PREDICTION MODELS FOR WEDM THROUGH RESPONSE SURFACE METHODOLOGY (RSM)
Keywords:
Wire cut EDM, Response Surface Methodology, ANOVAAbstract
The hot working applications like pressure die casting tools require many characteristics such as high hardenability, toughness and wear resistance. All these requirements are perfectly fulfilled by H-13 hot die tool steel material. Generally H-13 hot die tool steel cannot be machined using traditional machining process due to its high hardness and strength. It can be machined only by advanced machining processes. In this paper Wire-cut Electric Discharge Machining (WEDM) of H- 13 hot die tool steel is considered for the study. Pulse duration, pulse frequency and wire speed are considered as parameters and their effect on performance measures i.e. metal removal rate (MRR), kerf (K), and surface roughness studied through experimental investigation. Using Response Surface Methodology, considered parameters are optimized for maximum MRR and minimum for kerf and Surface roughness. These parameters are adjusted to improve the performance of WEDM. Analysis o Variance (ANOVA) and F-Test are carried out for the error evaluation. It is found that errors are within limits. Finally Response Surface Methodology is applied to generate a mathematical model for MRR, Surface Roughness, Kerf.
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References
Pathya Rupajati P, Bobby O P Soepangkat, Bambang Pramujati and Kis H C Agustin (2014), "Optimization of Recast Layer Thickness and Surface Roughness in the Wire EDM Process of AISI H13 Tool Steel Using Taguchi and Fuzzy Logic", Applied Mechanics and Materials, Vol. 493, 529-534.
Harvinder Singh et al. (2013), “Experimental Investigation of WEDM Variables on Surface Roughness of AISI H13 steel”, Manufacturing Science and Technology, Horizon publications.
Amit Joshi et al. (2013), “Modelling Surface Finish in WEDM using RSM”, ISSN: 2319 – 3182, Vol.2.
Neeraj Sharma et al. (2013), “Modeling and multi response optimization on WEDM for HSLA by RSM, The International Journal of Advanced Manufacturing Technology Vol.67(9-12), 2269-2281.
Yu Huang et al. (2013), “Optimization of cutting conditions of YG15 on rough and finish cutting in WEDM based on statistical analysis”, The International Journal of Advanced Manufacturing Technology, Vol.69(5-8), 993- 1008.
Parveen Kumar et al. (2013), “A literature review on optimization of input parameters of WEDM (Titanium alloy)”, IJRMEC Vol.3.
Danial Ghodsiyeh et al. (2013), “Review on Current Research Trends in Wire Electrical Discharge Machining (WEDM)”, Indian Journal of Science and Technology Vol.6.
Pandu R Vundavilli et al. (2012), “Parameter Optimization of Wire Electric Discharge Machining Process using GA and PSO”, IEEE-International Conference on Advances in Engineering Science and Management.
