After the metal has been melted and mixed, an initial pot sample of the lot is then taken for analysis. The sample is prepared on a lathe, then analyzed three times on the spectrograph. This insures there is no separation within the sample. The results are then averaged automatically by the PC which is an integral part of the Spectrolab. The results are then compared to the customer’s specifications and the software program is set up to automatically identify any elements that are not within the specifications.
This same process is performed two more times as the pot is being cast into product. In doing this, we are able to monitor any changes within the lot during the casting process. This is all part of our in process statistical control.