Large-size high-temperature alloy ingot casting material and smelting method thereof

The invention discloses a large-size high-temperature alloy ingot material and a smelting method thereof, and relates to the technical field of high-temperature alloy smelting, and a large-size high-temperature alloy ingot is a GH2132 alloy and comprises the following chemical components in percentage by mass: less than or equal to 0.08 wt% of C; cr: 13.5 to 16.0 wt%; ni: 24.0 to 27.0 wt%; ti: 1.75 to 2.35 wt%; al: less than or equal to 0.4 wt%; 1.0 to 1.5 wt% of Mo; v: 0.1 to 0.5 wt%; b, 0.001 wt% to 0.01 wt%; silt, Silt; 1.0 wt%; mn < lt >; 2.0 wt%; s is less than or equal to 0.02 wt%; p is less than or equal to 0.03 wt%; and the balance of Fe. According to the method, the burning loss of A1 and Ti elements at the head and the tail in the smelting process is low, the room-temperature tensile strength of the alloy can be effectively controlled, black spot metallurgical defects are inhibited to the maximum extent, the segregation degree of the elements is reduced, and the thermoplasticity of the steel ingot i