Protecting device and method for angle-variable coating layers of turbine guide blades

Abstract

The invention discloses a protecting device and method for angle-variable coating layers of turbine guide blades. The protecting device comprises an inner edge plate protecting box sleeving an inner edge plate of a turbine guide blade, and an outer edge plate protecting box sleeving an outer edge plate of the turbine guide blade; the upper sides of the inner edge plate protecting box and the outeredge plate protecting box are connected with upper clips; the lower sides of the inner edge plate protecting box and the outer edge plate protecting box are connected with lower clips; the upper clips are connected with upper lifting hooks; the lower clips are connected with lower lifting hooks; the inner edge plate protecting box and the outer edge plate protecting box are positioned on the sameplane; the upper clips and the lower clips are positioned on the same plane; and an included angle between the plane of the inner edge plate protecting box and the outer edge plate protecting box andthe plane of the upper clips and the lower clips is 35-55 degrees. The whole runner surfaces of the turbine guide blades can be effectively coated; in particular, the thickness and the uniformity ofthe coating layers on throat way parts of the turbine guide blades are guaranteed; and non-coating areas are effectively protected.

Description

technical field [0001] The invention belongs to the field of manufacturing engine turbine guide vanes, and in particular relates to a protection device and method for variable-angle coating of turbine guide vanes. Background technique [0002] Multi-arc ion plating technology is a kind of ion plating technology using cathodic arc evaporation source, which is used for coating MCrAlY on turbine blades and TiN coating on compressor blades. figure 1 It is a structural diagram of a multi-arc ion plating equipment, in which a cathode arc source 10 (target material), an argon gas inlet 20, an air inlet 30, a vacuum system 40, blades 50, a bias power supply 60, and a hook 70. [0003] When the multi-arc ion plating technology is depositing the coating, its working principle determines that there is a physical shielding phenomenon in the coating deposition process, and some shielded areas cannot be deposited on the coating. For the dual guide vanes, the throat part in the middle of ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a protective device and method for variable-angle coating of turbine guide vanes, to solve the problems of the prior art, to use multi-arc ion plating deposition technology to coat metal on the surface of engine turbine guide vanes When coating, the present invention can be used to effectively coat the entire flow channel surface of the turbine guide vane, especially to ensure the coating thickness and uniformity of the throat part of the turbine guide vane, and to effectively protect the non-coated area

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