Patent US3901305A successfully refreshed from Google Patents.
US3901305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for continuous casting of metals
Assignee: Institute of Metal Science, Equipment and Technologies
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Filing: 1973-11-14
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Granted: 1975-08-26
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Expires: 1993-11-14
Abstract
Abstract A system for the continuous casting of a molten metal containing gas in solution wherein the molten metal is treated with gas under pressure in a first chamber containing the soluble gas together with an inert gas which may or may not dissolve in the melt, and is delivered to a second chamber and thereafter to a final chamber provided with the continuous-casting mold, the latter two chambers being maintained under super atmospheric pressure by the soluble gas.
Inventors
- 👤 Anguel Tonchev Balevski
- 👤 Ivan Dimov Nikolov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:27
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/10; B22D11/11; B22D11/116; B22D11/117; B22D1/00; B22D1/002; B22D1/005; C; C21; C21C; C21C7/00; C21C7/0081
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
113 words
An apparatus for the production of an elongated body, comprising: a treatment vessel adapted to receive a bath of molten metal; means forming a first chamber for treating the molten metal in said vessel with a gas mixture containing a soluble-gas as a component thereof at a low partial pressure; a continuous- casting mold provided with a further chamber for exposing solidifying molten metal therein to gas pressure; means connecting the chambers for transferring molten metal containing solubilized gas to said continuous casting mold; and means for subjecting the solidifying molten metal in said continuous casting mold to gas pressure in said other chamber of a higher partial pressure of said solubilizing gas.
Claim 2
Independent Claim
113 words
An apparatus for the production of an elongated body, comprising: a treatment vessel adapted to receive a bath of molten metal; means forming a first chamber for treating the molten metal in said vessel with a gas mixture containing a soluble-gas as a component thereof at a low partial pressure; a continuous- casting mold provided with a further chamber for exposing solidifying molten metal therein to gas pressure; means connecting the chambers for transferring molten metal containing solubilized gas to said continuous casting mold; and means for subjecting the solidifying molten metal in said continuous casting mold to gas pressure in said other chamber of a higher partial pressure of said solubilizing gas.
Claim 3
Dependent Claim
16 words
The apparatus defined in claim 1 wherein said means connecting said chambers include a direct-flow conduit.
Claim 4
Dependent Claim
66 words
The apparatus defined in claim 1 wherein said means connecting said chambers includes a second chamber interposed between said first chamber and said other chamber and forming an intermediate receptacle for storing the molten metal received from said vessel prior to discharging it to said continuous-casting mold, sAid second chamber being maintained under a gas atmosphere having a relatively high partial pressure of said soluble gas.
Claim 5
Dependent Claim
125 words
The apparatus defined in claim 3 wherein said means connecting said chambers further comprises a syphon tube reaching downwardly from said receptacle into said vessel below the surface of the melt therein and communicating with said receptacle below the surface of a melt contained therein, a check valve in said syphon tube, and a downwardly extending duct connecting said receptacle with said other chamber, said apparatus further comprising first means before establishing a pressure differential between said first and second chambers for displacing molten metal through said syphon tube from said vessel into said receptacle, and second means for establishing a pressure differential between said second chamber and said other chamber for controlling the flow of molten metal from said receptacle into said continuous-casting mold.
Claim 6
Dependent Claim
37 words
The apparatus defined in claim 4 wherein said second means includes a source of gas containing said soluble gas at high partial pressure and respective valves connecting said source with said second chamber and said other chamber.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |