3D-Printed Protective Mask for Coating Openings Removal
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Solution Overview
Problem
Current methods for protecting openings in industrial parts during post-manufacturing processes, such as shot peening and coating, are complex and prone to cracking or require extensive removal processes, increasing manufacturing time and complexity.
Innovation Solution
A protective mask comprising a mounting member made of water-soluble material and a masking member made of non-water-soluble material, both formed using additive manufacturing, which are sequentially dispensed layer-by-layer to cover and protect openings, preventing coating bridging and cracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If removable blocking material is used to protect openings during coating, then the openings are protected from coating entry, but the manufacturing time and complexity increase due to installation and removal processes
Solution Approach 1:
The protective mask is installed on the part before the coating process begins, preparing the openings for protection in advance. The mask remains in place throughout the coating operation, eliminating the need for repeated installation and removal operations that would consume additional manufacturing time.
2Reliability
If coating is applied over blocking material, then the openings are protected, but coating cracking occurs and extensive additional processing is required
Solution Approach 1:
The protective mask is designed with specific geometric parameters including a reduced height relative to traditional blocking material, and a footprint that extends beyond the opening perimeter. These parameter changes allow the coating to bridge over the mask edges without creating stress concentrations that would cause cracking, while still effectively protecting the openings from coating entry.
3Reliability
If overhangs are used to protect openings, then the openings are protected, but the part complexity increases and performance may be sacrificed
Solution Approach 1:
The protective function is segmented from the main part geometry by using a separate, removable mask component. This allows the openings to be protected without permanently modifying the part design with integral overhangs, thereby avoiding increased part complexity and potential performance sacrifices while still providing effective protection during coating operations.
4Reliability
If traditional blocking material is used, then openings are protected, but extensive removal processing is required after the process
Solution Approach 1:
The protective mask is designed as a disposable component that is easily removed after the coating process by simply pulling it off the part. This eliminates the need for extensive removal processing such as machining, chemical etching, or thermal treatment that would be required for traditional blocking materials, significantly reducing removal complexity and additional processing time.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution simplifies the protection and removal of openings, reducing manufacturing complexity and labor costs, while minimizing the risk of coating damage and maintaining the integrity of the part's geometry.
Implementation Method 1
each mounting member includes a water soluble material
Data Source
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AI summary
A protective mask (100) for a part (102), the part (102) including a plurality of openings (104) in a surface (106) thereof, is provided. The protective mask (100) includes a mounting member (120) at least partially within each of at least two of the plurality of openings (104). Each mounting member (120) includes a water soluble material (160). A masking member (130) couples the at least two mounting members (120). The masking member (130) includes a non-water soluble material (162). Each mounting member (120) includes a first plurality of integral layers of the water soluble material (160), and the masking member (130) includes a second plurality of integral layers of the non-water soluble material (162). The protective mask (100) can be made by a two material additive manufacturing system (150). A related method is also provided.