CONTINUOUS TUBE ROLLING METHOD AND MANDREL ASSEMBLY FOR THE IMPLEMENTATION THEREOF

• Main Authors: MAMCHENKO Vladislav Anatolyevich, CHERNYKH Ivan Nikolaevich, PYATKOV Vladimir Leonidovich, TOPOROV Vladimir Alexandrovich, PYSHMINTSEV Igor Yuryevich, PYANKOV Boris Grigoryevich, STRUIN Dmitriy Olegovich, LUBE Ivan Igorevich, KUZNETSOV Alexander Nikolaevich, LOKHANOV Dmitriy Valerievich, TRUTNEV Nikolay Vladimirovich, KLACHKOV Alexander Anatolyevich, VYDRIN Alexander Vladimirovich, SHKURATOV Evgeniy Alexandrovich, ERSHOV Igor Anatolyevich, GOROZHANIN Pavel Yuryevich
• Format: Patent
• Language: English
• Published: 29.11.2023

A method for rolling tubes on a continuous tube rolling mill involves deforming a tube billet using a mandrel assembly. The mandrel assembly comprises a cylindrical mandrel configured such that its ends can be alternately coupled to an attachment of the mandrel assembly. The mandrel is configured such that its ends have portions with a beveled lateral surface, wherein the angle of the generatrix of said surface to the longitudinal axis of the mandrel is between 10 and 70 degrees. The deformation of tube billets is carried out until the amount of wear on the working regions at both ends of the mandrel is not less than 25% of a critical value, then the mandrel is sharpened. The invention increases the service life of a mandrel, reduces the formation of flaws on the inside surface of the tubes, and prevents accidents from occurring during the rolling process.