Automatic spraying process for turbine countervanes
A technology for turbine guide vanes and automatic spraying, which is used in coatings, devices for applying liquid to surfaces, etc.
Active Publication Date: 2015-05-27
BEIJING GOLDEN WHEEL SPECIAL MACHINE
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Problems solved by technology
[0005] The purpose of the present invention is to solve the problem of the quality stability of the thermal barrier coating on the surface of the turbine guide blade, and provide a fully automatic spraying process for the preparation of the thermal barrier coating on the surface of the blade, which is used to prepare the thermal barrier coating on the surface of the turbine guide blade
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[0031] The technical solution of the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but it is not intended as a limitation of the present invention
[0032] (1) Use a clean natural bristle brush dipped in industrial acetone to scrub the surface of the blade to remove grease and pollutants on the surface of the blade. After the blade is clear and clean, install the blade on the blade protection tool and then scrub the sprayed surface of the part with acetone.
[0033] (2) Use appropriate protective tooling and high-temperature tape to protect the parts that do not need to be sprayed, and do not use high-temperature tape to protect the blade body and the inner runner surface of the citrus plate.
[0034] (3) Carry out dry sandblasting on the sprayed part, using 60 mesh white corundum as the sand material, the sandblasting distance is 50-100mm, the sandblasting pressure is 0.6MPa, and the diameter...
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Disclosed is an automatic spraying process for turbine countervanes. The automatic spraying process is characterized by including steps of determining basic spraying process parameters; determining the optimal spraying distance which is 3mm; determining spraying angles of the countervanes; keeping 0-degree angle between an upper rafter plate and the bottom surface of a lower rafter plate of a countervane and the horizontal plane of the ground, namely horizontally laying down the countervane on the ground by forming 0-degree posture; rotating clockwise by utilizing a central cooling air hole of the countervane as a rotating shaft, and keeping spraying angles at 45 degrees, 135 degrees and 225 degrees. Automatic spraying programming is based on spraying nodes which are drawn according to variation trends of a body curved surface of the countervane body, the countervane body is provided with at least three nodes which are respectively arranged at the joints of the countervane body, the upper rafter plate and the lower rafter plate and the middle of the countervane body, and the outer surfaces of the upper rafter plate and the lower rafter plate are respectively provided with a node to be a starting point and a finishing point of a single spraying track. The automatic spraying process is a full-automatic spraying process for preparing thermal barrier coatings on the surfaces of the countervanes and is used for preparing high-performance and high-reliability thermal barrier coatings on the surfaces of the turbine countervanes.
Description
technical field [0001] The invention relates to an automatic spraying technology, in particular to an automatic spraying process for preparing a thermal barrier coating on the surface of a turbine guide vane. Background technique [0002] Thermal barrier coatings have been successfully applied to the protection of high-performance aeroengine turbine blades due to their ability to effectively reduce the surface temperature of the blades, improve the high-temperature oxidation and corrosion resistance of the blades, prolong the service life of the blades, and reduce engine fuel consumption. In recent years, the development of aero-engines tends to increase the temperature of the front inlet of the turbine to improve the thrust-to-weight ratio and efficiency of the engine. As a result, the service environment of the turbine guide blades is getting worse and worse. The performance and quality stability of the thermal barrier coating on the blade surface are required Also getting...
Claims
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IPC IPC(8): B05D7/24B05C5/00B05C13/02
Inventor 汪瑞军傅斌友袁涛
Owner BEIJING GOLDEN WHEEL SPECIAL MACHINE