Process for preventing contamination of high temperature melts

Details Process for preventing contamination of high temperature melts Process for preventing contamination of high temperature melts

1989-09-07

1990-05-15

Envall, Jr., Roy N.

Industrial electric heating furnaces

Electron beam furnace device

373 18, 21913001, H01J 37305, H05H 700

Patent

active

049264397

ABSTRACT:
A method of reducing "fall back" contamination caused by high intensity heating of metals is taught. Splatter, vapor droplets and particulate matter resulting from the high intensity heating is repelled to avoid return to the melt. An electric field is established above the heating zone to repel the vapor droplets and particles from at least one charged electrode disposed above the surface where high intensity heat is applied to a metal surface.

REFERENCES:
patent: 3437734 (1969-04-01), Roman et al.
patent: 3562141 (1971-02-01), Morley

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