Hypoxic manganese-containing water atomized steel powder reduction process

The invention discloses a hypoxic manganese-containing water atomized steel powder reduction process. A high-temperature reduction method is adopted to reduce water atomized FeMn powder, the room temperature is improved to be low-temperature reduction temperature, the low-temperature reduction temperature is kept for certain time and then is improved to be high-temperature reduction temperature, and the high-temperature reduction temperature is kept for certain time. The low-temperature reduction temperature is 550-750 DEG C and is kept for 0.5-2 hours. The high-temperature reduction temperature is 900-1000 DEG C and is kept for 1-2 hours. The reduction process include two stages, wherein at the low-temperature stage, the low-temperature reduction time is properly increased to reduce an iron oxide, remove more oxygen, decrease a manganese oxide to the greatest extent and reduce manganese oxidation and transfer at the high-temperature stage. Compared with pure 970 DEG C annealing and reduction, the two-stage method enables the powder surface oxygen content to be decreased obviously, the total oxygen content is also reduced to be lower than 0.2%, and compared with pure 970 DEG C annealing and reduction, the oxygen content is reduced by 61%.