Laser welding forming method for sectional type composite material shell of solid rocket engine

The invention discloses a laser welding forming method for a sectional type composite material shell of a solid rocket engine. The laser welding forming method comprises the following steps that (1),a core mold is prepared; (2), a heat insulation layer is manufactured; (3), sectional prefabricated parts are manufactured; (4), surface treatment is carried out on the prefabricated parts; (5), laserwelding assembly is carried out on the sectional prefabricated parts; and (6), the outer layer of the shell is reinforced. According to the laser welding forming method for the sectional type composite material shell of the solid rocket engine, a laser welding forming process is designed according to various loads of an engine shell and sectional connecting parts, so that inner composite layer connection and integral forming of the engine shell are achieved for shell front and rear head plate prefabricated parts and shell barrel segment prefabricated parts correspondingly through laser welding and outer layer winding