30 minutes; then refine the above alloy melt in the furnace; add refining agent to the alloy melt, and stir Uniformity, then stand for 30 minutes, and the melt refining is operated in a sealed environment; after refining, slag, stand still, and adjust the temperature to 650°C, the alloy liquid is poured out of the furnace, and after degassing and slag removal, it enters the casting machine for Cast to obtain an aluminum alloy ingot, and the composition of the ingot is listed in Table 1;
[0085] (2) Heat up the aluminum alloy ingot obtained in step (1) at a ra...
Embodiment 2
[0090] (1) Put the aluminum ingot into the furnace, heat it to melt and keep it warm at 740°C. The melting process is completed in a sealed environment; first add Al-Fe, Al-Cu, Al-Mg, Al-Co, Al-Be , Al-Ca, Al-Zn, Zn-Sr, Al-Zr, Al-Si, Al-B, Al-Li, Al-Na, Al-K, Al-Ti, Al-V, Al-Cr, Al -Mn, Al-Ni, Al-Ga, Al-Ge, Al-Rb, Al-Nb, Al-Mo, Al-Tc, Al-Ru, Al-Rh, Al-Pd, Al-Ag, Al-Cd , Al-In, Al-Sn, Al-Sb, Al-Cs, Al-Ba, Al-Hf, Al-Ta, Al-W and Al-Re master alloys, stir well and then add rare earth RE and stir for 20min until fully Stir evenly, keep it standing for 30 minutes; then refine the above alloy melt in the furnace; add refining agent to the alloy melt, stir evenly, then let it stand for 30 minutes, and operate the melt refining in a sealed environment; Slag, stand still, adjust the temperature to 720°C, pour the alloy liquid out of the furnace, and after degassing and slag removal, enter the casting machine for casting to obtain aluminum alloy ingots. The composition of the ingots is...
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