High-performance green energy-saving manufacturing process for large forgings

The high-performance green energy-saving manufacturing process comprises the following steps that A, a steel ingot with the surface layer solidified and the core part not completely solidified is obtained; b) transferring the steel ingot into a preheating heating furnace before forging, carrying out homogenizing heating treatment, and ending heating until the core temperature and the surface temperature of the steel ingot reach the set temperature of a hearth; c) transferring the steel ingot subjected to homogenizing heating treatment into a free forging process, and carrying out hot forging according to preset rolling reduction, speed and forging frequency; wherein in the hot forging process, a riser is firstly forged and sealed, then an ingot tail is forged and pressed, and finally an ingot body is forged and pressed, so that two-phase region forging is realized; d, a dead head and an ingot tail part of the forge piece are cut off, and a blank piece is obtained.The problems that a traditional hot forging te