Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1988-11-08
1990-05-08
Seidel, Richard K.
Metal founding
Process
Shaping liquid metal against a forming surface
164122, 164483, 164494, B22D 2300, B22D 2702
Patent
active
049229958
ABSTRACT:
A method of producing monolithic metal blanks by freezing-on techniques resides in that the surface of a liquid metal melt is heated with the formation of a variable temperature field, defined by the temperature gradient between heating zones and cooling zones. The lines of equal temperatures constitute isotherms. The heating zones are disposed so that the isotherms having a temperature close to the crystallization temperature T.sub.c repeat the shape of the cross-section of the blank to be produced. A dummy bar is immersed equidistantly to the isotherm with the temperature of crystallization T.sub.c. Subsequent drawing out of the dummy bar from the melt with a linear speed defined by the rate of crystallization results in the formation of the blank.
REFERENCES:
patent: 3620686 (1971-11-01), Pfann
patent: 4177058 (1979-12-01), Paton et al.
patent: 4552200 (1985-11-01), Sinha et al.
patent: 4583580 (1986-04-01), Hunt
"Casting by Freezing-On Techniques", by G. F. Balandin, 1962, Mashgiz, Moscow, pp.7-16 and 251 (no translation).
Chernenko Evgeny V.
Gorba Naum A.
Movchan Boris A.
Panna Vladimir A.
Institut Elektrosvarki Imeni E.O. Patona an USSR
Seidel Richard K.
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