A Numerical Study on Contact Condition and Wear of Roller in Cold Rolling
Abstract
:1. Introduction
2. Research Methods
2.1. Outline for Studying Contact Reponses and Wear of Roller
2.2. Finite Element Model
2.3. Calculation of Local Sliding Distance
3. Numerical Results
3.1. Distribution of Local Contact Pressure and Local Sliding Distance
3.2. Rolling Parametric Study
3.2.1. Effect of Thickness Reduction
3.2.2. Effect of Roller’s Diameter
3.2.3. Effect of Friction Coefficient
3.2.4. Effect of Blank’s Material Property
3.2.5. Effect of Roller’s Material Property
4. Wear Prediction of the Roller
5. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Parameter | Symbol | Value |
---|---|---|
Plate Thickness | 1.5 mm | |
Thickness reduction | 25% | |
Radius of roller | 95 mm | |
Friction coefficient | 0.25 | |
Angular velocity | 0.35 rad/s |
Material Properties | Blank | Roller |
---|---|---|
Material behavior | Elastic-plastic | Elastic |
Density (kg/m3) | 1780 | 7850 |
Young’s modulus (GPa) | 37.4 | 215.6 |
Poisson’s Ratio | 0.3 | 0.3 |
Parameters | Values Considered |
---|---|
Thickness reduction (%) | 15, 20, 25, 30, 35 |
Radius of roller (mm) | 90, 140, 190, 240, 290 |
Friction coefficient | 0.15, 0.20, 0.25, 0.30, 0.35 |
Material of blank | AZ31, Al7050, TC4, GH4169 |
Material of roller | 9Cr2Mo, Cr15, A532M, 12Cr2Ni4, QT900 |
Material properties | AZ31 | Al7050 | TC4 | GH4169 |
---|---|---|---|---|
Density (kg/m3) | 1780 | 2830 | 5100 | 8190 |
Young’s modulus (GPa) | 37.4 | 70.3 | 112 | 199.9 |
Poisson’s Ratio | 0.3 | 0.33 | 0.34 | 0.3 |
Yield strength (MPa) | 140 | 455 | 887 | 550 |
Tensile strength (MPa) | 311 | 510 | 950 | 965 |
Material Properties | 9Cr2Mo | Cr15 | A532M | 12Cr2Ni4 | QT900 |
---|---|---|---|---|---|
Density (kg/m3) | 7810 | 8470 | 7850 | 7840 | 7180 |
Young’s modulus(GPa) | 236 | 219 | 215.6 | 207 | 181 |
Poisson’s Ratio | 0.3 | 0.3 | 0.3 | 0.29 | 0.27 |
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Jin, Q.; Wang, W.; Jiang, R.; Chiu, L.N.S.; Liu, D.; Yan, W. A Numerical Study on Contact Condition and Wear of Roller in Cold Rolling. Metals 2017, 7, 376. https://doi.org/10.3390/met7090376
Jin Q, Wang W, Jiang R, Chiu LNS, Liu D, Yan W. A Numerical Study on Contact Condition and Wear of Roller in Cold Rolling. Metals. 2017; 7(9):376. https://doi.org/10.3390/met7090376
Chicago/Turabian StyleJin, Qichao, Wenhu Wang, Ruisong Jiang, Louis Ngai Sum Chiu, Di Liu, and Wenyi Yan. 2017. "A Numerical Study on Contact Condition and Wear of Roller in Cold Rolling" Metals 7, no. 9: 376. https://doi.org/10.3390/met7090376