Process for removing inclusions present in a welding seam and device for executing said process

Abstract

A process for removing inclusions ( 6 ), in particular silicates, present in the surface region of a welding seam ( 3 ), which is manufactured using shielding gas and which joins metallic components ( 4 ) to one another is designed in such a manner that the welding seam ( 3 ) is impinged by several jets ( 5 ) of a fluid medium that is subject to high pressure and by using different angles of incidence.

1 . A process for removing inclusions in particular, silicates, present in the surface region of a welding seam, which is manufactured using shielding gas and which joins metallic components to one another, wherein the welding seam is impinged by several jets of a fluid medium that is subject to high pressure and by using different angles of incidence  
   
   
       2 . The process pursuant to  claim 1 , wherein the jets are applied at the same time.  
   
   
       3 . The process pursuant to  claim 1 , wherein the jets are applied onto the welding seam in a rotating and/or oscillating manner  
   
   
       4 . The process pursuant to  claim 1 , wherein at least a few of the individual jets are adjusted to one another and extend in an inclined manner  
   
   
       5 . The process pursuant to  claim 1 , wherein the jets are guided continuously in the direction of the welding seam  
   
   
       6 . The process pursuant to  claim 1 , wherein the welding seam is moved in relation to the region of incidence of the jets  
   
   
       7 . The process pursuant to  claim 1 , wherein the jets are guided at variable distances (e 1  to e 3 ) from a nozzle head  
   
   
       8 . The process pursuant to  claim 1 , wherein at least one jet is guided axially in relation to the centerline of the nozzle head  
   
   
       9 . The process pursuant to  claim 1 , wherein the fluid medium is subject to a pressure of 1,500 to 4,000 bar.  
   
   
       10 . A device for executing the process pursuant to  claim 1 , wherein an arrangement is provided that comprises of several nozzles for a fluid medium that is subject to high pressure and that the nozzles extend at variable angles of inclination (α 1 -α 3 ).  
   
   
       11 . A device pursuant to  claim 10 , wherein at least a few of the nozzles are adjusted to one another and extend in an inclined manner.  
   
   
       12 . A device pursuant to  claim 10 , wherein the nozzles are arranged in a nozzle head.  
   
   
       13 . A device pursuant to  claim 10 , wherein the nozzle head can be moved in a rotating and/or oscillating manner.  
   
   
       14 . A device pursuant to  claim 10 , wherein said device can be moved in relation to the welding seam to be processed.  
   
   
       15 . A device pursuant to  claim 10 , wherein the relative movement of the device or of the workpiece provided with the welding seam amounts to approximately 60 to 90 mm/s.  
   
   
       16 . A device pursuant to  claim 10 , wherein the speed of the nozzle head during operation is approximately 1,000 to 2,000 min −1 .  
   
   
       17 . A device pursuant to  claim 10 , wherein the diameter of the nozzles is approximately 0.4 to 0.8 mm.