Molten metal sampler for electroslag refining process
US3974698A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1975 |
| Grant date | Aug 17, 1976 |
| Priority date | — |
| Expiry date | Jan 24, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S73/09
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A molten metal vacuum-type sampler for taking samples of molten metal from the mold used in an electroslag refining process while opposite voltages are applied across the electrode and the mold, the sampler being a box-shaped hollow body with a silica tube extending downwardly therefrom to be inserted through the slag cover into the molten metal for a few seconds to draw a metal sample into the hollow space of the sampler. The sampler has two insulation boards on opposite sides overlapping the sides to prevent an electrically conductive contact of the sampler with the nearby surfaces of the mold and the electrode. An insulated pipe attached to the top of the sampler forms a handle in its upper aspect and connects conduits and a valve optionally to an argon gas source or a vacuum reservoir. Argon is discharged into the supporting pipe, through the sampler and the silica tube when the tube is inserted in the slag and into the molten metal at which time the vacuum reservoir is placed in communication with the sampler vice the argon source for a predetermined short period (about 5 seconds) and metal is drawn through the silica tube into the sampler, the amount of metal being predetermi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.