Gas atomizer for spray casting
AssigneeOlin Corporation
InventorsSankaranarayanan Ashok, Harvey P. Cheskis
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Abstract
A gas-atomizing system for spray casting a spray of molten metal on a moving substrate in which the gas atomizing device is in the form of an annulus having a central opening therethrough through which the molten metal to be atomized flows. The annulus is provided with a plenum chamber which communicates with elongated openings on the bottom surface of the annulus. The manifold and outlets are so arranged that a divergent conical spray pattern is produced having a central axis inclined with respect to the vertical axis of the molten metal stream in a direction downstream of the moving substrate upon which the spray material is deposited.
Claims26
In a molten metal gas-atomizing spray-deposition apparatus, the combination comprising:
- (a) means for producing a stream of molten metal;
- (b) a gas atomizer for converting said stream of molten metal into a divergent spray pattern, said gas atomizer including an annulus through which said stream of metal flows, said annulus having a plenum chamber therein for receiving pressurized atomizing gas,
- (c) outlets in said annulus communicating with said plenum chamber and spaced around the stream of molten metal, and
- (d) a substrate moving in a given direction and having a spray deposit receiving area in a plane substantially perpendicular to the axis of the stream of the molten metal passing through said annulus, the arrangement of said outlets and manifold being such that the central axis of the divergent spray pattern produced by the atomizing gas acting upon the molten stream is inclined with respect to the moving substrate in a direction downstream of the moving substrate.
The apparatus of claim 2 wherein the inclination of the central axis of the spray pattern is such that the upstream portion of the spray pattern travels a lesser distance to the substrate than the downstream portion.
Dependencies are inferred from the claim text.