US4306610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling continuous casting rate
Assignee: Korf Technologies Inc
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Filing: 1979-10-03
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Granted: 1981-12-22
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Expires: 1999-10-03
Abstract
Abstract A method for controlling the casting rate in the continuous casting of liquid metals by monitoring the casting temperature downstream from the continuous casting mold and opening or closing the bottom-pour nozzles on the hot metal vessels when the casting temperature at such point deviates from a preselected temperature range. The method includes switching of the control strand in multiple strand casters whenever the control strand has some difficulty.
Inventors
- 👤 Aziz Ahmed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:15
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/16; B22D11/20; B22D11/201
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
185 words
A method for controlling the casting rate of molten metal from a bottom-pour vessel into an open-ended continuous casting mold beneath and spaced from said bottom-pour vessel and from the bottom of which mold a casting is withdrawn and cooled by water sprays, said bottom-pour vessel having a nozzle in its bottom wall and a flow control means for controlling the flow rate of molten metal through said nozzle, said method comprising: (a) continuously measuring only the surface temperature of the casting at a preselected location remote from and downstream from said mold and downstream from said water sprays: (b) comparing the temperature measurement to a predetermined temperature range; (c) generating a signal when said temperature measurement deviates from said predetermined temperature range, said signal being indicative of the deviation from said temperature range; and (d) said signal generating only an adjustment to said flow control means to maintain metal flow into said mold at such a rate that solidification of the casting proceeds at a sufficient rate to maintain the downstream temperature of the casting at said preselected location within said preselected temperature range.
Claim 2
Independent Claim
185 words
A method for controlling the casting rate of molten metal from a bottom-pour vessel into an open-ended continuous casting mold beneath and spaced from said bottom-pour vessel and from the bottom of which mold a casting is withdrawn and cooled by water sprays, said bottom-pour vessel having a nozzle in its bottom wall and a flow control means for controlling the flow rate of molten metal through said nozzle, said method comprising: (a) continuously measuring only the surface temperature of the casting at a preselected location remote from and downstream from said mold and downstream from said water sprays: (b) comparing the temperature measurement to a predetermined temperature range; (c) generating a signal when said temperature measurement deviates from said predetermined temperature range, said signal being indicative of the deviation from said temperature range; and (d) said signal generating only an adjustment to said flow control means to maintain metal flow into said mold at such a rate that solidification of the casting proceeds at a sufficient rate to maintain the downstream temperature of the casting at said preselected location within said preselected temperature range.
Claim 3
Dependent Claim
26 words
A method according to claim 1 wherein said metal is first poured from said bottom-pour vessel into an intermediate pouring vessel and thence into said mold.
References Cited (Backward Citations)
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US3537505A
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US3817311A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-12-21 | 1985-06-22 | 1985-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-12-21 | 1989-06-22 | 1989-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-12-21 | 1993-06-22 | 1993-12-22 | $7700.00 | Window Closed / Lapsed |