Processing video of shielding sleeve rotor

The invention relates to a hot lamination process for rotor stamping of a large shielded motor, which comprises the following steps: fixing a group of rotor stamping with stamping fixing tools, heating to the required temperature in a heating furnace, taking out a hot sleeve on a rotor shaft, pressurizing with an oil press, and releasing the oil press after installing a stamping tensioning tool after the rotor stamping is cooled, and continuing the hot lamination of the next group of stamping. The interference between the punching sheet and the shaft is more than 0.2 mm, and the slender rotor punching sheet with the total rotor length of 6000 mm can be directly thermally laminated without using a tooling dummy shaft. Patent Description The technical field of hot lamination process for large shielded motor rotor stamping [000 1] is that the invention relates to a hot lamination process for large shielded motor rotor stamping. [0002] Background: With the continuous improvement of the safety of nuclear power plants, the reactor coolant main pump requires maintenance-free, no leakage and long service life, and large-scale shielded motors with this feature will be widely used. In order to reduce the water friction loss of the inner shielding sleeve, the rotors of this kind of shielded motor are slender, and the rotor punch and rotor shaft adopt interference fit to reduce imbalance, improve the support strength of the rotor shielding sleeve and prolong the service life. The traditional hot lamination method of rotor sheet is to stack the rotor sheet with a dummy shaft first, then exit the dummy shaft, and put the iron core on the rotor shaft after heating the whole. This method will damage the inner hole of the punching sheet in the process of extracting the dummy shaft, but for large slender rotors, the integral iron core must expand enough assembly clearance to be successfully installed on the rotor shaft, so heating the rotor punching sheet at high temperature will damage the paint film on the surface of the punching sheet. In order to ensure the normal lamination of rotor lamination of shielded motor, a new hot lamination process is needed. [0003]