Investigation of Tool Wear and Chip Morphology in Dry Trochoidal Milling of Titanium Alloy Ti–6Al–4V
Abstract
:1. Introduction
2. Experimental Procedures
2.1. Experimental Setup
2.2. Experimental Design
- (1)
- Average flank wear VB = 0.2 mm;
- (2)
- Maximum flank wear VB_max = 0.3 mm;
- (3)
- Excessive chipping/flaking or catastrophic failure.
3. Results and Analysis
3.1. Tool Wear Model Related with Radial Depth of Cut
3.2. Tool Wear and Chip Morphology
3.3. Trochoidal Milling Test
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Element | Al | V | Fe | O | C | N | H | Ti |
---|---|---|---|---|---|---|---|---|
wt.% | 5.5–6.8 | 3.5–4.5 | <0.5 | <0.2 | <0.1 | <0.05 | <0.015 | balance |
Physical Properties | Density (kg/m3) | Elastic Modulus (GPa) | Yield Strength (MPa) | Thermal Conductivity (W/(m·K)) | Hardness (HRC) | Melting Point (°C) | ||
value | 4430 | 113.8 | 880 | 6.7 | 36 | 1604–1660 |
Diameter (mm) | Number of Flutes | Helix Angle (°) | Corner Radius (mm) | Coating | Rake Angle (°) | Clearance Angle (°) | Second Clearance Angle (°) | Hardness (HRC) |
---|---|---|---|---|---|---|---|---|
12 | 4 | 35 | 0.5 | TiAlN (3 μm) | 4 | 8 | 20 | 65 |
Test No. | Cutting Speed (m/min) | Radial Depth of Cut ae (mm) | Spindle Speed (rpm) | Feed Rate (mm/min) |
---|---|---|---|---|
1 | 60 | 0.2 | 1592 | 637 |
2 | 0.4 | |||
3 | 0.6 | |||
4 | 130 | 0.2 | 3448 | 1379 |
5 | 0.4 | |||
6 | 0.6 | |||
7 | 200 | 0.2 | 5305 | 2122 |
8 | 0.4 | |||
9 | 0.6 |
Test No. | VMR (mm3) | Effective Cutting Time (s) | MRR (mm3/min) |
---|---|---|---|
1 | 77,280 | 18,198 | 254.8 |
2 | 30,360 | 3575 | 509.6 |
3 | 85,146 | 6683 | 764.4 |
4 | 45,080 | 4904 | 551.6 |
5 | 4692 | 255 | 1103.2 |
6 | 8786 | 319 | 1654.8 |
7 | 13,340 | 943 | 848.8 |
8 | 1472 | 52 | 1697.6 |
9 | 1518 | 36 | 2546.4 |
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Liu, D.; Zhang, Y.; Luo, M.; Zhang, D. Investigation of Tool Wear and Chip Morphology in Dry Trochoidal Milling of Titanium Alloy Ti–6Al–4V. Materials 2019, 12, 1937. https://doi.org/10.3390/ma12121937
Liu D, Zhang Y, Luo M, Zhang D. Investigation of Tool Wear and Chip Morphology in Dry Trochoidal Milling of Titanium Alloy Ti–6Al–4V. Materials. 2019; 12(12):1937. https://doi.org/10.3390/ma12121937
Chicago/Turabian StyleLiu, Dongsheng, Ying Zhang, Ming Luo, and Dinghua Zhang. 2019. "Investigation of Tool Wear and Chip Morphology in Dry Trochoidal Milling of Titanium Alloy Ti–6Al–4V" Materials 12, no. 12: 1937. https://doi.org/10.3390/ma12121937