Additive Manufacturing Magnetic Anisotropy Control
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Solution Overview
Problem
Existing methods for additive manufacturing of articles with magnetic anisotropy often fail to align magnetic properties in desired directions, leading to suboptimal performance in electrical machines and systems.
Innovation Solution
A method using selective laser melting (SLM) or other additive manufacturing systems to control magnetic anisotropy by varying build parameters such as energy beam direction, heat extraction, and layer orientation, allowing for alignment of magnetic properties in specific directions through layer-by-layer construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional additive manufacturing methods are used to produce magnetic articles, then manufacturing capability is achieved, but magnetic anisotropy cannot be aligned in desired directions
Solution Approach 1:
The patent applies parameter changes by systematically varying additive manufacturing process parameters including laser power, scan speed, hatch spacing, layer thickness, and build orientation to control crystallographic texture and magnetic anisotropy alignment. This enables precise control of magnetic properties while maintaining additive manufacturing capability.
Solution Approach 2:
The patent introduces dimensional control by manipulating build orientation and layer stacking sequences to achieve three-dimensional magnetic anisotropy alignment. By varying the orientation of successive layers and their relative rotations, the patent creates complex magnetic flux paths that cannot be achieved with conventional single-direction alignment methods.
2Reliability
If magnetic anisotropy is controlled through additive manufacturing, then electrical machine performance improves, but process complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the magnetic article into multiple layers with different orientations and processing parameters. Each layer can be independently optimized for specific magnetic properties, allowing complex overall magnetic architectures to be built from simpler modular units with controlled anisotropy alignment.
Solution Approach 2:
The patent implements dynamic control of manufacturing parameters during the additive process, adjusting laser power, scan patterns, and build orientation in real-time based on the desired magnetic anisotropy profile. This dynamic adaptation enables precise magnetic property control while managing process complexity through automated parameter adjustment.
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
Enables the creation of articles with controlled and nonlinear magnetic anisotropy, improving the performance of electrical machines by aligning magnetic properties in desired directions, enhancing magnetic circuit efficiency and reducing losses.
Implementation Method 1
controlling build parameters to a crystal growth rate and heat extraction that generate a desired magnetic anisotropy
Implementation Method 2
controlling build parameters to a crystal growth rate and heat extraction that generate a desired magnetic anisotropy
Implementation Method 3
directing an energy beam at selected portions of the metal powder layer to melt the layer to form a metallic layer
Data Source
AI summary
A method for additive manufacturing of an article having a controlled magnetic anisotropy includes: forming a metallic layer of the article using additive manufacturing, the metallic layer having a magnetic anisotropy aligned in a first direction; forming a subsequent metallic layer of the article using additive manufacturing, the subsequent metallic layer having the magnetic anisotropy aligned in a second direction different from the first direction; and repeating the forming of subsequent metallic layers of the article to form at least a portion of the article, each subsequent metallic layer having the magnetic anisotropy aligned in a different direction than a previous metallic layer.