A support device for vapor deposition on the full channel surface of a guide vane and its application method

Abstract

The invention discloses a supporting device for gas-phase deposition on the entire channel surface of a guide vane and its application method. The device connects a clamping device and a rotating shaft through a connecting plate and an L-shaped connecting plate, and guide vanes are clamped in the clamping device. , because the L-shaped connecting plate is L-shaped, so that the axial direction of the guide vane is perpendicular to the axial direction of the rotating shaft. Under the premise of the bonding strength of the ceramic coating and the columnar grain structure, the bonding strength of the coating on the surface of the edge plate is significantly improved, and a relatively uniform columnar grain structure is formed, thereby ensuring that the entire runner surface of the guide vane is covered by the thermal barrier coating, greatly Improve the heat-resistant temperature and working stability of the guide vane. The device has a simple structure, fewer accessories, easy product processing and disassembly, and can carry out tooling matching design according to the guide vane structure.

Description

【Technical field】 [0001] The invention belongs to the field of engine guide vane manufacturing, in particular to a support device for vapor deposition on the full channel surface of a guide vane and a method for using the same. 【Background technique】 [0002] At present, electron beam physical vapor deposition (EB-PVD for short) has the advantages of high bonding strength between the coating and the substrate, the columnar grain structure can be obtained, the chemical composition of the coating is easy to precisely control, and the coating has a long service life. It has been widely used in multi-machine The preparation and processing of high-temperature protective coatings for engine turbine blades significantly improves the high-temperature oxidation resistance, corrosion resistance, and heat insulation performance of turbine blades, and prolongs the working life of the engine. [0003] EB-PVD technology uses an electron beam gun to heat the part when depositing the coatin...

AI Technical Summary

Problems solved by technology

The EB-PVD process determines that the surface of the airfoil perpendicular to the steam direction can form a uniform columnar crystal morphology, while the ceramic coating grown on the surface of the edge plate parallel to the steam direction is relatively loose, the bonding strength is weak, and it is easy to peel off. Unable to meet design requirements

Moreover, there is a shaded area in the middle of the blade body. It is difficult to completely coat the shaded area with the existing EB-PVD technology when coating, resulting in uneven coating on the blade body.

Images