Process for fabricating one-piece rocket motor heat barrier

Details Process for fabricating one-piece rocket motor heat barrier Process for fabricating one-piece rocket motor heat barrier

1973-12-03

1976-05-11

Hoag, Willard E.

Plastic and nonmetallic article shaping or treating: processes

With step of making mold or mold shaping, per se

264221, 264317, 264318, 264328, 264331, B29C 108, B29D 100, B29G 300

Patent

active

039564533

ABSTRACT:
A method for molding one piece seamless contoured structures. The mold consists of a hollow, cylindrical mold member whose internal surface area defines the external surface of the piece to be molded, that is adaptive to receive a piston having a reservoir containing a fluid plastic and a mandrel mold member of low melting alloy whose shape defines the internal surface of the molded structure. The piston is forced upward to cause the fluid plastic to flow into the interstices and allowed to cure. Heat is applied to the mold assembly to melt the alloy to allow removal of the contoured structure when the mold assembly is disassembled.

REFERENCES:
patent: 1353942 (1920-09-01), Akin
patent: 2079393 (1937-05-01), Benge
patent: 2203421 (1940-06-01), Stevenson et al.
patent: 2408629 (1946-10-01), Green
patent: 2517902 (1950-08-01), Luebkeman
patent: 3435107 (1969-03-01), Conrad
patent: 3780151 (1973-12-01), Heier
Randolph et al., Plastics Engineering Handbook, Reinhold, N.Y., (1960) pp. 0 and 11.

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