METHOD AND CORRESPONDING INSTALLATION FOR THE RECIRCULATION OF THE MANDRELS IN A ROLLING MACHINE WORKING IN THE HOLDING MANDREL MODE, FOR THE MANUFACTURE OF TUBES WITHOUT WELDING

摘要

P IN THIS PROCESS OF RECIRCULATION OF THE MANDRELS OF A ROLLING MACHINE WORKING IN THE RETAINED MANDREL MODE, A NEW CHUCK OR, IN ANY CASE READAPTED TO LAMINATION, IS PRE-THREADED IN A CORRESPONDING BORED BLANK IN A SIDE POSITION RELATIVE TO THE ROLLING AXIS TO AND THEN IT IS TRANSFERRED TO A POSITION LOCATED ON THE ROLLING AXIS UPSTREAM OF THE ROLLER 1 AT THE SAME TIME AS WE MOVE AWAY FROM THIS POSITION A USED CHUCK 2 RECOVERED ON THE ROLLER 1 AT THE END OF A PREVIOUS LAMINATION CYCLE. /P