Study on Deformation Law of Drum-Shaped Blank and Collapse Defect in Rolling Process

Abstract:

Based on the FEM software simufact.forming, a finite element model of the radial-axial ring rolling for one ring product was constructed and the rolling process under different drum-shaped blanks were simulated in this paper, which revealed the variation of drum-shaped blank in the rolling process, analyzed the formation process and further proposed measures of eliminating collapse defect. The results show that the drum disappearing rate in initial rolling stage is greater than in later stage and it becomes increasingly difficult to disappear, which leads to collapse defect in the end. The drum-shape can be reduced by greater radial feed in initial rolling stage in the case of small drum-shape or rounding before rolling on ring rolling machine in the case of large drum-shape for avoiding collapse defect. The results provide valuable guiding significance for practical production.

• Periodical: Advanced Materials Research (Volumes 941-944)
• Pages: 1682-1687
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.941-944.1682
• Online since: June 2014
• Authors: Lei Gang Wang*, De Zhi Kong, Jia Yang He, Yao Huang
• Keywords: Collapse, Drum-Shaped Blank, Ring Rolling

References

[1] Hu Z H, Liu J P, submitted to Journal of Aeronautical ManufacturingTechnology (2004).

[2] Pu S H, Sun L F, WANG L X, submitted to Journal of Netshap Forming Engineering (2010).

[3] Hu Z H, Hua L, in: Technology of Rotary Metal Forming, Beijing (2010), Chemical Industry Press.

[4] Li H, Fu J H, submitted to Journal of Shanxi Metallurgy (2007).

[5] Wang M, Yang H and Guo L G, submitted to Journal of The Chinese Journal of Nonferrous Metals (2011).

[6] SUN Q H, WANG L G, WU J S et al, submitted to Journal of Forging & Stamping Technology (2011).

[7] Hua L, Huan X G and Zhu C D, in: Theory and Technology Of Ring Rolling, BeiJing (2001), China Machine Press.