Shroud spraying protection clamp and method for turbine blades

Abstract

The invention discloses a shroud spraying protection clamp for turbine blades and a shroud spraying method for the turbine blades. The shroud spraying protection clamp comprises a frame, a first clamping mechanism and a second clamping mechanism, the first clamping mechanism and the second clamping mechanism are arranged on the outer wall surface of the frame, the first clamping mechanism and thesecond clamping mechanism are oppositely arranged along the height direction of the frame, the first clamping mechanism is used for abutting against the upper surfaces of shrouds and protecting the upper surfaces of the shrouds during spraying operation, positioning grooves which are obliquely arranged relative to the frame in the horizontal direction are concavely formed in the upper surface of the second clamping mechanism, second ends of blade bodies are obliquely arranged in the positioning grooves in the direction matched with the positioning grooves and abut against groove bottom faces of the positioning grooves, and the first clamping mechanism and the second clamping mechanism jointly clamp and fix the turbine blades to be machined so that the shrouds can be arranged in the horizontal direction. According to the shroud spraying protection clamp for the turbine blades, during the spraying operation, only a spraying gun needs to move back and forth for spraying, and then the spraying quality of the shrouds can be favorably controlled.

Description

technical field [0001] The invention relates to the technical field of spray protection of aviation turbine blades, in particular to a blade crown spray protection fixture of a turbine blade. In addition, the present invention also relates to a method for spraying the shroud of a turbine blade. Background technique [0002] Turbine working blades are important parts of power machinery such as aero-engines, steam turbines, and gas turbines. They are combined into a whole plate and assembled on the turbine part of the engine. Its substrate is often made of high-temperature materials and needs to work in extreme environments of high temperature and high pressure. Under normal circumstances, in order to ensure long-term reliable operation of turbine blades, it is necessary to spray wear-resistant coatings on the shroud mating surface of each turbine blade to achieve fretting wear resistance and prolong the service life of the blades. [0003] Such as figure 1 As shown, the tu...

AI Technical Summary

Problems solved by technology

[0005] The blade shroud spraying protection fixture of the turbine blade provided by the present invention solves the existing technical problems of low spraying efficiency and inconsistent coating thickness after spraying when spraying the outer wall surface of the blade shroud of the turbine blade.

Images