Flux for refinement of pro-eutectic silicon crystal grains in hi

Details Flux for refinement of pro-eutectic silicon crystal grains in hi Flux for refinement of pro-eutectic silicon crystal grains in hi

1976-09-10

1977-10-11

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Compositions

Loose particulate mixture containing metal particles

75148, C22B 910, C22C 2102

Patent

active

040533042

ABSTRACT:
A grain-refining flux in the form of vitrified spheroids, ranging in diameter from about 5 to 40 mm., and consisting of, by weight, 95 - 65% of sodium hexametaphosphate and 5 - 35% of alumina. It is highly effective irrespective of the Si content of the aluminum alloy material as well as of the casting thickness. It is quite easy to handle in practical application, not producing any harmful gases, and can be safely stored owing to its lack of hygroscopicity.

REFERENCES:
patent: 1940922 (1933-12-01), Sterner-Rainer
patent: 3953202 (1976-04-01), Rasmussen

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