Elimination of striation in laser cutting of mild steelThe work presented in this paper was patent by The University of Manchester Intellectual Property Limited (UMIP), Application No. GB0713260.8 filed 9 July 2007 and Application No. GB0719287.5 filed 2 October 2007.
Sobih, M; Crouse, P L; Li, L; Sobih, M; Laser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, University of Manchester, Sackville Street Building, PO Box 88, Manchester M60 1QD, UK; Crouse, P L; Laser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, University of Manchester, Sackville Street Building, PO Box 88, Manchester M60 1QD, UK; Li, L; Laser Processing Research Centre, School of Mechanical, Aerospace and Civil Engineering, University of Manchester, Sackville Street Building, PO Box 88, Manchester M60 1QD, UK
Журнал:
Journal of Physics D: Applied Physics
Дата:
2007-11-21
Аннотация:
High-power laser cutting is extensively used in many industrial applications. An important weakness of this process is the formation of striations (regular lines down the cut surface), which affect the quality of the surfaces produced. The elimination of striation formation is of considerable importance, since it could open up a variety of novel high-precision applications. This study presents the results of oxygen-assisted laser cutting of EN43 mild steel sheets, using a high-power fibre laser. Striation-free laser cuts are demonstrated for cutting 1 and 2 mm thick mild steel sheets. The optimal operating windows are presented and a mathematical method is proposed to estimate the critical speed at which striation-free cut can be obtained.
1.893Мб