摘要
应用水射流除去物体表面漆层是一种先进的退漆工艺。本文考虑在漆膜和基体的真实粘附状态下,建立水射流表面退漆的数值模拟模型,分析了射流速度、射流直径以及射流角度对提高退漆效率的影响,仿真不同清洗角度时退漆所需的射流门限速度。在垂直射流时,模拟得到除去漆膜的门限速度和考虑退漆效率以及经济成本的最佳退漆速度;指出在达到能有效的退去漆膜的射流速度时,射流不会对基体造成损伤;退漆的面积首先随着射流直径的增大而增大,最后增加趋势趋于平缓;模拟得到射流速度一定时的最佳射流角度;同时指出射流角度越小,其门限速度越大;当射流角度小于一定值时,门限速度急剧上升。
Application of high pressure water jet removing the paint is a kind of advanced process.In considering of the adhesion force between the paint and the substrate,a numerical simulation model of high pressure water jet removing the paint was created to simulate the efficiency of removing paint in different water jet velocities,water jet diameters,and water jet angles,and the threshold velocity was simulated at various water jet angles.It is shown that in vertical jet,60 m/s is the threshold velocity,and considering the comprehensive economic cost,85 m/s is the best removing paint velocity.The substrate does not be damaged when the water jet velocities reach the level that could remove the paint effective.With the increasing of water jet diameters,the removed area of the paint is increasing;when the jet diameters reach 2 mm,the area keeps constant;when the jet velocity is 85 m/s,the best water jet angle of removing paint efficiency is 80 degrees.Furthermore,it is concluded that the smaller the jet angle,the bigger the threshold velocity,and the threshold velocity increases sharply when the jet angle is less than 55 degree. ####
出处
《清洗世界》
CAS
2013年第1期10-14,28,共6页
Cleaning World
基金
国家自然科学基金创新团队资助(50921063)
关键词
高压水射流
数值模拟
退漆
效率
high pressure water jet
numerical simulation
removing the paint
efficiency
