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- W2912331635 abstract "Due to the development of thin slab hot rolling technology, hot rolling thin strip at a higher speed is inevitable. As a result of high-speed rolling, thin slab is deformed at a wide range of strain rate inside the rolling zone. Because the flow stress of steel is strongly dependent on strain rate at elevated temperature, it is imperative to consider its variation when calculating roll force and roll pressure. By substituting time with speed and length, strain rate variation is obtained. A strain rate–dependent flow stress curve for non-oriented silicon steel is implemented into Karman equation to calculate rolling pressure distribution. It is revealed that the rolling force can be effectively reduced by decreasing the radius of work roll. It is further revealed that the appearance of strip/roll surface sticking is more likely at the exit of rolling zone than the neutral point, because strain rate reaches zero and the flow stress drops at the exit. Combined with Influence Function Method for elastic deformation of roll surface, the proposed model can predict roll force with a good accuracy compared with industrial data." @default.
- W2912331635 created "2019-02-21" @default.
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- W2912331635 date "2019-01-01" @default.
- W2912331635 modified "2023-09-26" @default.
- W2912331635 title "Analysis of rate dependency on roll force calculation during hot strip rolling based on Karman equation" @default.
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- W2912331635 doi "https://doi.org/10.1177/1687814018824931" @default.
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