Study of the process stability of cross wedge rolling

Pater, Z.; Weroński, W.; Kazanecki, J.; Gontarz, A.

doi:10.1016/s0924-0136(99)00229-0

Cited by 24 publications

(12 citation statements)

References 3 publications

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“…By summing up the critical rolling condition of CWR advanced by Hayama et al, 51) Z. Pater et al 52) obtained the diagram of CWR process stability in the given condition. However, the law is only adaptive to the some rolling techniques of the flat CWR.…”

Section: Rolling Stability and Product Qualitymentioning

confidence: 99%

Current Trends in Cross Wedge Rolling for Part Forming

Wang

2005

ISIJ Int.

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Section: Rolling Stability and Product Qualitymentioning

confidence: 99%

Current Trends in Cross Wedge Rolling for Part Forming

Wang

2005

ISIJ Int.

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“…Pater [10] likewise acknowledged that the Mannesmann effect is the most common defect that limits the usage of the CWR technique. In the Mannesmann effect, the central portion of a billet becomes significantly weakened when it is rotated and compressed in the diametric direction.…”

Section: The Overall Void Failure Mechanismmentioning

confidence: 99%

The establishment of a failure criterion in cross wedge rolling

Lovell

2004

Int J Adv Manuf Technol

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Internal defects in the cross wedge rolling (CWR) process can lead to the catastrophic failure of products. Using specialised experiments and the explicit dynamic finite element model (FEM), this work investigates the mechanisms of void generation and growth in the cross wedge rolling process. Based on a combined numerical and experimental approach, the morphology of void generation is determined as a function of the workpiece material and three primary parameters in the cross wedge rolling process: the forming angle, a, the stretching angle, b and the area reduction, D A . Through the definition of a non-dimensional deformation coefficient, _ , a method for predicting the likelihood of void formation is subsequently ascertained and discussed with respect to CWR tooling design and operating conditions.

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“…Most scholars have used the single wedge-single pass model, based on rolling theory and fracture mechanics to indirectly analyze the generation mechanism and critical conditions of void formation as a function of mechanical parameters; however, during actual production, due to the complicated structure of rolled workpieces and the large amount of deformation they experience, multi-wedge combined multi-pass CWR is typically used. Material deformation is also sequential, and the rolling process factors interact with each other, making it difficult to determine the critical conditions of internal void formation using theoretical analysis in practical production [22][23][24][25]. When a company uses forging technology to produce connecting rods, CWR is used to create billets and internal voids form in the rolled products.…”

Section: Introductionmentioning

confidence: 99%

Influence of die parameters on internal voids during multi-wedge-multi-pass cross-wedge rolling

Jia

Ji²,

Wang

et al. 2020

Int J Adv Manuf Technol

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The formation of internal voids in workpieces during cross-wedge rolling affects die design and limits their widespread applications. This article investigated the formation of internal voids during the multi-wedge-multi-pass rolling production of connecting rods. A three-dimensional numerical simulation model of cross-wedge rolling (CWR) was established using the rigid-plastic finite element method, and a density change model of the porous material was developed to characterize the degree of internal void formation in the connecting rod during CWR. The optimal die parameters (forming angle, spreading angle, and distribution coefficient of area reduction) were determined by determining their relationship to the density. The stress and strain of characteristic points near the loose longitudinal sections were used to study the void formation mechanisms. The accuracy of the numerical simulations was verified by rolling experiments, which showed no void formation in the internal sections of the connecting rod after production, confirming the feasibility of using this scheme to prevent void formation.

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Study of the process stability of cross wedge rolling

Cited by 24 publications

References 3 publications

Current Trends in Cross Wedge Rolling for Part Forming

Current Trends in Cross Wedge Rolling for Part Forming

The establishment of a failure criterion in cross wedge rolling

Influence of die parameters on internal voids during multi-wedge-multi-pass cross-wedge rolling

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