Electron beam micromachining of plastics

0431982 - ÚPT 2015 RIV BG eng J - Článek v odborném periodiku
Dupák, Libor
Electron beam micromachining of plastics.
Elektrotechnica & Elektronica. Roč. 49, 5-6 (2014), s. 310-314. ISSN 0861-4717
Grant CEP: GA MŠMT(CZ) LO1212; GA MŠMT ED0017/01/01; GA MŠMT EE.2.3.20.0103
Institucionální podpora: RVO:68081731
Klíčová slova: micromachining of plastics * Electron beam
Kód oboru RIV: JA - Elektronika a optoelektronika, elektrotechnika

This paper describes some possibilities of using electron beam welder to machine plastics. Several different types were tested including PC, PMMA, PVC, PTFE, PE, POM and PP. For initial study how certain material react to the electron beam, the sets of lines were cut onto the surface. Lines were done by the deflection system by the electron beam with different parameters. The dimensions of the lines (depth, width, ridge height) were measurement. However, that was not always possible due to melted material refilling the grooves. For further study of surface structuring a testing pattern was used. It consisted of 6x10 squares, each 1x1 mm in size. The squares were engraved line by line with pitch of 0.083 mm (i.e. 12 lines/mm). The intensity of the colour of the square determined the speed of the beam movement, thus the melted volume. This way a stepped structure was created. Profile of the engraved structure was measured on the contact profilometer. Depth of the steps ranges from several to hundreds micrometers depending on the beam speed and the plastics.
Trvalý link: http://hdl.handle.net/11104/0236493