The company has developed a cryogenic treatment device for train wheels, including: a box body, which is equipped with a rotating shaft, the rotating shaft can rotate in the box body, and the train wheels can be installed on the rotating shaft; The nozzle is arranged in the box body, the nozzle is connected with the liquid nitrogen pipe outside the box body, and the nozzle is facing the tread of the train wheel on the rotating shaft. The invention also provides a treatment method of a train wheel cryogenic treatment device. The train wheel cryogenic treatment device of the invention installs the train wheel on the rotating shaft, the rotating shaft rotates to drive the train wheel, the liquid nitrogen enters the nozzle through the liquid nitrogen pipe, and the liquid nitrogen is directly sprayed onto the tread of the train wheel through the nozzle for cooling. On the one hand, the low-temperature nitrogen sprayed from the nozzle and the tread of the train wheel conduct forced convection heat transfer, On the other hand, through the rotation of the train wheel, the other surfaces of the wheel and the ambient low-temperature gas in the cryogenic box conduct convective heat transfer. After the cryogenic treatment of the train wheel by this device, the crack resistance and wear resistance of the wheel can be increased.
The company has developed a cryogenic treatment device for train wheels, including: a box body, which is equipped with a rotating shaft, the rotating shaft can rotate in the box body, and the train wheels can be installed on the rotating shaft; The nozzle is arranged in the box body, the nozzle is connected with the liquid nitrogen pipe outside the box body, and the nozzle is facing the tread of the train wheel on the rotating shaft. The invention also provides a treatment method of a train wheel cryogenic treatment device. The train wheel cryogenic treatment device of the invention installs the train wheel on the rotating shaft, the rotating shaft rotates to drive the train wheel, the liquid nitrogen enters the nozzle through the liquid nitrogen pipe, and the liquid nitrogen is directly sprayed onto the tread of the train wheel through the nozzle for cooling. On the one hand, the low-temperature nitrogen sprayed from the nozzle and the tread of the train wheel conduct forced convection heat transfer, On the other hand, through the rotation of the train wheel, the other surfaces of the wheel and the ambient low-temperature gas in the cryogenic box conduct convective heat transfer. After the cryogenic treatment of the train wheel by this device, the crack resistance and wear resistance of the wheel can be increased.
