Abstract
Language | English |
---|---|
Pages | 244-249 |
Number of pages | 6 |
Journal | IFAC-PapersOnLine |
Volume | 49 |
Issue number | 20 |
DOIs | |
Publication status | Published - 14 Nov 2016 |
Event | 17th IFAC Symposium on Control, Optimization and Automation in Mining, Mineral and Metal Processing - Vienna University of Technolog, Vienna, Austria Duration: 31 Aug 2016 → 2 Sep 2016 http://www.ifacmmm2016.org/ |
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Keywords
- process automation
- process control
- rolling
- sensor systems
- image processing
- industrial control
- forging processes
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Curvature control in radial-axial ring rolling. / Arthington, Matthew R.; Cleaver, Christopher J.; Huang, Jianglin; Duncan, Stephen R.
In: IFAC-PapersOnLine, Vol. 49, No. 20, 14.11.2016, p. 244-249.Research output: Contribution to journal › Conference Contribution
TY - JOUR
T1 - Curvature control in radial-axial ring rolling
AU - Arthington, Matthew R.
AU - Cleaver, Christopher J.
AU - Huang, Jianglin
AU - Duncan, Stephen R.
PY - 2016/11/14
Y1 - 2016/11/14
N2 - Radial-axial ring rolling (RARR) is an industrial forging process that produces seamless metal rings with uniform cross-section using one radial and one axial rolling stage. Conventionally, the ring products are circular and the process is tightly constrained using guide rolls for stability, and to ensure the circularity and uniformity of the ring. Recent work has shown that when guide rolls are omitted, stability can be maintained using differential speed control of the roll pairs. However, achieving uniform curvature in this unconstrained configuration was not always possible when the controller only centred the ring within the rolling mill. In addition to the regulation of constant curvature in circular rings, differential speed control in unconstrained rolling offers an opportunity to bend the ring about the mandrel to create shapes with nonuniform curvature, for example: squares, hexagons, rings with flat sections, etc. We describe a control technique for creating non-circular rings using the rolling hardware of a conventional RARR mill, machine-vision sensing and differential speed control of the rolling stages. The technique has been validated for an industrial material in numerical simulations using the finite element method and also demonstrated on a desktop-scale RARR mill using modelling clay to simulate metal at elevated process temperatures.
AB - Radial-axial ring rolling (RARR) is an industrial forging process that produces seamless metal rings with uniform cross-section using one radial and one axial rolling stage. Conventionally, the ring products are circular and the process is tightly constrained using guide rolls for stability, and to ensure the circularity and uniformity of the ring. Recent work has shown that when guide rolls are omitted, stability can be maintained using differential speed control of the roll pairs. However, achieving uniform curvature in this unconstrained configuration was not always possible when the controller only centred the ring within the rolling mill. In addition to the regulation of constant curvature in circular rings, differential speed control in unconstrained rolling offers an opportunity to bend the ring about the mandrel to create shapes with nonuniform curvature, for example: squares, hexagons, rings with flat sections, etc. We describe a control technique for creating non-circular rings using the rolling hardware of a conventional RARR mill, machine-vision sensing and differential speed control of the rolling stages. The technique has been validated for an industrial material in numerical simulations using the finite element method and also demonstrated on a desktop-scale RARR mill using modelling clay to simulate metal at elevated process temperatures.
KW - process automation
KW - process control
KW - rolling
KW - sensor systems
KW - image processing
KW - industrial control
KW - forging processes
UR - http://www.ifacmmm2016.org/
U2 - 10.1016/j.ifacol.2016.10.128
DO - 10.1016/j.ifacol.2016.10.128
M3 - Conference Contribution
VL - 49
SP - 244
EP - 249
JO - IFAC-PapersOnLine
T2 - IFAC-PapersOnLine
JF - IFAC-PapersOnLine
SN - 2405-8963
IS - 20
ER -