VERFAHREN ZUR HERSTELLUNG EINES ROHRSTÜCKS IN EINEM STRUKTURBAUTEIL UND MATRIZE HIERFÜR

摘要

A method of forming an elongated blank (a) into a structural component (A) having a predetermined outer configuration, the method comprising placing the elongated blank into a cavity (200) with an inner surface surrounding the blank and having said predetermined outer configuration, plugging the elongated blank at at least one end thereof and forming the elongated blank into the component by inductively heating axial portions along the length of said elongated blank by axially spaced conductors (C) adjacent said cavity while forcing a gas at a high pressure into the plugged elongated blank until the elongated blank conforms to at least a portion of said inner surface of the cavity to form the component, whereas the induction heating is varied along the length of the elongated blank to modulate the temperature/time pattern along the length of the component.