摘要
针对普通电弧喷涂和高速电弧喷涂进气压力高、耗能大、噪音高和涂层金属氧化严重的不足,以及针对精细喷涂的要求,采用空气动力学理论模型分析、计算了进气压力、喷管喉部直径、扩张比等参数对喷管出口气流速度分布、气体流量等的影响,结果表明在可以实现气体高速流动的前提下,减小喉部尺寸和降低进气压力是降低压缩空气消耗量的有效途径。在此基础上初步设计了微束流高速电弧喷涂枪的结构。
In order to overcome the shortcomings of the traditional arc spraying and the high velocity arc spraying,such as the high inlet compressed air pressure,high energy consuming,high noise and coating oxidation,etc,a novel micro-flux high velocity arc spraying gun was briefly designed on the base of the gas dynamics model.The effects of the inlet pressure,nozzle throat diameter,nozzle expansion ratio on the nozzle gas velocity profile and nozzle gas flux were investigated.Results show that the reduction of the nozzle throat diameter and the lowering of the inlet gas pressure are effective methods to re-duce the gas flux.The structure of micro-flux high velocity arc spraying gun is designed based on that.
出处
《新技术新工艺》
2010年第8期89-92,共4页
New Technology & New Process
基金
河南省高校创新人才基金资助项目(豫教高[2005]126号)
河南科技大学SRTP项目资助项目(2006017)
关键词
气动模型
节能
微束流高速电弧喷涂
Gas dynamics model
Energy saving
Micro-flux high velocity arc spraying
