The invention provides a 60
NiTi alloy high-purity preparation and rolling forming method. The 60
NiTi alloy high-purity preparation and rolling forming method comprises the steps that firstly,
raw material treatment is conducted, wherein the surface of a
raw material is cleaned; step 2, vacuum induction suspension
smelting; step 3, annealing treatment; step 4, pretreatment before rolling; fifthly, rolling forming is carried out; and sixthly, the sheath is removed, specifically, the sheath is
cut off through an
angle grinder, and the internal 60
NiTi alloy plate is obtained. According to the method, a low-C-content high-quality cast
ingot is prepared through a vacuum suspension
smelting process of vacuum-pulsed
magnetic field composite degassing, and a rolling forming process is adjusted according to the
millisecond-level rapid
precipitation characteristic of a Ni4Ti3 phase in the
alloy and the
metal flowing behavior in the plastic forming process; the problems that in the
alloy rapid forming process, hard phase rapid
precipitation and recrystallization are difficult are solved, the defects of non-uniform
crystal grains, transverse cracks, longitudinal cracks and
crocodile opening type cracks in the rolling process are avoided, and the 60NiTi
alloy rolled plate uniform in
microstructure and excellent in comprehensive performance is obtained.