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leng zha ying hua can shu ( ) de jing que ji suan gong shi
Author(s): Zhao Dewen Wang Guodong Zhang Oiang
Pages: 85-
92
Year: 1990
Issue:
4
Journal: Materials Science and Technology
Keyword: Cold rolling; mean total relative reduction; equation of the contact arc; mean value theorem;
Abstract: In this paper,an accurate equation to the arc of contact in rolling is established and transformed into explicit function by using the root of quad- ratic equation.From the equation an accurate formula of (ˉε) has been deeuced by applying mean value theorem.It has been shown that the hardening para- meter (ˉε) is a function of total relative reduction on exit side ε_h(corresponding to annealing condition),roll cadins R,annealing thickness H_0 and pass reduction Δh.Some comments on prevailing approximate formulas are pres- ented in the paper.
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