Method for producing metallic components, particularly for turbo machines, having small edge radii, and component produced therewith

Abstract

A method for producing metallic components, and metallic components produced by the method, particularly for turbo machines, having small edge radii, is disclosed. The method includes mechanical and/or electrochemical machining of a component while producing a small edge radius and solidifying the small edge radius by ultrasonic shot peening. As a result of the method, the disadvantages of the prior art are avoided and a machine process that can be automated has been provided, the method permitting considerable savings of time and labor and leading to reproducible results.

1 - 11 . (canceled) 
     
     
         12 . A method for producing a metallic component, comprising the steps of:
 mechanical and/or electrochemical machining of the component while producing a small edge radius; and   solidifying the small edge radius by ultrasonic shot peening.   
     
     
         13 . The method according to  claim 12 , wherein the metallic component is a component of a turbo machine. 
     
     
         14 . The method according to  claim 12 , wherein a frequency of 18 kHz to 20 kHz is used for the ultrasonic shot peening. 
     
     
         15 . The method according to  claim 12 , wherein a vibration amplitude of 40-80 μm is used for the ultrasonic shot peening. 
     
     
         16 . The method according to  claim 12 , wherein a duration of the ultrasonic shot peening per peening area is 20 seconds to 30 minutes. 
     
     
         17 . The method according to  claim 16 , wherein the duration is 5 minutes to 15 minutes. 
     
     
         18 . The method according to  claim 12 , wherein a sphere size from 0.3 mm to 2 mm is used for the ultrasonic shot peening. 
     
     
         19 . The method according to  claim 12 , wherein a sphere hardness of up to 70 HRC is used for the ultrasonic shot peening. 
     
     
         20 . The method according to  claim 12 , wherein a sphere mass of 1 g to 100 g per component is used in the ultrasonic shot peening. 
     
     
         21 . The method according to  claim 12 , wherein the metallic component is mounted in a housing. 
     
     
         22 . The method according to  claim 21 , wherein the housing has a volume of 15 mm 3  to 8 m 3 . 
     
     
         23 . The method according to  claim 22 , wherein the housing has a volume of 1 m 3  to 3 m 3 . 
     
     
         24 . The method according to  claim 12 , wherein spheres consisting of steel, tungsten carbide, ceramic or glass are used for the ultrasonic shot peening. 
     
     
         25 . A component for a turbo machine, wherein the component is comprised of metal and has an edge radii <0.3 mm, and wherein the edge radii is solidified by peening. 
     
     
         26 . The component according to  claim 25 , wherein the edge radii is <0.05 mm. 
     
     
         27 . A method for producing a metallic component, comprising the steps of:
 producing a small edge radius by mechanical and/or electrochemical machining of the component; and   solidifying the small edge radius by ultrasonic shot peening.   
     
     
         28 . The method according to  claim 27 , wherein the ultrasonic shot peening step includes exciting spheres by ultrasonic waves such that the spheres impinge off of walls of a housing that houses the component and the small edge radius of the component. 
     
     
         29 . The method according to  claim 27 , wherein the ultrasonic shot peening step includes the step of amplifying sound waves by an acoustic amplifier in a housing that houses the component. 
     
     
         30 . The method according to  claim 27 , wherein the small edge radius is <0.05 mm. 
     
     
         31 . The method according to  claim 28 , wherein the spheres each have a size ranging between 0.3 mm to 2 mm.