Results 261 to 270 of about 32,436 (285)
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Numerical simulation of three-rolls cross-wedge rolling of hollowed shaft
Journal of Materials Processing Technology, 2005Abstract In this paper, the results of numerical calculations of the forming of hollowed shafts with the use of three-rolls cross-wedge rolling method (CWR) are presented. The research aimed at confirming possibilities of application of this method in the production of hollowed shafts.
J. Bartnicki, Z. Pater
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One-way successive plate cross wedge rolling machine
Science in China Series E: Technological Sciences, 2010In our last paper (Sci China Ser E-Tech Sci, 2009, 52(11): 3117–3121) we designed the precision forming machine with rolling plate CWR (cross wedge rolling). This kind of machine colligates the advantages of high rigidity and small floor space for roller CWR machine and those of simple die manufacture and high precision for plate CWR machine.
YuQuan Song, MingHui Wang, ZhiGang Li
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Predicting Critical Friction in a Two-Roll Cross Wedge Rolling Process
Journal of Tribology, 2002Excessive interfacial slip is one of the primary failure mechanisms in the cross wedge rolling (CWR) process. In order to predict operating conditions that lead to excess interfacial slip, an analytical method is presented for determining the critical rolling condition in a two-roll CWR operation.
Qiang Li and, Michael R. Lovell
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Cross wedge rolling failure mechanisms and industrial application
The International Journal of Advanced Manufacturing Technology, 2007Cross wedge rolling (CWR) is an innovative metal forming technology with several well-documented benefits over other traditional manufacturing processes. Over the past several years, CWR technology has obtained overwhelming popularity within the United States, especially in the automotive industry.
Qiang Li, Michael Lovell
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Finite element analysis of cross wedge rolling
Journal of Materials Processing Technology, 2006Abstract On grounds of finite elements method, three-dimensional mechanical model of cross wedge rolling process has been developed. Examples of numerical simulation for strain distributions, strain rate, mean stress and rolling load components have been included.
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Finite Element Analysis of Cross-Wedge Rolling Process
AIP Conference Proceedings, 2010In this study, a non‐isothermal simulation model for flat‐wedged cross‐wedge rolling (CWR) to fabricate a bullet was presented by using three‐dimensional thermo‐rigid‐plastic finite element method (FEM). Both deformation behavior and heat transfer of the process were taken into account. Based on the simulation results, the distributions of temperature,
Dinh Van Hai +5 more
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A study of cross wedge rolling process
Journal of Materials Processing Technology, 1998Abstract In this paper, a method of modelling the process of cross wedge rolling (CWR) with upsetting has been presented. The method developed is based upon a division of a forming zone into a set of layers, that are then analysed in the conditions of plane state of strain as typical rotary compressing processes.
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New forming possibilities in cross wedge rolling processes
Archives of Civil and Mechanical Engineering, 2018Abstract The paper describes limitations in the process of cross wedge rolling (CWR). The problem of necking (rupture) of a shaft step is discussed in detail. In addition, the paper also overviews the state of the art of modelling the cross wedge rolling process by the finite element method-based software, Deform-3D.
Zbigniew Pater +2 more
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Study of the process stability of cross wedge rolling
Journal of Materials Processing Technology, 1999The process stability and acceptable quality of forgings should be assured during properly designed cross wedge rolling (CWR). As shown in industrial practice, the slipping occurring between the forging being formed and a tool segment is the most important factor disturbing the CWR process. Furthermore, forging necking (in the case of conventional CWR)
Zb. Pater +3 more
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Rigid-Plastic Finite Element Analysis of Cross Wedge Rolling
Materials Science Forum, 2010In the cross wedge rolling process, many factors must be controlled to obtain the required plastic strain and desired tolerance values. The major factors include the wedge relative velocity, the forming angle, the spreading angle, and sectional reduction.
Dyi Cheng Chen +3 more
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