Arrangement for measuring the bath level in a continuous casting apparatus

US4420250A · kind A · utility

Assignee

• Endress u Hauser GmbH u Co. · DE

Inventor

• Gunter Kompa · Lippstadt, DE

Key dates

• Filing date: Jul 25, 1980
• Grant date: Dec 13, 1983
• Expiry date: Jul 25, 2000

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22D11/185
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A method of measuring the bath level in a cool tubular mould utilized in a continuous casting process where a melt of metal to be cast is discharged from a container therefor into the mould via an immersion tube vertically extending into a bore through the mould to thereby establish the bath, there being an annular space between the immersion tube and the wall of the bore, and where the melt is soldified by the cooled mould and continuously withdrawn therefrom as a solidified bar. The method includes the steps of transmitting a series of light pulses from a transmission point in a first direction through an elongated tube horizontally disposed above the mould to the side thereof having a right-angle bend therein to a common deflecting mirror disposed at the bend; deflecting the light pulses from the common deflecting mirror into the annular space between the immersion tube and mould bore in a direction parallel to the vertically extending immersion tube and onto the surface of the bath; reflecting pulses from the bath surface through the annular space back to the common deflecting mirror; deflecting the reflected pulses from the mirror through the tube in a direction opposite to th…