Effects of nozzle inner surface wear on the rock-breaking ability of premixed abrasive water jets

IF 4.6 2区工程技术 Q1 ENGINEERING, CIVIL

Ocean Engineering Pub Date : 2025-02-05 DOI:10.1016/j.oceaneng.2025.120548

Xiaotian Wang, Zhaolong Ge, Qinglin Deng, Zhi Yao, Yuhuai Cui, Binbin Ge

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引用次数: 0

Abstract

Premixed abrasive water jets are widely used due to their erosive capabilities. This study investigates the effect of conical convergent nozzles with different wear degrees on rock-breaking ability from the aspects of erosive intensity and efficiency. Seven tungsten steel conical nozzles used to impact granite after varying abrasion times (0 to 180 mins) under a jet pressure of 15 MPa. Erosion characteristics, specific energy consumption, and macroscopic morphology of the eroded specimens were measured. Results show that the nozzle’s transition section wears most within the first hour, causing a 49.4% increase in the nozzle diameter and 40.1% increase in jet depth. After 60 mins, wear in the straight and outlet sections results in smaller increases in the nozzle diameter (8.9% and 7.8%, respectively) and a 27.6% decrease in erosion depth. Energy consumption in these sections is over five times greater than in the transition section and 60–90 mins is the optimal wear period for the nozzle.

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来源期刊

Ocean Engineering 工程技术-工程：大洋

CiteScore

7.30

自引率

34.00%

发文量

2379

审稿时长

8.1 months

期刊介绍： Ocean Engineering provides a medium for the publication of original research and development work in the field of ocean engineering. Ocean Engineering seeks papers in the following topics.