Method for surface processing of a component by flow grinding

Abstract

The invention relates to a method for the surface processing of a component by flow grinding, comprising the following steps:(a) providing a blank (1),(b) flooding at least one surface of the blank (1) with a fluid carrier material containing grinding particles,wherein the blank (1) is rounded at positions at which, during flooding, the flow direction (25) of the fluid carrier material containing the grinding particles changes and, at positions at which a flow separation occurs on the finished component, additional material (5) is attached such that a flow separation at the beginning of the flooding operation is prevented.

1 - 15 . (canceled) 
     
     
         16 . A method for the surface processing of a component by flow grinding, comprising the following steps:
 (a) providing a blank,   (b) flooding at least one surface of the blank with a fluid carrier material containing grinding particles,   wherein the blank is rounded at positions at which, during flooding, the flow direction of the fluid carrier material containing the grinding particles   changes and, at positions at which a flow separation occurs on the finished component, additional material is attached such that a flow separation at the beginning of the flooding operation is prevented.   
     
     
         17 . The method as claimed in  claim 16 , wherein the blank is rounded at the positions at which, during flooding, the flow direction of the fluid carrier material containing the grinding particles changes with a radius which corresponds to 0.1 to 2.5 times the mean spacing between the surface over which flow passes and the opposite wall of the duct through which the fluid carrier material containing the grinding particles flows. 
     
     
         18 . The method as claimed in  claim 16 , wherein the additional material, which is attached at positions at which a flow separation occurs on the finished component, on the side facing the flow, in the case of a component having a rotationally symmetrical projection surface exposed to the flow, has a surface which is inclined and runs concavely in the flow direction with respect to a central axis of a duct in which the fluid carrier material containing the grinding particles flows. 
     
     
         19 . The method as claimed in  claim 18 , wherein the inclined and concavely running surface has a curvature with a radius in the range of from 1 to 5 times the diameter of the rotationally symmetrical projection surface. 
     
     
         20 . The method as claimed in  claim 16 , wherein the additional material, which is attached at positions at which a flow separation occurs on the finished component, on the side facing the flow, in the case of a component having a non-rotationally symmetrical projection surface exposed to the flow, has a surface which is inclined and runs concavely in the flow direction with respect to a central plane running parallel to the flow direction of the fluid carrier material containing the grinding particles. 
     
     
         21 . The method as claimed in  claim 20 , wherein the inclined and concavely running surface has a curvature with a radius in the range of from 2 to 10 times the maximum perpendicular spacing from the central plane running parallel to the flow direction of the fluid carrier material containing the grinding particles to the edge of the non-rotationally symmetrical projection surface. 
     
     
         22 . The method as claimed in  claim 16 , wherein, in the case of a surface over which flow passes that forms a wall of a duct, in which the duct comprises a change in direction, material which has in the center a convexly running surface and outwardly a concavely running surface is applied to the wall of the duct which is exposed to the flow of the fluid carrier material containing the grinding particles on account of the change in direction of the duct. 
     
     
         23 . The method as claimed in  claim 22 , wherein the convexly running surface has a curvature with a radius in the range of from 0.5 to 5 times the hydraulic diameter of the duct. 
     
     
         24 . The method as claimed in  claim 22 , wherein the applied material has a maximum thickness which corresponds to 0.1 to 0.75 times the hydraulic diameter of the duct. 
     
     
         25 . The method as claimed in one of claims  7  to  9 , wherein the concavely running surface has a curvature with a radius in the range of from 0.5 to 5 times the hydraulic diameter of the duct. 
     
     
         26 . The method as claimed in claim  1 , wherein, in the case of a surface over which flow passes that forms a wall of a duct, in which the duct has a widening in which the duct is widened from a region with a first hydraulic diameter to a region with a second hydraulic diameter, in which a transition portion of the wall of the duct between the region with the first hydraulic diameter and the region with the second hydraulic diameter has an angle of between 7° and 90° with respect to the main flow direction, in which the surface over which flow passes runs convexly at the transition from the region with the first hydraulic diameter to the transition portion. 
     
     
         27 . The method as claimed in  claim 26 , wherein the surface running convexly at the transition from the region with the first hydraulic diameter to the transition portion has a curvature with a radius in the range of from 0.05 to 2.5 times the hydraulic diameter of the duct upstream of the widening. 
     
     
         28 . The method as claimed in  claim 26 , wherein the surface over which flow passes runs concavely at the transition from the transition portion to the region with the second hydraulic diameter. 
     
     
         29 . The method as claimed in  claim 28 , wherein the surface running concavely at the transition from the transition portion to the region with the second hydraulic diameter has a curvature with a radius in the range of from 0.05 to 2.5 times the hydraulic diameter of the duct upstream of the widening. 
     
     
         30 . The method as claimed in  claim 16 , wherein the fluid carrier material is water, oil or a highly viscous grease.