B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
B22D 27/20 (2006.01) B22C 9/08 (2006.01) B22D 1/00 (2006.01) C21C 1/10 (2006.01)
Patent
CA 2068772
FS 1484 ABSTRACT METHOD AND APPARATUS FOR THE PRODUCTION OF NODULAR OR COMPACTED GRAPHITE IRON CASTINGS A method for producing nodular or compacted graphite iron castings in a mould having a sprue, an ingate and a mould cavity, having a first part below and a second part above the level of the ingate, comprises delivering particulate magnesium-containing and silicon-containing treatment agent from a dispenser into a stream of molten metal entering the sprue such that the treatment agent is added at a constant rate of addition while the first part of the mould cavity is filled with iron, and at a decreasing rate while the second part is filled. The addition of the treatment agent is controlled by means of apparatus comprising a container, a measuring and data capture device connected via signal transforming means to a control means, conveyor means located below the container and connected to the signal transforming means, and means for injecting the particulate treatment agent into the metal stream.
Eisenacher Wilfried
Fessel Manfred
Foseco International Limited
Gowling Lafleur Henderson Llp
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