Measurement of Cavitation Erosion Using Fragile Material

• Published in: Nihon Kikai Gakkai rombunshuu. B hen Vol. 63; no. 606; pp. 360 - 365
• Main Authors: KIMURA, Takeyoshi, OGAWA, Kazuhiko
• Format: Journal Article
• Language: Japanese; English
• Published: The Japan Society of Mechanical Engineers 01.01.1997
• Subjects: Butterfly Valve; Metals; Pipe flow; Pipelines; Valves (mechanical)
• ISSN: 0387-5016; 1884-8346
• DOI: 10.1299/kikaib.63.360

The purpose of this study is to clarify the effectiveness of sintered metal in cavitation erosion. For measurement of cavitation erosion, a decrease in the test time is desirable because present methods are time-consuming. Accordingly, the use of a fragile material for cavitation erosion experiments is proposed in this study. Sintered metal was chosen as the fragile material and the cavitation erosion experiment was performed using the rotating disk method. It was confirmed that the erosion characteristics of our sintered metal were similar to those of other metals and that the erosion data could be obtained in only one or two hours. The sintered metal was also applied to a pipe wall exposed to cavitation due to a butterfly valve. From the measurement of erosion under the cavitation occurring at maximum noise, it was found that the volume loss was largest at a valve opening of 40∼45 degrees.