Method for producing steel profiles

Abstract

The invention relates to the field of steel processing and steel production, in particular the production of steel profiles. The invention relates to a method for manufacturing a steel profile, the method comprising the steps of: providing a workpiece ( 2, 44, 52 ), in particular a steel blank, preferably a steel strip blank, forming a weakened point ( 10 ) in the region of a planned bend in the workpiece ( 2, 44, 52 ) and bending the workpiece ( 2, 44, 52 ) to produce a bend in the workpiece ( 2, 44, 52 ). After bending, the weakened point ( 10 ) is reinforced by welding.

1 - 12 . (canceled) 
     
     
         13 . A steel profile, in particular a steel profile produced by a method, comprising:
 providing a steel blank workpiece;   forming a weakened point by forming an indentation in a region of a planned bend in the workpiece; and   bending the workpiece to produce a bend in the workpiece,
 wherein the indendation formed on an inner side of the bend in the workpiece is closed after bending by laser welding, 
 wherein the laser welding uses a focused laser beam aimed from an outer side of the bend in the workpiece to the inner side of the bend, the focus of the beam being inside the workpiece; 
   the steel profile comprising a workpiece which has a weakened point in a bending region.   
     
     
         14 . The steel profile according to  claim 13 ,
 wherein the weakened point is formed as an indentation in the workpiece.   
     
     
         15 . The steel profile according to  claim 13 ,
 the workpiece having a substantially V-shaped indentation in the bending region, wherein the sides of the indentation preferably form an angle ranging from 90° to 135°.   
     
     
         16 . The steel profile according to  claim 13 ,
 the workpiece having a substantially W-shaped indentation in the bending region.   
     
     
         17 . The steel profile according to  claim 13 ,
 the workpiece having an indentation which is V-shaped in a first region and W-shaped in a second region, in particular in a bottom region of the indentation,   the sides of the V-shaped region preferably forming an angle ranging from approximately 50° to 110°.   
     
     
         18 . The steel profile according to  claim 16 ,
 the sides of the W-shaped indentation adjoin the sides of the V-shaped indentation, in particular in such a way that the respective outer sides of the W-shaped indentation adjoin the sides of the V-shaped indentation.   
     
     
         19 . The steel profile according to  claim 13 ,
 the workpiece having a weld seam, in particular a laser weld seam, for reinforcing the weakened point in the bending region.   
     
     
         20 . A sheet pile, in particular a Z sheet pile formed by a steel profile which is produced by a method according to  claim 13 . 
     
     
         21 . A sheet pile, in particular a Z sheet pile, comprising:
 a lock member for connecting the sheet pile to a lock member of another sheet pile or of a support element,   comprising a neck strip extending from a wall section of the sheet pile, in particular substantially at right angles thereto, and   a claw strip extending from the neck strip,   wherein the claw strip is oriented substantially at an angle of at least 90°, in particular at an angle of 100° to 130°, to the neck strip, and one and of the claw strip faces the wall section.   
     
     
         22 . The sheet pile according to  claim 21 ,
 the neck strip being oriented at an angle of at most 90°, in particular at an angle of approximately 20° to 50°, preferably 30° to 40°, to the wall section.   
     
     
         23 . A sheet pile, in particular a Z sheet pile, comprising:
 a lock member for connecting the sheet pile to a lock member of another sheet pile or of a support element,   comprising a neck strip extending from a wall section of the sheet pile in particular at right angles thereto,   a head strip extending from the neck strip, in particular substantially at right angles thereto,   a front strip extending from the head strip, in particular substantially at right angles thereto, and   a claw strip extending from the front strip,   wherein the claw strip is oriented substantially at an angle of at least 90°, in particular at an angle of 100° to 130°, to the front strip, and extends from the front strip in a U-shaped region formed by the neck strip, the head strip and the front strip.   
     
     
         24 . The sheet pile according to  claim 23 ,
 wherein the neck strip is oriented at an angle of at most 90°, in particular at an angle of approximately 30° to 70°, preferably 45° to 55°, to the wall section and/or   wherein the head strip is oriented at an angle of at most 90°, in particular at an angle of approximately 20° to 50°, preferably 30° to 40°, to the neck strip and/or   wherein the front strip is oriented at an angle of at most 90°, in particular at an angle of approximately 30° to 70°, preferably 45° to 60°, to the head strip.   
     
     
         25 . The sheet pile according to  claim 21 ,
 in which the claw strip is oriented substantially at an angle of 120° to 140° to the front strip.   
     
     
         26 . The sheet pile according to  claim 21 ,
 wherein one end of the claw strip is rounded.   
     
     
         27 . A sheet pile wall comprising at least two sheet piles, in particular Z sheet piles, according to  claim 13 . 
     
     
         28 . A system for producing a steel profile from a workpiece, in particular a steel blank, preferably a steel strip blank, comprising:
 a weakening device for forming a weakened point in the workpiece, in particular an indentation, in the region of a planned bend in the workpiece and   a bending device for bending the workpiece in the region of the weakened point.   
     
     
         29 . The system according to  claim 28 , comprising
 a feeding device for providing the workpiece, in particular the steel blank, preferably the steel strip blank.   
     
     
         30 . The system according to  claim 28 ,
 wherein a cutting device is provided for dividing a steel strip fed from a steel strip coil into workpieces.   
     
     
         31 . The system according to  claim 28 ,
 wherein a cutting device is designed to introduce an indentation which is oriented substantially transverse to the longitudinal direction of the steel strip blank and which is open to a lateral edge of the steel strip blank.