Assessment Of Surface Integrity During Electrical Discharge Machining Of Titanium Grade 5 Alloys (Ti-6Al-4V)

Kushwaha, Adarsh; Jadam, Thrinadh; Datta, Saurav; Masanta, Manoj

doi:10.1016/j.matpr.2019.07.097

Cited by 10 publications

(15 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The different tool types and grades that are used in conventional machining operations are listed in Table S1 [ 117,[119][120][121][124][125][126][127][128][129][130][131][132]. Although different tool wear mechanisms such as plastic deformation, adhesion and abrasion were mentioned in the preceding paragraphs, crater wear has been reported as the main mechanisms affecting the life span of cutting tools especially at cutting speed of 61-122 m/min [33,88].…”

Section: Exploration Of Cutting Toolsmentioning

confidence: 99%

An overview of conventional and non-conventional techniques for machining of titanium alloys

et al. 2020

View full text Add to dashboard Cite

Machining is one of the major contributors to the high cost of titanium-based components. This is as a result of severe tool wear and high volume of waste generated from the workpiece. Research efforts seeking to reduce the cost of titanium alloys have explored the possibility of either eliminating machining as a processing step or optimising parameters for machining titanium alloys. Since the former is still at the infant stage, this article provides a review on the common machining techniques that were used for processing titanium-based components. These techniques are classified into two major categories based on the type of contact between the titanium workpiece and the tool. The two categories were dubbed conventional and non-conventional machining techniques. Most of the parameters that are associated with these techniques and their corresponding machinability indicators were presented. The common machinability indicators that are covered in this review include surface roughness, cutting forces, tool wear rate, chip formation and material removal rate. However, surface roughness, tool wear rate and metal removal rate were emphasised. The critical or optimum combination of parameters for achieving improved machinability was also highlighted. Some recommendations on future research directions are made.

show abstract

Section: Exploration Of Cutting Toolsmentioning

confidence: 99%

An overview of conventional and non-conventional techniques for machining of titanium alloys

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Установлено, что наибольшее влияние на шероховатость поверхности оказывает величина пикового тока [9], с ее ростом увеличивается значение параметров микрорельефа. В исследованиях [9][10][11] показано, что значения параметров микрорельефа и величины их отклонений становятся больше с ростом пикового тока и длительности импульса. Установлено, что короткий импульс (4-6 мкс) обеспечивает более низкие значения параметров микрорельефа, а давление прокачки и натяжение проволоки не оказывают влияния на точность и качество обработки поверхности [12].…”

unclassified

“…На поверхностях конструкционных материалов, обработанных данным методом, наблюдается налипший шлам, расплавленные кратеры и трещины различного размера [9,10,12]. Явление образования трещин на поверхностях, подвергнутых ЭЭО, характеризуется параметром «плотность поверхностного растрескивания» [11]. В работах [9,11] упоминается об увеличении количества трещин, а также об их расширении при обработке в режиме больших токов и длительных импульсах.…”

unclassified

“…Явление образования трещин на поверхностях, подвергнутых ЭЭО, характеризуется параметром «плотность поверхностного растрескивания» [11]. В работах [9,11] упоминается об увеличении количества трещин, а также об их расширении при обработке в режиме больших токов и длительных импульсах. Вместе с тем сокращение длительности импульса и увеличение пикового тока приводит к уменьшению количества трещин, а также их размеров [9].…”

unclassified

“…Вместе с тем сокращение длительности импульса и увеличение пикового тока приводит к уменьшению количества трещин, а также их размеров [9]. Установлено, что при увеличении длительности импульса «ширина раскрытия трещин» повышается [11].…”

unclassified

See 2 more Smart Citations

Investigation of wire electrical discharge machining modes influences on crack formation and surface layer morphology of the Ti-6Al-2.5Mo-2Cr-0.3Si titanium alloy

Федоров¹,

Polonyankin²,

Блесман³

et al. 2020

OSB

View full text Add to dashboard Cite

Surface texture and integrity of electrical discharged machined titanium alloy

Karmiris-Obratański

Zagórski

Papazoglou

et al. 2020

Int J Adv Manuf Technol

View full text Add to dashboard Cite

Electrical discharge machining (EDM) is a non-conventional machining process, extensively applicable in the modern industry. Owing the non-contact nature of the process, any electrical conductive material can be machined in high quality, regardless its mechanical properties. Titanium alloys are commonly machined by EDM, as difficulties related with their low thermal conductivity and the high chemical reactivity can be overcome. As titanium alloys are utilized in quality demanding applications and industries, high machined surface quality is required, as well surface integrity. The current study presents an experimental investigation of how ED machining parameters affect the MRR, the TWR, and the SQ on machining Titanium Grade 2 by EDM. For pulse current 9/13/17/25A, and pulse on time 25/50/100/200 μs, a full-scale experiment has been carried out, using graphite electrode. The surface texture (ST) has been estimated in terms of arithmetic mean height (Sa), maximum height of scale-limited surface (Sz), and skewness of the scale-limited surface (Ssk), while also measurements of the surface waviness were conducted as well. For all the aforementioned parameters an analysis of variance (ANOVA) has been performed. Finally, the surface topography and integrity were evaluated through optical and SEM microscopy observation, through which the surface cracks and micro-cracks due to high pressure and temperature gradients can be distinguished and characterized.

show abstract

Assessment Of Surface Integrity During Electrical Discharge Machining Of Titanium Grade 5 Alloys (Ti-6Al-4V)

Cited by 10 publications

References 19 publications

An overview of conventional and non-conventional techniques for machining of titanium alloys

An overview of conventional and non-conventional techniques for machining of titanium alloys

Investigation of wire electrical discharge machining modes influences on crack formation and surface layer morphology of the Ti-6Al-2.5Mo-2Cr-0.3Si titanium alloy

Surface texture and integrity of electrical discharged machined titanium alloy

Contact Info

Product

Resources

About