Foundry sand core removal and recycle

Details Foundry sand core removal and recycle Foundry sand core removal and recycle

1994-03-04

1995-06-13

Batten, Jr., J. Reed

Metal founding

Process

Shaping liquid metal against a forming surface

164 5, 241DIG10, B22D 2900

Patent

active

054233704

ABSTRACT:
Metal parts formed by casting in a foundry and which contain the sand cores used to form internal passages are cleared of the sand cores by subjecting them to temperatures sufficient to pyrolyze and/or combust the bonding agents holding the sand cores together, in a fluidized-bed furnace.

REFERENCES:
patent: 4177952 (1979-12-01), Rikker
patent: 4411709 (1983-10-01), Nakanishi
patent: 4636168 (1987-01-01), Sandstrom et al.
patent: 4738615 (1988-04-01), Bailey et al.
patent: 5253698 (1993-10-01), Keough et al.
patent: 5271450 (1993-12-01), Bailey
patent: 5279741 (1994-01-01), Schott
patent: 5294094 (1994-03-01), Crafton et al.

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