scholarly journals On a plastic instability criterion for ultra-large radial-axial ring rolling process with four guide rolls

2021 ◽  
Author(s):  
Xuechao Li ◽  
Lianggang Guo ◽  
Fengqi Wang
Keyword(s):  
Plastic Instability ◽  
Rolling Process ◽  
Ring Rolling ◽  
Instability Criterion ◽  
Axial Ring ◽  
Ring Rolling Process

Plastic Instability Criterion of Radial Ring Rolling

2013 ◽  
Vol 690-693 ◽  
pp. 2352-2355 ◽  
Author(s):  
Zeng Hai Xu ◽  
Dong Zhao ◽  
Qiang Wang
Keyword(s):  
Maximum Stress ◽  
Waste Product ◽  
Bending Moment ◽  
Plastic Instability ◽  
Rolling Process ◽  
Ring Rolling ◽  
Instability Criterion ◽  
Combined Action ◽  
Ring Rolling Process ◽  
Rolling Deformation

The ring is subjected to the combined action of rolling deformation and guide rolls in radial ring rolling process. If the rolling process parameters are designed unreasonably, the ring may be deformed unexpectedly or squashed to waste product. In this article, equation of ring’s bending moment in rolling process is developed based on the mechanical model. Then the stress of ring at any point is analyzed and the maximum stress is found out. The plastic instability criterion of radial ring rolling is also proposed based on the analyses above.

Key Technologies for 3D-FE Modeling of Radial-Axial Ring Rolling Process

2008 ◽  
Vol 575-578 ◽  
pp. 367-372 ◽  
Author(s):  
L.G. Guo ◽  
He Yang
Keyword(s):  
Modeling And Simulation ◽  
Optimum Design ◽  
Rolling Process ◽  
Ring Rolling ◽  
Fe Modeling ◽  
Precise Control ◽  
Key Technologies ◽  
Axial Ring ◽  
Forming Characteristics ◽  
Ring Rolling Process

Nowadays, 3D-FE Modeling and simulation is an indispensable method for the optimum design and precise control of radial-axial ring rolling process for its complexities. In this paper, the unique forming characteristics of radial-axial ring rolling have first been summarized, and then some key technologies for 3D-FE modeling of the process have been presented and their solution schemes have been given out, lastly the modeling and simulation of radial-axial ring rolling process have been realized using elastic-plastic dynamic explicit procedure under ABAQUS environment. The work provides an important basis and platform for the future investigations, such as forming mechanism and laws, process optimum design and precise control.

Slip line model for forces estimation in the radial-axial ring rolling process

2018 ◽  
Vol 138-139 ◽  
pp. 17-33 ◽  
Author(s):  
Luca Quagliato ◽  
Guido A. Berti ◽  
Dongwook Kim ◽  
Naksoo Kim
Keyword(s):  
Slip Line ◽  
Rolling Process ◽  
Ring Rolling ◽  
Line Model ◽  
Axial Ring ◽  
Ring Rolling Process

scholarly journals Optimization on cooperative feed strategy for radial–axial ring rolling process of Inco718 alloy by RSM and FEM

2016 ◽  
Vol 29 (3) ◽  
pp. 831-842 ◽  
Author(s):  
Xinglin Zhu ◽  
Dong Liu ◽  
Yanhui Yang ◽  
Yang Hu ◽  
Yong Zheng
Keyword(s):  
Rolling Process ◽  
Ring Rolling ◽  
Axial Ring ◽  
Feed Strategy ◽  
Ring Rolling Process

Effects of Mandrel Structure on Ring Rolling Process for Large-Scale T-Sectioned Ring with Numerical Simulation

2013 ◽  
Vol 690-693 ◽  
pp. 2307-2310
Author(s):  
Ping Zhen Zhou ◽  
Li Wen Zhang ◽  
Sen Dong Gu ◽  
Hong Tao Duan ◽  
Li Hong Teng
Keyword(s):  
Numerical Simulation ◽  
Large Scale ◽  
Rolling Process ◽  
Ring Rolling ◽  
Small Ring ◽  
Rigid Plastic ◽  
Axial Ring ◽  
Folding Defect ◽  
Ring Rolling Process ◽  
Forming Defects

The process parameters including the mandrel structure of radial-axial ring rolling is in close relationship with the forming defects such as over-high axial spread and the folding defect in the connecting part of the big and small ring. In this paper, a 3D rigid-plastic and coupled thermal-mechanical finite-element model (FEM) of radial-axial ring rolling for large-scale T-sectioned ring was developed using commercial software of DEFORM-3D. By changing the chamfer radius of mandrel's work roll, the effects of mandrel structure on the height of axial spread which considerably affects the stability of the ring rolling process were investigated. The folding defect was also simulated. The numerical simulation results showed that with the decrement of the chamfer radius r, the metal increasingly accumulated in the big ring and the axial spread height increased. Consequently, the ring rolling process became unstable. Also, the folding angle augmented.

scholarly journals Optimization and Simulation of Machining Parameters in Radial-axial Ring Rolling Process

2011 ◽  
Vol 4 (3) ◽  
pp. 337
Author(s):  
Shuiyuan Tang ◽  
Jiping Lu ◽  
Hongli Fan ◽  
Ruizhao Du ◽  
Zhonghua Jian ◽  
...  
Keyword(s):  
Rolling Process ◽  
Ring Rolling ◽  
Machining Parameters ◽  
Axial Ring ◽  
Optimization And Simulation ◽  
Ring Rolling Process
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