August 2019

Special Focus: Valves, Pumps and Turbomachinery

Intensive study on damaged wear rings of centrifugal pumps—Part 2

This article is a continuation of Part 1, which discussed the evaluation of two damaged wear rings from centrifugal pump applications—a stationary (inner) ring and a rotating (outer) ring.

This article is a continuation of Part 1, which discussed the evaluation of two damaged wear rings from centrifugal pump applications—a stationary (inner) ring and a rotating (outer) ring. Pump wear rings are an essential component of most centrifugal pumps. The main functionality of pump wear rings is to reduce the amount of leakage to the atmosphere and to ensure that any damage that occurs is due to process or mechanical errors that affect the wear rings, and not to the pump casing or the impellers. FIG. 13. Sample A, AISI 316L stationary, 100X.   It is important that a specific form of wear called galling is not present in the wear ring sc

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