Al-Fe-Ta-RE aluminum alloy, and preparation method and power cable thereof
An al-fe-ta-re, power cable technology, applied in the field of alloys, can solve problems such as poor comprehensive performance, poor fatigue resistance, and quality problems of aluminum alloy power cables
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[0068] The present invention also provides a method for preparing Al-Fe-Ta-RE aluminum alloy, including the following steps:
[0069] 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, 0.01~3.0wt% The RE, Si greater than zero and less than or equal to 0.2wt%, B greater than zero and less than or equal to 0.8wt% and the balance aluminum;
[0070] b) homoge...
Example Embodiment
[0081] Example 1
[0082] (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 and Al-Ta master alloys, stir evenly, then add rare earth RE and stir for 20 minutes until fully stirred, and keep it for 30 minutes; Then refining the above alloy melt in the furnace; adding a refining agent to the alloy melt and stirring it evenly, and then standing for 30 minutes to keep warm, the melt refining is operated in a sealed environment; after refining, slagging, standing, and adjusting the temperature to At 650°C, the alloy liquid is poured out of the furnace, and after degassing and slag removal, it enters the casting machine for casting to obt...
Example Embodiment
[0087] Example 2
[0088] (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 and Ta, 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, and then stand still Keep the temperature for 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 to obtain aluminum Alloy ingot, ingot composition is listed in Table 1;
[0089] (2) The aluminum alloy ingot obtained in step (1...
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