IMPACT TURNING OF AXUM TURBOMACHINE COMPRESSOR BLUM BLADE END ENDS

摘要

The invention relates to a method for a single-piece bladed rotor (12), known as a “BLUM®”, for a low-pressure compressor of an axial turbomachine. The method comprises the following steps: (a) forging a rough circular rotor support (12) receiving each row (22) of vanes (24); (b) machining the raw support so as to radially thin it to form a circular wall receiving several rows (22) of blades (24); (c) machining blade stubs (24); (d) welding blade blades (24) to the stumps; (e) machining the radial ends of the vanes (24) by impact turning. The machining creates rough, concentric blade heads, which improves sealing. The invention further provides a rotor (12), the blades (24) of which have tooth tops arranged on a helical or helical.