Measurement and Validation for Electron Beam Melting
Ladda ner
Typ
Examensarbete för masterexamen
Master Thesis
Master Thesis
Program
Wireless, photonics and space engineering (MPWPS), MSc
Publicerad
2018
Författare
Malm, Calle
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
Magnetic lenses are crucial components in the electron beam melting process used for 3d-printing at Arcam. Validating that the lenses going into machine production are within specification is important. Therefore, this thesis has modified and confirmed a measurement setup, the field mapper, to be used for measurement and validation of magnetic lenses. The field mapper was then used to investigate normal behaviour of the focus and deflection lenses going into machine production as well as recreating defects of faulty lenses of the deflection and astigmatism lens to ascertain if machine integrity is compromised for respective defect. The focus lens revealed a non-significant spread, the deflection lens presented a wider spread that is easily compensated for in the machine calibration process, and for the comparison between an astigmatism lens to the same lens with an introduced winding error a significant change in the centre of zero-field was seen.
Beskrivning
Ämne/nyckelord
Atom- och molekylfysik och optik , Annan fysik , Atom and Molecular Physics and Optics , Other Physics Topics