Abstract
Damage-tolerant titanium alloy, TC21, is widely used for the important components of the new-generation aircraft with high strength and durability requirements, many of which are machined by plunge milling. For optimizing the plunge milling parameters and improving machining efficiency, a number of experiments were carried out to study the machinability of plunge milling TC21. The effects of plunge milling parameters on cutting forces, the cutting temperature, and the tool life were investigated and analyzed. The process of the tool failure and the mechanism of tool wear were explored. Results showed that the cutting temperature had more influence than cutting force under the same parameters, and higher cutting heat was the main reason of the tool failure. In addition, this study showed that a large fracture of insert corner was the form of final tool failure. Furthermore, the results indicated that TiAlN-coating tool was more suitable for plunge milling TC21 than TiN-coating tool, and abrasive wear and adhesive wear were the main reasons of tool wear. Finally, reasonable parameters of plunge milling TC21 were recommended. Thus, a cutting tool with proper plunge milling parameters and tool materials should be carefully chosen to satisfy the tool life in real production.
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Sun, T., Fu, Yc., He, L. et al. Machinability of plunge milling for damage-tolerant titanium alloy TC21. Int J Adv Manuf Technol 85, 1315–1323 (2016). https://doi.org/10.1007/s00170-015-8022-1
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DOI: https://doi.org/10.1007/s00170-015-8022-1