Additive Metal Manufacturing with Selective Solvent Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional additive manufacturing techniques face challenges in reducing part distortion, improving resolution and surface finish, and managing geometry changes during metal piece production, particularly with soft solids and hybrid manufacturing systems.
Innovation Solution
The system employs a hybrid manufacturing technique that includes selective deposition and removal of additives, material manipulation, and controlled thermal management to minimize distortion and enhance surface finish, using a deposition mechanism, translation mechanism, and treatment mechanisms within a working volume, allowing for near-net geometry creation and precise control of material properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional additive manufacturing techniques are used to deposit material layers, then material can be added to form metal pieces, but part distortion and geometry changes occur during the process
Solution Approach 1:
The patent segments the additive manufacturing process into distinct phases: depositing a material carrier (paste with solvent), selectively removing solvent from specific regions, and sintering. This segmentation allows precise control over where material is added and where voids are created, enabling complex geometries to be built layer-by-layer with minimal distortion while maintaining manufacturing efficiency.
Solution Approach 2:
The patent applies preliminary action by depositing the material carrier and selectively removing solvent before sintering. This pre-processing step creates the desired green body geometry with controlled porosity, allowing subsequent sintering to produce the final part with minimal distortion and reduced manufacturing time compared to conventional approaches.
2Manufacturing precision
If material layers are deposited and processed sequentially, then metal pieces can be manufactured, but resolution and surface finish are limited
Solution Approach 1:
The patent employs a multi-functional processing head that can perform multiple operations: depositing material carrier, selectively removing solvent, and sintering. This universal toolhead design achieves high resolution and surface finish through precise material placement and controlled solvent removal, while reducing device complexity by consolidating functions into a single integrated system rather than requiring separate machines for each operation.
3Ease of manufacture
If additives are present in material carrier, then material can be deposited and manipulated, but part distortion increases during manufacturing
Solution Approach 1:
The patent applies the extraction principle by selectively removing solvent from the material carrier in specific regions before sintering. This creates a green body with controlled porosity and density distribution, allowing the material to be easily manipulated into complex geometries while minimizing distortion during the subsequent sintering process. The solvent removal step eliminates the harmful effect of additives while preserving the manufacturing flexibility.
Solution Approach 2:
The patent changes the physical and chemical parameters of the material carrier through controlled solvent removal. By adjusting the amount and distribution of solvent removed, the system optimizes the green body properties for minimal distortion during sintering, while maintaining ease of manufacture through the flexible material carrier deposition and manipulation process.
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
This approach reduces part distortion, improves resolution and surface finish, and minimizes geometry changes, enabling the production of metal pieces with tighter tolerances and reduced manufacturing time by selectively removing additives and manipulating material layers within the additive manufacturing process.
Implementation Method 1
a deposition mechanism (200) arranged within the working volume (140)
Implementation Method 2
a treatment mechanism (800) separate from and fluidly connected to the working volume (140)
Data Source
AI summary
A system for additive metal manufacturing, including a deposition mechanism, a translation mechanism mounting the deposition mechanism to the working volume, and a stage. A method for additive metal manufacturing including: selectively depositing a material carrier within the working volume; removing an additive from the material carrier; and treating the resultant material.