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Abstrakt

The development of industry is determined by the use of modern materials in the production of parts and equipment. In recent years, there has been a significant increase in the use of nickel-based superalloys in the aerospace, energy and space industries. Due to their properties, these alloys belong to the group of materials hard-to-machine with conventional methods. One of the non-conventional manufacturing technologies that allow the machining of geometrically complex parts from nickel-based superalloys is electrical discharge machining. The article presents the results of experimental investigations of the impact of EDM parameters on the surfaces roughness and the material removal rate. Based on the results of empirical research, mathematical models of the EDM process were developed, which allow for the selection of the most favourable processing parameters for the expected values of the surface roughness Sa and the material removal rate.

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Bibliografia

[1] C.P. Mohanty, S.S. Mahapatra, and M.R. Singh. An experimental investigation of machinability of Inconel 718 in electrical discharge machining. Procedia Materials Science, 6:605–611, 2014. doi: 10.1016/j.mspro.2014.07.075.
[2] S. Skoczypiec. Discussion of ultrashort voltage pulses electrochemical micromachining: a review. The International Journal of Advanced Manufacturing Technology, 87(1-4):177–187, 2016. doi: 10.1007/s00170-016-8392-z.
[3] A. Ruszaj, J. Gawlik, and S. Skoczypiec. Electrochemical machining – special equipment and applications in aircraft industry. Management and Production Engineering Review, 7(2):34–41, 2016. doi: 10.1515/mper-2016-0015.
[4] B.K. Sahu, S. Datta, and S.S. Mahapatra. On electro-discharge machining of Inconel 718 super alloys: an experimental investigation. Materials Today: Proceedings, 5(2):4861–4869, 2018. doi: 10.1016/j.matpr.2017.12.062.
[5] L. Li, Z.Y. Li, X.T. Wei, and X. Cheng. Machining characteristics of Inconel 718 by sinking-DM and wire-EDM. Materials and Manufacturing Processes, 30(8):968–973, 2015 doi: 10.1080/10426914.2014.973579.
[6] R. Świercz and D. Oniszczuk-Świercz. Influence of electrical discharge pulse energy on the surface integrity of tool steel 1.2713. Proceedings of the 26th International Conference on Metallurgy and Materials, pages 1450–1455, Brno, Czech Republic, 24–26 May 2017. WOS:000434346900234.
[7] M. Kunieda, B. Lauwers, K.P. Rajurkar, and B.M. Schumacher. Advancing EDM through fundamental insight into the process. CIRP Annals – Manufacturing Technology, 54(2):64–87, 2005. doi: 10.1016/S0007-8506(07)60020-1.
[8] B. Izquierdo, J.A. Sánchez, S. Plaza, I. Pombo, and N. Ortega. A numerical model of the EDM process considering the effect of multiple discharges. International Journal of Machine Tools and Manufacture, 49(3-4):220–229, 2009. doi: 10.1016/j.ijmachtools.2008.11.003.
[9] B. Izquierdo, S. Plaza, J.A. Sánchez, I. Pombo, and N. Ortega. Numerical prediction of heat affected layer in the EDM of aeronautical alloys. Applied Surface Science, 259:780–790, 2012. doi: 10.1016/j.apsusc.2012.07.124.
[10] G. Puthumana. An influence of parameters of micro-electrical discharge machining on wear of tool electrode. Archive of Mechanical Engineering, 64(2):149–163, 2017. doi: 10.1515/meceng- 2017-0009.
[11] A. Żyra, R. Bogucki, and S. Skoczypiec. Austenitic steel surface integrity after EDM in different dielectric liquids. Technical Transactions, 12:231–242, 2017. doi: 10.4467/2353737XCT.17.222.7765.
[12] J. Holmberg, A. Wretland, J. Berglund, and T. Beno. Surface integrity after post processing of EDM processed Inconel 718 shaft. The International Journal of Advanced Manufacturing Technology, 95(5-8):2325–2337, 2018. doi: 10.1007/s00170-017-1342-6.
[13] Z. Chen, J. Moverare, R.L. Peng, and S. Johansson. Surface integrity and fatigue performance of Inconel 718 in wire electrical discharge machining. Procedia CIRP, 45:307–310, 2016. doi: 10.1016/j.procir.2016.02.053.
[14] C. Upadhyay, S. Datta, M. Masanta, and S.S. Mahapatra. An experimental investigation emphasizing surface characteristics of electro-discharge-machined Inconel 601. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 39(8):3051–3066, 2017. doi: 10.1007/s40430-016-0643-2.
[15] D. Oniszczuk-Świercz and R. Świercz. Surface texture after wire electrical discharge machining. Proceedings of the 26th International Conference on Metallurgy and Materials, pages 1400– 1406, Brno, Czech Republic, 24–26 May 2017. WOS:000434346900226.
[16] L. Straka, I. Corný, J. Pitel’, and S. Hašová. Statistical approach to optimize the process parameters of HAZ of tool steel EN X32CrMoV12-28 after die-sinking EDM with SF-Cu electrode. Metals, 7(2):35, 2017. doi: 10.3390/met7020035.
[17] P. Vishnu, N. Santhosh Kumar, and M. Manohar. Performance prediction of electric discharge machining of Inconel-718 using artificial neural network. Materials Today: Proceedings, 5(2):3770–3780, 2018. doi: 10.1016/j.matpr.2017.11.630.
