Metallurgical apparatus – Means for melting or vaporizing metal or treating liquefied... – By providing – treating or protecting environment – e.g. – vacuum
Patent
1991-10-25
1993-03-09
Kastler, Scott
Metallurgical apparatus
Means for melting or vaporizing metal or treating liquefied...
By providing, treating or protecting environment, e.g., vacuum
266242, B22D 1800
Patent
active
051924889
ABSTRACT:
An apparatus for heating molten metal including a ladle provided with a refractory heat insulating material and first core members arranged in pairs and attached to the outer circumference of the ladle. A tray capable of mounting said ladle carries second cores with magnetic pole portions at both ends of said cores as to face the ladle mounted first cores. A coil is provided for exciting the second cores. The first cores and magnetic pole portions of second cores are located at the outer circumferential portion of the ladle to face each other radially in a manner to facilitate placement and removal of the ladle to and from the tray. Position sensors are provided to ensure positional accuracy of the first ladle carried cores and the poles of the second cores. The coils are physically and thermally protected from ladle heat by appropriate shock absorbing and thermal insulating provisions. Thermal protection of the cores can be further enhanced by cooling embodiments. The ladle, or the ladle and tray, may be enclosed in a vacuum chamber.
REFERENCES:
patent: 3677332 (1972-07-01), Smiernow
patent: 4336411 (1982-06-01), Hanas et al.
patent: 4618964 (1986-10-01), Larsson et al.
patent: 4735256 (1988-04-01), Kollberg et al.
Fuji Electric & Co., Ltd.
Kastler Scott
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