US3630266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous casting process
Assignee: Technicon Corp
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Filing: 1969-11-21
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Granted: 1971-12-28
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Expires: 1989-11-21
Abstract
Abstract In continuous casting wherein molten metal to be continuously cast flows from a casting nozzle into a cooled mold from which a billet with at least an outer shell solidified is withdrawn, a gas is injected under pressure about the casting nozzle into the mold to form a gas pocket about the casting nozzle in molten metal within the mold, the gas escaping between the forming billet and the mold.
Inventors
- 👤 Leonard Watts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:01
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/04; B22D11/045
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
97 words
A process for continuous horizontal casting comprising the steps of flowing molten material to a substantially horizontal refractory casting nozzle discharging into a substantially horizontal open-ended cooled mold having a sidewall structure which is laterally spaced from said nozzle, and introducing a gas around the distal end of the casting nozzle under such pressure that the gas displaces the meniscus of the molten metal to form a pocket in the molten material around the end of the nozzle, and prevents formation of a solId bridge between the solidified shell of the billet being cast and the nozzle.
Claim 2
Dependent Claim
97 words
A process for continuous horizontal casting comprising the steps of flowing molten material to a substantially horizontal refractory casting nozzle discharging into a substantially horizontal open-ended cooled mold having a sidewall structure which is laterally spaced from said nozzle, and introducing a gas around the distal end of the casting nozzle under such pressure that the gas displaces the meniscus of the molten metal to form a pocket in the molten material around the end of the nozzle, and prevents formation of a solId bridge between the solidified shell of the billet being cast and the nozzle.
Claim 3
Dependent Claim
15 words
The process according to claim 1, wherein the process is the continuous casting of steel.
Claim 4
Dependent Claim
17 words
The process according to claim 1, wherein the gas escapes between the forming billet and the mold.
Claim 5
Dependent Claim
44 words
The process according to claim 1, including the additional step of controlling the rate of flow of molten steel through the casting nozzle and the rate of formation of the billet by controlling the rate of withdrawal of the billet and from the mold.
Claim 6
Dependent Claim
17 words
The process according to claim 1, wherein a lubricant is introduced with the gas into the mold.
Claim 7
Dependent Claim
20 words
The process according to claim 1, wherein said gas is introduced at a pressure under 150 pounds per square inch.
Claim 8
Dependent Claim
45 words
The process according to claim 1, wherein a reservoir of molten metal is connected to said nozzle, and there is provided the additional step of regulating the pressure of the gas to form said pocket in proportion to the head of metal in the reservoir.
References Cited (Backward Citations)
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Cited
US2825104A
Cited
GB947626A
Cited
US3321008A
Cited
US3344846A
Cited
US3327768A
Cited
US3451465A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-27 | 1975-06-28 | 1975-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-27 | 1979-06-28 | 1979-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-27 | 1983-06-28 | 1983-12-28 | $7700.00 | Window Closed / Lapsed |