Process for protecting against oxidation and/or nitridation of a

Details Process for protecting against oxidation and/or nitridation of a Process for protecting against oxidation and/or nitridation of a

1986-08-12

1989-02-21

Godici, Nicholas P.

Metal founding

Process

Shaping liquid metal against a forming surface

164415, 222603, 266207, B22D 1104, B22D 1110

Patent

active

048056880

ABSTRACT:
Process for protecting against oxidation and/or nitridation of a liquid metal stream flowing from the outlet orifice of a ladle or a distribution vessel, comprising surrounding the pouring stream with a tube substantially throughout the height of the stream and injecting a protective gas at least around the pouring stream so as to minimize the contact of the molten metal with the ambient air and avoid the dilution of the protective gas and the aspiration of ambient air. A device for carrying out the process includes two complementary semi-shells for surrounding the pouring stream and a hinge articulating the semi-shells for opening and closing the latter.

REFERENCES:
patent: 3439735 (1969-04-01), Holmes
patent: 3616843 (1971-11-01), Newhall et al.
patent: 4270595 (1981-06-01), Coward
patent: 4565239 (1986-01-01), Meier

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