US3926244A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling the cooling rate of narrow side walls of plate molds as a function of the casting taper during continuous casting
Assignee: SMS Concast AG
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Filing: 1974-03-25
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Granted: 1975-12-16
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Expires: 1994-03-25
Abstract
Abstract A method of controlling the cooling rate of narrow side walls of plate molds during continuous casting, wherein the narrow side walls are fixedly clamped between the wide side walls, prior to start of the casting the hollow casting compartment between the narrow side walls is provided with a casting taper which converges in the direction of travel of the cast strand or casting and which is accommodated to the quality of the steel and the width of the strand. Prior to the start of the casting operation the casting taper is additionally adjusted to a reference value which corresponds to the contemplated casting speed and/or casting temperature, and upon deviation of the casting speed and/or casting temperature during the casting operation the casting taper is changed in accordance with reference values corresponding to such fluctuating or changing casting parameters.
Inventors
- 👤 Walter Meier
- 👤 Josef Zeller
- 👤 Peter J Koenig
- 👤 Werner Bruderer
- 👤 Markus Schmid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:26
CPC Classifications
B; B22; B22D; B22D11/00; B22D11/16; B22D11/168; B22D11/22
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
158 words
A method of controlling the cooling rate of the narrow side walls of a plate mold during continuous casting, said plate mold further possessing wide side walls, wherein the narrow side walls of the mold are fixedly clamped between the wide side walls of the mold, prior to the start of the casting operation the hollow mold compartment is provided between the narrow side walls with a casting taper which converges in the direction of travel of the cast strand and which is accommodated to the quality of the steel and the width of the strand, the improvement comprising the steps of prior to starting the casting operation additionally adjusting the casting taper to a reference value corresponding to at least one prescribed casting parameter, and upon deviation of the casting parameter during the casting operation altering the casting taper according to predetermined reference values which produce a desired cooling effect and corresponding to such changing casting parameter.
Claim 2
Independent Claim
158 words
A method of controlling the cooling rate of the narrow side walls of a plate mold during continuous casting, said plate mold further possessing wide side walls, wherein the narrow side walls of the mold are fixedly clamped between the wide side walls of the mold, prior to the start of the casting operation the hollow mold compartment is provided between the narrow side walls with a casting taper which converges in the direction of travel of the cast strand and which is accommodated to the quality of the steel and the width of the strand, the improvement comprising the steps of prior to starting the casting operation additionally adjusting the casting taper to a reference value corresponding to at least one prescribed casting parameter, and upon deviation of the casting parameter during the casting operation altering the casting taper according to predetermined reference values which produce a desired cooling effect and corresponding to such changing casting parameter.
Claim 3
Dependent Claim
21 words
The method as defined in claim 1, including the step of using as the casting parameter at least the casting speed.
Claim 4
Dependent Claim
21 words
The method as defined in claim 1, including the step of using as the casting parameter at least the casting temperature.
Claim 5
Dependent Claim
24 words
The method as defined in claim 1, including the step of using as the casting parameter both the casting speed and the casting temperature.
Claim 6
Dependent Claim
74 words
The method as defined in claim 1, including the step of continuously measuring the cooling rate of the narrow side walls of the mold to obtain measurement values, comparing such measurement values with a reference cooling rate value corresponding to an actual casting parameter, and upon the presence of a deviation between the reference cooling rate value and the actual cooling rate value altering the casting taper until reaching the reference cooling rate value.
Claim 7
Dependent Claim
19 words
The method as defined in claim 5, wherein said actual casting parameter constitutes at least the actual casting speed.
Claim 8
Dependent Claim
19 words
The method as defined in claim 5, wherein said actual casting parameter constitutes at least the actual casting temperature.
Claim 9
Dependent Claim
25 words
The method as defined in claim 5, wherein said actual casting parameter constitutes at least both the actual casting speed and the actual casting temperature.
Claim 10
Dependent Claim
91 words
The method as defined in claim 1, including the step of continuously measuring the specific cooling rate of the narrow and wide side walls of the mold to obtain measurement values, comparing such measurement values regarding the narrow and wide side walls of the mold, discriminating the specific actual cooling rate ratio between such walls from a predetermined specific reference cooling rate ratio, and upon deviation between the specific reference cooling rate ratio and the actual cooling rate ratio altering the casting taper until reaching the specific reference cooling rate ratio.
Claim 11
Dependent Claim
78 words
The method as defined in claim 1, including the step of continuously measuring the cooliNg rate of the narrow side walls of the mold, upon change of the casting taper differentiating the deviation of the cooling rate after the deviation of the casting taper and determining a reference taper which is associated with a reference cooling rate value from the characteristics of a function curve, wherein the cooling rate is plotted as a function of the casting taper.
Claim 12
Dependent Claim
35 words
The method as defined in claim 10, including the step of selecting the reference cooling rate value and the reference taper at a transition region between an ascending and horizontal branch of said function curve.
Claim 13
Dependent Claim
40 words
The method as defined in claim 1, including the step of maintaining the size of the hollow mold compartment at the outlet end of the mold between the narrow side walls of the mold during accommodation of the casting taper.
Claim 14
Dependent Claim
70 words
The method as defined in claim 1, including the step of reducing the force required for fixedly clamping the narrow side walls of the mold during the adjustment of the casting taper to about twice the value of a counterforce which is effective owing to the ferrostatic pressure of the cast steel, and after such adjustment again increasing such clamping force to the value which prevailed prior to the adjustment.
Claim 15
Dependent Claim
42 words
The method as defined in claim 1, wherein said predetermined reference values which produce a desired cooling effect comprise selectively at least one of the following values: the casting taper in percent per meter or a specific cooling rate of the strand.
Claim 16
Dependent Claim
34 words
The method as defined in claim 1, wherein said predetermined reference values which produce a desired cooling effect comprise the casting taper in percent per meter and a specific cooling rate of the strand.
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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) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |