New Paper Published on Remote Laser Cutting of Electric Steel

Dr Daniele De Gaetano (AMRC) along with Dr Alexei Winter,  Dr Lloyd Tinkler and Dr Xiao Chen have published a new paper in IEEE Transactions on Magnetics titled "Analysis of Magnetic Degradation and Kerf Surface for NO20 Non-Oriented Electrical Steel Subjected to Remote Laser Cutting".

The abstract for the paper can be found below:

This article investigates process parameters for remote laser cutting of non-grain-orientated silicon iron electrical steel (NO20), targeting a precise and clean lamination surface, acceptable overall cutting time and low degradation of magnetic properties. NO20 is commonly used in rotating electrical machines. Remote laser cutting offers a higher design flexibility with respect to traditional cutting methods such as punching, resulting in higher design freedom. However, incorrect laser settings can result in a strong degradation of material magnetic properties as well as burned lamination surfaces and inaccurate cut profiles. Optimal laser power and scan speed settings are identified by microscopy of partial cuts and by surface inspections of fully cut sample strips. In addition, the magnetic characterisation of sample strips is carried out to identify the optimum idle time between scans. Finally, the optimum parameter set for remote laser cutting investigated within the study is then compared against guillotine and electrical discharge machining (EDM) methods, and found to compare favorably in terms of cut quality and impact on magnetic properties.

DOI: 10.1109/TMAG.2025.3597390

If you have any questions about this research please direct them to d.degaetano@sheffield.ac.uk.