Method for manufacturing hollow ingot for retaining ring of large generator by electroslag remelting
US9393613B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2014 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Feb 17, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B9/18
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for manufacturing hollow ingot for retaining ring of large generator by electroslag remelting, comprising the following steps: (1) preparing consumable electrode assemblies; (2) melting slag into molten slag; (3) inserting one consumable electrode assembly into an electroslag remelting hollow ingot mold; (4) switching on two transformers; (5) pouring the molten slag into the electroslag remelting hollow ingot mold; (6) forming a current circuit among a stub, the consumable electrode assembly and a water-cooled bottom plate; (7) forming a current circuit among the upper segment, the water-cooled bottom plate and the transformer; (8) regulating the output current and voltage of the two transformers; (9) starting a withdrawing device to withdraw; (10) exchanging the consumable electrode assembly; (11) inserting a subsequent consumable electrode assembly into the molten slag, and repeating steps (8) to (10) until withdrawing is completed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.