Optimization of Dimensional Accuracy of Mold Steel in Wire Cut Process Based on Response Surface Method

Document Type : Original Article

Authors

1 Faculty of Engineering, Ilam University, Ilam, Iran

2 Department of mechanical engineering, Ilam university, Ilam, Iran

3 Faculty of Energy, Kermanshah University of Technology, Kermanshah, Iran

Abstract

One of the industrial parts that requires very high manufacturing accuracy is industrial molds and especially cutting molds. In these molds, the clearance of the dies is equal to 0.1 of the thickness of the sheet, so the accuracy of making these molds is very important. Today, the wirecut process is widely used in making these molds. In the process, due to the lack of contact between the tool and the work piece, there is no mechanical tension and the produced parts have high precision. Nevertheless, in order to achieve the high precision required in the production of cutting molds, various methods are used. In this research, using the response surface method, the dimensional accuracy value has been investigated based on three parameters of wire speed, wire tension and generator power for Mo40 steel workpiece. Based on this method, at first, the importance of each parameter on dimensional accuracy was determined. Then, by deriving the equation according to the conducted tests, the optimal value of dimensional accuracy was extracted based on the mentioned parameters. The results showed that for tension values of 1.3485 kg, wire speed of 10 cm/s and power of 46.7677%, the accuracy value reaches its maximum value. Finally, these values were experimentally tested and a 0.2% error was recorded. Therefore, by using the method of the response procedure, the amount of dimensional accuracy can be used in the wirecut process of industrial steel molds.

