Metal founding – Process – Shaping a forming surface
Patent
1985-10-16
1987-01-06
Godici, Nicholas P.
Metal founding
Process
Shaping a forming surface
164 45, 164246, 521189, B22C 904, B22C 702
Patent
active
046339299
ABSTRACT:
Metal castings having reduced residual carbon ash and surface flaws are produced by an evaporative pattern casting process, in which an organic foam pattern is vaporized upon contact with a molten metal leaving a metal replica of the pattern. The organic foam used in this process comprises a polymer formed by polymerizing CO.sub.2 with one or more oxirane compounds.
REFERENCES:
patent: 3248415 (1966-04-01), Stevens
patent: 3351123 (1967-11-01), Payne
patent: 3585168 (1971-06-01), Inoue
patent: 3942583 (1976-03-01), Baur
patent: 3953383 (1976-04-01), Inoue et al.
Santangelo Joseph G.
Sinclair Richard G.
Tenaglia Richard D.
Weber James J.
Air Products and Chemicals Inc.
Godici Nicholas P.
Heinrich Samuel M.
Innis E. Eugene
Rodgers Mark L.
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