| About this Abstract |
| Meeting |
Liquid Metal Processing & Casting Conference (LMPC 2022)
|
| Symposium
|
Liquid Metal Processing & Casting Conference (LMPC 2022)
|
| Presentation Title |
A Novel Technique to Measure the Arc Gap During Vacuum Arc Remelting Using Magnetic Fields |
| Author(s) |
Daniel McCulley, Matthew Cibula, Nathan Pettinger, Joshua Motley, Paul E. King |
| On-Site Speaker (Planned) |
Daniel McCulley |
| Abstract Scope |
During vacuum arc remelting (VAR) the arc gap is a critical process control variable that is closely coupled to melt rate. These parameters are utilized to indicate deleterious conditions that could lead to product quality concerns. Modern industrial VAR furnaces typically employ drip-short analysis to infer the arc gap which is then provided as feedback back to control the melt rate. The successful implementation of drip-short analysis to control the arc gap requires a uniform electrode geometry and melt stability. However, these criteria are not always met during melting due to events such as constricted arcs, glows, and electrode tip geometry changes (e.g. cupping). A more reliable arc gap measurement can deliver higher quality control standards to the VAR industry. Here we present the development and characterization (including the spatial resolution) of an arc gap tracking and arc gap measurement technique utilizing magnetic field signatures produced during VAR. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |