US3589429A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for continuous casting, cooling and shaping of metal bars
Assignee: Voestalpine AG
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Filing: 1968-12-10
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Granted: 1971-06-29
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Expires: 1988-12-10
Abstract
Abstract Cooling a continuously cast bar in a cooling zone arranged after the mold, in which cooling zone the surface temperature of the bar is kept substantially equal, terminating the cooling procedure prior to complete solidification of the bar, and leading the bar which still retains a liquid core into an equalization zone, where due to heat emission from the liquid core the surface temperature of the bar is brought to rise to a temperature which is higher than that prevailing in the marginal zone upon entrance of the bar into the equalization zone.
Inventors
- 👤 Rudolf Schoffmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:27
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/12; B22D11/128; B22D11/1282
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
165 words
A method of continuously casting a metal bar for subsequent shaping thereof, comprising the steps of, casting molten metal in a cooled mold to form the continuous cast bar, subjecting said bar upon emergence from said mold to the action of a cooling medium controlled to effect a decrease in surface temperature of said bar of not more than about 200* C. and solidification through from about 85 percent to 95 percent of the crosssectional area of the bar, and while still retaining the said surface temperature and solidification characteristics imparted by the action of said controlled cooling medium, passing said bar through an uncooled zone to enable heat emission from the unsolidified core of said bar to heat the surface of said bar to a temperature higher than that prevailing upon its entry into said uncooled zone, whereby the temperature gradient over the cross-sectional area of said bar is reduced and subjecting said bar to shaping operations immediately upon emergence from said uncooled zone.
Claim 2
Independent Claim
165 words
A method of continuously casting a metal bar for subsequent shaping thereof, comprising the steps of, casting molten metal in a cooled mold to form the continuous cast bar, subjecting said bar upon emergence from said mold to the action of a cooling medium controlled to effect a decrease in surface temperature of said bar of not more than about 200* C. and solidification through from about 85 percent to 95 percent of the crosssectional area of the bar, and while still retaining the said surface temperature and solidification characteristics imparted by the action of said controlled cooling medium, passing said bar through an uncooled zone to enable heat emission from the unsolidified core of said bar to heat the surface of said bar to a temperature higher than that prevailing upon its entry into said uncooled zone, whereby the temperature gradient over the cross-sectional area of said bar is reduced and subjecting said bar to shaping operations immediately upon emergence from said uncooled zone.
Claim 3
Dependent Claim
31 words
The method set forth in claim 1 wherein additional heat is applied to said bar as it traverses said uncooled zone by means selected from burners, induction means and resistance heating.
References Cited (Backward Citations)
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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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |