Method for spraying silicone rubber paint layer on engine shell

Abstract

The invention discloses a method for spraying silicone rubber paint layer on an engine shell. The method comprises the steps of: researching robot spraying parameters in combination with parameters of paint; establishing a relevant technical theoretical model when a robot finishes spraying a coating layer on the outer surface of a solid rocket engine, putting forward a calculation method of key technical parameters, and providing a method for calculation of forming technological parameters of different types and different coatings. The method can be used for shaping work of various types of engine paint layer robots with the diameter greater than 200 mm; if the technical theoretical model is adopted by a novel paint material in the solid rocket engine surface spraying technology research work, optimal spraying speeds Vs and Vm are determined only through combined adjustment of spraying parameters of the robot and the paint material, so that robot spraying technological parameters in the whole spraying process can be determined. The method for spraying silicone rubber paint layer on an engine shell provides a research technical theoretical model and a research method for a surface thickness required coating shaping technology of the robot solid rocket engine, speeds up the research progress, improves research efficiency and reduces research expense.

Description

technical field

[0001] The invention relates to the technical field of spraying, in particular to a method for spraying a silicone rubber paint layer on the surface of an engine. Background technique

[0002] During the flight of the missile in the atmosphere, the working environment is very harsh, and the engine has to withstand the erosion of high heat flux and high aerodynamic heat. In such a harsh thermal environment, the engine composite material shell must be protected from external heat; during the high-speed flight of the missile in the atmosphere, friction with the air will generate static electricity, and the engine propellant is susceptible to static electricity, so anti-static measures must be taken. In order to ensure the successful flight of the missile, Xi'an Aerospace Chemical Power Plant developed a heat-resistant and anti-static silicone rubber paint layer, which was disclosed in the invention patent application document with the application number 20101005...

Examples

Embodiment Construction

[0082] This embodiment is a method for spraying an engine casing with a diameter of 2000 mm. The geometric structure of the outer surface of the casing is mainly composed of a cylindrical straight cylinder surface and an ellipsoidal head with two central openings. The specific process is:

[0083] Step 1: Install the painting tooling. During installation, the engine casing is hoisted on the paint-spraying turning car 2, and the painting tooling 1 is installed on the skirt end faces of the two ends of the engine casing, and the described painting tooling is positioned in the roller groove of the turning car; the painting tooling and the roller groove There is no interference between the groove walls. The painting tooling and turning car are the same as the tooling and turning car used when spraying the engine casing in the prior art.

[0084] Step 2: Shell grinding and cleaning. Use 120-grit sandpaper to polish the front and rear heads along the fiber direction; use 80-grit ...

technical field

[0001] The invention relates to the technical field of spraying, in particular to a method for spraying a silicone rubber paint layer on the surface of an engine. Background technique

[0002] During the flight of the missile in the atmosphere, the working environment is very harsh, and the engine has to withstand the erosion of high heat flux and high aerodynamic heat. In such a harsh thermal environment, the engine composite material shell must be protected from external heat; during the high-speed flight of the missile in the atmosphere, friction with the air will generate static electricity, and the engine propellant is susceptible to static electricity, so anti-static measures must be taken. In order to ensure the successful flight of the missile, Xi'an Aerospace Chemical Power Plant developed a heat-resistant and anti-static silicone rubber paint layer, which was disclosed in the invention patent application document with the application number 20101005...

Examples

Embodiment Construction

[0082] This embodiment is a method for spraying an engine casing with a diameter of 2000 mm. The geometric structure of the outer surface of the casing is mainly composed of a cylindrical straight cylinder surface and an ellipsoidal head with two central openings. The specific process is:

[0083] Step 1: Install the painting tooling. During installation, the engine casing is hoisted on the paint-spraying turning car 2, and the painting tooling 1 is installed on the skirt end faces of the two ends of the engine casing, and the described painting tooling is positioned in the roller groove of the turning car; the painting tooling and the roller groove There is no interference between the groove walls. The painting tooling and turning car are the same as the tooling and turning car used when spraying the engine casing in the prior art.

[0084] Step 2: Shell grinding and cleaning. Use 120-grit sandpaper to polish the front and rear heads along the fiber direction; use 80-grit ...

Images