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Published on: April 17, 2015
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.
Abstract:
In this paper, coating removal characteristics of water jet by micro jet flow affected by cleaning parameters is analyzed. Numerical simulation of fluid field calculates the velocity and pressure distribution of a water jet impinging on a rigid wall, which is used for design experiments of coating removal affected by jet pressure, traversal speed, and repeated impacting times. The removal width is used as a measure of water jet coating removal capability. Experiment results show that the coating removal width is constant, independent with traversal speed or repeated times when total exposure time of waterjet impingement is fixed. According to results of coating removal by a linear moving water jet, this study also analyzes characteristics of coating removal by rotating jet disc, especially residual coating affected by rotational and moving speed of the cleaning disc. The research is helpful to improve the coating removal efficiency of cleaning disc devices.
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