A Mandrel Feeding Strategy in Conical Ring Rolling Process

A mathematical model for radial conical ring rolling with a closed die structure on the top and bottom of driven roll, simplified as RCRRCDS, was established. The plastic penetration and biting-in conditions in RCRRCDS process were determined. A mandrel feeding strategy for RCRRCDS process was proposed. The mandrel feed rate and its reasonable value range were deduced. The coupled thermal-mechanical FE model of RCRRCDS process was established. The reasonable value range of the mandrel feed rate was verified by using numerical simulation method. The results indicate that the reasonable value range of the mandrel feed rate is feasible, the proposed mandrel feeding strategy can realize a steady RCRRCDS process, and the forming quality of conical ring rolled by using the proposed feeding strategy is better than that of conical ring rolled by using a constant mandrel feed rate.

[1]  M. Wang,et al.  Analysis of coupled mechanical and thermal behaviors in hot rolling of large rings of titanium alloy using 3D dynamic explicit FEM , 2009 .

[2]  Rong-Shean Lee,et al.  Process design based on the deformation mechanism for the non-isothermal forging of Ti-6Al-4V alloy , 1998 .

[3]  Shaoqun Zeng,et al.  The key technology and realization of virtual ring rolling , 2007 .

[4]  K. Davey,et al.  A practical method for finite element ring rolling simulation using the ALE flow formulation , 2002 .

[5]  Xiaobing Yang,et al.  A new mathematical model for predicting the diameter expansion of flat ring in radial–axial ring rolling , 2012 .

[6]  Naksoo Kim,et al.  Optimal design to reduce the maximum load in ring rolling process , 2012 .

[7]  Guang Zhou,et al.  Effects of axial rolls motions on radial–axial rolling process for large-scale alloy steel ring with 3D coupled thermo-mechanical FEA , 2012 .

[8]  Man-Soo Joun,et al.  A dual-mesh approach to ring-rolling simulations with emphasis on remeshing , 2013 .

[9]  A. Erman Tekkaya,et al.  State-of-the-art of simulation of sheet metal forming , 2000 .

[10]  T A Dean,et al.  The interfacial heat transfer coefficient in hot die forging of titanium alloy , 1998 .

[11]  Yang He,et al.  Numerical Study on Motions of Rolls in Hot Rolling of Titanium Alloy Large Rings , 2012 .

[12]  Trevor A. Dean,et al.  Experimental and theoretical analysis of deformation and microstructural evolution in the hot-die forging of titanium alloy aerofoil sections , 1999 .

[13]  Gerhard Hirt,et al.  Manufacturing dish shaped rings on radial-axial ring rolling mills , 2013, Prod. Eng..

[14]  Zhongyuan Jiang,et al.  Feeding strategy design for steel 42CrMo in radial-axial ring rolling using processing map , 2014 .

[15]  Yang He,et al.  Effects of process parameters on microstructural evolution during hot ring rolling of AISI 5140 steel , 2010 .

[16]  He Yang,et al.  Towards a steady forming condition for radial–axial ring rolling , 2011 .