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Abstract:

The paper presents an example of the application of vibratory machining for castings based on the results of visual testing. The purpose of
the work is to popularize non-destructive testing and vibratory machining as finishing process, especially in the case of cast objects. Visual
testing is one of the obligatory non-destructive tests used for castings and welded joints. The basic requirements concerning the
dimensional accuracy and surface texture of cast components are not met if visible surface flaws are detected. The tested castings, which
had characteristic traces of the casting process, were subjected to vibratory machining. The machining with loose abrasive media in
vibrating containers is aimed at smoothing the surface and reducing or completely removing flashes. To complement the visual testing
were also conducted research on the contact profilometer Taylor Hobson PGI 1200. Particular attention was focused on measuring the
height of flashes and changes in the surface of smoothed details based on BNIF No. 359 touch-visual patterns. Based on the work, it can be
concluded that vibratory machining allows for removal flashes and smoothing of the surface of aluminum alloy cast objects.

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Visual Testing of Castings Defects after Vibratory Machining