The estimation of surface thermal behavior of the working roll in hot rolling process

C. H. Huang, T. M. Ju, A. A. Tseng

研究成果: Article同行評審

50 引文 斯高帕斯(Scopus)

摘要

A two-dimensional inverse analysis utilizing the conjugate gradient method of minimization is applied to estimate the surface thermal behavior (i.e. heat flux and temperature) of a roll which was used in steel rolling mills with water cooling. No prior information is needed for the functional forms of timewise and spacewise variation of the surface heat flux and temperature. The transient temperature recordings inside the roll are modified from the existing experimental data and serve as the simulated experimental data for the inverse analysis. The results show that the estimation of surface heat flux and temperature becomes worse when the temperature measurements are taken too far away from the surface, due to a thin thermal layer. Once the surface heat flux is determined, the surface heat transfer coefficients can be calculated based on the Fourier law, provided that the ambient temperatures are known. After the surface heat transfer coefficients of the roll are determined, an evaluation of the cooling system of the roll can be performed.

原文English
頁(從 - 到)1019-1031
頁數13
期刊International Journal of Heat and Mass Transfer
38
發行號6
DOIs
出版狀態Published - 1995 4月

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學
  • 機械工業
  • 流體流動和轉移過程

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