New knowledge about grinding using MQL simultaneous to cooled air and MQL combined to wheel cleaning jet technique

Ribeiro, Fernando Sabino Fonteque; Lopes, José Cláudio; Garcia, Mateus Vinícius; Moraes, Douglas Lyra de; Silva, Andrigo Elisiario da; Sanchez, Luiz Eduardo de Ângelo; Aguiar, Paulo Roberto de; Bianchi, Eduardo Carlos

doi:10.1007/s00170-020-05721-z

Cited by 30 publications

(5 citation statements)

References 54 publications

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“…Therefore, Sanchez et al [95] installed the LCO 2 + MQL system on the grinder to improve cooling-lubricating capability. First, the MQL nozzle sprays micro lubricating oil on the surface of the grinding wheel.…”

Section: Grinding Machiningmentioning

confidence: 99%

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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: Grinding Machiningmentioning

confidence: 99%

“…Schematic of LCO 2 + MQL system in grinding. Reproduced from Ref [95]. with permission from Elsevier.…”

mentioning

confidence: 99%

Cryogenic minimum quantity lubrication machining: from mechanism to application

et al. 2021

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“…Optimization of grinding surface topography is one of the most important challenges in industries in order to reduce chip loading on the grinding wheel surface and at the same time decrease the utilization of grinding coolant lubricant [8][9][10][11][12]. The topography of the GW and the geometry of the grain cutting edges are basic to cutting the parts.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Investigation of the Effects of Dressing and Grinding Parameters on Sustainable Grinding of Inconel 738 Used for Automated Manufacturing

Hadad,

Attarsharghi,

Makarian

et al. 2023

Processes

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The significant effect of the dressing process on the surface of the grinding wheel (GW) and the need to provide an optimal dressing condition are the requirements of reduction machining time and energy consumption in the sustainable grinding process. In this study, for the first time, the results of changes in the parameters of the dressing process and changes in the topography of the grinding surface on the surface roughness of the Inconel 738 have been presented using single-edge and four-edge diamond dressers. The use of minimum quantity lubrication (MQL) and wet condition are other variables in this study to reduce the consumption of cutting fluid and prevent its destructive effects on the environment. The results indicate that the MQL technique increases the grinding performance of Inconel 738 by reducing ground workpiece surface roughness and decreasing the coolant–lubricant consumption comparing to the conventional wet grinding process. Additionally, it has been found from the experimental results that applying a single-edge dresser generates finer topography on the grinding wheel and, consequently, has a better surface finish in the grinding process compared to the multipoint diamond dressing tool with the same dressing and grinding parameters. In other words, increasing the dressing feed rate during dressing of the grinding wheel using a multipoint dresser makes a finer wheel surface topography and as a result decreases the surface roughness of the ground workpiece compared to a single-edge dresser. With multipoint diamond tools, the grinding performance during the life of the dressing tool also tends to remain more consistent, which is a definite advantage in automated production. Therefore, application of a multipoint dresser leads to a reduction in dressing time and increased production capability.

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“…Zhang et al [14] proved that for Ti-6Al-4V material, cold air minimal quantity lubrication (CA-MQL) has a better cooling effect than cold air (CA) and MQL separately by constructing a theoretical model and performing experimental veri cation; the results showed the lowest tangential and normal grinding forces. Lopes et al [15][16][17][18] studied the surface roughness results of CA-MQL versus MQL in the cylindrical grinding of AISI 4340 steel with an alumina grinding wheel.…”

Section: Introductionmentioning

confidence: 99%

CA–MQL grinding of zirconia engineering ceramics under precompressive stress

Zeng

Song

et al. 2023

Int J Adv Manuf Technol

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Engineering ceramics are widely used in aerospace, 3C electronics, life sciences and other elds. However, the hard brittleness of engineering ceramics makes it di cult to process, prone to damage during processing, and di cult to balance processing e ciency and quality. In this paper, the grinding force, surface morphology, subsurface damage, residual stress and roughness values of zirconia ceramics are studied after undergoing cold air minimal quantity lubrication (CA-MQL) and traditional wet lubrication (WET) at multiple grinding depths under 0 MPa, 200 MPa and 400 MPa precompressive stresses. The results show that CA-MQL signi cantly improves the grinding surface quality when the grinding depths are 30 µm and 50 µm compared with WET. The optimized surface roughness of 400 MPa precompressive stress combined with CA-MQL grinding reaches 17.12%. Precompressive stress signi cantly reduces the surface residual compressive stress by up to 32.8%.

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New knowledge about grinding using MQL simultaneous to cooled air and MQL combined to wheel cleaning jet technique

Cited by 30 publications

References 54 publications

Cryogenic minimum quantity lubrication machining: from mechanism to application

Cryogenic minimum quantity lubrication machining: from mechanism to application

An Experimental Investigation of the Effects of Dressing and Grinding Parameters on Sustainable Grinding of Inconel 738 Used for Automated Manufacturing

CA–MQL grinding of zirconia engineering ceramics under precompressive stress

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