Integral forming technology for hollow multi-cavity special-shaped surface composite material complex structural member

The invention provides an integral forming technology for a hollow multi-cavity special-shaped surface composite material complex structural member. The technology includes the steps that low-melting-point alloy is subjected to low-pressure casting, and a fusibility mold core is obtained to serve as a mandrel; the prepreg or fabric is laid on the outer surface of the mandrel of the fusibility mold core to be made into a prefabricated part; and after the mandrel with the prefabricated part and an outer mold body of a workpiece mold are subjected to die assembly solidification, a composite material grating workpiece with the fusibility low-melting-point alloy mandrel is placed into a drying box, and accordingly a qualified composite material grating is obtained after fusion. The integral forming technology for the hollow multi-cavity special-shaped surface composite material complex structural member solves the integral forming problem of the hollow multi-cavity composite material complex structural member with