Method of making a casting powder

Details Method of making a casting powder Method of making a casting powder

1977-04-06

1978-11-28

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 57, 75 93G, C21C 700

Patent

active

041274075

ABSTRACT:
A casting powder which consists of lime, alumina and silicates (or silica), with or without alkali-metal compounds serving as fluxing agents, is made by expanding the particles from a particle size of less than 40 microns to a particle size in excess of 60 microns so that the particles are generally in the form of hollow bodies. The casting particles thus have a highly insulating character and are above the dust limit so as to reduce their environmental hazard.

REFERENCES:
patent: 3301663 (1967-01-01), Wicher
patent: 3309196 (1967-03-01), Kaneko
patent: 3320052 (1967-05-01), Bowden
patent: 3681050 (1972-08-01), Ueki
patent: 3681051 (1972-08-01), Takashima
patent: 3746620 (1973-07-01), Vance
patent: 3760140 (1973-06-01), Kretschmer
patent: 3826695 (1974-07-01), Leicher

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