Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1976-06-23
1978-02-14
Husar, Francis S.
Metal founding
Process
Shaping liquid metal against a forming surface
164 76, 164 82, 164 86, B22D 1104, B22D 1108
Patent
active
040733335
ABSTRACT:
A method of continuous casting of an ingot by way of its recurrent upward drawing from a radial cooled mould into which molten metal is forced from a bottom of a supply vessel. Pressure is increased inside the ingot being formed in the period of a pause between its drawing from the mould for a tighter fitting of the ingot skin to the walls of the mould, and, once the ingot skin of a prescribed thickness is solidified, the pressure is reduced in the molten metal enclosed by the skin. Thereafter a hole is made in the upper butt portion of the ingot skin and a neutral gas is fed through the hole until the levels of the molten metal in the mould and in the supply vessel are equalized; then the ingot is drawn from the mould. The newly formed upcast branch of the ingot envelope is reduced with the aid of rolls in the course of drawing to a continuous section of a prescribed shape, the volume of a neutral gas (gas cushion) enclosed by the envelope being ahead of the reducing rolls. The method is good for the production of flat, profiled and multilayer ingots.
REFERENCES:
patent: 3302252 (1967-02-01), Woodburn, Jr.
patent: 3445922 (1969-05-01), Leghorn
patent: 3653427 (1972-04-01), Evans
patent: 3669176 (1972-06-01), Krall et al.
patent: 3680624 (1972-08-01), Watts
Arshansky Mikhail I.
Baimov Nikolai I.
Efremov Petr E.
Konovalov Georgy F.
Korshunov Evgeny A.
Hampilos Gus T.
Husar Francis S.
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