[18] V. Aggarwal, S.S. Khangura, and R.K. Garg. Parametric modeling and optimization for wire electrical discharge machining of Inconel 718 using response surface methodology. The International Journal of Advanced Manufacturing Technology, 79(1-4):31–47, 2015. doi: 10.1007/s00170-015-6797-8.
[19] S. Prabhu and B.K. Vinayagam. Multiresponse optimization of EDM process with nanofluids using TOPSIS method and genetic algorithm. Archive of Mechanical Engineering, 63(1):45–71, 2016. doi: 10.1515/meceng-2016-0003.
[20] Rahul, K. Abhishek, S. Datta, B.B. Biswal, and S.S. Mahapatra. Machining performance optimization for electro-discharge machining of Inconel 601, 625, 718 and 825: an integrated optimization route combining satisfaction function, fuzzy inference system and Taguchi approach. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 39(9):3499–3527, 2017. doi: 10.1007/s40430-016-0659-7.
[21] M. Tanjilul, A. Ahmed, A.S. Kumar, and M. Rahman. A study on EDM debris particle size and flushing mechanism for efficient debris removal in EDM-drilling of Inconel 718. Journal of Materials Processing Technology, 255:263–274, 2018. doi: 10.1016/j.jmatprotec.2017.12.016.
[22] A. Ahmed, A. Fardin, M. Tanjilul, Y.S. Wong, M. Rahman, and A.S. Kumar. A comparative study on the modelling of EDM and hybrid electrical discharge and arc machining considering latent heat and temperature-dependent properties of Inconel 718. The International Journal of Advanced Manufacturing Technology, 94(5-8):2729–2737, 2018. doi: 10.1007/s00170-017-1100-9.
[23] S. Kumar, A.K. Dhingra, and S. Kumar. Parametric optimization of powder mixed electrical discharge machining for nickel-based superalloy inconel-800 using response surface ethodology. Mechanics of Advanced Materials and Modern Processes, 3:7, 2017. doi: 10.1186/s40759-017-0022-4.
[24] G.S. Prihandana, T. Sriani, M. Mahardika, M. Hamdi, N. Miki, Y.S. Wong, and K. Mitsui. Application of powder suspended in dielectric fluid for fine finish micro-EDM of Inconel 718. The International Journal of Advanced Manufacturing Technology, 75(1-4):599–613, 2014. doi: 10.1007/s00170-014-6145-4.
[25] G. Talla, S. Gangopadhyay, and C.K. Biswas. Effect of powder-suspended dielectric on theEDM characteristics of Inconel 625. Journal of Materials Engineering and Performance, 25(2):704– 717, 2016. doi: 10.1007/s11665-015-1835-0.
[26] A. Torres, I. Puertas, and C.J. Luis. EDM machinability and surface roughness analysis of INCONEL 600 using graphite electrodes. The International Journal of Advanced Manufacturing Technology, 84(9-12):2671–2688, 2016. doi: 0.1007/s00170-015-7880-x.
[27] S. Spadło, P. Młynarczyk, and K. Łakomiec. Influence of the of electrical discharge alloying methods on the surface quality of carbon steel. The International Journal of Advanced Manufacturing Technology, 89(5-8):1529–1534, 2017. doi: 10.1007/s00170-016-9168-1.
[28] S. Spadło, J. Kozak, and P. Młynarczyk. Mathematical modelling of the electrical discharge mechanical alloying process. Procedia CIRP, 6:422–426, 2013. doi: 10.1016/j.procir.2013.03.031.
[29] I. Pliszka, N. Radek, and A. Gądek-Moszczak. Properties of WC-Cu electro spark coatings subjected to laser modification. Tribologia, 5:73–79, 2017.
[30] T. Chmielewski, D. Golański, and W. Włosiński. Metallization of ceramic materials based on the kinetic energy of detonation waves. Bulletin of the Polish Academy of Sciences Technical Sciences, 63(2):449–456, 2015. doi: 10.1515/bpasts-2015-0051.
[31] J. Holmberg, A. Wretland, and J. Berglund. Grit blasting for removal of recast layer from EDM process on Inconel 718 shaft: an evaluation of surface integrity. Journal of Materials Engineering and Performance, 25(12):5540–5550, 2016. doi: 10.1007/s11665-016-2406-8.
[32] A. Ruszaj, S. Skoczypiec, and D. Wyszyński. Recent developments in abrasive hybrid manufacturing processes. Management and Production Engineering Review, 8(2):81–90, 2017. doi: 10.1515/mper-2017-0020.
[33] T. Sałaciński, M. Winiarski, T. Chmielewski, and R. Świercz. Surface finishing using ceramic fiber brush tools. Proceedings of the 26th International Conference on Metallurgy and Material, pages 1220–1226, Brno, Czech Republic, 24–26 May 2017. WOS:000434346900195.
[34] R. Świercz and D. Oniszczuk-Świercz. Experimental investigation of surface layer properties of high thermal conductivity tool steel after electrical discharge machining. Metals, 7(12):550, 2017. doi: 10.3390/met7120550.
[35] Douglas C. Montgomery. Design and Analysis of Experiments. 9th edition. Wiley. 2017.
[36] I. Ayesta, B. Izquierdo, J.A. Sánchez, J.M. Ramos, S. Plaza, I. Pombo, N. Ortega, H. Bravo, R. Fradejas, and I. Zamakona. Influence of EDM Parameters on slot machining in C1023 aeronautical alloy. Procedia CIRP, 6:129–134, 2013. doi: 10.1016/j.procir.2013.03.059.
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Autorzy i Afiliacje

