Method for Producing a Hollow Profiled Section
AssigneeThyssenKrupp Steel Europe AG
InventorThomas Flehmig
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Abstract
The object of setting out a method, with which substantially crack and/or fold-free greatly curved hollow profiles can be produced, is achieved by a method for producing a hollow profile having a curved portion which has a centre of curvature, wherein a blank is preshaped to form a U-shaped profile by introducing a punch into a first die and the U-shaped profile is shaped with a second die to form an O-shaped profile having at least one longitudinal slot, the blank being preshaped to form a U-shaped profile whose outer limb which faces away from the centre of curvature and which is associated with the curved portion is at least partially higher than the inner limb thereof which faces the centre of curvature and which is associated with the curved portion.
Claims16
Method for producing a hollow profile having a curved portion which has a centre of curvature, wherein a blank is preshaped to form a U-shaped profile by introducing a punch into a first die and the U-shaped profile is shaped with a second die to form an O-shaped profile having at least one longitudinal slot, comprising the steps of:
- preshaping the blank to form a U-shaped profile with an outer limb which faces away from a centre of curvature of the U-shaped profile and which is associated with a curved portion of the U-shaped profile and is at least partially higher than an inner limb of the U-shaped profile which faces the centre of curvature and which is associated with the curved portion.
Dependencies are inferred from the claim text.