Cooling/Lubrication Performance of Dry and Supercritical CO2-Based Minimum Quantity Lubrication in Peripheral Milling Ti-6Al-4V

Cai, Chongyan; Xu, Liang; An, Qinglong; Tao, Zhengrui; Ming, Weiwei; Chen, Ming

doi:10.1007/s40684-020-00194-7

Cited by 50 publications

(13 citation statements)

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“…[196] with permission from Elsevier. [52,201,206,207] for end-mills. LN 2 is used to circulate in the internal spiral channel of a certain diameter milling cutter, and the milling cutter is maintained in the cryogenic range of −100 °C to −140 °C by phase change heat absorption to transfer the heat in the cutting zone quickly and reduce workpiece temperature.…”

Section: Application Effect Of Cmqlmentioning

confidence: 99%

Cryogenic minimum quantity lubrication machining: from mechanism to application

et al. 2021

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Cutting fluid plays a cooling-lubrication role in the cutting of metal materials. However, the substantial usage of cutting fluid in traditional flood machining seriously pollutes the environment and threatens the health of workers. Environmental machining technologies, such as dry cutting, minimum quantity lubrication (MQL), and cryogenic cooling technology, have been used as substitute for flood machining. However, the insufficient cooling capacity of MQL with normal-temperature compressed gas and the lack of lubricating performance of cryogenic cooling technology limit their industrial application. The technical bottleneck of mechanical—thermal damage of difficult-to-cut materials in aerospace and other fields can be solved by combining cryogenic medium and MQL. The latest progress of cryogenic minimum quantity lubrication (CMQL) technology is reviewed in this paper, and the key scientific issues in the research achievements of CMQL are clarified. First, the application forms and process characteristics of CMQL devices in turning, milling, and grinding are systematically summarized from traditional settings to innovative design. Second, the cooling-lubrication mechanism of CMQL and its influence mechanism on material hardness, cutting force, tool wear, and workpiece surface quality in cutting are extensively revealed. The effects of CMQL are systematically analyzed based on its mechanism and application form. Results show that the application effect of CMQL is better than that of cryogenic technology or MQL alone. Finally, the prospect, which provides basis and support for engineering application and development of CMQL technology, is introduced considering the limitations of CMQL.

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Section: Application Effect Of Cmqlmentioning

confidence: 99%

Cryogenic minimum quantity lubrication machining: from mechanism to application

et al. 2021

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“…There is also the opinion that waviness could be generated by clamping deviations, deviations in the tool or cutter geometry, tool or workpiece vibration, spindle tilt in face milling, the chatter of the tool and workpiece, etc. [14,21]. All the factors mentioned above could exert influence on the sizes that define the profile waviness.…”

Section: Initial Considerationsmentioning

confidence: 99%

“…The researchers highlighted the possibility of diminishing the milling chatter or improving the milling process stability affecting the milling parameters. Cai et al took into consideration the visual aspect of the waviness generated by the cutting tool during peripheral milling of test pieces made of the Ti-6Al-4V alloy when different green environments are used [14]. They have come to the conclusion that the direction of the surface waviness corresponds to the tool axis in a plane perpendicular to the feed direction.…”

Section: Introductionmentioning

confidence: 99%

Metrology and Measurement Systems

Beşliu-Băncescu,

Slătineanu,

Coteaţă

2021

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Waviness is a parameter used to complete information on the machined surface state. There is little scientific and technical information on the influence exerted by the cutting conditions and the workpiece material hardness on the values of some parameters that define the waviness of milled surface. No works have been identified to present such information for dry high-speed face milling applied to hard steel workpieces. A factorial experiment with four independent variables at three variation levels was planned to model the influence of milling speed, feed, cutting depth, and steel hardness on the total heights of the profile and surface waviness for dry high-speed face milling. Mathematical processing of experimental results was used to identify the power type function and empirical mathematical models. These models highlight the direction of variation and the intensity of influence exerted by the considered input factors on the values of two waviness parameters in the case of dry high-speed face milling of samples made of four hard steels. It has been observed that the increase in steel hardness increases the total heights of the profile and surface waviness. In the case of two types of steel, a good correlation was identified between the values of the total profile waviness height and the total surface waviness height, respectively, using the Pearson correlation coefficient.

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“…Therefore, it is important to use cooling/lubrication and choose the correct cooling/lubrication. On the other hand, using conventional coolant has disadvantages such as adversely affecting the operator's health, high cost, difficult waste liquid treatment, and severe environmental pollution [19]. Research has shifted towards new cooling and lubricating fluids to eliminate both the disadvantages of cutting fluids and the problems in dry machining.…”

Section: Introductionmentioning

confidence: 99%

The Design of Mechanisms via Artificial Intelligence

Denizhan¹

2023

Interdisciplinary Studies on Contemporary Research Practices in Engineering in the 21st Century II

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The engineering design is a very comprehensive term and required a number of different disciplines work together. There are many examples of engineering design studies and design of mechanisms is one of them. The design of mechanisms is one of the focused areas by mechanical engineering field and it includes kinematic synthesis, kinematic analysis, kinetics, dynamics, force and optimization of the mechanisms. The mechanisms can be complex; hence, additional help is needed in solution process. At that point, artificial intelligence (AI) of computer science is a really helpful for the mechanical engineers. Artificial intelligence field was found in 1956 and it is applicable to significant parts of the mechanism design. However, mechanical engineers cannot really apply artificial intelligence principles to mechanism design and as a result, design of mechanisms via AI became an interdisciplinary engineering studies between mechanical engineering and computer engineering. In this chapter of the book, mechanism design with artificial intelligence is focused and some sample applications are shown.

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Cooling/Lubrication Performance of Dry and Supercritical CO2-Based Minimum Quantity Lubrication in Peripheral Milling Ti-6Al-4V

Cited by 50 publications

References 29 publications

Cryogenic minimum quantity lubrication machining: from mechanism to application

Cryogenic minimum quantity lubrication machining: from mechanism to application

Metrology and Measurement Systems

The Design of Mechanisms via Artificial Intelligence

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