Al-Fe-Bi-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 poor comprehensive performance, hidden safety hazards, and quality problems of aluminum alloy power cables.
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[0077] The present invention also provides a method for preparing an Al-Fe-Bi-RE aluminum alloy, comprising the following steps:
[0078] 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, 0.002~0.08wt% Os, 0.001~0.15wt% Ir, 0.002~0.08wt% Pt, 0.001~0.05wt% Au, 0.002~0.15wt% Tl , 0.0...
Embodiment 1
[0091] (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 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, Al-Re, Al-Os, Al-Ir, Al-Pt, Al - Au, Al-Tl, Al-Pb and Al-Bi master alloys, after stirring evenly, add rare earth RE and stir for 20 minutes until fully stirred evenly, and let it stand for 30 minutes; then refine the above alloy melt in the furnace; Add refining agent to the body, stir evenly, and then let it stand for 30 minutes. The melt refining is operated in a sealed environment; After the slag is processed, it enters the casting machine for casting to obtain an aluminum alloy ingot, and the composition of the ingot is listed in Table 1;
[0092] (2...
Embodiment 2
[0097](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 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, Re, Os, Ir, Pt, Au, Tl, Pb and Bi, stir evenly, then add rare earth RE and stir for 20 minutes until fully stirred evenly, and keep it for 30 minutes; Internal refining; add refining agent to the alloy melt, stir evenly, and then let it stand for 30 minutes. The melt refining is operated in a sealed environment; After degassing and slag removal, enter the casting machine for casting to obtain aluminum alloy ingots. The ingot composition is listed in Table 1;
[0098] (2) Heat up the aluminum alloy ingot obtained in step (1) at a rate of 3°C / min to 550°C, hold it for 16 hours and then roll it into a rod;
[0099] (3) Anneal the rod material obtained in step (2) under an...
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Abstract
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