Through-tool minimum quantity lubrication and effect on machinability

Khan, Waleed A.; Hoang, Nghi M.; Tai, Bruce L.; Hung, Wayne

doi:10.1016/j.jmapro.2018.03.047

Cited by 16 publications

(11 citation statements)

References 10 publications

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“…Khan et al [15] simulated through-tool MQL to study the impact of input air pressure on microdroplet sizes, and then investigated the effect of MQL on surface finish and tool wear when micromilling selective laser melted Inconel 718. The authors also included the effect of nozzle surface roughness on airborne drop sizes.…”

Section: Literature Reviewmentioning

confidence: 99%

Characterization and Performance of Minimum Quantity Lubricants in Through-Tool Drilling

Patil

Raval

Bangma³

et al. 2020

IJEMM

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This study characterized airborne microdroplet diameters and size distribution from two commercially available lubricants A and B for internal minimum quantity lubrication (MQL). The effects of air pressure, oil channel size, physical properties of lubricants on the resultant microdroplets and through-tool MQL drilling performance were studied. Airborne microdroplet diameters were highly sensitive to the coolant channel sizes and air pressure. Cluster method was used to divide microdroplets into smaller clusters for comparison. Experimental data show that the average airborne microdroplet of lubricant B was larger than that of lubricant A at different air pressures and channel sizes. The contact angle of lubricant A was at least 10° less than that of lubricant B when depositing on glass or aluminium. High-speed imaging showed the tendency of more viscous lubricant B sticking to the drill tip, and higher pressure and longer time was required to atomize this viscous oil. Built-up-edges were less significant when drilling A380 aluminium with lubricant A. Due to high machinability of A380 aluminium, variation of hole diameter and hole cylindricity were minimal when drilling with different lubricants. Insignificant improvement in hole quality was observed when drilling with excessive amount of MQL lubricants or high concentration of lubricant C in flood coolant.

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Section: Literature Reviewmentioning

confidence: 99%

Characterization and Performance of Minimum Quantity Lubricants in Through-Tool Drilling

Patil

Raval

Bangma³

et al. 2020

IJEMM

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“…Applying MQL with flow in the feeding direction solves these problems. When using MQL at high air pressure above 5.5 bar, a nozzle with rough internal surface breaks the lubricant into smaller droplets and effectively improves tool life of micromilling tools [24]. Effort was made to produce an environmentally friendly cutting fluid while enhancing the cutting fluid performance.…”

Section: Micromillingmentioning

confidence: 99%

Micromachining of Advanced Materials

Hung¹,

Corliss²

2019

Micromachining

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Market needs often require miniaturized products for portability, size/weight reduction while increasing product capacity. Utilizing additive manufacturing to achieve a complex and functional metallic part has attracted considerable interests in both industry and academia. However, the resulted rough surfaces and low tolerances of as-printed parts require additional steps for microstructure modification, physical and mechanical properties enhancement, and improvement of dimensional/form/surface to meet engineering specifications. Micromachining can (i) produce miniature components or microfeatures on a larger component, and (ii) enhance the quality of additively manufactured metallic components. This chapter suggests the necessary requirements for successful micromachining and cites the research studies on micromachining of metallic materials fabricated by either traditional route or additive technique. Micromachining by nontraditional techniques-e.g., ion/electron beam machining-are beyond the scope of this chapter. The chapter is organized as following:

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“…developed new tool for dry machining they concluded that Micro dimples on the rake face of a cutting tool effectively suppress the chip adhesion in dry machining of aluminum alloys [3] performance of the tools with finely crystallized smooth surface diamond coating in dry cutting condition. In the case of drilling of aluminum metal matrix compiosie, excellent anti sticking property of smooth surface diamond coating lead to much longer durability of drills than those with regular rough surface diamond coating in both the dry cutting conditions [4]. A. Devillez et.…”

Section: Introductionmentioning

confidence: 99%

Drilling of Ceramic Reinforced Aluminum Matrix Composite under Dry Condition

Agrawal*,

Patil

2020

IJITEE

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In this study an experimental investigation of effects of cutting parameters on surface roughness during drilling of silicon carbide particulate reinforced aluminium matrix composite material under dry condition was carried out. Cutting speed , feed rate and % SiC in aluminium matrix composites were chosen as cutting parameters. The experimental design adopted for this investigation was the central composite design of response surface methodology. Thirty one readings were taken on VMC machine for dry condition and the surface roughness measured using Mitutoyo surface tester. Surface roughness values for dry condition were lower with 30% SiC reinforced aluminium matrix composites when compared to 10 % and 20 % SiC reinforced aluminium matrix composites . As cutting speed increased Ra & Rz value also increased .% SiC was found most significant factor while drilling aluminium matrix composites.

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Through-tool minimum quantity lubrication and effect on machinability

Cited by 16 publications

References 10 publications

Characterization and Performance of Minimum Quantity Lubricants in Through-Tool Drilling

Characterization and Performance of Minimum Quantity Lubricants in Through-Tool Drilling

Micromachining of Advanced Materials

Drilling of Ceramic Reinforced Aluminum Matrix Composite under Dry Condition

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