Component Masking Assembly for Selective Turbine Coating
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Solution Overview
Problem
Existing gas turbine engine components face challenges in selectively applying coatings to specific areas, such as compressor blades, to prevent unnecessary weight and interference with coupling, often requiring laborious removal of inadvertently applied coatings.
Innovation Solution
A multi-component masking system comprising a first and second piece, where the first piece has a recessed area to house the component's projection and a second piece that secures to the first, ensuring only the desired areas are coated by using a fastener through aligned openings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a coating is applied to the entire component, then the coating process is simple and continuous, but unnecessary weight is added and coupling areas are interfered with
Solution Approach 1:
The masking system is divided into multiple segments (first masking member, second masking member, third masking member) that can be positioned independently to mask specific areas. This allows selective coating of only the necessary surfaces while leaving coupling areas and non-coating areas protected, thereby avoiding unnecessary weight addition.
Solution Approach 2:
The masking members are positioned and secured to the component before the coating process begins. This preliminary action ensures that only the intended areas are exposed for coating, preventing coating material from reaching areas where it is not needed, thus avoiding unnecessary weight and subsequent removal work.
2Productivity
If a coating is applied to the entire component, then the coating process is simple, but laborious removal of coating from non-coating areas is required
Solution Approach 1:
The masking system uses multiple separate masking members that can be precisely positioned to cover only the areas that should not be coated. This segmentation allows the coating process to proceed efficiently on exposed areas while the masked areas remain protected, eliminating the need for time-consuming removal operations.
Solution Approach 2:
The masking members are installed before coating to pre-protect non-coating areas. This preliminary protective action prevents coating material from adhering to areas where it is not desired, thereby eliminating the subsequent laborious removal process and reducing total process time.
3Manufacturing precision
If a masking system is used to protect specific areas, then precise coating application is achieved, but the device complexity increases
Solution Approach 1:
The masking system is divided into multiple independent masking members (first, second, and third masking members) that can be positioned and secured separately. Each masking member has specific geometric features that align with corresponding features on the component, enabling precise positioning and secure attachment without requiring a complex integrated system.
Solution Approach 2:
Each masking member is designed with specific local geometric features (such as first geometric feature, second geometric feature, third geometric feature) that correspond to specific features on the component. This local quality approach allows each masking member to be simple in design while collectively providing precise masking coverage when assembled together.
4Manufacturing precision
If multiple masking members are used to selectively mask areas, then precise coating control is achieved, but the ease of operation decreases
Solution Approach 1:
The masking system uses multiple independent masking members that can be positioned and secured in a systematic sequence. Each masking member has alignment features that guide its placement, making the assembly process methodical and manageable despite the multi-component nature of the system.
Solution Approach 2:
Each masking member incorporates specific geometric features (first, second, third geometric features) that correspond to matching features on the component. These local quality features provide self-alignment and secure attachment, simplifying the operation of assembling multiple masking members while maintaining precise masking control.
Data Source
AI summary
A masking system for selectively masking a component is provided. The component has a projection. The masking system includes a first piece having a recessed area. The recessed area is configured to house the projection. The masking system has a second piece securable to the first piece. A first portion of the component is masked and a second portion of the component is exposed when the projection is housed within the recessed area and the first piece is secured to the second piece.