电弧喷涂熔滴雾化效果及其熔滴飞行速率的影响

摘要

The in-flight particle velocity and temperature in arc spraying is largely dependent on the processing parameters, resulting in varying coating properties. In this work, by means of on-line diagnostic system we systematically study the effects of wire diameter, spraying current and nozzle distance on the particle velocity and temperature. Furthermore, the molten particle morphology is directly observed to analyze the effect of wire diameter and spraying current on atomization.%电弧喷涂的工艺参数决定了熔滴的飞行速率和温度，并进而决定了涂层性能。采用在线监测技术，本文系统研究了丝极直径、喷涂电流、喷涂距离对熔滴飞行速率及温度的影响；并进一步采用直观观察的方法观察熔滴形态，分析了丝极直径及喷涂电流对雾化效果的影响。