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Application filed by Александр Иванович Лобанов, Николай Никитич Коржов, Георгий Николаевич Кущинский, Валерий Павлович Турбар, Марк Исаакович ХанинfiledCriticalАлександр Иванович Лобанов
Priority to UAU200907300UpriorityCriticalpatent/UA46894U/en
Publication of UA46894UpublicationCriticalpatent/UA46894U/en
A method of production of cold-deformed precision pipes includes producing a billet by hot plugging the pierced billet in three-high mill and subsequent cold drawing on a short cylindrical fixed mandrel. Plugging the billet is carried out on a short fixed conical mandrel with expanding along diameter within the limits of 8-23 %, then drawing is performed on a long mobile conical mandrel with deformation within the limits of 35-55 %, and after drawing on the short cylindrical mandrel expanding of pipe is carried out by drawing with expansion on the conical mandrel with deformation along diameter within the limits of 0.2 -1.2 %.
UAU200907300U2009-07-132009-07-13method of production of cold-deformed precision pipes
UA46894U
(en)