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:
Dec. 05, 2017
Filed:
Aug. 29, 2013
Sms Meer Gmbh, Mönchengladbach, DE;
Peter Thieven, Aachen, DE;
SMS MEER GMBH, Moenchengladbach, DE;
Abstract
The invention relates to a method for producing a tube () or tubular pre-product from a solid billet in a rolling mill, comprising at least one roll () acting from the outside on the solid billet or tubular pre-product and a mandrel () carrying a piercing head () and engaging from the inside in the tube or tubular pre-product, wherein immediately after the solid billet has been completely pierced by the piercing head a fluidized deoxidation agent and/or an inert gas is supplied to the end of the tube or tubular pre-product facing the roll and is guided through the tube or tubular pre-product into the interior of the tube or tubular pre-product when the mandrel is withdrawn. The invention further relates to a rolling mill for performing the method according to the invention, comprising at least one roll acting from the outside onto the solid billet or tubular pre-product and a mandrel carrying a piercing head and engaging from the inside in the tube or tubular pre-product, wherein a device is provided for feeding and introducing a fluidized deoxidation agent and/or an inert gas to the end of the tube or tubular pre-product facing the at least one roll.