Repair of Turbine Components by Abrasive-Jet Machining

In the operation of modern gas and steam turbines, the amount of deposits on the aggregate surfaces inevitably increases (mainly in the form of amorphous silicon), which leads to metal corrosion and erosion damage. The relevance of solving the problem of removing technological pollution in the process of repairing gas and steam turbines in order to restore the design capacity of the equipment is shown in this paper. The efficiency of using hydroabrasive treatment for performing repair operations on turbine components (rotors, blades, etc.) has been established. The method developed is an alternative to the chemical cleaning processes and mechanical surface abrasion. The technology does not have a negative effect on the environment and has an isolated system of using technological components. The technology (composition of the technological medium) and equipment (high speed and density of particles) provide cleaning of deposits from the gas and steam turbine components, in particular, turbine blades, with a high quality of the resulting surface and the required productivity.