【Ten Years of Rapid Development in Chemical Processing Equipment】2209-2025 Intelligent Welding Robot for Double-Sided, Double-Arc Rooting Process Without the Need for Root Cleaning

Thread Content

Give praise and support to the achievements made in China’s chemical engineering technology and equipment; your participation in discussions is the greatest encouragement. **********************【Ten Years of Great Development in Chemical Engineering Equipment】Continuous updates and summaries are available; feel free to join the discussions at https://bbs.hcbbs.com/thread-3576046-1-1.html ***************** On February 14th, reporters learned at the CNOOC Tianjin Intelligent Manufacturing Base in Binhai New Area, Tianjin, that intelligent welding robots with dual-sided and dual-arc functionality are now being used successfully there, enabling intelligent welding in the manufacturing of offshore engineering equipment. This welding robot, which has just started trial production, was developed through collaboration between CNOOC Engineering and research institutions such as Harbin Institute of Technology and Tianjin University. It employs a double-sided dual-arc root-pass welding technique that eliminates the need for root cleaning, effectively addressing the issue of protecting the back side of the weld while also preventing welding deformation. At the same time, this device introduces the roller frame for the first time in robotic intelligent welding, enabling real-time tracking of the weld path and uniform welding in 360° to ensure that the welding remains aligned. It can also adjust parameters dynamically based on the groove shape and material thickness of different pipes, resulting in a smoother weld seam. The main task of this welding robot at CNOOC Engineering’s Tianjin Intelligent Manufacturing Base is the welding and reinforcement of thick plates. It is reported that the reinforced ring plate is a circular ring plate in a hollow format, primarily used inside the columns of the main structure of offshore platforms. Due to the concealed location of the welding area, manual welding previously required the use of mirrors in order to see where welding was taking place. Two experienced welders had to work continuously for 12 hours to complete the welding task, and there are at least 10 such welding sites on conventional offshore oil and gas platforms. Ma Yaguang, manager of the Structural Pipe Fabrication Workshop at CNOOC Engineering’s Tianjin Intelligent Manufacturing Base, said that this equipment is fully capable of handling the tasks; it increases welding efficiency by at least twice compared to manual methods, and it also helps to avoid the safety risks associated with workers working in confined spaces.