Metal workpiece nitriding treatment device

The utility model provides a metal workpiece nitriding treatment device, which belongs to the technical field of metal workpiece processing equipment, and comprises a box body, a heat preservation heating layer is arranged in the box body, one side of the box body is communicated with an air inlet pipe, the other side of the box body is communicated with an exhaust pipe, the top of the box body is provided with a sealing cover, and the sealing cover is provided with an air outlet. A motor is installed in the center of the top of the sealing cover, the output end of the motor is connected with a rotating shaft, the rotating shaft penetrates through the sealing cover and extends into the box body, multiple sets of storage boxes are installed on the surface of the rotating shaft, through holes are formed in the multiple sets of storage boxes, and the rotating shaft is driven by the motor to rotate. The rotating shaft drives the storage box to rotate, gas in the box body is evenly stirred, the permeation effect o