PRECISION WELDING IN MOTION

摘要

David Freeman (USA) and Steve Peters (USA), Lincoln Electric Company, discuss the benefits of active arc suppression and its role in weld critical applications. Lincoln Electric has been synonymous with pipeline construction for more than a century, ever since the introduction of the first variable voltage, single operator, portable welding machine in 1911. By the 1920s, the company had introduced the Fleetweld 5 coated electrode, which produced up to 50% higher tensile strength and 100% greater ductility than the bare electrodes used at that time. In subsequent decades, World War II and the post-war boom in the US auto industry boosted demand for petroleum products. This, in turn, made welding a critical process in pipeline construction in the US oil industry for the remainder of the 20th century and beyond.