LONG PRODUCTS BULLETIN - SMS Meer GmbH

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44 Newsletter No. 2/2009 Long-product mills SBQ round bars produced in the range from 25 to 127 mm Timken, USA: PSM ® and bar finishing section put into operation Commissioning Control desk ahead of the PSM ® block with E+A supplied by SMS Meer. In September 2008, the Timken Company in Canton, Ohio, USA, has commissioned new facilities jointly with SMS Meer to extend its existing Harrison Steel bar mill. “The facility will reach full capacity in August 2009,“ says Tom Moline, Steel Manufacturing Vice-President of Timken. The expansion increases the mill capacity, extends the product size range and improves product quality for the production of SBQ round bars in the range from 25 to 127 mm. Shortly after commissioning, tolerances of ½ ASTM were already being achieved reflecting the high performance ability of the mill and documenting the precision of the hydraulic roll adjustment systems. Operation in full swing on the PSM ® block. One-Family rolling and free-size rolling The scope of supply from SMS Meer includes a 3-roll precision sizing mill (PSM ® ) as well as a bar finishing section with cooling bed, cut-off and loading facilities. The PSM ® is arranged downstream of the existing rolling mill and allows both a standardized groove to be employed in the roughing and intermediate trains (one-family rolling) and the infinitely variable production of finished sizes by means of roll adjustment (free-size rolling).
Automatic gage control and monitor control The precision sizing mill consists of five roll cassettes, each with three rolls which can even be hydraulically adjusted under load. This also permits automatic gage control (AGC) as well as monitor control in connection with a laser measuring unit for product size measurement installed downline of the PSM ® . A CARTA ® process model serves for setting of the process parameters. SMS Meer also supplied the complete electrical equipment and realized the automation in cooperation with Timken. Cooling bed for 78-m-long bars. The first rolled bars on the cooling bed. Newsletter No. 2/2009 45
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LONG PRODUCTS BULLETIN - SMS Meer GmbH

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