Effect of anisotropy and cutting speed on chip morphology of Ti-6Al-4V under high-speed cutting

Shi, Qihang; Pan, Yongzhi; Fu, Xiuli; Zhou, Bin; Zhang, Zewen

doi:10.1007/s00170-021-06754-8

Cited by 6 publications

(3 citation statements)

References 27 publications

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“…It can be clearly seen that the serrated degree at 5mm and 10mm of the optimal parameter array was the largest, the sawtooth generation frequency of the optimal parameter array was similar to that of the wet cutting and far lower than that of dry cutting at 5mm, and it was the lowest at 10mm. The reason was that the excellent cooling and lubrication conditions make the lower temperature of the cutting area, which led to less plastic deformation region and more fracture region, and resulted in high serrated degree and low frequency [41,44]. And the cutting process was relatively stable [45].…”

Section: Oxidation Wearmentioning

confidence: 99%

Study on tool wear mechanism under cryogenic CO2-assisted minimum quantity lubrication technology

Cheng

Qiu

Huang

et al. 2023

Int J Adv Manuf Technol

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Cryogenic CO 2 -assisted minimum quantity lubrication milling technology is a green processing technology with broad application prospects. Aiming at the problem of tool wear in the application of cryogenic CO 2 cooling assisted minimum quantity lubrication in di cult-to-machine materials and the in uence of relevant parameters on tool wear, this study used coated cemented carbide tools to perform milling experiments under cryogenic CO 2 -assisted minimum quantity lubrication technology conditions. The micromorphology of the tool rake face and chip was observed, and the energy spectrum of the tool chip contact area was analyzed. The results showed that reducing CO 2 temperature and increasing the oil ow of minimum quantity lubrication can improve the tool wear. The tool wear mechanisms under cryogenic CO 2 -assisted minimum quantity lubrication were mainly abrasive wear, diffusion wear, and oxidation wear. The chip sawtooth degree of the optimal parameter group was more conducive to chip breaking than that of dry cutting and wet cutting groups. The temperature of the tool-chip contact area is an important factor affecting tool wear, the higher the temperature, the faster the tool wear. At the same time, it is veri ed that cryogenic CO 2 -assisted minimum quantity lubrication technology can replace cutting uid in hard-to-machine materials under certain conditions.

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Section: Oxidation Wearmentioning

confidence: 99%

Study on tool wear mechanism under cryogenic CO2-assisted minimum quantity lubrication technology

Cheng

Qiu

Huang

et al. 2023

Int J Adv Manuf Technol

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“…Let C=ISφμ be the wave drag of the metal plate. Within the period of [0, 2ER/μ], formula (10) can be solved as:…”

Section: Wear Mechanism Analysismentioning

confidence: 99%

“…During highspeed cutting, the tool quality is often threatened by a high cutting temperature, and severe wear. These threats severely restrain the improvement of production efficiency, processing precision, and surface quality of products [6][7][8][9][10]. To guarantee processing quality, the traditional solution is rather conservative: tool replacement.…”

Section: Introductionmentioning

confidence: 99%

Frictional Wear Detection of Hard Alloy Tool Material During High-Speed Cutting

Gao¹,

Shen²,

Lei³

et al. 2021

IJHT

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During high-speed cutting, the tool quality is threatened by a high cutting temperature, and severe wear. Traditionally, these threats are handled by tool replacement, which pushes up the economic cost of production and manufacturing. This paper explores the frictional wear detection of hard alloy tool material during high-speed cutting. Based on the theory of wave motion, the wear process of hard alloy tool material during high-speed cutting was modelled mathematically, and the wear mechanism was analyzed. To reduce the interference of weakly important features, the authors presented a method to analyze the feature importance and an approach to identify the frictional wear of tools, under the high-dimensional small dataset about the monitoring signals of tool material wear. Through experiments, the proposed algorithm was proved feasible in identifying the wear of hard alloy tool material during high-speed cutting. The research provides a theoretical guide for improving the production techniques for cutting of hard alloy material.

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Machinability and chip morphology evolution of hardened stainless steel using liquid nitrogen cryogenic

Wang

Wang²,

Liu³

et al. 2022

Int J Adv Manuf Technol

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The impeller material FV520B hardened stainless steel is a typical difficult-to-machine material. During the cutting process, the force and heat load are large, it is easy to work hardening, the tool fails early, and the chip breaking is difficult, which leads to a series of problems such as low processing efficiency, poor processing quality and high cost. In addition to changing the mechanical properties of materials, low-temperature cooling will also promote forced heat transfer in the cutting area, which is an important development direction for clean cutting in the future. In this paper, the effects of low temperature cooling (18℃~-196℃) on cutting machinability and chip morphology evolution of FV520B were systematically studied from macroscopic and microscopic aspects by setting triaxial milling and orthogonal turning experiments respectively based on low temperature jet formed by mixing liquid nitrogen and compressed air. Explore the influence of different jet temperature on cutting force, cutting vibration, surface roughness and tool life under the conditions of variable cutting speed, variable axial depth and variable feed per tooth; The influence of different jet temperature on chip morphology, chip deformation degree and adiabatic shear zone under variable cutting speed was explored. The analysis of the experimental results shows that: low temperature cutting with liquid nitrogen can significantly improve the machinability of the material FV520B and promote the formation of sawtooth chips. The research in this article lays a practical and theoretical basis for the low-temperature cutting of impeller material FV520B, and provides a potential new process for high-quality, high-efficiency and clean machining of impellers.

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Effect of anisotropy and cutting speed on chip morphology of Ti-6Al-4V under high-speed cutting

Cited by 6 publications

References 27 publications

Study on tool wear mechanism under cryogenic CO2-assisted minimum quantity lubrication technology

Study on tool wear mechanism under cryogenic CO2-assisted minimum quantity lubrication technology

Frictional Wear Detection of Hard Alloy Tool Material During High-Speed Cutting

Machinability and chip morphology evolution of hardened stainless steel using liquid nitrogen cryogenic

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