| abstract |
The invention discloses a method for preparing a high-precision thin-walled nickel-titanium alloy pipe, comprising: first, preparing a tube blank; second, warm rolling the tube blank to obtain a semi-finished tube; third, cold drawing the tube to obtain a finished tube. The invention adopts warm rolling to obtain semi-finished pipes, and the warm rolling process can fundamentally solve the problem of difficult deformation of nickel-titanium alloys, improve the plastic workability of the materials, and the rolled pipes have good surface quality and no cracking defects. The method can significantly reduce the number of intermediate annealing in the rolling process, which is beneficial to improve the production efficiency and reduce the production cost; the problem of poor cold working plasticity of the nickel-titanium alloy is solved, the surface quality and dimensional accuracy of the obtained pipe are good, and the yield is high and the cost is high. low, suitable for mass industrial production. |