The Influence of Different Assist Gases on Ductile Cast Iron Cutting by CO₂ Laser

• Autorzy: Meško J. , Nigrovič R. , Zrak A.

Identyfikatory

DOI

10.1515/afe-2017-0139

• Języki publikacji: EN

Abstrakty

EN

This article deals with the technology and principles of the laser cutting of ductile cast iron. The properties of the CO₂ laser beam, input parameters of the laser cutting, assist gases, the interaction of cut material and the stability of cutting process are described. The commonly used material (nodular cast iron - share of about 25% of all castings on the market) and the method of the laser cutting of that material, including the technological parameters that influence the cutting edge, are characterized. Next, the application and use of this method in mechanical engineering practice is described, focusing on fixing and renovation of mechanical components such as removing the inflow gate from castings with the desired quality of the cut, without the further using of the chip machining technology. Experimental samples from the nodular cast iron were created by using different technological parameters of laser cutting. The heat affected zone (HAZ), its width, microstructure and roughness parameter Pt was monitored on the experimental samples (of thickness t = 13 mm). The technological parameters that were varied during the experiments included the type of assist gases (N₂ and O₂), to be more specific the ratio of gases, and the cutting speed, which ranged from 1.6 m/min to 0.32 m/min. Both parameters were changed until the desired properties were achieved.

Słowa kluczowe

EN

ductile cast iron; laser cutting; microstructure parameter; heat affected zone; assist gas

PL

żeliwo sferoidalne; cięcie laserowe; parametr mikrostrukturalny; strefa wpływu ciepła

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2017
• Tom: Vol. 17, iss. 4
• Strony: 109--114
• Opis fizyczny: Bibliogr. 12 poz., rys., tab.

Twórcy

autor

Meško J.

• Department of Technological Engineering, University of Zilina, Univerzitna 1, 010 26 Zilina, Slovakia

autor

Nigrovič R.

• Department of Technological Engineering, University of Zilina, Univerzitna 1, 010 26 Zilina, Slovakia

autor

Zrak A.

• Department of Technological Engineering, University of Zilina, Univerzitna 1, 010 26 Zilina, Slovakia

Bibliografia

• [1] Silvfast, W.T. (2004). Laser Fundamentals, Cambridge University Press, 666p. ISBN 0-521-83345-0.
• [2] Caristan, L.C. (2004). Laser cutting guide for manufacturing. Dearborn, Michigan, USA: Society of Manufacturing Engineers, 452p. ISBN 0-87263-686-0.
• [3] Konar, R., Patek, M. & Zrak, A. (2015). Ultrasonic testing of non-ferrous materials in the foundry industry. Manufacturing Technology: Journal for Science, Research and Production. 15(4), 557-562. ISSN 1213-2489.
• [4] Zrak, A., Konar, R. & Jankejech, P. (2015). Influence of chemical composition in steel on laser cutting stability. Manufacturing Technology: Journal for Science, Research and Production. 15(4), 748-752. ISSN 1213-2489.
• [5] Konar, R., Mician, M. & Hlavaty, I. (2014). Defect detection in pipelines during operation using Magnetic Flux Leakage and Phased Array ultrasonic method. Manufacturing technology, 14(3), 337-341. J.E. Purkyne University, Ústinad Labem. ISSN 1213-2489.
• [6] Mesko, J., Zrak, A., Mulczyk, K. & Tofil, S. (2014). Microstructure analysis of welded joints after laser welding. Manufacturing technology, 14(3), 355-359. 341. J.E. Purkyne University, Ústinad Labem. ISSN 1213-2489.
• [7] Patek, M., Konar, R., Sladek, A. & Radek, N. (2014). Non-destructive testing of split sleeve welds by the ultrasonic TOFD method. Manufacturing technology, 14(3), 355-359. J.E. Purkyne University, Ústinad Labem. ISSN 1213-2489.
• [8] Lago, J., Guagliano, M., Novy, F. & Bokuvka, O. (2016). Influence of laser shock peening surface treatment on fatigue endurance of welded joints from S355 structural steel. Manufacturing technology: journal for science, research and production. 16(1), 154-159. ISSN 1213-2489.
• [9] Radek, N., Bronček, J., Fabian, P., Sladek, A., Radziszewski, L. & Paraska, O. (2016). Laser welding of mild steel. Technológ, Roč. 8(3), 23-28. ISSN 1337-8996.
• [10] Zapoměl, J., Dekýš, V., Ferfecki, P., Sapietová, A., Sága, M. & Žmindák, M. (2015). Identification of Material Damping of a Carbon Composite Bar and Study of Its Effect on Attenuation of Its Transient Lateral Vibrations. International Journal of Applied Mechanics. 7(6), 1550081 (18 pages). DOI: 10.1142/S1758825115500817.
• [11] Danielewski, H., Banak, R. & Domagala, A. (2013) The Experimental Analysis of Striation Pattern Created During Laser Cutting. In: Transcom, Žilina, Slovakia.
• [12] Skocovsky, P., Bokuvka, O., Konecna, R., Tillova, E. (2006) Material training for engineering departments. EDIS vydavateľstvo ŽU, 349s. ISBN 80-8070-593-3.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).