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Application filed by Григорій Олександрович Сизоненко, Григорий Александрович СизоненкоfiledCriticalГригорій Олександрович Сизоненко
Priority to UA93101097ApriorityCriticalpatent/UA19508A/en
Publication of UA19508ApublicationCriticalpatent/UA19508A/en
The invention relates to pipe production and can be used in production of the pipes by method of cold or hot deformation. The disclosed method of longitudinal rolling pipes is carried out as follows. Deformation of tubular billet is carried out into two passes. In the first pass the tubular billet is set into shaped rolls with oval pass and rolling is performed on a cylindrical (mobile or retained) mount or on the retained conical mount. In the case the mode of deformation is set in such a manner that after rolling in oval pass the tubular billet has transverse wall thickness variation, which is smoothly changed from the joint of pass to the crown of groove.
UA93101097A1993-03-091993-03-09method of longitudinal rolling pipes
UA19508A
(en)