Method for making foundry moulds and cores utilizing a gas catal

Details Method for making foundry moulds and cores utilizing a gas catal Method for making foundry moulds and cores utilizing a gas catal

1974-02-13

1976-02-17

Husar, Francis S.

Metal founding

Process

Shaping a forming surface

B22C 912

Patent

active

039385787

ABSTRACT:
Foundry moulds or cores are made by putting a mixture of foundry sand and acid-hardenable binder into a mould or core box, hardening the binder by passing an acidic gas through the mixture, removing the mould or core from the box and applying to its surface a material which will neutralise or adsorb acidic gases. The neutralising or adsorbent material permits avoidance of the health hazard of emission of acidic gas from the mould or core on storage or during use.

REFERENCES:
patent: 2313672 (1943-03-01), Salzberg et al.
patent: 2521839 (1950-09-01), Feagin
patent: 3008205 (1961-11-01), Blaies, Jr.
patent: 3145438 (1964-08-01), Kottke et al.
"How to Use Phenolic Casting Resins for Pattern Coatings," By E. J. McAffee, American Foundryman, Vol. 17, No. 2, pp. 27-28, Feb. 1950.

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