An Investigation into Machining Characteristics of Commercially Pure Titanium (Grade-2) Using CNC WEDM

Abstract:

Article Preview

Titanium is present in the earth’s crust at a level about 0.6% and is therefore the fourth most abundant structural metal after aluminum, iron, and magnesium. High strength, low density, and excellent corrosion resistance are the main properties that make titanium attractive for a variety of applications. The major application of the material is in the aerospace industry, both in airframes,engine components,steam turbine blades, superconductors, missiles etc. or corrosion resistance, for example marine services, chemical, petrochemical, electronics industry, biomedical instruments etc.In this study, wire electrical discharge machining (WEDM) is adopted in machining of commercially pure titanium (Grade-2). During experiments, parameters such as Pulse on time, Pulse off time, Peak current, Spark Gap set Voltage, Wire Feed and Wire Tension were changed to explore their effect on the cutting rate, gap current and surface roughness of the machined specimens. The ranges of process parameters for the experiments were decided on the basis of literature survey and the pilot experiments conducted using one factor at a time approach(OFTA). It is found that the intensity of the process energy does affect the cutting rate, gap current and surface roughness as well as, the wire speed, wire tension and dielectric fluid pressure not seeming to have much of an influence.

Info:

Periodical:

Edited by:

Jing Wu and Hao Xie

Pages:

56-68

Citation:

A. Kumar et al., "An Investigation into Machining Characteristics of Commercially Pure Titanium (Grade-2) Using CNC WEDM", Applied Mechanics and Materials, Vol. 159, pp. 56-68, 2012

Online since:

March 2012

Export:

Price:

$38.00

[1] S.K. Bhaumik, Divakar, A.K. Singh, Machining Ti-6AI-4V Alloy with AWBN-CBN Composite Tool. Materials & Design. 16(4). (1995). 221-226.

DOI: https://doi.org/10.1016/0261-3069(95)00044-5

[2] A.R. Machado, J. Wallbank, Machining of Titanium and Its Alloys-A Review. Proc Instn Mech Engrs, Part B: Journal of Engineering Manufacture. 204. (1990). 53-60.

[3] H.E. Trucks, Machining Titanium Alloys, Machine and Tool BLUE BOOK, 82(I), 39-41, (1987).

[4] R.R. Boyer, R&D and Applications Developments in the Titanium Industry in the USA. Titanium '95: Science and Technology. (1995). 41-50.

[5] I. Gorynin, Material Science and Ti-Production Problems. Titanium '92: Science and Technology, I, Editors: F. H. Froes and I. L. Caplan, San Diego, California. June 29-July 2. the Minerals, Metals, and Materials Society, (1992). 65-73.

[6] K. Sakai, New Development in Application of Titanium as an Ecological Metal: Non Aerospace Application! Environment and Development. Titanium '92: Science and Technology, 3, Editors: F. H. Froes and 1. L. Caplan, San Diego, California. June 29-July 2. the Minerals, Metals, and Materials Society. (1992).

[7] J.D. Campbell, A Comparison of Fluids Used to Super abrasively Machine a Titanium Alloy. International Gas Turbine and Aero engine Congress and Exposition. ASME Papers. 91-GT-321. Orlando. FL. (1991)USA. 3-6 June.

[8] M.J. Donachie Jr,. Introduction to Titanium and Titanium Alloys. Titanium and Titanium Alloys-Source Book, A Collection of Outstanding Articles from the Technical Literature. 3-9. (1982)American Society for Metals.

[9] F.H. Froes T.L. Yau H.G. Weidinger, Structure and Properties of Nonferrous Alloys, Chapter 8, Titanium, Zirconium, and Hafnium. Materials Science and Technology. A Comprehensive Treatment. VCH Verlagsge-sellschaft mbH and VCH Publishers Inc. (1996).

[10] K.C. Adams, State of the U.S. Titanium Industry. Titanium 1994 Products and Applications Proceedings of the Technical Program from the 1994 International Conference. Titanium Development Association. (1994). 39-44.

[11] D.F. Hasson, C.H. Hamilton, Forward, Editors: D. F. Hasson and C. H. Hamilton, Advanced Processing Methods for Titanium, p. v, the Metallurgical Society of AIME, (1982).

[12] Y.C. Lin, B.H. Yan, Y.S. Chang, Machining characteristics of titanium alloy (Ti–6Al–4V) using a combination process of EDM with USM. Journal of Material Processing Technolology. Vol. 104, (2000). 171–177.

DOI: https://doi.org/10.1016/s0924-0136(00)00539-2

[13] Y.S. Tarng, S.C. Ma, L.K. Chung, Determination of optimal cutting parameters in wire electrical discharge machining. International Journal of Machine Tools and Manufacture. Vol. 35. (1995). 1693-170.

DOI: https://doi.org/10.1016/0890-6955(95)00019-t

[14] A. Hascalyk, and U. Caydas, Experimental study of wire electrical discharge machining of AISI D5 tool steel. Journal of Materials Processing Technology, Vol. 148 (2004) . 362–367.

DOI: https://doi.org/10.1016/j.jmatprotec.2004.02.048

[15] R. Kern, Improving WEDM productivity. Techtips section. EDM Today, (2007) March/April issues.

[16] M. Rozenek, and J. Kozak, Electrical discharge machining characteristics of metal matrix composites. Journal of Materials Processing Technology. Vol. 109. (2001). 367-370.

DOI: https://doi.org/10.1016/s0924-0136(00)00823-2

[17] R. Ramakrishnan,L. Karunamoorthy, Modeling and multi-response optimization of Inconel 718 on machining of CNC WEDM process. Journal of materials processing technology. Vol. 207. (2008). 343–349.

DOI: https://doi.org/10.1016/j.jmatprotec.2008.06.040

[18] K.P. Rajurkar, and W.M. Wang, Thermal modeling and on-line monitoring of wire-EDM. Journal of Materials Processing Technology. Vol. 38. (1993). 417-430.

DOI: https://doi.org/10.1016/0924-0136(93)90214-q

[19] B.H. Yan, H.C. Tsai, F.Y. Huang, L. Chorng, Examination of wire electrical discharge machining of Al2O3p/6061Al composites. International Journal of Machine Tools & Manufacture. Vol. 45. (2005). 251–259.

DOI: https://doi.org/10.1016/j.ijmachtools.2004.08.015

[20] Z.N. Guo, X. Wang, Z.G. Huang, T.M. Yue, Experimental investigation into shaping particle-reinforced material by WEDMHS. Journal of Materials Processing Technology. Vol. 129 (1–3). (2002). 56–59.

DOI: https://doi.org/10.1016/s0924-0136(02)00575-7

[21] Technological Manual of Electronica Sprincut Wire-cut Electrical Discharge Machine.

[22] S.S. Mohapatra, Amar Patnaik, Parametric optimization of wire electrical discharge machining (WEDM) process using taguchi method. Journal of the Brazilian Society of Mechanical Science and Engineering. Vol. 28. (2006). 422-429.

DOI: https://doi.org/10.1590/s1678-58782006000400006

Fetching data from Crossref.
This may take some time to load.