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Experimental Study on the Coating Removing Characteristics of High-Pressure Water Jet by Micro Jet Flow
Dayong Ning1, Qibo Wang1, Jinxin Tian1
1National Center for International Research of Subsea Engineering Technology and Equipment, Dalian Maritime University, Dalian 116026, China.
Micromachines
|February 13, 2021
Summary
Coating removal width using water jets is constant when total exposure time is fixed, regardless of traversal speed or repeated impacts. This finding aids in optimizing cleaning disc devices for improved efficiency.
Area of Science:
- Surface Engineering
- Fluid Dynamics
- Mechanical Engineering
Background:
- Effective coating removal is crucial for industrial processes and maintenance.
- Water jet technology offers a potential solution for non-damaging surface cleaning.
- Understanding the influence of cleaning parameters on water jet performance is essential.
Purpose of the Study:
- To analyze the coating removal characteristics of micro water jets.
- To investigate the impact of jet pressure, traversal speed, and impact frequency on removal width.
- To evaluate coating removal efficiency using linear and rotating jet disc configurations.
Main Methods:
- Numerical simulation of fluid dynamics to determine water jet velocity and pressure distribution.
- Experimental design based on simulation results, varying jet pressure, traversal speed, and impact times.
- Measurement of coating removal width as the primary indicator of cleaning capability.
Main Results:
- Coating removal width remained constant when the total water jet exposure time was fixed, irrespective of traversal speed or repeated impacts.
- Analysis of linear water jet movement provided insights into rotating jet disc performance.
- Residual coating was found to be affected by the rotational and moving speeds of the cleaning disc.
Conclusions:
- Water jet coating removal efficiency is primarily dependent on total exposure time, not the rate of application.
- The study provides a basis for optimizing cleaning disc devices by controlling rotational and moving speeds.
- Findings contribute to enhancing the efficiency and effectiveness of water jet-based coating removal technologies.
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