Development of automatic submerged arc welding equipment with digital control

作者：Huang, Shi-Sheng^*; He, Kuan-Fang; Sun, De-Yi; Li, Peng

来源：Journal of South China University of Technology(Natural Science Edition), 2008, 36(8): 69-74.

• Automatic submerged arc welding
• Digital control technology
• Double closed-loop control
• Dual core processors
• External characteristic
• Fuzzy control strategy
• Serial communications
• Welding stability

In order to implement the automatic and intellectualized operation of submerged arc welding, a digital device is developed by combining the digital control technology, the fuzzy control strategy and the power modulation technology. Then, based on the analysis of the technological requirements of submerged arc welding, the double closed-loop control mode and the limitation of the minimum pulsed width are introduced to realize the external characteristics suitable for the submerged arc welding with outer-drawing current. Moreover, a controller with a dual-core processor is designed for the automatic submerged arc welding. In this controller, 80C320 and 80C552 single-chips are respectively used to control the external characteristics of the power source and the welding process via the logic control strategy, and the data are exchanged via the serial communication of RS-485. Experimental results show that the developed digital device is of operational convenience, running credibility, welding stability, high ignition rate and excellent molding effect.

• 出版日期2008-8
• 单位华南理工大学