A production method of a copper-clad aluminum alloy conductor for a high-voltage cable of a new energy vehicle

Abstract

The application discloses a production method of a copper-clad aluminum alloy conductor for a high-voltage cable of a new energy vehicle. The method comprises the following steps: providing an aluminum alloy core rod containing micro-alloying elements such as Zr, Er, Fe, Ce and La; performing pre-deformation treatment on the core rod with a peripheral surface layer as a main deformation area and aging to form a precipitated strengthening shell layer; performing selective Ni alloying on the inner surface of a copper strip to form a discrete Ni-containing area, and then performing mechanical-chemical composite activation on the core rod and then performing cladding and welding in a protective atmosphere; alternately performing rapid interface heat treatment and wire drawing reduction and controlling cumulative heat exposure time; and finally performing stabilization treatment. The thickness of a continuous brittle layer at a copper / aluminum interface of the obtained conductor is effectively controlled, the conductor has relatively high conductivity, strength and interface reliability, and is suitable for a high-voltage cable of a new energy vehicle.