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In the forming process of V-type ring groove on steel pipe by hot skew rolling, because the technology and metal flow characteristics in skew rolling process result in deformation of internal wall during modeling process and the deformation effects directly on the dimensional accuracy of parts. This paper is to analysis finite element simulation of the forming process of V-type ring groove by hot...
Elliptical shaft has been using widely in blank forming for various kinds of precision forging and its step is mostly formed into cone shape with cross wedge rolling (CWR) process. To solve the spiral cone volume, a mathematic model was established by the analysis of rolling process for the CWR elliptical shaft, and shaping curve of oblique step was calculated with the volume invariance principle...
Axial force in CWR plays an important role in studying the forming quality of asymmetric shaft-parts, section shrinkage of rolled part and rolling of heavy area reduction. This paper proves that calculating axial force by FEM has favorable reliability and versatility; by using ANSYS/LS-DYNA FE software, a certain number of axial forces have been obtained successfully and the formula of axial force...
The multi-wedge cross wedge rolling (MCWR) is a new advanced technology of forming automobile semi-axes with many advantages such as saving the surface of roller remarkably and reducing the size of equipment. The design and calculation of dies is complex, therefore, the technology of MCWR forming automobile semi-axes is limited in practical application to some extent. In order to solve the problems...
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