Cf/SiC cladding tube connecting piece and induction welding method and application thereof

The invention belongs to the technical field of composite material welding, and discloses a Cf/SiC cladding pipe connecting piece and an induction welding method and application thereof. The method comprises the following steps: spraying welding flux on the surface of a SiC end plug of a to-be-welded part; after alcohol on the surface of the SiC end plug is completely evaporated, the SiC end plug and the Cf/SiC cladding tube are embedded, the welding portion of the Cf/SiC cladding tube is wrapped with graphite carbon felt, and a prefabricated connecting piece is formed; the prefabricated connecting piece is placed in an induction coil with the number of turns being 5-50 and the frequency being 10-20 kHz, in the protective atmosphere Ar or 10 -10 Pa vacuum, alternating current is introduced into the induction coil, the current is controlled, the temperature of the cladding tube is increased to 1400-1600 DEG C, sintering is conducted, and the Cf/SiC cladding tube connecting piece is obtained. Accordi