US 6,679,936 B2 · Molten metal degassing apparatus

Abstract

A tool or fluxing head for fluxing molten metal that comprises a fluxing gas supply line that communicates with the interior of an inverted plunger cup providing a hollow interior into which refining agents and other additives that are to be introduced into a molten metal can be incorporated. In use, the fluxing head is introduced into a molten metal body with the plunger cup in the inverted position. The inverted plunger cup has a closed top at the point where the gas supply line enters and an open bottom that allows molten metal to enter the inverted cup to make contact with the refining agent or other additive. Apertures are provided in the wall of the inverted plunger cup to allow gas introduced therein to escape therefrom. According to a preferred embodiment, a porous layer is provided at the top of the inverted plunger cup to allow for the escape of gas into the molten metal through the porous layer.

Claims9

Dependent claims

A molten metal fluxing apparatus for vertical plunging into a body of molten metal comprising:

A) an inverted plunger cup having a top, a peripheral wall, an open bottom and an interior;
B) a passage in said top for the admission of a fluxing gas into said interior;
C) a plurality of apertures in said peripheral wall that permit escape of said fluxing gas from said interior when said inverted cup is immersed in a body of molten metal;
and
D) a porous disc in said top between said top and said interior and having an outer periphery, said porous disc receiving fluxing gas from said passage and permitting a first portion of said fluxing gas to escape about said outer periphery and allowing passage of a second portion of said fluxing gas into said interior.

2 more elements

Dependencies are inferred from the claim text.

Molten metal degassing apparatus

Life of this patent

Molten metal degassing apparatus

Life of this patent

Abstract

Claims9