SYSTEMS AND METHODS FOR EXTRUDING TUBES

• Main Authors: KOEKENBERG RICK B, SCHULTZ ROBERT W, DAIL GERRY J, ROADMAN RONALD EUGENE, GREESON SCOTT E, FOLKERTS JILL A, FUNKHOUSER MARK, HERR JEAN M, HARRIS SCOTT J, BORGES AL, STAGG DANIEL
• Format: Patent
• Language: English
• Published: 08.10.2015
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; PERFORMING OPERATIONS; PIPES; PUNCHING METAL; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS

In some embodiments, the instant invention provides for a method including: extruding, utilizing a first die and a mandrel, a hollow tube having a first tube section having a first outer tube diameter of Z, a first inner tube diameter, and a first length; extruding, utilizing a second die and the mandrel, continuing from an end of the first tube section, a hollow tube having a second tube section having a second inner tube diameter and a second length, where the second die has a first die section, and where an angle of a wall of the first die section of the second die relative to a longitudinal axis of the hollow tube ranges from 10 to 45 degrees; extruding a third tube section, a third inner tube diameter, and a third length, and producing a monolithic hollow stepped tube extrudate.