METHOD FOR MANUFACTURING NI-TI SHAPE MEMORY ALLOY

摘要

The present invention relates to a manufacturing method for a nickel (Ni)-titanium (Ti) shape memory alloy which contains a carbon content of below 500 ppm and Ni of 49-51 at%. More specifically, the manufacturing method comprises: a raw material inserting step which inserts Ti and Ni into a graphite crucible; an induction melting step which performs induction heating of the graphite crucible in a vacuum induction melting furnace in order to melt Ti and Ni; and an alloy forming step which stirs Ti and Ni in the induction melting state and maintains the temperature at 1350-1450 degree C.