Patent ID: 8550873
Filing Date: 2013-10-08
Classification: B05B,B08B,B24C

Abstract:
1. A method of prepping a surface of an underlying substrate using a high-frequency forced pulsed waterjet, which underlying substrate has a thickness, the method comprising: generating a high-frequency signal having a frequency f using a high-frequency signal generator; applying the high-frequency signal to a transducer having a microtip to cause the microtip of the transducer to vibrate to thereby generate a forced pulsed waterjet through an exit orifice of a nozzle having an exit orifice of diameter d and having a cylindrical portion of the exit orifice of length L; and impinging the forced pulsed waterjet upon the surface across a plurality of swaths, in a manner that creates a substantially uniform surface roughness across each of the plurality of swaths, and the collective of the plurality of swaths, which surface roughness extends into, but not through, the thickness of the underlying substrate; wherein the forced pulsed waterjet is operated using a traverse velocity V