PROCESS FOR MANUFACTURING A PIECE HAVING A RELATIVELY BIG SIZE, IN PARTICULAR FOR MANUFACTURING A BLADE FOR A TURBINE ENGINE
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Nov 6, 2015
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Nov 7, 2014
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According to a process for manufacturing a piece having a relatively big size, in particular a blade for a turbine engine, at least two sectors are manufactured separately from each another, so that each of them comprises: a portion having substantially the same shape and size of a corresponding portion of the piece to be made, at least one coupling surface which is complementary to a corresponding coupling surface of the other sector, and a continuous outer flange at each of said coupling surfaces; the sectors are rested against each other at the coupling surfaces and are then fastened to each other by means of an electron beam welding, carried out under vacuum, so as to weld the outer flanges along the entire outer perimeter of the coupling surfaces, and by means of a subsequent hot isostatic compression; after the fastening, the flanges are removed by means of a material removal machining.
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