摘要:
A method for semi-endless or endless rolling by casting a metal strand, especially a steel strand, which is cut to length as required after solidification, wherein the cut lengths of cast strand are fed into a roller hearth furnace for heating and homogenizing at rolling temperature and are then fed at rolling temperature into a rolling mill to be rolled out. The continuous casting is continued without interruption during the rolling operation, and a sufficient buffer time for a roll change is maintained in the rolling mill. For carrying out a roll change, the casting rate is reduced as a function of the feed rate of the rolling mill and/or the roll-changing time, and/or the buffer length of the roller hearth furnace, and/or the final rolled thickness after the strand has been cut to length.
摘要:
The invention relates to a method and casting roller plant for the semi-endless or endless rolling by casting of a metal, in particular a steel strip (1a), which may be transversely separated as required after solidification. The casting strip part lengths (20) are fed to a roller furnace (2) for heating and equilibration at the rolling temperature and the partial lengths (20) for rolling out are fed to a rolling train (3) for rolling, whereby the strip casting is continued uninterrupted during the rolling operation. According to the invention, a closer matching of the strip casting and the rolling can be carried out, whereby the casting speed (Vc) is reduced for a roller change such that between the end of rolling a preceding multiple length (21) and the insertion of a new partial length (20) or multiple lengths (21) into the rolling gear a sufficient buffer time for a roller exchange is provided.
摘要:
A device for continuously casting metals, especially steel, consists of multipleconsecutive segments (1) which each form the strand guide for casting strands of different widths (4), with roller pairs (2). The rollers are rotationally mounted on segment frames (5; 6), these segment frames (5; 6) each being braced with strand guide frames (10) on both sides. The aim of the invention is to reduce profile increases in the cross-section of the casting strand (4d) in the residual solidification area (4b), by providing a power mechanism (13) at least on the fixed side of the segment frame (5) of a segment (1), between the segment frame (5) and a transversal member (11) connecting the strand guide frames (10) on the two sides. Said power mechanism is situated approximately on the middle strand axis. The power transmission element (13a) of the power mechanism acts upon the segment frame (5), while its base (13b) is supported on the transversal member (11).
摘要:
A method for semi-endless or endless rolling by casting a metal strand, especially a steel strand, which is cut to length as required after solidification, wherein the cut lengths of cast strand are fed into a roller hearth furnace for heating and homogenizing at rolling temperature and are then fed at rolling temperature into a rolling mill to be rolled out. The continuous casting is continued without interruption during the rolling operation, and a sufficient buffer time for a roll change is maintained in the rolling mill. For carrying out a roll change, the casting rate is reduced as a function of the feed rate of the rolling mill and/or the roll-changing time, and/or the buffer length of the roller hearth furnace, and/or the final rolled thickness after the strand has been cut to length.
摘要:
The invention relates to a method and casting roller plant for the semi-endless or endless rolling by casting of a metal, in particular a steel strip (1a), which may be transversely separated as required after solidification. The casting strip part lengths (20) are fed to a roller furnace (2) for heating and equilibration at the rolling temperature and the partial lengths (20) for rolling out are fed to a rolling train (3) for rolling, whereby the strip casting is continued uninterrupted during the rolling operation. According to the invention, a closer matching of the strip casting and the rolling can be carried out, whereby the casting speed (Vc) is reduced for a roller change such that between the end of rolling a preceding multiple length (21) and the insertion of a new partial length (20) or multiple lengths (21) into the rolling gear a sufficient buffer time for a roller exchange is provided.
摘要:
A method and an apparatus for preventing undesirable intensive cooling particularly of the strip edge areas of a cast strand resulting from running water emerging from the bottom opening of a secondary cooling chamber, wherein high-energy spray jets of a deflection medium are produced and directed against the emerging running water transversely of the strip edge areas of the cast strand, such that the running water is deflected from the strip edge areas and is discharged through outlet openings of the secondary cooling chamber arranged on both sides of the cast strand.
摘要:
A casting machine for producing cast strands (2) in shape of billets or ingots includes a continuous casting mold (1) for forming a cast strand (2) that is deflected by a cast radius (R) from a vertical casting direction in horizontal casting direction (13), a straightening region (A) having straightening profiled roller pairs (4, 5, 6) with positive diametrical regions (h, b) or negative diametrical regions (−h, −b) for forming the cast strand with one or several projections (h, b) or recesses (−h, −b); and with at least one pair of straightening profiled rollers (4 to 6) provided on both sides of a tangent point (3) of the cast radius (R) and a soft-reduction region (B) adjoining the straightening region and having at least one roller pair (7, 8, 9) with thickness-reducing smooth rollers.
摘要:
A continuously cast strand is subjected to soft reduction between the guide rollers below the mold and between the soft reduction stretch and the mold the strand is subjected to format or thickness reduction between at least one pair of position controlled guide rollers so that independently of the quality of the steel, the casting speed and the spray cooling, the position of the type of the mold cavity and hence the molten steel therein is maintained constant along the soft reduction stretch.
摘要:
The invention relates to a method of producing cast strands (2) in shapes of billets or ingots wherein the strand (2) is guided between pairs of rollers (4 to n). In their straightening region (A), the strands (2) are formed, with the use of profiled rollers (4 to) with one-sided or multiple-sided projections (h, b) or recesses (−h, b). In the casting direction (10), downstream of the straightening region, the strands are subjected to a soft-reduction with at least one roller pair (7 to 9) with smooth rollers. The invention also relates to a casting machine provided with correspondingly formed rollers.
摘要:
A metal mold for continous casting of steel bands and including wide side walls and opposite narrow side walls extending parallel to each other between the wide side walls, and displaceable toward each other and away from each other for adjusting a distance therebetween, with the wide side walls each having a concave arcuate portion defining a pouring region, and inclined surfaces on opposite sides of the concave arcuate portion.