Transactions of Materials and Heat Treatment

Title：Study on characteristics of rolling process for stainless steel composite plate

Authors： Kang Geng Li Yugui Chu Zhibing Ding Zhaoqi Wang Shun

Unit： Taiyuan University of Science and Technology

KeyWords： 304 stainless steel Q235 low carbon steel composite plate rolling constitutive equation Deform-3D

ClassificationCode：TG335

year,vol(issue):pagenumber：2019,44(1):34-42

Abstract：

The thermal deformation behaviors of composite plate for 304 stainless steel and Q235 low carbon steel at deformation temperature of 950-1150 ℃ and strain rate of 0.01-0.1 s-1 were studied by thermal simulation test machine Gleeble-3800, and the flow stress equation at high temperature of stainless steel composite plate was established to describe the high temperature flow characteristics. The experimental data show that the flow stress changes significantly with the change of temperature and strain rate, and the greater the strain rate and the lower the deformation temperature are, the greater the flow stress is. Then, the deformation characteristics of hot rolled stainless steel composite plate during the rolling process were simulated by finite element software Deform-3D, and the distribution of stress field, temperature field and rolling force in the thickness direction of the composite plate under different reduction rates were analyzed. The results show that the surface stress of the stainless steel composite plate is the largest and gradually decreases from the surface to the interior, and the temperature near the bonding interface is higher than that in the surface due to the plastic work, heat conduction, heat convection, and so on. Furthermore, the variation trend of the rolling force values measured by the test is consistent with the simulated values, and the error is about 15%. Thus, the simulation results can provide reference for the actual production.

Funds：

国家自然科学基金资助项目（U1710113）；国家联合基金重点项目（U1610256）；山西省重点研发项目（201703D 111003）；山西省重大专项（MC2016-01）；中国博士后科学基金项目（2017M622903）

康庚（1991-），男，硕士研究生，E-mail：congerat@163.com；通讯作者：李玉贵（1967-），男，博士，教授，E-mail:liyugui2008@163.com

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