Novel copper-aluminum transition solution

The invention provides a novel copper-aluminum transition solution, which comprises the following steps: step S1, casting and rolling molten aluminum and a copper plate strip together through a casting and rolling machine in an oxygen-free environment at high temperature and high pressure to form a composite plate raw material; s2, the aluminum bar is blanked through a sawing machine, the aluminum bar is formed twice, and an aluminum bar semi-finished product is formed; s3, the composite board raw material is blanked through a sawing machine and formed twice, and a composite board semi-finished product is formed; s4, the aluminum bar semi-finished product and the composite board semi-finished product are in butt joint for friction welding, and a wire clamp semi-finished product is formed; s5, after welding, removing residual burrs of the semi-finished product of the wire clamp by using an instrument lathe; s6, a mechanical punching machine and an open type die are used for wire clamp plate hole punching; and