Evaluation of the performance of CBN tools when turning Ti–6Al–4V alloy with high pressure coolant supplies

Ezugwu, E. O.; Silva, R.B. Da; Bonney, J.; Machado, Álisson Rocha

doi:10.1016/j.ijmachtools.2004.11.027

Cited by 208 publications

(65 citation statements)

References 6 publications

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“…This can be related to the effect of the flood coolant and the cutting time during the machining process. According to Ezugwu et al [27] and Ezugwu and Bonney [28], the applied coolant can penetrate the workpiece-cutting tool contacting area, reducing the friction and hence decreasing the temperature at the shear zone. These coolant effects strengthen the flank edge and eradicate the abrasive wear (FW) to a certain extent.…”

Section: Tool Wear and Built-up Edge Investigation Using Scanningmentioning

confidence: 99%

Impacts of Wear and Geometry Response of the Cutting Tool on Machinability of Super Austenitic Stainless Steel

Alabdullah

Polishetty

Littlefair

2016

International Journal of Manufacturing Engineering

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This paper presents a study of tool wear and geometry response when machinability tests were applied under milling operations on the Super Austenitic Stainless Steel alloy AL-6XN. Eight milling trials were executed under two cutting speeds, two feed rates, and two depths of cuts. Cutting edge profile measurements were performed to reveal response of cutting edge geometry to the cutting parameters and wear. A scanning electron microscope (SEM) was used to inspect the cutting edges. Results showed the presence of various types of wear such as adhesion wear and abrasion wear on the tool rake and flank faces. Adhesion wear represents the formation of the built-up edge, crater wear, and chipping, whereas abrasion wear represents flank wear. The commonly formed wear was crater wear. Therefore, the optimum tool life among the executed cutting trails was identified according to minimum length and depth of the crater wear. The profile measurements showed the formation of new geometries for the worn cutting edges due to adhesion and abrasion wear and the cutting parameters. The formation of the built-up edge was observed on the rake face of the cutting tool. The microstructure of the built-up edge was investigated using SEM. The built-up edge was found to have the austenite shear lamellar structure which is identical to the formed shear lamellae of the produced chip.

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Section: Tool Wear and Built-up Edge Investigation Using Scanningmentioning

confidence: 99%

Impacts of Wear and Geometry Response of the Cutting Tool on Machinability of Super Austenitic Stainless Steel

Alabdullah

Polishetty

Littlefair

2016

International Journal of Manufacturing Engineering

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“…But during machining of Ti-6Al-4V the performance of CBN tools in terms of tool life was found to be poor compared to uncoated carbide tools and probably it is due to rapid notching and excessive chipping of the cutting edges (Ezugwu et al, 2005a). Machining of Incol 718 with whisker reinforced ceramic tools gave better performance in terms of tool life under high-pressure coolant supplies compared to conventional coolants (Ezugwu et al, 2005b;Ezugwu and Bonney, 2004).…”

Section: Introductionmentioning

confidence: 96%

Improving tool life using cryogenic cooling

Khan

Musse

2008

Journal of Materials Processing Technology

119

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“…by external processes such as the application of high-pressure coolant during cutting operations (Ezugwua et al, 2005), by the use of enhanced machining techniques such as ultrasonically assisted turning (UAT) (Maurotto et al, 2013) and other hybrid machining techniques (Rahman Rashid et al, 2012a, b) or by internal processes, e. g. by improving the machinability by alloy modification without significant changes to other material properties (Siemers et al, 2007). The improvements based on the first approach are limited.…”

mentioning

confidence: 99%

Analysis of a free machining α+β titanium alloy using conventional and ultrasonically assisted turning

Muhammad

Hussain

Maurotto

et al. 2014

Journal of Materials Processing Technology

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• This is the author's version of a work that was accepted for publication in the Journal of Materials Processing Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication.A definitive version was subsequently pub- enhanced machinability generating short chips during metal cutting, which prevents entanglement with cutting tools improving productivity. To further enhance the machinability of this material, a novel hybrid machining technique called ultrasonically assisted turning (UAT) was used. Experimental investigations were carried out to study the machinability, chip shapes, cutting forces, temperature in the process zone and surface roughness for conventional and ultrasonically assisted turning of both alloys. UAT shows improved machinability with reduced nominal cutting forces, improved surface roughness of the machined workpiece and generation of shorter chips when compared to conventional machining conditions.

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Evaluation of the performance of CBN tools when turning Ti–6Al–4V alloy with high pressure coolant supplies

Cited by 208 publications

References 6 publications

Impacts of Wear and Geometry Response of the Cutting Tool on Machinability of Super Austenitic Stainless Steel

Impacts of Wear and Geometry Response of the Cutting Tool on Machinability of Super Austenitic Stainless Steel

Improving tool life using cryogenic cooling

Analysis of a free machining α+β titanium alloy using conventional and ultrasonically assisted turning

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