Apparatus for the countergravity casting of metals

Metal founding – Including means to directly apply magnetic force to work or... – By electromagnetic means

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164134, 164155, 164259, 164337, 164457, 164500, B22D 1804, B22D 1808

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active

051782030

ABSTRACT:
A counter-gravity metal casting apparatus (10) comprises a reservoir (14) having a casting chamber (46) therein. An electro-magnetic pump (66) is accommodated in the chamber (b 46) and is responsive to input voltage for pumping molten metal from the chamber (46) into an above-situated distribution vessel (78) and mold (12). The chamber 46) is enclosed by cover (40) and supplied with inert gas (60) for purging the space (62) above the metal or outside atmospheric contaminated gases. A feed back controller (98) is also provided for continuously measuring the actual pressure of the pumped metal of the casting cycle and then controlling the output of the pump (66) to conform the actual metal pressure with an ideal reference metal pressure versus casting cycle time schedule.

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patent: 3961662 (1976-06-01), Balevski et al.
patent: 4030538 (1977-06-01), Carbonnel
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patent: 4585050 (1986-04-01), Merrien et al.
patent: 4714102 (1987-12-01), Koya
patent: 4741381 (1988-05-01), Nishida et al.
patent: 4860820 (1989-08-01), Pereira
patent: 4967827 (1990-11-01), Campbell

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