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# 模具钢锻造过程等向性能的有限元预测

## 时间：2020-03-09   来源：《模具工业》  作者：李长生，韩亚辉，任津毅，邱春林，高彩茹   浏览次数：647

（东北大学轧制技术及连轧自动化国家重点实验室，辽宁沈阳110819）

DOI：10.16787/j.cnki.1001-2168.dmi.2020.02.001

Finite element prediction of isotropy of die steel in forging process

LI Chang-sheng, HAN Ya-hui, REN Jin-yi, QIU Chun-lin, GAO Cai-ru (State Key Laboratory of Rolling and Automation, Northeastern University,
Shenyang, Liaoning 110819, China)

Abstract: A finite element method for calculating isotropy in forging process was proposed. Firstly, the unit deformation work in the X, Y and Z directions of forging process was calculated. Subsequently, the unit deformation work in each direction was accumulated, respectively. Finally, the ratio of the accumulated deformation work in the directions was calculated associating with the isotropy definition. According to the proposed method, the isotropy calculations of H13 steel with the method of cross-heading forging in process of upsetting twice and drawing twice (upsetting ratio of 2, drawing ratio of 2) were 0.50 and 0.47, and the corresponding experimental results were 0.51 and 0.48. Whilst the isotropy calculations of 718 steel with the method of repeated axial upsetting in process of upsetting once and drawing once, upsetting twice and drawing twice (upsetting ratio of 2, drawing ratio of 2) were 0.76, 0.81 and 0.92, 0.98, respectively, and the corresponding experimental results were 0.771, 0.824 and 0.948, 0.974. It proposed the isotropy prediction method of die steel in forging process, which had important theoretical guiding significance for reducing cost and optimizing forging process.

Key words: finite element; isotropy; die steel; forging; impact energy