Metal founding – Process – With measuring – testing – inspecting – or condition determination
Patent
1982-03-11
1984-04-10
Hampilos, Gus T.
Metal founding
Process
With measuring, testing, inspecting, or condition determination
164449, 164450, 164451, B22D 1116
Patent
active
044415419
ABSTRACT:
The level of a melt in a vertically reciprocating continuous-casting mold is detected by a method wherein a nonhomogeneous steady magnetic field is formed extending horizontally through the mold into the melt generally at the melt level. This field is vertically reciprocated jointly and synchronously with the mold and its field strength is detected at a sensing location after the field passes through the mold. This location is also vertically reciprocated jointly and synchronously with the mold. The melt level is derived from the detected field strength, normally taking into account melt conductivity and relative displacement rate of the mold and melt. With the use of a steady field the effect of the mold is automatically eliminated as the field does not move appreciably relative to the mold, so it generates virtually no eddy currents in it that would generate secondary fields.
REFERENCES:
patent: 3519060 (1970-07-01), Vischulis
patent: 3537505 (1970-11-01), Thalmann
patent: 4175612 (1979-11-01), Baumert
patent: 4212342 (1980-07-01), Linder
Arbed S.A.
Dubno Herbert
Hampilos Gus T.
Ross Karl F.
Seidel Richard K.
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