Transactions of Materials and Heat Treatment

Title：Influence of different reductions on residual stress distribution of skew roller straightening for seamless steel pipe

Authors： Li Yanhui Song Hua Miao Lu

Unit： University of Science and Technology Liaoning

KeyWords： skew roller cold straightening of seamless steel pipe elastic-plastic finite element axial residual stress hoop residual stress

ClassificationCode：

year,vol(issue):pagenumber：2015,40(4):64-68

Abstract：

Starting from studying the straightening process of seamless steel pipe 2-2-2 by skew roller straightener， and based on large deformation elastic-plastic finite element method, numerical model of skew roller cold straightening for Ф88 mm×10 mm×2500 mm seamless steel pipe was established by using ANSYS/LS-DYNA software. Through the simulation analysis, the influence on different reductions of residual stress distribution of seamless steel pipe after straightening was obtained, which was compared with XRD results. The simulation results show that axial and hoop residual peak stresses of seamless steel pipe increase with the increasing of reduction amount; the axial residual stress on the inner surface of seamless steel pipe is compressive stress, while that on the outer surface is tensile stress; the hoop residual stress changes gradually from compressive stress to tensile stress along the thickness direction from inside surface to outside surface, and the closer it is to inner or outer surface，the bigger the residual stress is. In conclusion, simulation results and practical results are consistent.

Funds：

辽宁科技大学青年教师科研基金资助项目（20140038）

李艳辉（1979-），女，硕士，助教

Reference：

[1]李阳华，李红英，尹浩,等. 基于ANSYS/LS-DYNA的V150 油套管热矫直残余应力[J]. 中南大学学报，2013， 44（4）：1373-1379.

Li Y H, Li H Y, Yin H,et al. Residual stresses of hot straightening V150 casing by ANSYS/LS-DYNA[J]. Journal of Central South University, 2013，44（4）：1373-1379.

[2]李连进. 六辊斜轧无缝钢管矫直机的压下量研究[J]. 锻压技术，2008，33（5）：82-84.

Li L J. Study of reduction rate for cross-roll seamless steel tube straightener [J]. Forging & Stamping Technology, 2008，33（5）：82-84.

[3]陈凯凯，齐明侠，杨伟超,等. 基于相对挠度的钢管矫直理论及其实验验证[J].锻压技术，2014，39（2）：123-127.

Chen K K, Qi M X, Yang W C,et al. Steel tube straightening theory based on the relative deflection and its experimental verification[J]. Forging & Stamping Technology, 2014，39（2）：123-127.

[4]崔甫. 矫直原理与矫直机械[M]. 北京：冶金工业出版社，2002.

Cui P. Straightening Principle and Straightening Machine [M]. Beijing: Metallurgical Industry Press, 2002.

[5]王学文，杨兆建，段雷. ANSYS优化设计若干问题探讨[J]. 塑性工程学报，2007， 14（6）:181-184.

Wang X W, Yang Z J, Duan L. About some optimization design problems of ANSYS[J]. Journal of Plasticity Engineering, 2007， 14（6）:181-184.

[6]李连进. 用有限元方法分析石油套管矫直产生的残余应力[J]. 钢管，2006，35(2): 29-32.

Li L J. Residual stress analysis of oil casing during straightening by finite element method[J]. Steel Pipe, 2006，35(2): 29-32.

[7]解国柱，刘利刚，王青峰. 100 mm 特厚板轧制变形均匀性模拟研究[J]. 上海金属，2012，34（2）:44-49.

Xie G Z, Liu L G, Wang Q F. Numerical simulation to the deformation uniformity of ultra-heavy plate of 100 mm during rolling process [J]. Shanghai Metals, 2012， 34（2）:44-49.

[8]高玉魁，张志刚. 残余应力的测量与模拟分析方法[J]. 失效分析与预防，2009，（4）：251-254.

Gao Y K, Zhang Z G. Measurement and simulation methods of residual stresses [J]. Failure Analysis and Prevention，2009，（4）：251-254.

[9]周玉. 材料分析方法[M]. 北京：机械工业出版社，2006.

Zhou Y. Methods for Material Analysis [M]. Beijing: China Machine Press, 2006.

Service：

【This site has not yet opened Download Service】【Add Favorite】