Method and apparatus for prepping surfaces with a high-frequency forced pulsed waterjet

A method of prepping a surface using a high-frequency forced pulsed waterjet entails 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 vibrat...

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Bibliographische Detailangaben
Hauptverfasser:	Yan, Wenzhuo, Vijay, Mohan M, Tieu, Andrew Hung, Daniels, Bruce R
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL ATOMISING APPARATUS CLEANING CLEANING IN GENERAL CUTTING CUTTING-OUT EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS HAND CUTTING TOOLS MINING MINING OR QUARRYING NOZZLES OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PERFORATING PERFORMING OPERATIONS PREVENTION OF FOULING IN GENERAL PUNCHING SEVERING SEVERING BY MEANS OTHER THAN CUTTING SPRAYING APPARATUS SPRAYING OR ATOMISING IN GENERAL STAMPING-OUT TRANSPORTING
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Beschreibung
Zusammenfassung:	A method of prepping a surface using a high-frequency forced pulsed waterjet entails 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 diameter d and a length L. The forced pulsed waterjet prepares the surface to within a predetermined range of surface roughness. The surface roughness is determined by selecting operating parameters comprising a standoff distance (SD), a traverse velocity V TR of the nozzle, a water pressure P, a water flow rate Q, a length-to-diameter (L/d) ratio, a microtip-to-orifice distance (a), the frequency f, and an amplitude A of the high-frequency signal.