Control system, computer program product, device and method

US7669638B2 · kind B2 · utility

Assignee

• ABB AB · SE

Inventors

• Sten Kollberg · Västerås, SE
• Jan-Erik Eriksson · Visby, SE
• Carl-Fredrik Lindberg · Bromma, SE
• Mats Molander · Hagfors, SE
• Peter Lofgren · Jokkmokk, SE
• Gote Tallback
• Rebei Bel Fdhila · Hagfors, SE
• Bertil Samuelsson · Hagfors, SE
• Stefan Israelsson Tampe · Västerås, SE
• Christina Wallin · Hagfors, SE

Key dates

• Filing date: Nov 28, 2003
• Grant date: Mar 2, 2010
• Expiry date: Nov 28, 2023

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22D11/16
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A control system for regulating the flow of liquid metal in a device for casting a metal. A detector measures a process variable. A control unit evaluates data from the detector. At least one process parameter is automatically varied in order to optimize casting conditions. The detector measures a characteristic of the meniscus at at least two points on the meniscus instantaneously throughout the casting process.