The invention discloses a
smelting method of a high-
titanium nickel-based
alloy, which comprises AOD furnace
smelting and VOD furnace
smelting, in the
decarburization stage 1, the vacuum degree is 190-210 mbar, the
oxygen blowing amount is 900-1100 m < 3 >, the
oxygen supply intensity is 28-32 m < 3 > / h / t, the
oxygen lance position is 1500-1700 mm, and the steel
ladle bottom
argon blowing supply intensity is 3-5 Nl / min / t; in the second
decarburization stage, the vacuum degree is 90-110 mbar, the oxygen blowing amount is 350-450 m < 3 >, the
oxygen supply intensity is 24-26 m < 3 > / h / t, the oxygen lance position is 1200-1400 mm, and the steel
ladle bottom
argon blowing supply intensity is 5-7 Nl / min / t; in the third
decarburization period, the vacuum degree is 10-30 mbar, the oxygen blowing amount is 250-350 m < 3 >, the
oxygen supply intensity is 18-22 m < 3 > / h / t, the oxygen lance position is 900-1100 mm, and the steel
ladle bottom
argon blowing supply intensity is 7-9 Nl / min / t; in the boiling period, the vacuum degree is smaller than or equal to 1 mbar, the steel ladle bottom blowing argon supply intensity is 13-17 Nl / min / t, and the boiling time is 55-65 min; and in the reduction period,
alloy auxiliary materials are added, and the reduction time is 25-35 min. According to the method, the contents of Al, Ti and N in the high-
titanium nickel-based
alloy are accurately controlled as follows: 0.10-0.20% of Al, 0.60-0.70% of Ti and less than or equal to 70ppm of N, so that efficient and stable production of the high-
titanium nickel-based alloy is realized.