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Main Subjects


  1. Kumar, V. Kumar and J. Kumar, “Multi-response optimization of process parameters based on response surface methodology for pure titanium using WEDM process”, Advanced Manufacturing Technology, vol. 68, pp. 2645-2668, (2013).
  2. Liu, Q. Zhang, M. Zhang and J. Zhang, “Review of size effects in micro electrical discharge machining”, Precision Engineering, vol. 44, pp. 29-40, (2016). 
  3. Hourmand, A.A. Sarhan and M.Y. Noordin, “Development of new fabrication and measurement techniques of micro-electrodes with high aspect ratio for micro EDM using typical EDM machine”, Measurement, vol. 97, pp. 64-78, (2017).
  4. C. Chen and J. Cox, “Taguchi-based optimization of surface roughness and dimensional accuracy in wire EDM process with S7 heat treated steel”, Materials and Metallurgical Engineering, vol. 11, no. 8, Pp. 568-573, (2017).
  5. M. Abbas, D.G. Solomon and M.F. Bahari, “A review on current research trends in electrical discharge machining (EDM)”, machine tools and Manufacture, vol. 47, pp. 1214-1228, (2007).
  6. Banu and M.Y. Ali, “Electrical discharge machining (EDM): a review”, Engineering Materials and Manufacture, vol. 1, pp. 3-10, (2016).
  7. Chalisgaonkar and J. Kumar, , “Multi-response optimization and modeling of trim cut WEDM operation of commercially pure titanium (CPTi) considering multiple user's preferences”, Engineering Science and Technology, an International Journal, vol. 18, pp. 125-134, (2015).
  8. H. Guu and H. Hocheng, “Improvement of fatigue life of electrical discharge machined AISI D2 tool steel by TiN coating”, Materials Science and Engineering: A, vol. 318, pp. 155-162, (2001).
  9. Jeelani, and M.R. Collins, “Effect of electric discharge machining on the fatigue life of Inconel 718”, International journal of fatigue, vol. 10, no. 2, pp. 121-125, (1988).
  10. A. Zeid, “On the effect of electrodischarge machining parameters on the fatigue life of AISI D6 tool steel”, Materials Processing Technology, vol. 68, pp. 27-32, (1997).
  11. Ramulu, G. Paul and J. Patel, “EDM surface effects on the fatigue strength of a 15 vol% SiCp/Al metal matrix composite material”, Composite structures, vol. 54, no. 1, pp. 79-86, (2001).
  12. Nair, A. Pramanik, A.K. Basak, C. Prakash, S. Debnath, S. Shankar and A.R. Dixit, “Experimental investigation on material removal rate, kerf width, surface roughness and the dimensional accuracy the accuracy of hole in Inconel 718 using wire electric discharge”, Process Mechanical Engineering, vol. 1, (2022).
  13. Zahoor, H.A. Azam, M.P. Mughal, N. Ahmed, M. Rehman and A. Hussain, “WEDM of complex profile of IN718: multi-objective GA-based optimization of surface roughness, dimensional deviation, and cutting speed”, Advanced Manufacturing Technology, vol. 114, pp. 2289-2307, (2021).
  14. B. Manjunatha, H.V. Ravindra and N. Kuruvila, “ESTIMATION OF SURFACE ROUGHNESS AND DIMENSIONAL ACCURACY USING PROCESS PARAMETERS IN WIRE CUT EDM BY ARTIFICIAL NEURAL NETWORK”, International of symposium on measurement and quality control, vol. 1, (2007).
  15. Kanlayasiri and P. Jattakul, “Simultaneous optimization of dimensional accuracy and surface roughness for finishing cut of wire-EDM ed K460 tool steel”, Precision engineering, vol. 37, no. 3, pp. 556-561, (2013).
  16. Y. Ali, A. Banu, M. Salehan, E.Y. Adesta, M. Hazza and M. Shaffiq, “Dimensional accuracy in dry micro wire electrical discharge machining”, Mechanical Engineering and Sciences, vol. 12, no. 1, pp. 3321-3329, (2018).
  17. Chaudhary, A.N. Siddiquee, A.K. Chanda, S. Ahmad, I.A. Badruddin and Z.A. Khan, “Multiple Response Optimization of Dimensional Accuracy of Nimonic Alloy Miniature Gear Machined on Wire Edm Using Entropy Topsis Andpareto Anova”, Computer Modeling in Engineering & Sciences, vol. 126, no. 1, pp. 241-259, (2021).
  18. Chakraborty, S. Mitra and D. Bose, “Optimisation of machining performance in PMWEDM of titanium alloy using the hybrid technique (GRA-PCA)”, Advances in Materials and Processing Technologies, vol. 1, no. 2, pp. 1-14, (2020).
  19. Abyar Firouzabadi, J. Parvizian and A. Abdullah, “Improving accuracy of curved corners in wire EDM successive cutting”, The International Journal of Advanced Manufacturing Technology, vol. 76, pp. 447-459, (2015).
  20. N. Islam, N.H. Rafai and S.S. Subramanian, “An investigation into dimensional accuracy achievable in wire-cut electrical discharge machining”, Proceedings of the world congress on Engineering, vol. 3, pp. 2476-2481, (2010).
  21. Sudhakara and G. Prasanthi, “Optimization of dimensional deviation: wire cut EDM of vanadis-4e (powder metallurgical coldworked tool steel) by Taguchi method”, Proceedings of 5th International and 26th All India Manufacturing Technology, Design and Research Conference (AIMTDR), IIT Guwahati, Assam, India, December 12–14, (2014).
  22. Sharma, R. Khanna, R.D. Gupta and R. Sharma, “Modeling and multiresponse optimization on WEDM for HSLA by RSM”, The International Journal of Advanced Manufacturing Technology, vol. 67, pp. 2269-2281, (2013).
  23. Arya and H. Singh, “Optimization of Wire-cut EDM process parameters using TLBO algorithm”, Engineering Research Express, vol. 4, no. 3, pp. 035051, (2022).
  24. Ghasempour-Mouziraji, M. Hosseinzadeh, H. Hajimiri, M. Najafizadeh and E. Marzban Shirkharkolaei, “Machine learning-based optimization of geometrical accuracy in wire cut drilling”, The International Journal of Advanced Manufacturing Technology, vol. 123, no. 11, pp. 4265-4276, (2022).
  25. P. Garg, A. Jain and G. Bhushan, “Multi-objective optimization of process parameters in wire electric discharge machining of Ti-6-2-4-2 alloy”, Arabian Journal for Science and Engineering, vol. 39, pp. 1465-1476, (2014).
  26. Abyar Firouzabadi, A. Abdullah, J. Parvizian and A. Fadai Tehrani, “Investigating the accuracy of machining corners in wirecut and determining the relationship between the error of the corner radius and the thickness of the remaining load”, The 11th conference of manufacturing and production engineering, Iran, October 19-21, (2010). (In Persian)
  27. Rezaei Ashtiani, H. Khoshkish and R. Narimani, “Investigating the dimensional accuracy of the part and tool wear in EDM using different types of tool electrodes”, The 12th annual (international) conference of mechanical engineering, Iran, May, (2006). (In Persian)
  28. Qureshi, V. Tahmasabi, S. Hakak Zargar, “Optimization of machining parameters on surface quality and dimensional accuracy of the hole in micro-drilling process of rice alloy by response surface method”, The 12th conference of manufacturing and production engineering, Iran, December 29-30, (2011). (In Persian)
  29. Rezaei Ashtiani and H. Bisadi, “Investigating the effect of cross-sectional area of spark energy distribution on the dimensional accuracy of electrical discharge machining (EDM)”, The 9th Manufacturing and Production Engineering Conference, Iran, February, (2010). (In Persian)
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