Results 211 to 220 of about 102,293 (268)
Orientational bistability and field-controlled switching of a superparamagnetic dimer.
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Damage in hot rolling work rolls
Wear, 1999Samples from a couple of work rolls employed in a hot rolling steel strip mill were examined by scanning electron microscopy in order to study their surface, as well as the wear mechanisms responsible for their damage. It was found that a series of cracks develop within the rolls at the beginning of their operational cycle, these cracks follow the ...
Rafael Colás +4 more
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Modelling oxidation of hot rolling work rolls
Ironmaking & Steelmaking, 2001A mathematical model was developed to compute the growth of the oxide layer found on the surface of hot rolling work rolls. The model considers that the rolls are installed in a continuous hot strip mill, and that their surface is subjected to the thermal cycling that results from contact with the steel being rolled and from the water delivered from ...
V. González +3 more
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MODELLING WORK-ROLL TEMPERATURE VARIATIONS IN HOT STRIP ROLLING
International Journal of Modelling and Simulation, 2004AbstractPrediction of temperature distribution within work-rolls during the hot strip rolling process is of great importance to mill designers because of the significant role it plays in the product's dimensional accuracy and roll life. The present article employs the unsteady state heat transfer equation with time-dependent boundary conditions, as ...
S. Serajzadeh, A. Karimi Taheri
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A design of a SmartCrown work roll profile
Proceedings of 2011 International Conference on Electronic & Mechanical Engineering and Information Technology, 2011SmartCrown system is an effective method for controlling the flatness and profile of strip. The key issue in the SmartCrown system is the design of the roll profile. In this paper, a design method of SmartCrown roll profile is obtained The crown ratio is considered as the criteria of design firstly to control higher-order buckle.
Zi-ping Liu +2 more
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A Study on Corrosion Wear of Cold Rolling Work Roll
Advanced Materials Research, 2013The MMS-2B wear machine was used to study abrasion wear of work rolls in cold rolling by simulating emulsion cooling during the cold rolling process. The work roll materials used were 4%Cr, same as those in industrial production. The surface SEM scanning photographs were taken every 30 minutes until the friction experiment finished, and erosive ...
Sun, Weihua, Li, Hongchun, Tieu, A K
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An Investigation of the Effect of Speeds of Work Rolls on Rolling Strip
Journal of Engineering Materials and Technology, 1995The paper is an investigation of strip curvature caused by the different speeds between the upper work roll and the lower work roll in the rolling process for an aluminum strip. At the same time, we analyzed the variations in the temperature field and strain field, and used a method of speeds variation of the upper and lower work rolls to calibrate the
Zone-Ching Lin, Y. C. Cheng
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Modelling heat transfer in hot rolling work rolls
Journal of Materials Processing Technology, 1999Abstract Work rolls in a hot rolling mill are subjected to successive heating and cooling cycles, with the net result of a positive heat influx. This sort of heating might cause damage, as well as shape defects in the rolled strips, so it is therefore necessary to know how the temperature of the rolls increases.
Martha P Guerrero +3 more
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