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中文摘要：
双丝旁路耦合电弧高效熔化极气体保护焊是一种新型、高效的焊接方法。针对其在开环条件下焊接过程不稳定、焊缝成形差的问题，提出通过旁路送丝速度控制旁路弧长从而保证焊接过程稳定性、通过控制旁路电流调节流经母材电流的双变量解耦控制方案并进行模拟与分析。在此基础上，采用快速原型控制系统，设计双丝旁路耦合电弧高效熔化极气体保护焊试验系统并进行双变量解耦控制焊接试验。结果表明，双丝旁路耦合电弧高效熔化极气体保护焊双变量解耦控制方案可以有效地保证焊接过程与流经母材电流的稳定，与模拟结果基本一致；并且由于采用解耦算法，控制过程稳定性更好、响应速度更快、精度更高，并得到成形良好的焊缝，焊接过程飞溅也较小。
英文摘要：
A novel and high effective double-electrode gas metal arc welding（DE-GMAW） method has been introduced. Due to the instability and poor formation of DE-GMAW, a new decoupling control plan is put forward. This implementation decoupling control plan controlled the bypass arc by＂ adjusting the bypass feed speed, and controlled the base metal current by adjusting the bypass current. The simulations about this plan are carried out and analyzed. Then, by using rapid prototyping, the welding experiment of decoupling control plan is carried out. The results show that, the decoupling control can steady the welding process and motherboard current; and a better stability, faster response and higher accuracy of the bypass arc control can be gotten. A good weld appearance is also obtained.
同期刊论文项目
同项目期刊论文
Effects of Si and Mg elements on the microstructure of aluminum-steel joints produced by pulsed DE-G
Numerical simulation of temperature field of DE-GMAW and its comparison with experimental measuremen
Effect of joiningparameters on microstructure of dissimilar metal joints between aluminum andgalvani
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