Method for manufacturing closed-wall cellular metal

Details Method for manufacturing closed-wall cellular metal Method for manufacturing closed-wall cellular metal

2005-04-19

2005-04-19

Andrews, Melvyn (Department: 1742)

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

Reexamination Certificate

active

06881241

ABSTRACT:
Cellular metal foam having closed cell walls is produced by introducing gas bubbles of suitable size and at a suitable rate below the surface of an otherwise non-stirred or non-agitated molten metal bath. For example, aluminum-silicon alloy, including silicon carbide foam stabilization particles has been thus processed into cellular metal of, as low as, one to two percent relative density and with good cell walls and quite regular cell size.

REFERENCES:
patent: 4314835 (1982-02-01), Pelton
patent: 4973358 (1990-11-01), Jin et al.
patent: 5112697 (1992-05-01), Jin et al.
patent: 5334236 (1994-08-01), Sang et al.

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