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Application filed by Валерий Павлович Турбар, Георгий Николаевич Кущинский, Александр Иванович Лобанов, Николай Никитич Коржов, Марк Исаакович ХанинfiledCriticalВалерий Павлович Турбар
Priority to UAU200910308UpriorityCriticalpatent/UA48310U/en
Publication of UA48310UpublicationCriticalpatent/UA48310U/en
A method of pipe drawing includes drawing billet on a mobile tapered mandrel through a drawplate and subsequent displacement of the finished pipe and mandrel relative to each other at removal of the pipe from the mandrel. The removal of pipe from the mandrel is carried out in two stages. At the first stage at fixed position of the mandrel the pipe is displaced in the direction of drawing for a distance L, which is determined from a given formula. At the second stage forced withdrawal of the mandrel is performed through the drawplate to its initial position in the direction opposite to drawing at the fixed position of the drawn pipe after completion of the first stage of removal of the pipe from the mandrel.
UAU200910308U2009-10-122009-10-12method of pipe drawing
UA48310U
(en)