Device for identifying the solid-liquid interface of a melt

Metal founding – With signal – indicator or inspection means

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Details

164122, 1643381, B22D 2704, B22D 4101

Patent

active

052320430

ABSTRACT:
In a device for identifying the solid-liquid-interface of a melt while withdrawing the poured full ceramic mold 6 from the heater 7, 8 which at least partially encloses the casting mold 6, the mold 6 is at least partially enclosed by two receiving loops 4, 5 disposed in the inside of the heater 7, 8 and a polarizing transmitting loop 13; the induction or receiving loops 4, 5 are coupled with an electric evaluation circuit 9, 10, 11 and polarizing transmitting loop 13 which is connected to a transmitter 14 sends a signal into the casting mold 6 the level of which is sensed by the receiving loops 4, 5 and the so obtained signals create a value for the solidification of the melt in the casting mold 6 by determining the difference of inductivity between ordered, crystalline and disordered, liquid metal mass.

REFERENCES:
patent: 3897815 (1975-08-01), Smashey
patent: 4144756 (1979-03-01), Linder
patent: 4158379 (1979-06-01), Yarwood et al.
patent: 4178986 (1979-12-01), Smashey
patent: 4415017 (1983-11-01), Yarwood et al.
patent: 4495983 (1985-01-01), Kindlmann et al.
patent: 4602768 (1986-07-01), Tinnes et al.
patent: 4816758 (1989-03-01), Theissen et al.

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