磁控电弧传感器对埋弧焊熔宽的影响

摘要

以磁控电弧传感器模型为基础,建立了磁控电弧传感器焊缝跟踪系统的细丝埋弧焊熔宽数学模型.利用该数学模型研究横向交变磁场下焊缝熔宽的变化规律,选取模型中的主要参数进行焊接试验,得到励磁频率和励磁电流对焊缝熔宽影响规律曲线,并将仿真模拟结果与实际焊接试验结果进行比较分析.结果表明,熔宽随励磁电流的增大而增大,随励磁频率的增大而减小;模拟结果和实际焊接试验结果基本吻合,从而验证了所建模型的正确性,为磁控传感器和细丝埋弧焊焊缝跟踪系统的设计和开发提供必要的理论指导.%Based on the magnetic-control arc sensor model,the mathematical model of weld for thin wire submerged arc welding was established to track seam.By using the mathematical model,the variation of weld width at the transverse alternating magnetic field was studied.The influencing curve of excitation frequency and current on weld with was obtained by experiments,and the simulation results and that of experiments were compared.The results showed that the weld width increased with increase of excitation current and decrease of the excitation frequency.The simulation results are basically consistent with the experimental results,which verifies the correctness of the model.The studies will provide the necessary theoretical guidance for the designment and development of the magnetic-control sensor and seam tracking system for thin wire submerged arc welding.