Transactions of Materials and Heat Treatment

Title：Technology of rolling with single groove for GH4169 profiled section

Authors： Yu Liang Pang Yuhua Liu Dong Wu Wei Gao Lei

Unit： Xi′an University of Architecture and Technology Research Center of Metallurgical Engineering and Technology of Shaanxi Province School of Materials Northwestern Polytechnical University

KeyWords： alloy GH4169 profiled section rolling groove design FEM metallographic organization rolling with single groove

ClassificationCode：TG337.1；TG335.4

year,vol(issue):pagenumber：2017,42(6):101-106

Abstract：

A hot rolling process of alloy GH4169 with profile was described, and the threedimensional rigidplastic finite element model of rolling process with single groove and less passes was established by finite element simulation software combining experiments. For the profiled blank, the hole fullness, deformation temperature, equivalent stress and the equivalent strain distribution in rolling process were analyzed. The simulation results show that the hole fullness is good and the equivalent strain is 0.3-1.4 rolling by Φ160 mm×200 mm rolling mill and through single groove and two passes under initial rolling temperature of 1070 ℃ and section reduction ratio of 45%. Based on the simulation results, a hotrolling experiment was conducted by the rolling mill. However, the thickness of billet meets the size requirements, and the width is 2 mm smaller than the required size, but without grain refinement. The main reason of no refinement and smaller width is that the growth degree caused by heating bacause of muhiple heating and rolling is greater than the refinement degree caused by small deformations.

Funds：

陕西省重点研发计划项目(S2017-ZDYF-ZDXM-GY-0115)

于亮（1991-），女，硕士，硕士研究生庞玉华（1965-），女，博士，教授

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