Train wheel cryogenic treatment device and treatment method

The invention provides a train wheel cryogenic treatment device. The train wheel cryogenic treatment device comprises a box body and a nozzle, the box body is internally provided with a rotating shaft, the rotating shaft can rotate in the box body, and a train wheel can be mounted on the rotating shaft; and the nozzle is arranged in the box body, communicates with a liquid nitrogen pipe outside the box body, and is opposite to the tread of the train wheel on the rotating shaft. The invention also provides a treatment method of the train wheel cryogenic treatment device. According to the trainwheel cryogenic treatment device, the train wheel is mounted on the rotating shaft, the rotating shaft rotates to drive the train wheel, liquid nitrogen enters the nozzle through the liquid nitrogen pipe, the liquid nitrogen is directly sprayed to the tread of the train wheel through the nozzle to be cooled, on one hand, the low-temperature nitrogen sprayed by the nozzle and the tread of the trainwheel are subjected to forced convection heat exchange, and on the other hand, the rest surfaces of the train wheel and the environmental low-temperature gas in a cryogenic box are subjected to convection heat exchange through the rotation of the train wheel. After the train wheel is subjected to cryogenic treatment through the device, the anti-cracking performance and the wear resistance of thewheel can be improved.