Document Type and Number:
Japanese Patent JPH0238308
Kind Code:
B2
Abstract:
An improved system for detecting the location of a molten metal/slag interface during the casting of electroslag remelted hollows is provided. The system includes a gamma ray radiation source (30) and a scintillation counter (40). The source (30) and counter (40) reside outside the casting crucible (1) and are held in fixed spatial relationships with respect to one another and with respect to the mandrel (10). The radiation from the source (30) is directed through the crucible (1) and through the annular casting zone (9) defined between the sidewalls of the upwardly driven mandrel (10) and the crucible (1). The counter (40) provides an electrical signal responsive to the rate of radiation events detected thereby.
Inventors:
BAANAADO HARISU
HAWAADO JEI KUREIN
HAWAADO JEI KUREIN
Application Number:
JP14396682A
Publication Date:
August 29, 1990
Filing Date:
August 19, 1982
Export Citation:
Assignee:
HAYNES INT INC
International Classes:
B22D7/04; B22D2/00; B22D23/06; B22D23/10