Full-process automatic manufacturing method for aero-engine jet nozzle coating

Abstract

The invention discloses a full-process automatic manufacturing method for an aero-engine jet nozzle coating. The method comprises the steps of determining an integration and control mode of processes of sand blasting treatment before spraying, cleaning, spraying and cooling, and guaranteeing the spraying control of the performance of the coating; integrating functional areas of part loading and unloading, sand blasting, cleaning, spraying and cooling into a whole, and using software and hardware of a sound insulation room, a sand blasting control system, an atmospheric ion spraying control system and a multi-station rotary table for supporting work; and preparing a nickel-chromium-tungsten coating by adopting an F4-HBS atmospheric ion spray gun, wherein the main gas is Ar, and the secondary gas is H2. The method has the advantages that the coating quality consistency is good, the one-time machining percent of pass is high, and the requirement for part surface abrasion resistance in the working state of an engine is met. Compared with single-process automatic production, the one-time machining percent of pass can be increased by 7%, the production efficiency can be improved by 46%, meanwhile, the technology can also be used for coating production of aero-engines and parts with the sizes not larger than 350 mm in related industries, and high economic benefits are achieved.

Description

technical field [0001] The invention relates to the field of aero-engines, in particular to a full-process automatic manufacturing method for the coating of an aero-engine tail nozzle. Background technique [0002] Aeroengine tail nozzles need to be retracted and expanded according to different working conditions of the engine, and the retracted and expanded nozzles are connected and driven by ball joints, hinges, and pin shaft parts. During the retraction and expansion process, the contact surfaces of these parts slide against each other, which is prone to friction and wear Therefore, thermal spraying process is used to prepare wear-resistant protective coating on its surface to prolong the service life of worn parts, including ion spraying nickel aluminum tungsten, nickel chromium borosilicate coating. [0003] The process of the thermal spraying process is sandblasting, spraying, and cooling before spraying. The processing methods used include manual operation and single-...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of poor quality consistency, low production efficiency, and high labor intensity in the coating of aero-engine tail nozzle parts, and to provide a full-process automatic manufacturing method for aero-engine tail nozzle coatings.

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