Production process of high-manganese high-nitrogen austenitic steel forgings

The invention discloses a high-manganese high-nitrogen austenitic steel forge piece production process, which adopts an oil press and precision forging machine combined forging mode for production, in a main deformation stage, an upper flat anvil and a lower V anvil of 500mm-800mm are selected for drawing on a 5000t or 3150t oil press or upper and lower flat anvils of 500mm-800mm are selected for drawing, and in an auxiliary deformation stage, a precision forging machine of 1400t or 1800t is adopted for forging a finished product; through combined forging of the oil press and the precision forging machine, the number of times of furnace returning and heating during forging can be reduced by 2-5, the forging efficiency is improved, the process execution time is shortened, and the cost is saved; the forging cracking phenomenon caused by high-temperature nitride precipitation is avoided; through deformation control, the surface crack problem is reduced, the product quality is improved, an air cooling or fog cool