Research on mathematical model of asymmetric rolling force of sandwich clad plate

YI Ya-li; HAN Xiao-kai; JIN He-rong

doi:10.13228/j.boyuan.issn0449-749x.20200044

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Iron and Steel ›› 2020, Vol. 55 ›› Issue (9) : 69-80. DOI: 10.13228/j.boyuan.issn0449-749x.20200044

Metal Forming

Research on mathematical model of asymmetric rolling force of sandwich clad plate

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Abstract

In order to realize the prediction of the asymmetric rolling force of the sandwich clad plate, a force analysis was performed on a stainless steel clad plate in which a thin plate was directly added as an intermediate layer. The rolling deformation zone was divided into five zones according to the deformation characteristics of each metal layer and the change of the rolling frictional direction. The linear distribution of the normal stress and shear stress at the vertical sides of each slab between the layers of the metal was considered. The effects of shear yield stress ratio, roll diameter ratio and friction coefficient ratio on the stress distribution of each layer element and the positional changes of neutral point and connection point under different reduction ratios are studied. Five-pass asymmetric rolling simulation of 316L/Ni/EH40 clad plate is carried out using MSC.Marc finite element simulation software. The stress state of the rolling deformation zone was consistent with the theoretical model. The error between the rolling force and the theoretical calculation value of each pass was within 10%.The results show that the model can improve the accurate prediction of the asymmetric rolling force of sandwich clad plate.

Key words

sandwich clad plate / asymmetric rolling force / mathematical model / deformation partitioning / finite element simulation

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YI Ya-li, HAN Xiao-kai, JIN He-rong. Research on mathematical model of asymmetric rolling force of sandwich clad plate[J]. Iron and Steel, 2020, 55(9): 69-80 https://doi.org/10.13228/j.boyuan.issn0449-749x.20200044

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