Lyubomir Lazov, Hristina Deneva, Erika Teirumnieka

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Last modified: 01.06.2017


Some researches about influence of defocus position to carry out laser cutting technological process through melting when producing lamellae for electric motors are presented here. Experimental series at defocus position Δf in the range – 3, 5 mm to + 3, 5 mm with two grade electrical steels M250-35A and M530-50A are described, too. The experiments are performed with a technological laser system TruLaser 1030. Functional dependencies of cutting width from defocus position b = b (Δf) have been shown. Theoretical relationships connected to the change of impact on a unit of area working spot over power density qs of the laser radiation and interaction time tproz(respectively cutting speed v), are examined too.


laser cutting; sheet steel; laser focusing


[1]     Grigoryants, A. G., Osnovy lazernoy obrabotki materialov. M., Mashinostroyeniye,  ISBN: 5-217-00432-0, 1989, 301s.

[2]     Grigoryants A., I. Shiganov, A. Misyurov Tekhnologicheskiye protsessy lazernoy obrabotki, izd. MGTU im. N. Baumana, Moskva, ISBN 5-7038-2701-9, 2006.

[3]     Schuöker, D. Dynamic Phenomena in Laser Cutting and Cut Quality. Applied Physics, 1986, B 40, pp. 9 -14.

[4]     Schuöcker, D. Handbook of the EuroLaser Academy, Chapman&Hall, London, 1998, ISBN 0412819201.

[5]     Veyko, V. P. Tekhnologicheskiye lazery i lazernoye izlucheniye. Sankt-Peterburg, ITMO, 2007, 52 s.

[6]     VDI-Technologiezentrum Physikalische Technologien: „Präzise Optische Behandlung von Festkörpern - Oberflächenbearbeitung“ (Handbuchreihe: Laser in der Materialbearbeitung, Bd. 5) VDI-Verlag GmbH, Düsseldorf, 1996

[7]     Florian Scherm Lasermaterialbearbeitung, VL_Lasermaterialbearbeitung_WS0910.pdf, powerpoint presentation- Folie 35 (35 pp);


[9]     Deneva, H., Izsledvane na procesa lazerno rqzane na lameli za rotorni I statorni paketi. Dissertation, TU – Gabrovo, 2014.

[10]  Lazov, L., H. Deneva. Investigation of Cutting Width from Laser Power and Velocity. IJETCAS, Issue 4, Vol 1, 2 & 3, March – May, 2013, ISSN 2279-0047.

[11]  Lazov, L., H. Deneva. Investigation on the Influence of the Process Parameters Power and Velocity to Laser Cutting of Lamellae. Journal of the Technical University - Sofia, Plovdiv branch, Bulgaria, Fundamental Sciences and Applications, Vol. 21, Book 2, 2015, ISSN 1310-8271.

[12] Bass, P. Clements, and R. Kazman. Software Architecture in Practice, 2nd ed. Reading, MA: Addison Wesley, 2003. [E-book] Available: Safari e-book.

ERDF co-funded project "Funding of international projects in research and innovation at Rezekne Academy of Technologies" No.