US4014379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming ingot in process of continuous and semi-continuous casting of metals
Assignee: Individual
•
Filing: 1972-07-03
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Granted: 1977-03-29
•
Expires: 1992-07-03
Abstract
Abstract A method of forming an ingot in the process of continuous and semi-continuous casting of metals consisting in that the molten metal is actuated by an electromagnetic field of an inductor, in which case the current flowing through the inductor is controlled depending on the deviations of the dimensions of the liquid zone of the ingot from a prescribed value, and thereafter, the molten metal is cooled down.
Inventors
- 👤 Zinovy Naumovich Getselev
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:51
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/01; B22D11/015
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
134 words
A method of forming an ingot in the process of continuous and semi-continous casting of metals, which method comprises the steps of shaping the molten metal by an electromagnetic field of an inductor; adjusting the current flowing through the inductor depending on the deviations of the height of the liquid zone of the ingot from a prescribed level to maintain the prescribed transverse dimensions of the liquid zone wherein the level of said liquid zone of the ingot is measured, and the obtained magnitude is converted into an electrical signal which acts to adjust the current flowing through the inductor in the direction providing for the maintenance of the prescribed transverse dimensions of the liquid zone of the ingot; and thereafter cooling the molten metal until the molten metal is at least partially solidified.
Claim 2
Independent Claim
134 words
A method of forming an ingot in the process of continuous and semi-continous casting of metals, which method comprises the steps of shaping the molten metal by an electromagnetic field of an inductor; adjusting the current flowing through the inductor depending on the deviations of the height of the liquid zone of the ingot from a prescribed level to maintain the prescribed transverse dimensions of the liquid zone wherein the level of said liquid zone of the ingot is measured, and the obtained magnitude is converted into an electrical signal which acts to adjust the current flowing through the inductor in the direction providing for the maintenance of the prescribed transverse dimensions of the liquid zone of the ingot; and thereafter cooling the molten metal until the molten metal is at least partially solidified.
Claim 3
Dependent Claim
32 words
The method as defined in claim 1, in which the adjustment of the current flowing through the inductor is effected by a direct negative voltage feedback signal taken directly from said inductor.
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) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |