Metal founding – Process – Disposition of a gaseous or projected particulate molten...
Patent
1981-12-04
1984-12-04
Godici, Nicholas P.
Metal founding
Process
Disposition of a gaseous or projected particulate molten...
264 12, 425 7, B22D 2300
Patent
active
044858345
ABSTRACT:
The die comprises at least one set of opposed linearly configurated die elements spaced in substantially parallel relationship to define a longitudinally configurated die space therebetween dimensioned to pass therethrough a sheet of the molten material, the die elements defining a nozzle assembly characterized by oppositely disposed orifice-bearing surfaces. Each of the linear die elements has a gas pressure manifold for receiving atomizing gas under superatmospheric pressure, each of the oppositely disposed nozzle-defining surfaces having at least one array of orifices extending therealong and embracing each side of the longitudinally configurated die space defined by the oppositely disposed linear die elements. Conduits are provided for communicating the orifices with the gas manifold, the array of orifices in each of the die elements being convergently directed towards the other through an included angle of, for example, 40.degree. for directing atomizing gas against a predetermined focal region on a sheet of molten material passing through the longitudinal die space, each of the orifice conduits connected to resonating cavities for generating ultrasonic, high frequency shock waves for one-step disintegration of the sheet of molten material at said focal region into fine atomized particles which later solidify. The uses include the production of dry powders and liquid dynamically densified shapes, such as ingots, forging and rolling preforms and highly dense compacts.
REFERENCES:
patent: 2997245 (1961-08-01), Nilsson
patent: 3663206 (1972-05-01), Lubanska
patent: 3826301 (1974-07-01), Brooks
patent: 4066117 (1978-01-01), Clark
patent: 4374789 (1983-02-01), Stuck
Godici Nicholas P.
Musselman, Jr. P. Weston
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