摘要:
A twin-belt casting machine for casting metal strip. The machine is provided with a casting cavity which includes an upstream fixed casting region, in which the belts are in fixed convergent paths in contact with the cast slab, and an adjacent downstream portion in which the belts are adjustable between alignment with the fixed convergent paths and non-alignment therewith (being less convergent or divergent). When the adjustable portions of the paths are moved outwardly relative to the fixed convergent paths, the belts separate from the cast slab at differing predetermined points within the casting cavity. By adjusting the downstream portion of the casting cavity in this manner, the casting machine can operate at essentially constant throughput for a wide range of alloys while ensuring that the cast slab exiting the caster has a temperature within a predetermined range suitable for further rolling to produce sheet product.
摘要:
The invention relates to a method for prolonging the serviceable life of the broad side walls of a mold, which is formed from broad side walls and narrow side walls, in a continuous casting installation for continuously casting a metal casting. In order to significantly prolong the serviceable life of a mold, in particular, for casting long sequences with the same casting width, the invention provides that a casting center axis (11, 110, 111, 112) is defined in the middle between the narrow side walls, and this casting center axis, during casting, is shifted continuously or discontinuously parallel to itself.
摘要:
The invention relates to a method for prolonging the serviceable life of the broad side walls of a mold, which is formed from broad side walls and narrow side walls, in a continuous casting installation for continuously casting a metal casting. In order to significantly prolong the serviceable life of a mold, in particular, for casting long sequences with the same casting width, the invention provides that a casting center axis (11, 110, 111, 112) is defined in the middle between the narrow side walls, and this casting center axis, during casting, is shifted continuously or discontinuously parallel to itself.
摘要:
Bei einem Verfahren zum Stranggießen von Metallen, insbesondere von Stahl, in einer Stranggießkokille 1, unter Vermeidung von unzulässigen Gießspiegelschwankungen, können ausreichend genaue Werte für zulässige Gießspiegelschwankungen dahingehend ermittelt und verwertet werden, indem eine Frequenzanalyse der Gießspiegelschwankungen durchgeführt wird, wobei das Gießspiegelsignal 11 auf die Frequenzebene 12 transformiert wird und aufgrund der Analysen-Ergebnisse die Gieß- und / oder Betriebsparameter angepasst werden.
摘要:
A width changing method in which the width of a slab under casting is changed by a movement of narrow face of a continuous casting mold by the operation of a horizontal driving device and a rotary driving device operable independently of the horizontal driving device. The period of width changing operation is divided into a forward taper changing period in which each narrow face is inclined toward the center of the mold and a rearward taper changing period in which each mold and a rearward taper changing period in which each mold wall is inclined away from the center of the mold. The acceleration of the horizontal movement of each narrow face is determined by means of allowable shell deformation resistance as a parameter for each period. Also is determined the angular velocity of the rotary device or the difference in velocity between the upper and lower ends of the narrow face. The width changing operation is conducted while maintaining the acceleration and the angular velocity or the velocity difference at constant levels in respective periods.
摘要:
Zur Erreichung einer kurzen Verstellzeit bei kleinem Durchbruchrisiko soll beim Verändern der Abmessungen eines Stranges beim Stranggiessen während eines laufenden Gusses mindestens während eines Zeitabschnittes (0-1 bzw. 2-3) der Verschwenkbewegung der Kokillenwand das gegenseitige Verhältnis der Verschiebegeschwindigkeiten (21, 22 bzw. 23,24) von zwei Einrichtungen zum Bewegen der Kokillenwand verändert und die Lage der Verschwenkachse der Kokillenwand parallel zu ihrer Ausgangslage verschoben werden.