摘要
为了研究短路过渡条件下摆动电弧传感信号的特征,在短路过渡数值模型的基础上引入窄坡口焊炬摆动模型,建立了一种窄坡口焊接的数值仿真模型,并对摆动电弧传感的电流信号进行模拟;同时,进行了0~10Hz摆动频率范围内的窄坡口熔化极气体保护焊焊接实验,以采集焊接电压和焊接电流信号.结果表明：实际的焊接电流波形与其数值仿真结果吻合;短路过渡的发生与摆动位置没有明显的对应关系,不宜通过焊接电压来计算焊缝偏差;摆动频率越大,随机发生的短路过渡噪声越容易掩盖摆动位置变化引起的电流特征,在保证跟踪精度的条件下,应尽量选择较小的摆动频率.
To study the signal characteristics of oscillation arc sensor under short-circuit condition, a narrow groove welding mathematical model to simulate the welding current was established by adding a weld- ing torch oscillating model in narrow groove to a short circuiting model. Welding tests were performed within a swing frequency range of 0 to 10 Hz, and the welding current and voltage were collected. The re suits show that the actual welding current waveform coincide with numerical simulation results. There is no apparent correspondence between occurrence of short circuiting transfer and oscillating position. Therefore, it is not suitable to calculate the torch deviation by using the welding voltage. As the oscillation fre quency increases, it is easier for the short circuiting transfer noise to cover the features of welding current caused by torch oscillation position. Therefore, on condition that the optimal swing frequency should ensure accuracy of welding seam tracking, the smallest frequency should be selected.
作者
罗雨
胡胜
周灿丰
张中亮
陈仪平
LUO Yu HUSheng ZHOUCanfeng ZHANG Zhongliang CHEN Yiping(Institution Engineering Research Center of Energy Engineering Advanced Joining Technology, geijing Institute of Petrochemical Technology, Beijing 102617, China College of Electrical and Mechanical Engineering, Beijing University of Chemieal Technology, Beijing 100029, China)
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2016年第10期1535-1539,1544,共6页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金项目(51305037)
北京市属高校创新团队建设提升计划(IDHT20130516)
北京石油化工学院URT项目(2015J00083)资助
关键词
熔化极气体保护焊
窄坡口
短路过渡
摆动电弧传感器
摆动频率
gas metal arc welding （GMAW）
narrow groove
short circuiting transfer
oscillation arc sensor
oscillation frequency
