Cavitation Process and the Performance of Some Ferrous and Non-Ferrous Alloys

Abstract

"> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>In this research an extensive literature search into the mechanism of cavitation</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>dynamics and its consequences was conducted. A cavitation venturie rig was designed</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>and constructed, and the cavitation number was checked mathematically. A new</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>camera technique was developed to capture the cavitation cloud. Carbon steel (AISI</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>1020), stainless steel (AISI 304 and 316), ferritic alloy steel (B1274), brass (C27000),</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>phosphor bronze (C51000) and aluminum bronze (C60800) test pieces were prepared</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>and tested in the venturie tube. Aluminum bronze was the most and carbon steel the</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>least resistant of these alloys, the measured mechanical properties could not</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>systematically be correlated with cavitation resistance. The microscopic examinations</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>showed that cavitation induced plastic deformation had caused the misalignment of</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>polishing lines. A field study into the susceptibility of an Iranian sugar cane company's</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>centrifugal pumps showed that deviation from the manuals hydraulic settings caused</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>cavitation and that the gray cast iron had a poor resistance. Besides the venturie tube,</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>other configurations were considered, of which an oil industry choke valve was</em> <span style="font-size: 10pt; color: #000000; font-style: normal; font-variant: normal;"><em>constructed and examined for cavitation.</em></span></span></span></span></span></span></span></span></span></span></span></span></span></span><br style="font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" /></span>