Some Observations on Erosive-Abrasive Wear of Metallic Surfaces in Particular Geometries

Abstract

A study on erosive-abrasive wear of metallic surfaces by solid particles entrained in a liquid is presented for two cases: first, an abrasive jet impinging on a metallic plate, and second, erosion of a two-dimensional bend by a particle suspension flow. To determine the profile and amount of erosion, we combined the mechanics of abrasive suspensions in a liquid flow with a simple model of mass removal. Erosion-abrasion rate is given either in total weight loss from the metallic plate for a given time, or in terms of the profile of wear depth. The theoretical model gave reasonable agreement with experiments for the influence of “free stream velocity” and abrasive size on erosion-abrasion rates. In regards to these erosion-abrasion parameters, present results are compared to existing data in the literature.

Equally important, some aspects of secondary flows in curving passages, such as in pipe bends and safety valves, are discussed. This simple model can be used to predict the distribution and amount of erosive-abrasive wear in industrial equipment.

Presented at the 42nd Annual Meeting in Anaheim, California May 11–14, 1987

Notes

Presented at the 42nd Annual Meeting in Anaheim, California May 11–14, 1987