Continuous tube rolling method and mandrel assembly for the implementation thereof

Continuous tube rolling method and mandrel assembly for the implementation thereof

A method for rolling tubes on a continuous tube rolling mill involves deforming a tube billet using a mandrel assembly. The mandrel assembly includes cylindrical mandrel configured such that its ends can be alternately coupled to an attachment of the mandrel assembly. The mandrel is configured such...

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Hauptverfasser: KLACHKOV, ALEXANDER ANATOLYEVICH, PYSHMINTSEV, IGOR YURYEVICH, SHKURATOV, IVGENIY ALEXANDROVICH, PYATKOV, VLADIMIR LEONIDOVICH, LUBE, IVAN IGOREVICH, TRUTNEV, NIKOLAY VLADIMIROVICH, LOKHANOV, DMITRIY VALERIEVICH, VYDRIN, ALEXANDER VLADIMIROVICH, TOPROV, VLADIMIR ALEXANDROVICH, KUZNETSOV, ALEXANDER NIKOLAEVICH, MAMCHENKO, VLADISLAV ANATOLYEViCH, CHERNYKH, IVAN NIKOLAEVICH, STRUIN, DMITRIY OLEGOVICH, GOROZHANIN, PAVEL YURYEVICH, PYANKOV, BORIS GRIGGRYEVICH, ERSHOV, IGOR ANATGLYEVICH
Format: Patent
Sprache:eng
Schlagworte:
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
ROLLING OF METAL
TRANSPORTING
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Beschreibung
Zusammenfassung:A method for rolling tubes on a continuous tube rolling mill involves deforming a tube billet using a mandrel assembly. The mandrel assembly includes 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.