Numerical Model Simulation of the Double-Roll Rotary Forging of Large Diameter Thin-Walled Disk
Abstract
:1. Introduction
2. Three-Dimensional Numerical Modeling of Double-Roll Rotary Forging
2.1. Working Principle of Double-Roll Rotary Forging
2.2. Three-Dimensional Numerical Model and Boundary Conditions
2.3. Determination of Die Movements Relationship
3. Verification Experiment
4. Results and Discussion
4.1. Calculation Scheme
4.2. Deformation Characteristic of Strain Distribution
4.3. Influence of Three Key Parameters on Metal Flow
4.4. Influence of Three Key Parameters on the Force and Power Parameters
5. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Simulation Parameters | AISI-1020 |
---|---|
Density, ρ (kg·m−3) | 7800 |
Young’s modulus (GPa) | 210 |
Poisson’s ratio (μ) | 0.3 |
Thermal conductivity (J/(m·s·K)) | 24.5 |
Specific heat capacity (J/(kg·K) | 7.2 |
Thermal expansion coefficient (1/K) | 13.16 × 10−6 |
Constitutive equation |
Parameters | Value |
---|---|
The initial diameter of disk workpiece D0 (mm) | 244 |
The initial height of disk workpiece H0 (mm) | 35 |
Height reduction (%) | 66.7 |
Rotational speed n of the upper die (rad/min) | 75 |
Feed rate v of the upper die (mm/s) | 1 |
The initial temperature of the disk workpiece (°C) | 1100 |
The initial temperature of die T (°C) | 20 |
Coefficient of friction between upper die and disk workpiece | 0.1 |
Coefficient of friction between lower die and workpiece | 0.7 |
Thermal conductivity between die and disk workpiece (kW/m2·°C) | 15 |
Parameters | Value |
---|---|
The initial diameter of disk workpiece D0 (mm) | 244 |
The initial height of disk workpiece H0 (mm) | 35 |
Height reduction (%) | 33.3 |
Rotational speed n of the upper die (rad/min) | 50, 75, 100, 125, 150 |
Feed rate v of the upper die (mm/s) | 0.5, 1, 1.5, 2, 2.5 |
Feed amount per revolution S (mm/r) | 0.4, 0.8, 2.5 |
Initial temperature T of the disk workpiece (°C) | 1000, 1050, 1100, 1150, 1200 |
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Yu, Z.; Chen, M.; Ma, C.; Luo, S.; Zhu, C. Numerical Model Simulation of the Double-Roll Rotary Forging of Large Diameter Thin-Walled Disk. Metals 2021, 11, 1767. https://doi.org/10.3390/met11111767
Yu Z, Chen M, Ma C, Luo S, Zhu C. Numerical Model Simulation of the Double-Roll Rotary Forging of Large Diameter Thin-Walled Disk. Metals. 2021; 11(11):1767. https://doi.org/10.3390/met11111767
Chicago/Turabian StyleYu, Zhongquan, Mingchao Chen, Chong Ma, Site Luo, and Chundong Zhu. 2021. "Numerical Model Simulation of the Double-Roll Rotary Forging of Large Diameter Thin-Walled Disk" Metals 11, no. 11: 1767. https://doi.org/10.3390/met11111767