Method of making large structural one-piece parts of metal, particularly one-piece shafts
US3985995A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 1974 |
| Grant date | Oct 12, 1976 |
| Priority date | — |
| Expiry date | Apr 16, 1994 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2220/24
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Very large diameter metal shafts for turbines and electric generators, and other large structural metal parts, can be made in one piece to a high quality without occlusions, cavities, segregations, and cracks by building the part up layer by layer, each layer being formed by deposition of molten metal by welding along neighbouring tracks which together cover the area over which the layer is to be deposited. The weld deposition of the metal may be effected by a welding head which is moved longitudinally along the part, and if the part is simultaneously rotated the metal is deposited along a helical path in forming a layer. A plurality of welding heads may be used so that metal is deposited simultaneously at different positions during the construction of each layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.