METHOD FOR MANUFACTURING AN ANNULAR CRANKCASE FOR AN AIRCRAFT TURBOMACHINE

Abstract

The present invention relates to a method for manufacturing a turbomachine casing comprising a skin (40) and tubular chimneys (42), the method comprising the following steps: (a) making the skin (40) out of composite material, (b) making the chimneys (42) out of composite material, (c) fixing the chimneys to the skin, this step (c) comprising, for each chimney: (c2) welding a support (420) onto the skin by an energy source (6), and (c5) welding a sleeve (426) onto the support and / or the skin by the energy source, wherein first (422) and second (424) susceptors are located between the support and the skin, and between the sleeve and the support and / or the skin, and wherein the energy source is a magnetic field generation element configured to heat by induction the first and second susceptors during substeps (c2) and (c5). Figure for the abridged version: Fig. 9