3D Metal Part Authentication Using Embedded Microstructure Marks
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Solution Overview
Problem
Traditional anti-counterfeiting methods are unsuitable for metal components in additive manufacturing, as they increase production costs and time, and existing solutions fail to effectively authenticate metal parts due to their high melting temperatures.
Innovation Solution
A method and apparatus for additively manufacturing three-dimensional metal articles that incorporate an anti-counterfeiting mark by varying the microstructure of the metal powder during the additive manufacturing process using electromagnetic radiation, creating a distinguishable grain structure and orientation within the article, which can be authenticated through microscopic examination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional anti-counterfeiting labeling techniques (ink or polymer labels) are used on metal components, then authentication capability is provided, but the labeling cannot withstand the high melting temperatures of metal parts
Solution Approach 1:
The invention changes the physical state and composition of the marking material from organic (ink/polymer) to inorganic (metal powder with different composition or phase). By using metal powder that can withstand high temperatures and applying it through additive manufacturing, the marking maintains its integrity at temperatures that would melt traditional labeling materials, thus resolving the temperature compatibility issue while preserving authentication capability
Solution Approach 2:
The invention uses composite material approach by incorporating metal powder with distinct microstructural characteristics into the metal component during additive manufacturing. The marking region contains a different metal powder composition or phase than the base material, creating a composite structure that provides both temperature resistance and authentication features through microstructural analysis
2Reliability
If embedded nanoparticles, stamping, coatings, adhesives, or DNA markings are used for anti-counterfeiting, then authentication capability is provided, but manufacturing cost and process time increase
Solution Approach 1:
The invention merges the anti-counterfeiting marking process with the primary additive manufacturing process itself. By controlling the deposition of metal powder during the same manufacturing cycles that build the functional component, the authentication features are created simultaneously with the part geometry, eliminating separate post-processing steps and reducing both time and cost
Solution Approach 2:
The invention performs preliminary action by embedding the authentication marking during the initial manufacturing process rather than adding it later. The metal powder marking is deposited and sintered along with the base component in the same build process, preventing the need for subsequent costly and time-consuming post-manufacturing operations
3Reliability
If metal powder microstructure is varied to create anti-counterfeiting marks, then authentication capability is provided, but manufacturing process complexity increases
Solution Approach 1:
The invention applies local quality by varying the metal powder properties (composition, phase, or particle morphology) only in specific marking regions while maintaining standard powder characteristics in the functional areas of the component. This localized modification creates distinguishable microstructural features for authentication without requiring complex process changes across the entire manufacturing system
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 enables the cost-effective and efficient integration of anti-counterfeiting marks within metal components, ensuring authenticity without altering the manufacturing process significantly and allowing for visible authentication under magnification.
Implementation Method 1
successively building up said article from a metal powder by an additive manufacturing process by scanning a selected portion of said metal powder with electromagnetic radiation
Implementation Method 2
forming an anti-counterfeiting mark in said article during said additive manufacturing process... establishing an anti-counterfeiting mark microstructure of said anti-counterfeiting mark
Data Source
Figure 1
Figure 2
Figure 3~6
AI summary
An apparatus and method for manufacturing and authenticating a three-dimensional article (200) including the steps of (1) successively building up the article from a metal powder (116) by an additive manufacturing process by scanning a selected portion of the metal powder (116) with electromagnetic radiation (106), (2) forming an anti-counterfeiting mark (206) in the article during the additive manufacturing process, and (3) determining whether the article includes the anti-counterfeiting mark (206).