3D Printed Setter Structure for Low-Material Sintering Support
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Solution Overview
Problem
In 3D printing, the use of setters for sintering 3D components often requires significant amounts of material, leading to increased costs and technical challenges, particularly in binder jet printing where unsupported sections can deform during sintering, rendering the final component unusable.
Innovation Solution
The use of a combination of digital and preformed analog setters, determined by a 3D model, to minimize material usage and provide necessary support during sintering, with a breakaway interface to facilitate easy removal after processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional setters are used to support 3D components during sintering, then the component maintains structural stability, but the amount of material required for setters increases significantly
Solution Approach 1:
The setter is divided into multiple segments including a base portion, a pillar portion with varying cross-sections, and a top portion. This segmentation allows the setter to provide necessary support during sintering while minimizing material usage through optimized geometry at each segment.
Solution Approach 2:
The setter features varying cross-sectional areas along its height, with larger cross-sections where support is most needed and smaller cross-sections where less support is required. This local quality optimization reduces overall material consumption while maintaining structural stability during the sintering process.
2Quantity of substance
If setters with complex geometries are used to minimize material usage, then material consumption decreases, but the difficulty of manufacturing and removing setters increases
Solution Approach 1:
The setter design incorporates a breakaway interface with reduced material density created during the 3D printing process itself. This preliminary action facilitates easy removal after sintering without requiring complex post-processing operations, thus maintaining ease of manufacture despite geometric optimization.
Solution Approach 2:
The breakaway interface region has reduced material density, creating a porous or less dense structure that allows for easy separation from the sintered component. This porous design enables simple removal while maintaining the optimized geometry for material efficiency.
3Reliability
If full setter support is used for all sections, then all components maintain stability during sintering, but material usage and production costs increase
Solution Approach 1:
The setter provides localized support where needed through varying cross-sectional geometry, concentrating material in regions requiring stability during sintering while minimizing material in regions where full support is not necessary. This reduces both material waste and production costs while maintaining component stability.
Solution Approach 2:
The setter cross-sectional area parameter varies along the height of the setter, with larger areas providing support where components are most vulnerable during sintering and smaller areas where less support is needed. This parameter optimization reduces material consumption and production costs while maintaining necessary stability.
Data Source
AI summary
Three-dimensional (3D) printing may be described as an additive manufacturing process for generating 3D components. A 3D model may be used by a 3D printer to print the 3D component. In 3D printing, successive layers of material may be utilized to generate the 3D component. As part of the 3D printing process, the 3D component may be subjected to sintering. In some cases, the sintering may be accomplished by subjecting the 3D component to a heat source, or other types of processes.