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Hydrodynamics Method and Its Application in Hot Strip Rolling
Author(s) -
Li Si,
Wang Zhigang,
Ruan Jinhua,
Liu Changming,
Xu Zengbing
Publication year - 2017
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201600220
Subject(s) - mechanics , plane (geometry) , coulomb friction , stress (linguistics) , constant (computer programming) , coulomb , materials science , mathematical analysis , mathematics , physics , geometry , computer science , nonlinear system , linguistics , philosophy , quantum mechanics , programming language , electron
A hydrodynamics method (HM) has been developed to predict the contact stresses in hot strip rolling. This method is based on that materials deformed in hot rolling present properties of viscous fluid. The contact stress formulas are derived from Navier–Stokes equation (N‐S equation) by using HM. The contact stresses predicted by these formulas agreed well with the experiment data, which verified the validity of these formulas. By comparisons of experiment data with the results predicted by the derived formulas, the Amontons–Coulomb friction model (ACM) and the Absolute constant friction model (AFM), it is found that formulas derived by HM can smooth the friction hill and has higher accuracy in predicting the neutral plane positon than the ACM and the AFM did. It is believed that the contact stress formulas derived by HM can be used to solve on line hot rolling problems.