Multi-axis linkage spraying device and spraying method for thermal barrier coating on surface of special-shaped structural member

Abstract

The invention discloses a multi-axis linkage spraying device and spraying method for a thermal barrier coating on the surface of a special-shaped structural member. The multi-axis linkage spraying device comprises a three-dimensional modeling unit, a multi-axis linkage plasma spraying unit and a thickness monitoring and feedback unit. The multi-axis linkage automatic spraying method comprises thefollowing steps that 1) three-dimensional modeling is performed; 2), offline programming of a profiling spraying track program is performed; and 3) multi-axis linkage automatic plasma spraying is performed. According to the multi-axis linkage spraying device and spraying method for the thermal barrier coating on the surface of the special-shaped structural member, the coating prepared by adoptingthe multi-axis linkage spraying device and the automatic spraying method is high in efficiency, good in quality, uniform in thickness and high in consistency, the characteristics of high precision, high efficiency and low consumption are achieved, the requirement for the operation level of workers is lowered, the large workload for obtaining the spraying track program by adopting a manual teachingmode is avoided, the limitation of the outer shape features of a workpiece to thermal spraying is reduced, real-time monitoring and representation of the thickness of the thermal barrier coating arerealized, and a convenient and fast way is provided for preparation of the thermal barrier coating of the complex special-shaped structural member.

Description

technical field [0001] The invention belongs to the technical field of surface engineering, and relates to a spraying device and a spraying method. Background technique [0002] Thermal barrier coatings are widely used in hot-end parts working under high-temperature hot air flow conditions to provide high-temperature heat insulation protection. Its application range in advanced aero-engines in my country continues to expand, but the shape of engine hot-end parts is relatively complex and irregular. The corresponding problems of low controllability of the coating preparation process, poor coating quality stability, and short service life of the coating are more prominent, which have become the "bottleneck" affecting the application of thermal barrier coatings in aero-engine hot-end parts in my country. [0003] At present, domestic thermal barrier coating spraying operations mostly use manual spraying and mechanized spraying. The quality of the coating obtained by manual spra...

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is: aiming at the defects existing in the prior art, the present invention provides a multi-axis linkage spraying device and automatic spraying method for the thermal barrier coating on the surface of special-shaped structural parts, which can realize the thermal barrier coating of complex special-shaped parts in one time Spraying forming, uniform thickness distribution of special-shaped surface coating, high coating production efficiency

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