Transactions of Materials and Heat Treatment

Title：Boundary conditions during vertical hot extrusion of thickwall seamless steel tube

Authors： MA Xiao-hui BIAN Yi PENG Chong YAN Hong-yan ZHONG Zhi-ping

Unit： Beijing Research Institute of Mechanical & Electrical Technology

KeyWords： vertical extrusion proportional reduction experiment finite element simulation boundary conditions

ClassificationCode：TG376.2

year,vol(issue):pagenumber：2011,36(4):119-122

Abstract：

P91 thickwall seamless steel tube vertical extrusion process was studied. The loadstroke curve with extrusion ratio of 5, 7and 9 was obtained during extrusion process using proportional reduction method. Extrusion deformation in different boundary conditions was performed using Deform software. By comparative analysis of the finite element simulation results and experimental datas, the friction coefficient μ(0.03～0.05) was finally determined, which provided reasonable boundary conditions for the extrusion process of large diameter thick wall seamless steel tube.

Funds：

国家科技重大专项课题（2010ZX04017-013）

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