Syn-ergomachines has introduced circular seam welding stations for automatic welding of circular joints. A number of components such as pipes and shells can be rotated during welding by using these welding stations. The size of the assemblies may range from small stainless steel instrument-fittings to large maraging steel rocket-motor casings. Headstock manipulators and circular seam welding systems have been commonly used for the manufacture of sterile stainless steel pipefittings for bioprocess, and shells for pressure-vessels respectively. The objective of automation is to economically maintain consistent quality at a high productivity level by de-skilling the welding operation. The system incorporates fine control of heat input and rotation, positioning of head, control of distortion and saving of costly inert gas. In conventional technique the welder operates hazardously because of proximity with the welding zone, height from floor, poor supports, awkward body posture, and long arcing times. Using the circular seam welding station, the operator is safely away as viewing the welding zone remotely to control the head position. The welding processes employed are pulsed-tig for thin sections, normal tig for intermediate thickness, and mig for fillup of heavy walls. Multiple heads can be deployed simultaneously to enhance the productivity further. The company supplies a wide range of modules selected to meet the application and desired level of automation. Orbital pipe welding systems [for non-rotatable circular seams], longitudinal seam welding station and other custom-built spms are also available.
