The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 05, 2013
Filed:
Dec. 16, 2011
Paolo Marin, Vigevano, IT;
Vincenzo Palma, San Giovanni, IT;
Marco Ghisolfi, Muggio, IT;
Guido Emilio Zanella, Milan, IT;
Jacopo Grassino, Giaveno, IT;
Alberto Vittorio Maria Bregante, Milan, IT;
Paolo Marin, Vigevano, IT;
Vincenzo Palma, San Giovanni, IT;
Marco Ghisolfi, Muggio, IT;
Guido Emilio Zanella, Milan, IT;
Jacopo Grassino, Giaveno, IT;
Alberto Vittorio Maria Bregante, Milan, IT;
SMS Innse SpA, S. Donato Milanese, IT;
Abstract
The present invention relates to a system and method for rolling a seamless tube. The plant comprises a main rolling mill with adjustable rolls for mandrel-rolling a semi-finished tube. The plant also comprises a fixed-roll extracting/reducing mill positioned downstream of the main rolling mill. The extracting/reducing mill is designed to extract the semi-finished tube from the mandrel and reduce its diameter to a predetermined value close to that desired for the finished tube. Finally, the plant comprises a adjustable-roll sizing mill. The sizing mill is positioned downstream of the extracting/reducing mill. This sizing mill is designed to adjust the radial position of the rolls and define the diameter of the outgoing tube.