Flushing Strategies for High Performance, Efficient and Environmentally Friendly Cutting

Blau, P.; Busch, Katja; Dix, Martin; Hochmuth, C.; Stoll, Andrea; Wertheim, R.

doi:10.1016/j.procir.2014.07.058

Cited by 19 publications

(6 citation statements)

References 4 publications

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“…But surface roughness at top and bottom increase with very small rate, as coolant pressure increase from 13.5 bar to 20 bar. Thus, coolant of 13.5 bars optimal pressure [5,19] was sufficient to achieve the better surface roughness.…”

Section: Discussion Effects Of Process Parametersmentioning

confidence: 95%

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Effect of Process Parameters on Surface Roughness in HPC Drilling of AISI 1055 Steel

Shete¹,

Sohani²

2020

JMechE

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Data regarding the influence of high-pressure coolant on the performance of drilling process using design of experiment has been limitedly available. This paper presents the effect of higher coolant pressures along with spindle speed, feed rate and peck depth on the surface roughness of hole using Taguchi technique. Experimental set up was developed consisting of specially manufactured high-pressure coolant system and high-pressure adapter assembly attached to vertical machining center. Developed experimental set up has optimized utilization of non-through coolant vertical machining center in a small-scale industry. Experiments were conducted on AISI 1055 steel with TiAIN coated drill on the vertical machining center. Taguchi technique was used for design of experiment and analysis of results. Results revealed that the surface roughness improve till coolant pressure reaches to an optimum value of 13.5 bar and there after it decreases. Coolant pressure and spindle speed was the significant process parameters for the hole surface roughness. Surface roughness at the top of hole was considerably lower than the bottom of hole, under the action of all process parameters. Supply of coolant at high pressure has resulted in lower surface roughness even with large peck depth; which indicate that, manufacturing cost can be reduced with the use of high-pressure coolant in drilling.

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Section: Discussion Effects Of Process Parametersmentioning

confidence: 95%

“…High pressure cooling, cryogenic cooling [1,2] and atomized coolant spray [3,4] are the most focused trends in the manufacturing research [5].Various researchers have studied the high-pressure coolant machining. Lopez de Lacalle et al [6] studied the influence of HPC in drilling of Inconel 718 and Ti6A14V.…”

Section: Introductionmentioning

confidence: 99%

Effect of Process Parameters on Surface Roughness in HPC Drilling of AISI 1055 Steel

Shete¹,

Sohani²

2020

JMechE

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“…LCO2 is stored in pressurized tanks at room temperature, and when released to atmospheric pressure, the sudden drop in pressure makes the fluid change phase to a solid/gas mixture with a temperature of around -78 ºC. On the other hand LN2 is stored in liquid state at -197 ºC at room temperature, therefore, insulated tanks and hoses are required for its storage, which increases the cost of the equipment compared to LCO2 [58].…”

Section: Economic Analysis Of the Prototypementioning

confidence: 99%

A novel indirect cryogenic cooling system for improving surface finish and reducing cutting forces when turning ASTM F-1537 cobalt-chromium alloys

Bogajo

Tangpronprasert

Virulsri

et al. 2020

Int J Adv Manuf Technol

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This paper presents a novel indirect cryogenic cooling system, employing liquid nitrogen (LN2) as a coolant for machining the difficult-to-cut ASTM F-1537 cobalt chromium (CoCr) alloy. The prototype differs from the already existing indirect cooling systems by using a modified cutting insert that allows a larger volume of cryogenic fluid to flow under the cutting zone. For designing the prototype analytical and finite element thermal calculations were performed, this enabled to optimize the heat evacuation of the tool from the rake face without altering the stress distribution on the insert when cutting material. Turning experiments on ASTM F-1537 CoCr alloys were performed under different cutting conditions and employing indirect cryogenic cooling and dry machining, to test the performance of the developed system. The results showed that the new system improved surface roughness by 12%, and cutting forces were also reduced by 12%, when compared to existing indirect cryogenic cooling technique.

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“…The study revealed that high pressure-low flow rate was suitable for machining at a higher speed. Blau et al (2015) investigated different cooling techniques in machining and the study showed that an increase in coolant up to 150 bar of pressure can permit higher cutting speed to obtain improved tool life and chip breaking. Da studied polycrystalline diamond tool performance and concluded that HPC results in improved tool life of about 9 to 21 times that of conventional coolant supply.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous optimization of output parameters in HPC drilling using multi response optimization technique with desirability function approach

Shete

Sohani²

2020

WJE

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Purpose This paper aims to examine an investigation of high-pressure coolant (HPC) drilling process with regard to experimental models of output parameters, effect of input parameters on output parameters and simultaneous optimization of the output parameters. Design/methodology/approach Experimental plan was designed using response surface method and experiments were conducted on HPC drilling set up. Measurements for output parameters were carried out and mathematical models were obtained. Multi response optimization using a composite desirability function approach was used to obtain optimum values of input parameters for simultaneous optimization of output parameters. Findings Optimal value of input parameters for optimization of HPC drilling process were obtained as; coolant pressure: 21 bar, spindle speed: 3,970 rpm, feed rate: 0.084 mm/rev and peck depth: 5.50 mm. The composite desirability obtained is 0.9412, which indicates that the performance of HPC drilling process was significantly optimized. Developed mathematical models of the output parameters accurately represent the entire design space under investigation. Originality/value This is the first study that involves variation of higher coolant pressure and investigation of HPC drilling process using response surface methodology and multi response optimization technique with desirability function.

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Flushing Strategies for High Performance, Efficient and Environmentally Friendly Cutting

Cited by 19 publications

References 4 publications

Effect of Process Parameters on Surface Roughness in HPC Drilling of AISI 1055 Steel

Effect of Process Parameters on Surface Roughness in HPC Drilling of AISI 1055 Steel

A novel indirect cryogenic cooling system for improving surface finish and reducing cutting forces when turning ASTM F-1537 cobalt-chromium alloys

Simultaneous optimization of output parameters in HPC drilling using multi response optimization technique with desirability function approach

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