Method of Repairing a Component, and a Component

Abstract

A method for the crack repair of a component having a crack on a surface, including excavating a hollow around the crack, wherein the hollow has two recesses and the recesses are arranged at the height of the surface and are open at the height of the surface, and wherein the recesses are arranged around the circumference of the hollow and further including filling the hollow with a braze. A component having a crack on a surface is also provided with a hollow which is excavated around the crack, the hollow has two recesses and the recesses are arranged at the height of the surface and are open at the height of the surface, and the recesses are arranged around the circumference of the hollow, wherein the hollow is filled with the braze.

1 .- 13 . (canceled) 
   
   
       14 . A method for the crack repair of a component having a crack on a surface, comprising:
 excavating a hollow around the crack, the hollow has two recesses and the recesses are arranged at a height of the surface and are open at the height of the surface, and the recesses are arranged around the circumference of the hollow; and   filling the hollow with a braze.   
   
   
       15 . The method as claimed in  claim 14 , wherein the recesses are arranged in pairs on opposite sides of the hollow. 
   
   
       16 . The method as claimed in  claim 14 , wherein the hollow is cuboid. 
   
   
       17 . The method as claimed in  claim 15 , wherein the hollow is cuboid. 
   
   
       18 . The method as claimed in  claim 14 , wherein the hollow has a longitudinal direction parallel to the crack direction of the crack 
   
   
       19 . The method as claimed in  claim 14 , wherein the recesses extend transversely to a crack direction of the crack or a longitudinal direction of the hollow and accordingly the hollow has a width at the height of the surface greater than a width of the hollow without a recess. 
   
   
       20 . The method as claimed in  claim 19 , wherein the recesses extend perpendicularly to a crack direction of the crack or a longitudinal direction of the hollow. 
   
   
       21 . The method as claimed in  claim 14 , wherein the recesses form a cuboid. 
   
   
       22 . The method as claimed in  claim 14 , further comprising:
 arranging rods on the component, wherein the recesses are in such a shape that the rods are arranged in the vicinity of the surface of the component, but do not protrude beyond the surface of the component.   
   
   
       23 . The method as claimed in  claim 21 , further comprising:
 arranging rods on the component, wherein the recesses are in such a shape that the rods are arranged in the vicinity of the surface of the component, but do not protrude beyond the surface of the component.   
   
   
       24 . The method as claimed in  claim 14 , further comprising:
 arranging rods in the recesses of the hollow; and   filling the hollow with a filler material, wherein the melting temperature of the rods is higher than the melting temperature of the filler material.   
   
   
       25 . The method as claimed in  claim 24 , wherein the hollow is filled with a braze. 
   
   
       26 . The method as claimed in  claim 22 , wherein the rods are made of ceramic. 
   
   
       27 . The method as claimed in  claim 24 , wherein the rods are made of ceramic. 
   
   
       28 . The method as claimed in  claim 14 , further comprising:
 fastening a coupon into the hollow, wherein the coupon has a shape of the hollow with recesses.   
   
   
       29 . The method as claimed in  claim 28 , wherein the coupon is brazed in the hollow. 
   
   
       30 . A component, comprising:
 a crack on a surface;   a hollow which is excavated around the crack, the hollow has two recesses and the recesses are arranged at the height of the surface and are open at the height of the surface, and the recesses are arranged around the circumference of the hollow; and   a braze, wherein the hollow is filled with the braze.   
   
   
       31 . The component as claimed in  claim 30 , wherein the recesses are arranged in pairs on opposite sides of the hollow. 
   
   
       32 . The component as claimed in  claim 30 , wherein the hollow is cuboid. 
   
   
       33 . The component as claimed in  claim 30 , wherein rods are arranged on the component, wherein the recesses are in such a shape that the rods are arranged in the vicinity of the surface of the component, but do not protrude beyond the surface of the component.