Sms Demag Ag

Sms Siemag Aktiengesellschaft

Sms Demag, Inc.

Sms Group Gmbh

Herbert Brotzki

Thomas Fest

Adolf Gustav Zajber

Dirk Letzel

Lothar Fischer

Martin Becker

Wilfried Milewski

Heinz-Dietrich Schneider

A method for cooling a roller device, which has a right bearing housing, a left bearing housing, and a roller, which is rotatably supported by journals in the bearing housings, especially of strand guide rolls, roller table rollers, pinch rolls, support rolls, or driving rolls in continuous casting plants, in which a cooling medium cools the bearings mounted in the bearing housings and passes through an axial bore in the roller. The cooling medium enters the bearing housing of the roller device on one side, passes around the bearing mounted in this bearing housing, then flows through the axial bore in the roller to the other side, passes around the bearing mounted in the other bearing housing, and is then discharged from the roller device.

Cooling of rolls in continuous casting plants

A roller device, which includes a right bearing housing, a left bearing housing and a roller, which is rotatably supported by journals in the bearing housings in continuous casting plants. A cooling medium is passed through an axial bore in the roller, and bores, which form a closed cavity, are arranged around the bearings mounted in each of the bearing housings. A cooling medium inlet is provided in a first of the bearing housings, and a discharge bore for the cooling medium, which is arranged on the end face of a second of the bearing housings, is located next to the bearing cover so that the cooling medium flows into the inlet in the first bearing housing, through the axial bore in the roller and out the discharge bore in the second bearing housing.

A method and strand guide for supporting, guiding and cooling casting strands () made of steel, especially preliminary sections () for girders, which are cooled by injected water () and are drawn, serve to prevent cracks, especially surface cracks, from appearing in the microstructure by adapting the cooling conditions of the surface of the strand in the region of the secondary cooling, and serve to prevent undercooling of the strand shell, wherein in order to avoid an undesirable solidification structure on the upper flange edges or in other cross-sectional areas, the cooling and support of the beam blank format are so adapted to the solidification range that cooling and support are provided exclusively where a crater is formed. To this end, the casting strand () is cooled, by guiding the temperature in a specific manner in upper supporting segments (), by means of spray-water jets the width of which at least matches the length of the supporting rollers on longitudinal and transversal sides () of the cross section () of the casting strand, and is decreasingly supported in an analogous manner with respect to the length of the casting path and the cooling state in core areas () of the cross section () of the casting strand on the transversal sides () of said casting strand cross-section () so that cooling occurs exclusively by means of water jets () which are oriented towards said core areas ().

Method and strand guide for supporting, guiding and cooling casting strands made of steel, especially preliminary sections for girders

A device for the continuous casting of metals, especially steel material, to elongated products in a multistrand casting apparatus with a plurality of continuous casting molds which are oscillatingly driven in an oscillating frame () by means of leaf springs () whereby the leaf springs () extend transversely to the casting direction () and serve for guide and weight compensation. The smallest possible strand spacing 'A' is provided for that on a longitudinal foundation frame () to housings () in the form of compact flat cassettes () are secured one behind the other in the strand travel direction. In the housings upper and lower leaf spring pairs () run transversely to the cast strands () and the oscillating strands () engage the leaf spring pairs (), whereby a front oscillating drive () works synchronously with the rear oscillating drive ().

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Duisburg, Germany

Herbert Brotzki