Apparatus for and a method of producing moulding sand for moulds

Details Apparatus for and a method of producing moulding sand for moulds Apparatus for and a method of producing moulding sand for moulds

1988-11-07

1990-04-10

Godici, Nicholas P.

Metal founding

Process

With measuring, testing, inspecting, or condition determination

164 6, 164154, 366132, 366152, 366161, B22C 504, B22C 518

Patent

active

049151606

ABSTRACT:
A mould forming mix of ingredients including sand, a binder, and a catalyst blend is produced. The catalyst blend includes at least two catalysts one of which is slow acting and the other of which is fast acting. The ratio of the fast and slow catalysts used to make up the catalyst blend depends on the time to hardening required, and the temperature of the sand. A data processor is used to combine information concerning the hardening time, the temperature, and the rate at which materials are fed to a mixing unit, and to process the information in order to operate catalyst suppliers which supply the fast and slow catalysts.

REFERENCES:
patent: 3494412 (1970-02-01), Abraham
patent: 3958795 (1976-05-01), Boenisch
patent: 3966174 (1976-06-01), Deve
patent: 4121646 (1978-10-01), Rikker
patent: 4304286 (1981-12-01), Waldron
patent: 4598759 (1986-07-01), Allread et al.

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