Generator rotor journal

Generator rotor journal repair service

Product description：

During the operation of the unit, the vibration of the unit due to the fracture of the last stage blade or the low steam parameters, which leads to the wear of the shaft journal, etc. The abrasion of the seal will directly cause the hydrogen leakage of the generator, which affects the safe and normal production of the power plant.

For the treatment of the abrasion of the seal position of the generator rotor, the traditional method is to re-machine the journal, grind the shaft small, and re-distribute the bushes. The disadvantage of this method is that it needs to be transported to a large machine processing plant. Since the rotor generally weighs tens of tons and has a length of tens of meters, transportation and handling are quite troublesome. Grinding the journal to a small size will also reduce the strength of the shaft. With the development and application of surface engineering technology, more and more process materials are used in the repair of generator rotor journal seals. This type of process requires simple equipment, is quick and economical to implement, and is quickly applied in the power industry.

WILA Laser uses a laser beam to melt the coating material and thin-layer base material. After rapid solidification, it forms a cladding layer with extremely low dilution and roughly the same composition as the coating. Alloy cladding can be formed on the surface of the engine rotor journal. Layer to improve the wear resistance, corrosion resistance, heat resistance, and oxidation resistance of the surface of the substrate material. It can also restore the original size of the worn journals with the same quality and performance.