Cold hearth melting configuration and method

Details Cold hearth melting configuration and method Cold hearth melting configuration and method

1985-04-19

1987-03-31

Envall, Jr., Roy N.

Industrial electric heating furnaces

Arc furnace device

Furnace body detail

222591, 266271, 266236, 373 83, H05B 720, F27D 314

Patent

active

046548580

ABSTRACT:
A cold hearth melting system has confining side wall area made of high thermal conductivity material and has as its bottom a diaphragm containing an orifice through which metal melted in the cold hearth is discharged. The diaphragm is made, at least in the central portion thereof containing the orifice, of material selected from the group consisting of tungsten, an alloy containing tungsten and having a melting point of at least about 3000.degree. C., cemented tungsten carbide and tantalum carbide.

REFERENCES:
patent: 2871533 (1959-02-01), Swainson
patent: 3484840 (1969-12-01), Spoth et al.
patent: 3734480 (1973-05-01), Zanis et al.
patent: 3994346 (1976-11-01), Brown
patent: 4471831 (1984-09-01), Ray
D. Eylon, F. H. Froes, R. W. Gardiner, "Developments in Titanium Alloy Casting Technology", Journal of Metals, Feb. 1983.
C. Liesner, "Titanium Investment Casting-Production, Properties and Applications", Titanium Science and Technology, vol. 1, 1984.

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