Al-Fe-Cu alloy material and preparation method thereof

Abstract

The invention particularly relates to an Al-Fe-Cu alloy material and a preparation method thereof. The Al-Fe-Cu alloy material comprises the following components in percentage by weight: 0.20-1.30 wt% of Fe, 0.01-0.08 wt% of Cu, 0.06-0.15 wt% of Si, 0.02-0.10 wt% of rare-earth element and the balance of Al and unavoidable impurities. The aluminum alloy is prepared by casting and semi-annealing raw materials. When the aluminum alloy is prepared, the alloy material is semi-annealed, and thus, the adverse effects of stress on a conductor structure in the process of drawing and twisting are reduced, the electric conductivity reaches and even exceeds 61% of IACS (International Annealed Copper Standard) (the electric conductivity standard of an aluminum conductor for a general electrician is 61% of IACS), and the performances of elongation and the flexibility of the aluminum alloy are improved greatly by annealing. The performances of the elongation of a cable made of the aluminum alloy wire can reach 30%, the flexibility is 25% higher than that of a copper cable, and the resistivity maintains in a lower level.

Description

technical field [0001] The invention belongs to the field of wire and cable materials, and in particular relates to an Al-Fe-Cu alloy material and a preparation method thereof. Background technique [0002] For aluminum alloy conductors, there are two important quality indicators: one is resistivity, which directly affects the conductivity of aluminum alloy conductors. The resistivity is mainly determined by the chemical composition of raw materials, especially in In the aluminum alloy, if other impurity elements such as copper and iron are added, the conductive effect of the wire and cable will be deteriorated; the second is the mechanical properties, the elongation, flexibility and creep resistance of the wire and cable when ordinary electrical aluminum is used as a conductor All are poor, and use security stability is low. From the above, it can be seen that the aluminum alloy materials in the prior art are difficult to adapt to the development of electric wires and cabl...

AI Technical Summary

Problems solved by technology

[0002] For aluminum alloy conductors, there are two important quality indicators: one is resistivity, which directly affects the conductivity of aluminum alloy conductors. The resistivity is mainly determined by the chemical composition of raw materials, especially in In the aluminum alloy, if other impurity elements such as copper and iron are added, the conductive effect of the wire and cable will be deteriorated; the second is the mechanical properties, the elongation, flexibility and creep resistance of the wire and cable when ordinary electrical aluminum is used as a conductor Both are poor, and the use safety and stability are low

As can be seen from the above, the aluminum alloy materials in the prior art are difficult to adapt to the development of wire and cable