High Frequency Current Framework for Rapid Metal Part Manufacturing
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Solution Overview
Problem
Conventional additive manufacturing is inefficient for mass production due to the time-consuming nature of part creation and high likelihood of errors from numerous operating variables, making it unsuitable for producing complex parts at scale.
Innovation Solution
A system comprising a high frequency, high current power source, rectifier, electrical conduit, cooler, and framework, where the framework is made of high melting point, electrically resistive metal and encased in powdered metal, using pulsed DC current and magnetic fields to rapidly heat and solidify metal into desired shapes, minimizing errors through controlled heating and cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional additive manufacturing is used to create parts with unrestricted design, then design flexibility is improved, but manufacturing time increases significantly
Solution Approach 1:
The invention changes the fundamental parameters of the manufacturing process by using high frequency (20-100 kHz) and high current (100-1000 A) electrical fields to rapidly heat and melt metal powder, reducing the time required to build parts from layers to instantaneous solidification, thereby maintaining design flexibility while dramatically increasing production speed
Solution Approach 2:
The system employs periodic pulsed electrical fields at high frequency to sequentially melt and solidify metal powder, creating parts through rapid repeated cycles of heating and cooling that maintain design freedom while achieving mass production speeds
2Adaptability or versatility
If conventional additive manufacturing uses many operating variables to achieve complex part designs, then design capability is improved, but error rate increases
Solution Approach 1:
The invention reduces the number of operating variables by changing to a high frequency, high current electrical field process with only a few critical parameters (frequency, current amplitude, pulse duration), thereby maintaining the ability to create complex parts while significantly reducing manufacturing errors and defects
Solution Approach 2:
The system incorporates feedback control mechanisms that monitor the electrical field parameters and adjust them in real-time to maintain optimal melting and solidification conditions, reducing errors while preserving design complexity capability
3Adaptability or versatility
If conventional additive manufacturing builds parts layer by layer, then design freedom is maintained, but production time increases
Solution Approach 1:
The invention exploits rapid phase transitions of metal powder from solid to liquid and back to solid through controlled electrical heating and cooling, enabling parts to be built without sequential layer deposition, thereby maintaining design freedom while reducing production time from hours to minutes
Solution Approach 2:
The system performs preliminary heating of the metal powder and framework before actual part formation, and uses pre-configured magnetic fields to guide material placement, eliminating the need for time-consuming layer-by-layer construction while preserving design flexibility
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
Facilitates faster production of complex parts with reduced error rates by simplifying the manufacturing process, enabling mass production and allowing for quicker setup and part design without layer-by-layer material deposition considerations.
Implementation Method 1
a high frequency, high current electrical signal, modified by the rectifier, passes through the framework. This causes the framework to heat up and/or create magnetic fields near the framework. Powdered metal near the framework transitions to a molten state due to heat generated by the magnetic fields
Implementation Method 2
a high frequency, high current electrical signal, modified by the rectifier, passes through the framework. This causes the framework to heat up
Implementation Method 3
Powdered metal farther away from the framework is attracted to the framework via the magnetic fields
Implementation Method 4
The cooler is then activated to cool the powdered metal. In one embodiment, the cooler rapidly cools some of the outer-most molten metal (relative to the framework) to its solid state
Data Source
AI summary
A system for manufacturing a part, the system comprising a power source, a rectifier, an electrical conduit, and a framework. The power source is configured to generate a high frequency, high current electrical signal. The rectifier is configured to convert the electrical signal to a direct current electrical signal. The electrical conduit is configured to carry the electrical signal. The framework is formed of electrically resistive metal having a relatively high melting point and is connected to the electrical conduit and at least partially encased in a powdered metal having a melting point lower than the melting point of the framework so that transmission of the electrical signal through the framework transitions at least some of the powdered metal into its molten state so that at least some of the molten metal cooled into its solidified state forms at least a portion of the part.