Casting powder

Details Casting powder Casting powder

1974-10-03

1978-11-07

Ansher, Harold

Compositions

Electrolytes for electrical devices

106 3827, 106 389, 252182, 252350, B22D 1110, B28B 736

Patent

active

041245156

ABSTRACT:
A casting powder for steel having, for example, ground blast furnace slag, and/or sand and caustic lime CaF.sub.2 as basic substances with further additives which include up to 10% of additives decomposing completely at temperatures below 600.degree. C under development of gas whereby the mole-volume of developed gas per mole-weight gas-generating additive (m.sup.3 /Kg) is not smaller than 0.5. Ammonium nitrite or ammonium carbonate is preferred whereby the gaseous decomposition products will be nitrogen, water vapor and/or carbon dioxide.

REFERENCES:
patent: 1725039 (1929-08-01), Williams
patent: 1895639 (1933-01-01), Mond
patent: 3254380 (1966-06-01), Belcher
patent: 3870529 (1975-03-01), Okumoto et al.
patent: 3874885 (1975-04-01), Lyas et al.
patent: 3937269 (1976-02-01), Salvadore et al.
patent: 3953219 (1976-04-01), Takashima

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