Manufacturing method of regenerative cooling combustion chamber for rocket and regenerative cooling combustion chamber for rocket

摘要

PROBLEM TO BE SOLVED: To provide a process of manufacture of a regenerative cooling combustion chamber for rocket capable of manufacturing the regenerative cooling combustion chamber for rocket in a short time and at a low cost and to provide the regenerative cooling combustion chamber for rocket.SOLUTION: This invention comprises: a groove machining step of forming a groove 14a opened at an outer peripheral surface 11a in an inner cylinder 11 constituting a combustion chamber 1 provided with several flow passages 14 for flowing cooling fluid; a core charging step of charging heat melted wax W in the groove 14a; electroforming step of forming a plating layer 12 by applying electroforming to the outer peripheral surface 11a of the inner cylinder 11; an outer cylinder forming step of forming an outer cylinder 13 by applying laser powder padding process to a surface 12a of the plating layer 12, and serving as a flow passage forming step of melting wax W with laser heat and discharging it to form flow passages 14; and a heat treatment step of applying heat treatment against the inner cylinder 11, the plating layer 12 and the outer cylinder 13 to increase their strengths.SELECTED DRAWING: Figure 7