Method of forming a reinforcing layer on the inner wall of the c

Details Method of forming a reinforcing layer on the inner wall of the c Method of forming a reinforcing layer on the inner wall of the c

1975-02-10

1977-06-07

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

204 15, 204 26, C25D 102, C25D 516

Patent

active

040281981

ABSTRACT:
In forming the inner wall for the combustion chamber and/or thrust nozzles of an liquid rocket engine which is shaped with inwardly directed projections to form cooling ducts closed outwardly by the outer wall, a reinforcing layer is electroplated at least on the radially inner surfaces of the inwardly directed projections. The inner wall is rotatably supported within an electrolyte bath with the material-depositing electrode located on the central axis of the inner wall and only the surface to receive the reinforcing layer is located below the surface of the bath. The reinforcing layer is provided only over a part of the axially extending length of the inner wall and a tapering transition section is provided from the radially inner surface of the reinforcing layer to the inner surface of the inner wall by gradually lifting or lowering the inner wall within the electrolyte bath during the electroplating operation.

REFERENCES:
patent: 742131 (1903-10-01), Pratt
patent: 1733404 (1929-10-01), Fahrenwald
patent: 2138938 (1938-12-01), Plensler
patent: 2943030 (1960-06-01), Tchejeyan
patent: 3692637 (1972-09-01), Dederra et al.
patent: 3738916 (1973-06-01), Butter et al.

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