Metal founding – Process – With measuring – testing – inspecting – or condition determination
Patent
1980-03-13
1981-12-08
Baldwin, Robert D.
Metal founding
Process
With measuring, testing, inspecting, or condition determination
164154, 164159, 164526, B22C 122
Patent
active
043042864
ABSTRACT:
In the manufacture of moulds or mould cores, refractory sand, a resin binder and a catalyst are passed into a mixer to form a free-flowing mixture from which the moulds or mould cores are made. As the sand is fed into the mixer it is cooled by contact with an atmospheric gas in liquid or solid state or the cold vapor of such a gas so as to keep the temperature of the sand as it enters the mixer below that at which the resin cures. To enable the sand to be delivered below a chosen temperature from a quarry to a foundry where the sand is used, the sand after quarrying and drying is fluidized by air, an atmospheric gas in liquid or solid state being introduced into the fluidizing air so as to lower its temperature.
REFERENCES:
patent: 3472307 (1969-10-01), Godding
patent: 3919162 (1975-11-01), Austin
patent: 3947420 (1976-03-01), Bardet
patent: 4150704 (1979-04-01), Hoult
Baldwin Robert D.
Batten, Jr. J. Reed
BOC Limited
Cassett Larry R.
Rae David L.
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