MILL FOR MAKING STRAIGHT-SEAM WELDED MEASURE-LENGTH TUBES Russian patent published in 2002 - IPC

FIELD: welded tube production, possibly by argon-arc microplasma welding. SUBSTANCE: mill includes apparatus for separating tube mounted in front of sizing stand. The last may operate in accelerated mode for periodic feed of tubes and it is provided with pickup for detecting tube motion value. After welding tube, sizing stand is periodically energized for feeding predetermined-length piece of tube for separating it. At time moment of separation of tube by measured lengths, tube is reliably hold by means of rolls against turning and shifting. It allows to omit additional mechanisms, to shorten length of mill and to simplify automatization of process for making welded tubes with accurate size of length. EFFECT: enhanced quality of welded tubes, simplified design of mill and reduced size of the whole line. 2 dwg