Partially reinforced hollow profile

Abstract

A method for producing partially reinforced hollow profiles made of a metal, particularly steel, or a steel alloy includes forming a blank, together with a plurality of reinforcing metal elements arranged on the blank, into a hollow profile using the rolling-in technique or by means of U-O forming, wherein after forming the reinforcing elements arranged on the blank are connected to the formed blank at least by means of a positive interengagement. This method provides a simple and cost-effective procedure for producing reinforced hollow profiles made of metal.

1 . Method for producing partly reinforced hollow profiles from a metal, the method comprising
 forming a blank, together with a plurality of metal reinforcing members arranged on the blank, into a hollow profile by using the rolling-in technique or by U-to-O forming, the reinforcing members arranged on the blank being, after the forming, in a state where they are connected to the formed blank by positive interengagement.   
     
     
         2 . Method according to  claim 1 , wherein
 the plurality of reinforcing members have wall thicknesses which are matched to the stress.   
     
     
         3 . Method according to  claim 1 , wherein
 the plurality of reinforcing members are composed of materials which are matched to the stress.   
     
     
         4 . Method according to  claim 1 , wherein
 the plurality of reinforcing members are arranged on the inside and/or the outside of the hollow profile.   
     
     
         5 . Method according to  claim 1 , wherein
 opposing edges of the blank after forming are welded together by a longitudinal seam.   
     
     
         6 . Method according to  claim 1 , wherein
 a partly reinforced tubular hollow profile of circular cross-section is produced.   
     
     
         7 . Method according to  claim 1 , wherein
 the plurality of reinforcing members are fixed in place and/or positioned on the blank before the forming.   
     
     
         8 . Method according to  claim 1 , wherein
 after the forming the plurality of reinforcing members are, in addition, firmly bonded to the blank by tack welds, weld seams and/or spots of adhesive-bonding.   
     
     
         9 . Method according to  claim 1 , wherein
 at least one of the plurality of reinforcing members surrounds a circumference of the hollow profile and is welded together at opposing edges after the forming.   
     
     
         10 . Method according to  claim 1 , wherein
 further functional elements are incorporated in the hollow profile, during the forming, by embossing, punching and/or shaping.