Multi-station rotating tooling device for plasma physical vapor deposition

Abstract

The invention discloses a multi-station rotating tooling device for plasma physical vapor deposition, and relates to the field of plasma spraying. The multi-station rotating tooling device consists four parts, including a revolution system, a rotation system, a control system and a supporting rack, wherein the revolution system consists of three parts, including an electric main shaft mechanism, arevolution frame mechanism and a revolution gear mechanism; the rotation system consists of two parts, including a universal joint mechanism and a rotation shaft mechanism. The device can implement single-shaft inputting and multi-shaft outputting, has revolution and rotation functions and can meet the use requirements for preparation of rotating surface coating layers of multiple rotating body parts; through the adoption of the tooling device with an angle, the spraying thickness of a workpiece is substantially improved, and uniform transition of a coating layer of a workpiece having a severely covered region or a region with a relatively large bending moment is achieved; the station setting of the device is reasonable and proper, and the mechanisms work stably and reliably; the thickness uniformity and consistency of a coating layer of a product can be strictly controlled; the multi-station rotating tooling device is particularly applicable to preparation of a coating layer on the surface of a turbine blade of a gas turbine engine; the production efficiency and the productivity are improved.

Description

technical field [0001] The invention relates to the field of plasma spraying, in particular to a multi-station rotary tooling device for automatically rotary spraying a plurality of workpieces during the plasma physical vapor deposition process. Background technique [0002] Gas turbine engine high-pressure turbine guide vanes, especially concatenated guide vanes, have complex profiles and shielding factors, and their surface coatings are mostly prepared by atmospheric plasma spraying (APS) and electron beam physical vapor deposition (EB‐PVD) techniques . The above two traditional technologies are line-of-sight deposition techniques, that is, coatings are easy to deposit on visible positions, and it is difficult to obtain coatings with uniform structure and thickness in areas with severe shadowing or large torsion, which will affect the surface of the turbine blades of the gas turbine engine. Thermal barrier coating thermal protection effect. Since the beginning of this ce...

AI Technical Summary

Problems solved by technology

However, during the spray deposition process, the workpiece to be sprayed and deposited is basically completely covered by the plasma jet. During the deposition process, it is easy to cause problems such as excessive instantaneous heat flow input or overheating of the substrate that affect the coating preparation and deposition process. In addition, due to the plasma jet Long, the front-end spray gun clamping manipulator or the adjustment range of the walking device is limited, it is difficult to adjust the spray gun at a large angle to achieve spraying at different positions like ordinary atmospheric plasma spraying (spraying distance is generally 60-120mm), so it must be designed with the spray gun attitude swing design and high-quality spray deposition

[0003] The traditional tooling adopts the single-station spraying method in which the workpiece is placed vertically and rotated. The tooling can only realize the simple single mode of single-axis input and single-axis output. The single-station tooling spraying method, due to the complex profile and shielding part of the concatenated guide vane, is likely to cause problems such as thin coating thickness and uneven connection in the transition area.

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