Journal of Northeastern University:Natural Science ›› 2013, Vol. 34 ›› Issue (1): 75-79.DOI: -

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Research on Variation of Work Piece Horizontal Velocity for Variable Gauge Rolling

ZHANG Guang-ji, LIU Xiang-hua, HU Xian-lei, ZHI Ying   

  1. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China.
  • Received:2012-07-31 Revised:2012-07-31 Online:2013-01-15 Published:2013-01-26
  • Contact: ZHANG Guang-ji
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Abstract: To reveal the relationship between the work piece horizontal velocity and roll vertical velocity during variable gauge rolling (VGR), the differential equation of work piece horizontal velocity (equation VGR-V) was set up by keeping material volume. Then it was solved under the VGR boundary conditions, and the formula to calculate the work piece horizontal velocity was obtained. Furthermore, it was proved that equal discharge per second condition (EDSC) no longer fits VGR processes. Some typical examples were given, so that the influence of technological parameters on the work piece horizontal velocity was presented. It provided a theoretical basis for researching on deformation parameters and mechanical parameters in VGR processes.

Key words: variable gauge rolling, velocity relationship, differential equation, discharge per second, conservation of mass

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