The invention provides a preparation method of a CuCrZr
alloy material self-operated contact finger product. The preparation method comprises the following steps: S1, taking raw materials including achromium block, a
copper-
zirconium 40 intermediate
alloy,
rare earth and an electrolytic
copper plate for later use; S2,
smelting the raw materials in a vacuum medium-frequency
induction furnace, andobtaining a uniform
alloy solution; S3, refining the alloy solution obtained in the S2, degassed and deoxidized and then introducing the solution into a mold for cooling
crystallization, and obtainingan alloy
ingot after demolding; S4, the alloy
ingot obtained in S3 being subjected to
extrusion,
solution treatment, multi-pass drawing and aging treatment, and obtaining a treated profile; S5, conducting blanking,
punching, bending and groove milling on the profile obtained in the S4, and obtaining a contact finger; and S6, performing surface deburring and overall shape correction on the contactfinger obtained in the step S5, and plating a nano-silver layer on the
electric contact surface of the contact finger to obtain a self-operated contact finger product with the electric
conductivity of greater than 85% IACS, the
hardness HB of greater than 155 and the tensile strength of greater than 480MPa.