Research on the characteristics of cold-rolled deformation zone of thin strip and the applicability of contact pressure model

Huang Ziteng; Li Wei; Luo Xu; Li Junhong; Yu Hui

doi:10.7513/j.issn.1004-7638.2024.06.025

Volume 45 Issue 6

Dec. 2024

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Article Navigation > IRON STEEL VANADIUM TITANIUM > 2024 > 45(6): 184-193

Huang Ziteng, Li Wei, Luo Xu, Li Junhong, Yu Hui. Research on the characteristics of cold-rolled deformation zone of thin strip and the applicability of contact pressure model[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(6): 184-193. doi: 10.7513/j.issn.1004-7638.2024.06.025

Citation:

Huang Ziteng, Li Wei, Luo Xu, Li Junhong, Yu Hui. Research on the characteristics of cold-rolled deformation zone of thin strip and the applicability of contact pressure model[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(6): 184-193. doi: 10.7513/j.issn.1004-7638.2024.06.025

Citation:

Huang Ziteng, Li Wei, Luo Xu, Li Junhong, Yu Hui. Research on the characteristics of cold-rolled deformation zone of thin strip and the applicability of contact pressure model[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(6): 184-193. doi: 10.7513/j.issn.1004-7638.2024.06.025

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Research on the characteristics of cold-rolled deformation zone of thin strip and the applicability of contact pressure model

doi: 10.7513/j.issn.1004-7638.2024.06.025

1.
College of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, Hebei, China
2.
Panzhihua Iron and Steel Research Institute Co., Ltd.,Pangang Group, Panzhihua 617000, Sichuan, China

Received Date: 2023-11-30
Available Online: 2024-12-30
Publish Date: 2024-12-30

Abstract

Abstract

In the process of cold rolling of thin strip, the roll will produce different degrees of elastic flattening, and the different understandings of this phenomenon in each deformation in each deformation zone theory lead to significant difference in its calculation accuracy and application range. Therefore, the finite element method is used to analyze the variation law of the characteristics of the deformation zone in the process of cold rolling of thin strip, and the derivation characteristics, prerequisites and applicable intervals of the three contact pressure models of Stone total slip, Johnson full elasticity and combined type are compared and explored. The results show that with the increasing of the elastic flattening degree of the roll, the contour of the deformation zone undergoes arc shape, arc flattening enlargement, non-arc shape and nearly linear shape, and the occurrence of neutral zone and the increasing proportion of the deformation zone are the main reasons for the rapid decrease of the actual depression rate and the rapid increase of the shape coefficient of the deformation zone. By comparing the simulated and theoretical values of the contact pressure curve in the deformation zone, it can be found out that the Stone model, Johnson model and combined model are suitable for rolling conditions where the pass reduction ratio is greater than 10%, less than 1% and 1%～10%, respectively.
- thin strip cold rolled,
- deformation zone profile,
- elastic flattening of rolls,
- neutral zone,
- contact pressure

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References(25)

References

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