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| NUMERICAL SIMULATION OF COLD PILGERING OF STAINLESS STEEL TUBES WITH COMPOSITE STRUCTURE |
| LIN Gang; YANG Yuansheng; GUO Dayong; HUA Fuan; ZHOU Quan |
| Institute of Metal Research; The Chinese Academy of Sciences; Shenyang 110016 |
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Cite this article:
LIN Gang; YANG Yuansheng; GUO Dayong; HUA Fuan; ZHOU Quan. NUMERICAL SIMULATION OF COLD PILGERING OF STAINLESS STEEL TUBES WITH COMPOSITE STRUCTURE. Acta Metall Sin, 2004, 40(7): 779-784 .
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Abstract A 3D finite element method is used to the simulation of cold pilgering process of 1Cr18Ni9Ti stainless steel tubes by using ANSYS software, which are cast by electromagnetic centrifugal casting (EMCC) and of the characteristic of composite structure. Simulation results show that during cold pilgering the better the axial plasticity of tubes, the smaller the shear stress $\sigma_{\rm rz}$ and the shear
strain $\varepsilon_{\rm rz}$, as well as the better the property of rolling deformation.
Along with the decrease of the Coulomb friction coefficient not only the $\sigma_{\rm rz}$ and the $\varepsilon_{\rm rz}$
are decreased, but also the discontinuity of $\sigma_{\rm rz}$ between outer columnar
and inner equiaxied zone is decreased.
Moreover, the property of rolling deformation and the quality of tubes are improved. With the increase of exciting currents, which
enlarges equiaxed zone, not only the
mechanical property of the tubes is
improved, but also the $\sigma_{\rm rz}$ and the $\varepsilon_{\rm rz}$ are decreased. Moreover, the property of rolling deformation and the quality of tubes are also improved. The simulation results agree well with the experiment.
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Received: 17 September 2003
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