METHOD OF TURBO MACHINE INTEGRAL WHEEL Russian patent published in 2014 - IPC B23K31/02 B23K11/04 

FIELD: machine building.

SUBSTANCE: method comprises prefabrication of blades and disc and welding of all blades to disc. Note here that gasket is arranged between the ends of said blades and disc ledges and made from material that features liquidus temperature $$T_{\text{l gasket}}^0\ge T_{\text{l part max}}^0+{100}^{\circ }C$$ , where $$T_{\text{l part max}}^0$$ is liquidus temperature of materials of both blades and disc and that produces solid solutions after welding. First, current is passed through welded blade and disc and, at a time, the disc is upset to said blade at force F_upset≤0.1σ_0.2maxS_face, where σ_0.2max is conditional yield point of blade and disc material, S_face is area of welded end faces. $$T_{face}^0=\mathrm{0,6}{T}_{\text{l part max}}^0$$ temperature reached, current is passed solely through said gasket to gasket material liquidus temperature. Thereafter, disc is finally upset. After welding, blades are subjected to appropriate machining.

EFFECT: simplified fabrication, reliable high-strength weld joint, minor welding influence on part structure.

2 dwg