FIELD: plastic working of metals.
SUBSTANCE: method comprises steps of assembling tubes, welding and bending them. Tubes are welded at forming seam whose length exceeds necessary value due to expansion of end portions of tubes joined for assembling. Then tube is straightened by local plastic deformation of welded seam and near-seam zones by means of compression efforts while imparting to tube rotation and translation motion.
EFFECT: possibility for preventing flaws of welded seams due to finish plastic deformation of them.
8 dwg
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