초록 ▼

In a process for the manufacture of a blade/vane of a turbomachine, the blade/vane is made of a metallic enveloping structure and a supporting structure made of composite material provided inside of the enveloping structure and suitably joined to the enveloping structure. A metal-felt weave is welde

In a process for the manufacture of a blade/vane of a turbomachine, the blade/vane is made of a metallic enveloping structure and a supporting structure made of composite material provided inside of the enveloping structure and suitably joined to the enveloping structure. A metal-felt weave is welded or soldered/brazed to the sheet making up the enveloping structure, whereupon this sheet-weave-assembly is shaped by hydroforming or an internal high-pressure forming process to provide the enveloping structure of the blade/vane. Finally, the composite material making up the supporting structure is introduced into the cavity of the enveloping structure.

대표청구항 ▼

1. A process for manufacturing a blade/vane of a turbomachine, the blade/vane comprising a metallic enveloping structure and a composite material supporting structure which is inside of and suitably joined to the enveloping structure, comprising: joining a metal-felt weave by at least one of weld

1. A process for manufacturing a blade/vane of a turbomachine, the blade/vane comprising a metallic enveloping structure and a composite material supporting structure which is inside of and suitably joined to the enveloping structure, comprising: joining a metal-felt weave by at least one of welding, soldering and brazing to a sheet of the enveloping structure, and shaping the resulting sheet-weave-assembly by at least one of hydroforming and internal high-pressure forming to provide a desired shape of the enveloping structure, and subsequently introducing the composite material for the supporting structure into a cavity of the enveloping structure. 2. The manufacturing process of claim 1, wherein, when a long-fiber reinforced composite material is used for the supporting structure, first placing a fiber structure into the enveloping structure and subsequently introducing the composite material by infiltration while the enveloping structure is positioned in a mold in which the sheet-weave-assembly shaping takes place. 3. The manufacturing process of claim 1, wherein, when one of a non-fiber reinforced and a short-fiber reinforced composite material is used for the supporting structure, introducing the composite material into the enveloping structure while the enveloping structure is positioned in a mold in which the sheet-weave-assembly shaping takes place. 4. The manufacturing process of claim 1, and further comprising manufacturing the enveloping structure of at least one of titanium sheet, nickel sheet, copper sheet, and austenitic steel sheet. 5. The manufacturing process of claim 2, and further comprising manufacturing the enveloping structure of at least one of titanium sheet, nickel sheet, copper sheet, and austenitic steel sheet. 6. The manufacturing process of claim 3, and further comprising manufacturing the enveloping structure of at least one of titanium sheet, nickel sheet, copper sheet, and austenitic steel sheet.