| Popis: |
Most advanced aluminum products need an excellent inclusion quality to be guaranteed. Ideally, this would require the number, size and composition of inclusions to be determined, which is not easy. While the in-line quantification of the number and size of inclusions is possible and major developments are on-going, it is only recently that in-line inclusion analysis has been suggested feasible. In the last years Laser Induced Breakdown Spectroscopy (LIBS) has been assessed at lab scale and the potential to identify inclusion composition has been shown. The technology had never been tested so far for the production of inclusion critical rolling ingots. In our work, tests have been performed at a production plant in order to assess the operation of a LIBS sensor in an industrial environment during the production of can stock ingots. LiMCA and PoDFA were used along with LIBS. The equipment, though experimental, proved to operate very well. In this paper, LIBS results are presented and compared to the LiMCA and PoDFA data. The achievements and needs for further developments are discussed. |
