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SEG Promotes the Use of Automatic Welding Technology at Sinopec Refining & Chemicals 2018-12-06 Source: Sinopec News Network. The year 2019 was a period of intensive installation work for the projects at Sinopec Refining & Chemicals, and the welding of process pipelines was a key aspect of this installation process. In order to improve the quality, speed, and efficiency of welding process pipelines, SEG, which is responsible for the construction of these projects, took proactive measures by starting to promote the use of automatic welding technology in advance. On November 29, SEG organized a meeting on the exchange and application of automatic welding technology at the Zhongke site. 36 leaders and experts from SEG’s headquarters as well as its subsidiary companies—Luoyang Engineering, Engineering Construction, Shanghai Engineering, Ningbo Engineering, Nanjing Engineering—and the Fourth, Fifth, and Tenth Construction Companies attended this meeting. At the meeting, reports were first presented by the various SEG subsidiaries working on the Zhongke project, covering matters such as the volume of pipeline work to be undertaken for this project, the construction of pipeline processing plants, and the plans for implementing automatic welding techniques in the Zhongke project ; Then, reports were presented by the technical leaders or experts from various SEG subsidiaries on their experiences in innovation, research and development, and application of full-automatic welding technologies ; At the meeting, they provided a detailed overview of the company’s achievements in the innovation, research, and application of automatic welding technologies over the past few years. This included information on the progress in research related to automatic welding technologies, their status of adoption, as well as plans for future research and development. Examples included trackless, all-position crawling welding robots that can be used for welding storage tanks, multi-joint welding robots for the mass production of pipe supports, And technologies for automatic welding at the rotating ends of pipes and at their fixed ends. The leading experts present held in-depth and detailed discussions on new automatic welding technologies, processes, equipment, and materials, as well as on how to implement these technologies at the Sinopec refining project site in the future and what welding technology barriers still need to be overcome. All agreed that this meeting was held at an opportune time and was a success; through discussions and exchanges, the strengths of various perspectives were taken into account, which further enhanced understanding of the promotion and application of automatic welding techniques. This plays a significant role in improving the efficiency of pipeline welding, as well as ensuring the safety, quality, and stability of pipeline construction processes and boosting production efficiency. The meeting achieved its intended objectives. The meeting called on all participating units to raise their awareness of the importance of promoting the use of automatic welding to a new level. They were urged to make efforts in establishing automated production lines in pipeline processing plants, investing in automatic welding equipment, and providing technical training for welders. Additionally, continued research and development of new automatic welding technologies are necessary, so that such technologies can play a greater role and contribute more effectively to the construction of the Sinopec Refining and Chemical Project as well as to efforts to achieve excellence in engineering projects. (Gao Mingliang)
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Trackless omnidirectional crawl welding robot
On December 1, 2018, the first weld of tank TK801 in the EO/EG unit was actually welded at the prefabrication plant of the Zhongke project of Wujian Company. Welding was carried out on a weld that was 1.5 m long on a storage tank steel plate with a thickness of 6 mm. During the entire welding process, it took 20 minutes to complete the root pass of the weld, and 14 minutes for the fill and cap passes. The welded joint had a smooth transition with the base material, the weld surface had an excellent appearance, and the area around the weld was clean and tidy. On December 4, the EO/EG unit TK801 tank, welded by a trackless full-position crawling welding robot, underwent third-party RT sampling inspections, with a pass rate of 100%.
The trackless all-position crawling welding robot uses laser scanning for guidance, automatically identifying the weld position and determining the welding path. Suitable for welding welds of various shapes. Furthermore, this welding robot is compact in size, making it suitable for working in confined spaces; it frees up labor forces and eliminates uncertain hazards as well as the damage to welders’ health caused by the arc light from close-range welding.
This is excellent; I look forward to using it extensively in the future. I am more concerned about when small welding robots for fixing welds on pipelines at the site can become widely available.
Robot welding isn’t yet widespread, is it?
Automatic welding does not necessarily mean robot welding. Geely’s welding workshop is a good example of this: from logistics to assembly to electric welding, various robots are used at every stage, enabling operations on a ‘dark factory’ level
Everyone in the engineering field is concerned about this. Automatic welding is now being widely adopted in the prefabrication of pipelines, especially for welding at the installation points. Some companies are researching this technology, but the requirements regarding its compatibility with different groove shapes are quite strict; therefore it isn’t yet ready for practical use. However, breakthroughs will eventually be achieved