Patent ID: 8959975
Filing Date: 2015-02-24
Classification: B21D

Abstract:
1. Method for the production of a cold-rolled profile made of a metal strip, the method comprising: cold-rolling the metal strip through at least one clamping nip formed by a guide roll and at least one lateral edging roll, disposing a roll axis of the guide roll parallel to a strip level of the metal strip, applying a clamping force on a side of the metal strip facing away from the guide roll in addition to exerting an upsetting force by the edging roll onto a strip edge while a roll axis of the edging roll is disposed transverse to the roll axis of the guide roll and is lined up at an angle to the strip level, and surrounding the strip edge at least on the side of the metal strip facing away from the guide roll with a stepped profile of the edging roll to produce at least one thickened profile edge, wherein at least one end section of the guide roll facing the edging roll extends convexly at a predetermined angle, and wherein the upsetting force is applied in several upsetting steps, each upsetting step comprising replacing at least the guide roll after each previous upsetting step by a successive guide roll having at least one end region extending convexly at a larger angle than the angle of the previous guide roll.