• CN:11-2187/TH
  • ISSN:0577-6686

›› 2012, Vol. 48 ›› Issue (22): 46-51.

• 论文 • 上一篇    下一篇

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模拟与试验分析

朱明;石玗;王桂龙;黄健康;樊丁   

  1. 兰州理工大学甘肃省有色金属新材料省部共建国家重点实验室;兰州理工大学有色金属合金及加工教育部重点实验室
  • 发布日期:2012-11-20

Simulation Analysis and Decoupling Control of Consumable DE-GMAW

ZHU Ming;SHI Yu;WANG Guilong;HUANG Jiankang;FAN Ding   

  1. State Key Laboratory of Gansu Advanced Non-ferrous Metal Materials, Lanzhou University of Technology Key Laboratory of Non-ferrous Metal Alloys of Ministry of Education, Lanzhou University of Technology
  • Published:2012-11-20

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。

关键词: 电弧, 控制, 模拟, 熔化极气体保护焊, 边缘接触分析, 齿面接触分析, 齿面印痕, 传动误差, 瞬时共轭啮合线

Abstract: 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.

Key words: Control, Gas metal arc welding, Simulation, Welding arc, Contact pattern, Edge tooth contact analysis, instantaneous conjugate contact curve, Transmission errors, Tooth contact analysis

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