H1Cr24Ni13焊丝的机器人脉冲MAG焊接稳定性  

Welding Processing Stability of Filler Wire in Robotic Pulse MAG Welding

作　　者：沈显峰[1] 陈金明[1] 黄文荣[1] 

机构地区：[1]中国工程物理研究院机械制造工艺研究所,绵阳621900

出　　处：《上海交通大学学报》2010年第S1期134-137,141,共5页Journal of Shanghai Jiaotong University

基　　金：总装备部装备技术基础项目(BZ1.006)

摘　　要：采用汉诺威质量分析仪对3种焊丝平板堆焊试验的电参数进行了监测,得到了焊接电压、电流等电弧物理特性参数及其概率密度分布图,以及熔滴的短路时间T1的频数分布图等统计数据,并分析了与焊接质量稳定性之间的关系.X射线探伤结果验证了焊丝稳定性分析结果的正确性.研究结果表明,与不锈钢普通弧焊的电弧电压概率分布图呈双峰分布不同,脉冲MAG焊接呈三峰或四峰分布,脉冲弧焊的电流概率分布呈马鞍形特征分布.不同焊丝、同种焊丝在不同规范下有不同的电弧物理特性,应匹配最佳工作参数点以提高焊接稳定性.Poor stability of robot MAG welding is one of the key factors which causes increased production costs and postponed schedule.Of the factors which affect the welding quality of stability,the filler wire is a crucial one.Comparative tests of Bead-on-plate buildup samples were performed with 3 kinds of filler wires in which ANALYSER HANNOVER was employed to monitor the welding electrical parameters and its statistical parameters including Probability Density Distributions(PDD) for welding voltage and welding current,and Class Frequency Distributions(CFD) for short-circuit time T_1.The welding processing stability of different wires was analyzed by using collected data,which was verified by X-ray testing results.The testing results showed that PDD of welding voltage in pulse MAG welding was characterized by trimodal or four-peak distribution,and CFD of welding current in pulse welding was featured by saddle-shaped distribution significantly different from the statistical parameters in common arc welding.Different wires or the same wire with different welding specifications having different welding electrical parameters,therefore,had to match the optimized welding parameters to improve the welding stability.

关 键 词：工业机器人 焊接稳定性 不锈钢焊丝 机器人脉冲MAG焊 焊接电参数 

分 类 号：TP242.2[自动化与计算机技术—检测技术与自动化装置]