| US 7,543,628 B2 | ||
| Method for predicting and controlling the castability of liquid steel | ||
| Thomas Matschullat, Eckental (Germany); Hans-Jürgen Oeynhausen, Dormagen (Germany); Klaus Pronold, Düsseldorf (Germany); and Hans-Herbert Welker, Herzogenaurach (Germany) | ||
| Assigned to Siemens Aktiengesellschaft, Munich (Germany) | ||
| Appl. No. 10/569,781 PCT Filed Jul. 23, 2004, PCT No. PCT/EP2004/008300 § 371(c)(1), (2), (4) Date Feb. 24, 2006, PCT Pub. No. WO2005/021186, PCT Pub. Date Mar. 10, 2005. |
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| Claims priority of application No. 103 39 595 (DE), filed on Aug. 26, 2003. | ||
| Prior Publication US 2007/0000578 A1, Jan. 04, 2007 | ||
| Int. Cl. B22D 11/16 (2006.01) | ||
| U.S. Cl. 164—452 [164/451; 164/459] | 4 Claims |
| 1. A method for controlling the castability of liquid steel, the method comprising:
selecting each pair of alloying elements from the group consisting of Si/O2, S/O2, Al/O2, S/C, and N/C;
for the each pair of alloying elements from the group consisting of Si/O2, S/O2, Al/O2, S/C, and N/C, establishing a first range of relative concentration limits in a melt such that a subsequent casting of the
melt is likely to exhibit acceptable mechanical properties;
for the each pair of alloying elements from the group consisting of Si/O2, S/O2, Al/O2, S/C, and N/C, establishing a respective second range of relative concentration limits as a subset of the first range of
relative concentration limits such that a subsequent casting of the melt is further likely to be castable; and
casting a steel melt comprising the each pair of alloying elements from the group consisting of Si/O2, S/O2, Al/O2, S/C, and N/C having relative concentration limits within the second range of relative concentration limits for the each
pair of alloying elements.
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