METAL LEVEL OVERSHOOT OR UNDERSHOOT MITIGATION AT TRANSITION OF FLOW RATE DEMAND

Automated processes and systems dynamically control the delivery rate of molten metal to a mold during a casting process. Such automated processes and systems can include automatically controlling a flow control device (such as a control pin) during a first phase of casting to modulate molten metal...

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Bibliographische Detailangaben
Hauptverfasser: MCCALLUM, JOHN ROBERT BUSTER, SINDEN, AARON DAVID, WAGSTAFF, ROBERT BRUCE
Format: Patent
Sprache:eng ; pol
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Beschreibung
Zusammenfassung:Automated processes and systems dynamically control the delivery rate of molten metal to a mold during a casting process. Such automated processes and systems can include automatically controlling a flow control device (such as a control pin) during a first phase of casting to modulate molten metal flow or flow rate, moving the flow control device in a transition time between the first phase and a second phase toward a substitute flow control device position determined based on a difference between a first projected flow rate of the first phase and a second projected flow rate of the second phase, and resuming automatic control of the flow control device during the second phase based on the detected metal level and the metal level setpoint. Overshoot and/or undershoot can additionally or alternatively be mitigated by translating the mold or altering the cast speed.