FIELD: plastic metal working, namely tube production. SUBSTANCE: method for making flared end portion of tube comprises steps of locally deforming tube end at supporting its edge. Local deformation is realized in linear zone of deformation by compressing tube wall in its end portion at simultaneously restricting deformation zone at side of tube edge. Edge supporting effort is regulated by changing angle between tube rotation axis and deformation zone axis in plane parallel to plane of material motion in deformation zone. EFFECT: enlarged manufacturing possibilities at shaping tube, especially welded tubes. 2 cl, 3 dwg
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Authors
Dates
1998-02-10—Published
1994-07-04—Filed