Production of Thin Gauge Strip Rolling in CSP
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Analyzed some problems occurred in the production of thin gauge strip rolling.After optimizing the technology parameters and the control systems which played a very important part in thin gauge rolling,CSP of Masteel can make it more stable during thin gauge rolling.Cite
Rolling mill
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Limiting
Rolling mill
Rolling resistance
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This paper describes high speed rolling and gauge control in cold tandem mill for ultra-thin gauge strip at the Chiba Works of Kawasaki Steel Corporation. To improve the plate-out property of rolling oil, cationic polymeric coagulant was prepared. Rolling oil with cohesion independent of inorganic inclusions or phosphatide was developed, to improve the lubrication for cold rolling, remarkably. In addition, a low-cost Ti-enhanced work roll having high wear resistance and excellent grindability was developed. Rolling can be conducted at the optimal rolling roughness and operation can be performed at the highest rolling speed independent of the rolling treatment amount. Rolling speed at 2800 m/min was confirmed by developing the rolling oil with excellent lubrication and the work roll having high wear resistance. For the improvement of strip thickness accuracy at the steady state rolling, use of the backup roll as roller bearing was more effective rather than the improvement of response of mill motor. Gauge accuracy within {plus_minus}1.0% was achieved. 8 refs., 16 figs., 1 tab.
Rolling mill
Rolling resistance
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The paper describes measurements of lateral flow of material which took place during cold rolling thin strip. This sideways flow is shown to have a considerable influence of the final flatness of the strip. A mathematical model of a rolling mill stand is described, which includes a calculation allowing for sideways flow of material. Parameter studies are made using the mathematical model, which show the influence of crowns, tensions, back-up and work roll bending on the resultant strip shape. A comparison is made between results predicted by the model and test results obtained on a production mill.
Flatness (cosmology)
Rolling mill
STRIPS
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