Al-Fe-W-RE aluminum alloy, and preparation method and power cable thereof
An al-fe-w-re, power cable technology, applied in the field of alloys, can solve the problems of poor comprehensive performance, hidden safety hazards, and poor fatigue resistance of aluminum alloy power cables
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[0069] The invention also provides a method for preparing Al-Fe-W-RE aluminum alloy, which includes the following steps:
[0070] a) Casting the following raw materials 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% Ga, 0.003~0.2wt% Ge, 0.001~0.2wt% Rb, 0.001~0.15wt% Nb, 0.001~0.2wt% Mo, 0.001~0.25wt% 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, 0.01~3.0wt% RE, greater than zero and less than or equal to 0.2wt% Si, greater than zero and less than or equal to 0.8wt% of B and the balance aluminum;
[007...
Example Embodiment
[0082] Example 1
[0083] (1) Put the aluminum ingot into the furnace, heat it to melt and keep it at 720℃. 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 and Al-W master alloys, stir evenly, then add rare earth RE and stir for 20 minutes until fully stirred evenly. Keep the temperature for 30 minutes; then refining the above alloy melt in the furnace; add refining agent to the alloy melt and stir it evenly, then let stand for 30 minutes, the melt refining is operated in a sealed environment; after refining, slag and stand still , Adjust the temperature to 650℃, pour the alloy liquid out of the furnace, and after degassing and slag removal, enter the casting machine for casting to obtain aluminum alloy i...
Example Embodiment
[0088] Example 2
[0089] (1) Put the aluminum ingot into the furnace, heat it to melt and keep it at 740℃. 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 and W, stir evenly, then add rare earth RE and stir for 20 minutes until fully stirred, and let stand for 30 minutes; then refining the above alloy melt in the furnace; add refining agent to the alloy melt and stir evenly, Let it stand for another 30 minutes, and the melt refining is operated in a sealed environment; after refining, the slagging, standing, and adjusting the temperature to 720℃, the alloy liquid is poured out of the furnace, and after degassing and slag removal, it enters the casting machine for casting. The aluminum alloy ingot is obtained, and the ingot composition is listed in Table 1;
[0090] (2) The aluminum alloy ingot obtained in step (1) i...
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