RU95104282A - Tube helical rolling method
- Google Patents
Tube helical rolling method
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Publication number
RU95104282A
RU95104282ARU95104282/02ARU95104282ARU95104282ARU 95104282 ARU95104282 ARU 95104282ARU 95104282/02 ARU95104282/02 ARU 95104282/02ARU 95104282 ARU95104282 ARU 95104282ARU 95104282 ARU95104282 ARU 95104282A
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Application filed by Акционерное общество открытого типа "Вятка"filedCriticalАкционерное общество открытого типа "Вятка"
Priority to RU95104282ApriorityCriticalpatent/RU2067507C1/en
Application grantedgrantedCritical
Publication of RU2067507C1publicationCriticalpatent/RU2067507C1/en
Publication of RU95104282ApublicationCriticalpatent/RU95104282A/en
FIELD: rolled tube production, particularly manufacture of seamless hot rolled tubes by helical rolling. SUBSTANCE: at rolling tubes in helical rolling mill sleeve-type blank is used. Said blank has wall thickened near its bottom and leading end with variable diameter. Blank is deformed on held mandrel at least in two passes for achieving ratio of tube diameter to its thickness consisting 15-25. It is advisable to use as blank waste bodies of shells. EFFECT: enhanced efficiency. 2 cl
Claims (1)
Изобретение относится к трубопрокатному производству и может быть использовано при производстве бесшовных горячекатаных труб винтовой прокаткой. При прокатке на стане винтовой прокатки используют стакановидную заготовку с утолщенной стенкой к дну и передним концом переменного диаметра. Заготовку деформируют на удерживаемой оправке не менее чем за два прохода до достижения отношения диаметра трубы к толщине ее стенки в пределах 15 - 25. В качестве заготовки целесообразно использователь утилизированные корпуса снарядов.The invention relates to pipe rolling production and can be used in the production of seamless hot rolled tubes by screw rolling. When rolling on a helical rolling mill, a glass-like billet is used with a thickened wall to the bottom and the front end of a variable diameter. The workpiece is deformed on the held mandrel for at least two passes until the ratio of the pipe diameter to the thickness of its wall reaches 15–25. It is advisable to use disposed shell shells as the workpiece.
RU95104282A1995-03-231995-03-23Method for screw rolling of pipes
RU2067507C1
(en)