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为了减少CO2焊飞溅,采用了外加磁场发生装置研究了磁控CO2气体保护焊技术,探讨了外加纵向低频磁场对熔滴过渡频率的作用机理,通过分析试验数据,明确了所需的外加纵向低频磁场参数,并探索熔滴在外加磁场作用下的受力情况.结果表明,一定的外加纵向磁场参数下,熔滴过渡频率显著提高,CO2焊飞溅降低;当激磁电流为2 A、磁场频率为60 Hz时,熔滴过渡频率高,飞溅率低,电弧形态稳定.因此,可以通过外加纵向低频磁场来提高熔滴过渡频率并降低飞溅.
In order to reduce the CO2 welding spatter, a magnetron CO2 gas shielded arc welding technique was studied by using an external magnetic field generator. The mechanism of action of external longitudinal low frequency magnetic field on the droplet transition frequency was discussed. By analyzing the experimental data, the required external longitudinal low frequency The results show that the transition frequency of the droplet increases remarkably and the splash of CO2 welding decreases with a certain applied longitudinal magnetic field parameter. When the exciting current is 2 A, the magnetic field frequency is At 60 Hz, the droplet transition frequency is high, the spatter rate is low, and the arc shape is stable, therefore, it is possible to increase the droplet transition frequency and reduce the spatter by applying a longitudinal low-frequency magnetic field.