Modeling of on-line measurement for rolling the rings with blank size errors in vertical hot ring rolling process

Axial deformation of the ring during the traditional vertical hot ring rolling (VHRR) process has a considerable effect on the ring products’ quality. In this paper, the ring’s axial deformation of VHRR process of three different rolling modes, that is, open-die mode, close-die mode and open-die mode with conical rolls like the radial-axial ring rolling (RARR) process is analyzed. Three groups of 3D coupled thermo-mechanical FE models of VHRR process are established in software ABAQUS, and the axial deformation and the width spread of the rings are studied in detail. Finally, a special conical roll device was designed and equipped on the traditional VHRR mill, and series of VHRR experiments are conducted, the results of both simulation and VHRR process show that the formed rings utilizing open-die rolling with a special pair of conical rolls has lower axial deformation, smoother end surface and higher precision than the formed rings utilizing open-die rolling and close-die rolling. The research results can supply an effective approach to axial deformation control of traditional VHRR process.

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

Materials Science Forum ◽

10.4028/www.scientific.net/msf.575-578.367 ◽

2008 ◽

Vol 575-578 ◽

pp. 367-372 ◽

Cited By ~ 5

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.

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FE Simulation of Microstructure Evolution during Ring Rolling Process of INCONEL Alloy 783

10.7449/2010/superalloys_2010_297_305 ◽

2010 ◽

Cited By ~ 1

Author(s):

J. Yeom ◽

E. Jung ◽

J. Hong ◽

J. Kim ◽

J. Lee ◽

...

Keyword(s):

Microstructure Evolution ◽

Fe Simulation ◽

Rolling Process ◽

Ring Rolling ◽

Inconel Alloy ◽

Ring Rolling Process

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Effect of the Guide-Roll Positional Angle to the Stability of Radial Ring Rolling

Materials Science Forum ◽

10.4028/www.scientific.net/msf.561-565.1875 ◽

2007 ◽

Vol 561-565 ◽

pp. 1875-1878 ◽

Cited By ~ 2

Author(s):

Yong Xing Hao ◽

Lin Hua ◽

Gui Shan Chen ◽

Dao Ming Wang

Keyword(s):

Position Angle ◽

Rolling Process ◽

Ring Rolling ◽

Positional Angle ◽

The Mean ◽

The Stability ◽

Ring Rolling Mill ◽

Ring Rolling Process ◽

Ring Blank ◽

Evaluating Method

Non-stability factors affect stability of radial ring rolling process, and lead to fluctuating of ring position. This decreases rolling precision. Evaluating stability of the process is very important. A stability evaluating method is proposed. The stability can be measured with the mean square root of sequence of oscillation of ring geometrical centerline displacement. Using ABAQUS/Explicit, the stability is analyzed. It is showed that guide-roll position angle has the significant effect to the stability. If guide-roll is located at the tangential position to the ring’s fringe, the stability will vary with the angle between two planes. One passes through axes of guide roll and ring blank, and another passes through axes of drive roll and ring blank. The stability is highest when guide roll is situated at the position angle of 100˚to 130˚at exit side of ring rolling mill.

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