Refrigerated cooling air cutting of difficult-to-cut materials

Su, Yongsheng; He, Ning; Li, L.; Iqbal, Asif; Xiao, Maohua; Xu, Shiyi; Qiu, Bo

doi:10.1016/j.ijmachtools.2006.07.005

Cited by 139 publications

(62 citation statements)

References 16 publications

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“…Also, increase in lubricant quantity, increased the tool life and surface roughness for TiCN/Al 2 O 3 /TiN coating, whereas it decreased the tool life and surface roughness slightly for TiN/AlN coated tool. Su et al (2007) used cooled air (at a temperature of -20 0 C) with MQL at a pressure of 6 bar in finish turning of Inconel 718 alloy. Application of cooled air and cooled air with MQL resulted in 78% and 124% improvement respectively in tool life over dry cutting.…”

Section: Mql Assisted Turning Of Steelmentioning

confidence: 99%

Minimum Quantity Lubrication Assisted Turning - An Overview

Upadhyay¹,

Jain²,

Mehta³

2012

Daaam International Scientific Book 2012

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Section: Mql Assisted Turning Of Steelmentioning

confidence: 99%

Minimum Quantity Lubrication Assisted Turning - An Overview

Upadhyay¹,

Jain²,

Mehta³

2012

Daaam International Scientific Book 2012

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“…Lee and Lee [6] had similar realizations during the grinding of steels at −20 • C: a low temperature decreased the forces and tool wear. Su et al [7] found that cooling air at −20 • C improved the results of steel milling regarding the dry machining, both in forces and…”

Section: Introductionmentioning

confidence: 99%

A Multi-Response Optimization of Thrust Forces, Torques, and the Power of Tapping Operations by Cooling Air in Reinforced and Unreinforced Polyamide PA66

2018

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Abstract:The use of cooling air during machining is an environmentally conscious procedure, and its applicability to different processes is a research priority. We studied tapping operations, an important operation in the assembly process, using cooling air with unreinforced polyamide (PA66) and polyamide reinforced with glass fiber (PA66-GF30). These materials are widely used in industry, but their behavior with respect to tapping has not been studied. We analyze the outcomes regarding the thrust force, torque, and power at cutting speeds between 15 and 60 m/min. The experimental tests were executed using cooling air at 22 • C, 2 • C, and −18 • C in dry conditions. The M12 × 1.75 mm taps were high-speed steel, with cobalt as the base material and coatings of TiN and AlCrN. To identify the more influential factors, an analysis of variance was performed, along with multi-response optimization to identify the desirability values. This optimization shows that the optimum for PA66can be found in environments close to 3 • C, while the optimum for PA66-GF30 is found at the minimal temperature studied (−18 • C). Thus, cooling air can be considered an adequate procedure for tapping operations, to increase the sustainability of the manufacturing processes.

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“…Attempts have been made in the past with due focus on surface integrity induced by turning operation of Inconel 718 considering the machining environment. The reported findings state reduction in surface roughness under different machining environments like wet [5,6], MQL [7,8], hybrid machining [9], cooling air and minimum quantity lubrication (CAMQL) [10] and liquid nitrogen (LN2) [11]. Further the beneficial effects of machining environment in inducing lesser tensile or more compressive residual stresses have been also reported for wet [5,6] and cryogenic [12] environments, to mention a few.…”

Section: Introductionmentioning

confidence: 92%

Influence of Machining Environment on Surface Integrity in HSM of Inconel 718 with Productivity Perspective

Kadam

Pawade

2017

Proceedings of the International Conference on Communication and Signal Processing 2016 (ICCASP 2016)

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Abstract:This paper investigates the effect of material removal rate (MRR) and mainly machining environment on resultant surface integrity in high-speed machining (HSM) of Inconel 718. For this high-speed turning is carried out for three different cutting speeds, feedrates and depth of cut under dry, flood coolant and water vapour machining environments. The results show that flood cooling is ineffective in high-speed machining. Water vapours acts as a coolant and lubricant, and hence is highly effective in lowering surface roughness and surface damages in machining. However at very high material removal rates, dry machining seems to be an economical option. Under all the environments the residual stresses were found to be compressive in nature at all MRR levels. Keeping in view green manufacturing, good productivity and better quality, it is suggested that machining of Inconel 718 under water vapour environment is an ideal approach.

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Refrigerated cooling air cutting of difficult-to-cut materials

Cited by 139 publications

References 16 publications

Minimum Quantity Lubrication Assisted Turning - An Overview

Minimum Quantity Lubrication Assisted Turning - An Overview

A Multi-Response Optimization of Thrust Forces, Torques, and the Power of Tapping Operations by Cooling Air in Reinforced and Unreinforced Polyamide PA66

Influence of Machining Environment on Surface Integrity in HSM of Inconel 718 with Productivity Perspective

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