Research on Automatic In-service Welding Technology for Long Distance Pipeline
During the service of the pipeline,welding repair is required due to corrosion,cracks,and excavation for oil and gas leakage.The in-service welding of pipelines in China adopts manual arc welding,which has low efficiency,is prone to welding defects,and poses risks.It is not suitable for emergency repair of high grade steel pipelines.The article introduces the pipeline automatic in-service welding system developed by Edison Welding Institute in the United States,including technical principles,process scenarios,performance parameters,and structural components.Combined with the engineering application of B-type sleeve welding tests and process qualifications,it is verified that the use of fully automatic welding technology for in-service welding of high grade steel pipelines is feasible.Propose research suggestions for the application of automatic welding technology in in-service pipeline welding in China,to ensure the quality and safe operation of in-service pipeline maintenance welding.
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