Finite Element Method Analysis of Micro Cross Wedge Rolling of Metals

Jiang, Zhengyi; Lu, Haina; Wei, Dongbin; Linghu, Kezhi; Xi-nan, Zhao; Zhang, Xiaoming; Wu, Di

doi:10.1016/j.proeng.2014.10.351

Cited by 15 publications

(8 citation statements)

References 8 publications

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“…The results of the latter were reported by, among others, Wei et al [23] and Jiang et al [24] who found that CWR is an effective cold forming process for producing copper parts with a diameter smaller than 1 mm, characterized by high-strength properties.…”

Section: Introductionmentioning

confidence: 66%

Cavity formation in cross-wedge rolling processes

Pater

Tomczak

Bulzak

2018

J. Iron Steel Res. Int.

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The problem of end-face cavity formation in parts produced by cross-wedge rolling was studied in order to reduce material consumption. The cavity depth was measured by the displacement method. Twenty-one different cases of rolling were analysed by finite element method to determine the effects of process parameters such as the wedge tool angle, the temperature of material, the tool velocity and the reduction ratio on the depth of end-face cavities. Relationships between these parameters are examined in order to establish dependencies enabling quick and simple selection of a concavity allowance in order to remove the cavities. The equations for calculating the concavity allowance were verified in an experimental process for manufacturing ball pins with the use of flat tools. Rolling tests were performed using a billet with its length selected in compliance with the established dependencies. The experimental results demonstrate that the proposed solution is a viable method for end-face cavity removal.

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Section: Introductionmentioning

confidence: 66%

Cavity formation in cross-wedge rolling processes

Pater

Tomczak

Bulzak

2018

J. Iron Steel Res. Int.

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“…However, the grained heterogeneity effects on the metal deformability and strain distribution should be considered in microscale forming. It is shown in Figure 18b-d that the continuous laminar distribution of strain in the workpiece has been disturbed due to the inhomogeneous Finite Element Method -Simulation, Numerical Analysis and Solution Techniquesmechanical properties [12][13][14]. The location of the maximum strain and stress cannot be determined easily as that in the conventional CWR process.…”

Section: Novel Materials Model Based On Hall-petch Relationship In Micmentioning

confidence: 99%

“…In Section 4, novel material model with grained heterogeneity in 3D Voronoi tessellation has been developed in the simulation of micro cross wedge rolling, springback analysis in micro flexible rolling and the micro V-bending processes considering grain boundary and generation process of grains in the workpiece [12][13][14][15][16]. The modified FE model in microforming has been applied with the consideration of size effects including material characterization, friction/contact characterization, and other size-related factors presented in Section 5.…”

Section: Introductionmentioning

confidence: 99%

Application of Finite Element Analysis in Multiscale Metal Forming Process

Jiang¹,

Xie²

2018

Finite Element Method - Simulation, Numerical Analysis and Solution Techniques

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The application of finite element analysis has been presented in multiscale metal forming process. A 3D finite element method (FEM) has first been proposed to analyze the deformation mechanism of thin strip cold rolling with the consideration of friction variation in deformation zone. The crystal plasticity finite element method (CPFEM) is applied on the simulation of surface asperity flattening in the uniaxial planar compressing process. 3D Voronoi tessellation and frictional modeling have been applied in microforming processes. All simulation results from the proposed modeling have been validated by the related experimental results.

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“…Figure 3(a) shows an example of stepped shaft micro product manufactured by MCWR technology with a pair of flat wedges that are made of tool steel (Figure 3(b)). [15]. Wedges first cut into workpiece in its middle part and then, the V-shaped groove is generated along the entire circumference after the guiding zone.…”

Section: Size Effects In Micro Cross Wedge Rollingmentioning

confidence: 99%

Size effects in micro rolling of metals

Zhao

Xie

et al. 2017

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. Size effects are a unique characteristic with miniaturisation, and may cause a number of unexpected problems in micro rolling of metals in the aspects of mechanical behaviour, tribology, and scatter of material behaviour. This paper has introduced three kinds of micro rolling technologies, including micro ultrathin strip rolling, micro flexible rolling and micro cross wedge rolling, and analysed the size effects appeared in each of the micro rolling process. This paper will be helpful for understanding the problem of size effects, and can contribute to the manufacturing of high quality micro metallic products by minimising the impact of size effects in micro rolling with optimised processing parameters.

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Finite Element Method Analysis of Micro Cross Wedge Rolling of Metals

Cited by 15 publications

References 8 publications

Cavity formation in cross-wedge rolling processes

Cavity formation in cross-wedge rolling processes

Application of Finite Element Analysis in Multiscale Metal Forming Process

Size effects in micro rolling of metals

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