脉冲微束等离子弧焊电弧的光辐射强度变化规律  

Variation of Optical Radiation Intensity of Pulsed Micro-plasma Arc Welding

作　　者：王昂洋 何建萍[1] 林杨胜蓝 貟垚韬 

机构地区：[1]上海工程技术大学材料工程学院,上海201620

出　　处：《热加工工艺》2016年第15期164-167,163,共5页Hot Working Technology

基　　金：国家自然科学基金资助项目(51275283);上海市科委基础研究重点资助项目(14JC1402700);上海工程技术大学研究生创新项目(E1-0903-15-01057)

摘　　要：为了研究脉冲微束等离子弧焊电弧光辐射强度在不同脉冲参数下的变化规律,采用高速摄影技术采集不同脉冲参数下脉冲微束等离子弧焊电弧的光辐射图像信息,通过光辐射强度的灰度值计算,提取电弧中心轴线上的光辐射强度灰度值分布进行分析。研究结果表明,微束等离子弧焊电弧的中心轴线上光辐射强度的分布呈"双峰状",并且脉冲参数(基值电流、峰值电流、占空比、频率)对电弧中心轴线上的光辐射强度的大小和分布都会产生影响。In order to study the variation of optical radiation intensity of pulsed micro-plasma arc welding with different pulse parameters, arc Images of pulsed current micro-plasma arc welding with different pulse parameters were acquired with high speed photography.Through gray value calculation of optical radiation intensity, the gray value distribution of optical radiation intensity collected along the arc central axis was analyzed. The results show that the distribution curve of the optical radiation intensity of pulsed micro-plasma arc welding along the arc central axis presents double-peak type. And the pulse parameters including base current, peak current, duty ratio,and frequency affect the value and distribution of the radiation intensity along the arc central axis in the pulsed current micro- plasma arc welding.

关 键 词：微束等离子弧焊 光辐射强度分布 脉冲电流 

分 类 号：TG456.2[金属学及工艺—焊接]