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Control Rod Drive Mechanism Inner Diameter Annulus Ultra High Pressure Cavitation Peening
Control Rod Drive Mechanism Inner Diameter Annulus Ultra High Pressure Cavitation Peening
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机译:控制杆驱动机构内径环空超高压空化喷丸
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摘要
A sealing member is provided to create a sealed region about an annulus formed between an inner body, such as a thermal sleeve, and an outer body, such as a control rod drive housing nozzle. Liquid is introduced into the sealed region to create a flooded region, which is pressurized to a desired level. A nozzle is provided into the flooded region, the nozzle being configured to fit within the annulus. Pressurized fluid is ejected from the nozzle, causing the formation of cavitation bubbles. The nozzle flow causes the cavitation bubbles to settle on the surfaces forming the annulus. The collapsing impact of the cavitation bubbles imparts compressive stress in the materials of the surfaces forming the annulus.
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