Rafał Świercz
1
Dorota Oniszczuk-Świercz
1
Lucjan Dąbrowski
1

  1. Warsaw University of Technology, Institute of Manufacturing Technology, Warsaw, Poland.

Abstrakt

The presented paper reports data from malacological and pedological studies carried out at sites representing diverse biotopes (beech wood, coniferous forest, and meadow) located 2 km away from the Dyckerhoff Cement Plant in Sitkówka-Nowiny in 1992 and in 2008–2009. The studies aimed to determine physicochemical properties of soils exposed to cement and limestone dust emission and to identify composition of snail communities inhabiting three different biotopes in relation to physicochemical properties of soils, and to grasp the dynamics of the alkalization-dependent changes in physicochemical properties of soils and their impact on the composition and ecological structure of malacofauna.

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Autorzy i Afiliacje

Jadwiga Anna Barga-Więcławska
Anna Świercz

Abstrakt

The model predictive control (MPC) technique has been widely applied in a large number of industrial plants. Optimal input design should guarantee acceptable model parameter estimates while still providing for low experimental effort. The goal of this work is to investigate an application-oriented identification experiment that satisfies the performance objectives of the implementation of the model. A- and D-optimal input signal design methods for a non-linear liquid two-tank model are presented in this paper. The excitation signal is obtained using a finite impulse response filter (FIR) with respect to the accepted application degradation and the input power constraint. The MPC controller is then used to control the liquid levels of the double tank system subject to the reference trajectory. The MPC scheme is built based on the linearized and discretized model of the system to predict the system’s succeeding outputs with reference to the future input signal. The novelty of this model-based method consists in including the experiment cost in input design through the objective function. The proposed framework is illustrated by means of numerical examples, and simulation results are discussed.

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Autorzy i Afiliacje

W. Jakowluk
M. Świercz

Abstrakt

New materials require the use of advanced technology in manufacturing parts of complex shape. One of the modern non-conventional technology of manufacturing difficult to cut materials is the wire electrical discharge machining (WEDM). The article presents the results of theoretical and experimental research in the influence of the WEDM conditions and parameters on the shape deviation during a rough cut. A numerical model of the dielectric flow in the gap (ANSYS) was developed. The influence of the dielectric velocity field in the gap on the debris evacuation and stability of WEDM process was discussed. Furthermore, response surface methodology (RSM) was used to build empirical models for influence of the wire speed Vd, wire tension force Fn, the volume flow rate of the dielectric Qv on the flatness deviation after the WEDM.

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Autorzy i Afiliacje

R. Świercz
D. Oniszczuk-Świercz
J. Zawora
M. Marczak

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