High-temperature alloy GH710 alloy steel ingot for turbine disc and preparation method of high-temperature alloy GH710 alloy steel ingot

According to the high-temperature alloy GH710 alloy steel ingot for the turbine disc and the preparation method of the high-temperature alloy GH710 alloy steel ingot, raw materials comprise a component A and a component B. The component A comprises, by mass, 53%-55% of metal nickel, 17%-19% of metal chromium, 14%-15.5% of metal cobalt, 1.5%-1.9% of metal tungsten, 3%-3.4% of metal molybdenum, 0.06%-0.09% of high-purity graphite blocks and the balance steel. And the component B comprises the following chemical components in percentage by mass: 2.3 to 3.8 percent of metal aluminum, 4.8 to 5.3 percent of sponge titanium, 0.075 to 0.125 percent of ferroboron, 0.05 to 0.15 percent of magnesium alloy and 0.01 to 0.03 percent of metal cerium. According to the method, vacuum induction smelting, protective atmosphere electroslag remelting and vacuum consumable remelting are adopted, the ingot shape is enlarged from phi 305 mm to phi 508 mm, the alloy ingot material rate is increased, the consumable ingot with the maxi