| abstract |
Disclosed is an easy-to-cut zinc-copper-nickel alloy, wherein the composition thereof, in weight percentage, is: Cu: 42.5-47.5 wt%, Ni: 8.0-12.0 wt%, Mn: 4.0-8.0 wt%, and Bi: 0.05-1.5 wt%, the balance being Zn and inevitable impurities. The easy-to-cut zinc-copper-nickel alloy can be processed into products such as rods and wires. The preparation process therefor comprises: fusion casting → extruding → stretching → intermediate annealing → stretching → pre-finished product annealing → stretching → finished product. The easy-to-cut zinc-copper-nickel alloy has an improved cutting property, and the alloy strength is improved by using a β phase, and same has a cutting performance similar to that of a lead-zinc-copper-nickel alloy under the condition of a relatively low Bi content. The easy-to-cut zinc-copper-nickel alloy has a tensile strength of ≥ 550 MPa, has a cutting performance reaching 80 percent or above that of the lead-zinc-copper-nickel alloy C79860, and can meet requirements of industries such as household appliances, communication equipment, medical equipment, detection and control instruments, sports equipment, and pen manufacturing. |