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Creators/Authors contains: "Henjum, John"

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  1. ; ; ; ; ; ; (, LMPC 2022 - Proceedings of the Liquid Metals Processing & Casting Conference 2022)
    Krane, Matthew; Kharicha, Abdellah; and Ward, Mark (Ed.)
    This work describes the utilization of applied transverse magnetic fields to influence the arc dynamics during laboratory and industrial VAR melting. The arc motion was monitored with VARmetricTM as an external sensing platform to inform the system on the resultant direction and magnitude of the arcs due to the applied transverse magnetic field. Electromagnetic coils were mounted outside of the VAR in order to produce the near-uniform transverse magnetic field inside the furnace. These fields interact with the arc in a precise and measurable way, providing a control mechanism for arc motions and distributions. Results are provided for conditions where the applied fields were chosen such that the resultant force forces the arcs into non-ideal distributions, replicating potential deleterious operating conditions that could lead to defects. Results at both laboratory and industrial scale are provided and, wherever possible, ingots were sectioned, and the resulting grain structures were analyzed for defects. 
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    Accepted Manuscript Full Text Available
  2. ; ; ; ; ; ; (, Proceedings of the Liquid Metals Processing & Casting Conference 2022)
    Krane, Matthew; Kharicha, Abdellay; and Ward, Mark (Ed.)
    This work describes the utilization of applied transverse magnetic fields to influence the arc dynamics during laboratory and industrial VAR melting. The arc motion was monitored with VARmetricTM as an external sensing platform to inform the system on the resultant direction and magnitude of the arcs due to the applied transverse magnetic field. Electromagnetic coils were mounted outside of the VAR in order to produce the near-uniform transverse magnetic field inside the furnace. These fields interact with the arc in a precise and measurable way, providing a control mechanism for arc motions and distributions. Results are provided for conditions where the applied fields were chosen such that the resultant force forces the arcs into non-ideal distributions, replicating potential deleterious operating conditions that could lead to defects. Results at both laboratory and industrial scale are provided and, wherever possible, ingots were sectioned, and the resulting grain structures were analyzed for defects. 
    more » « less
    Accepted Manuscript Full Text Available