Apparatus having a housing and having at least one rotating component disposed in the housing

Abstract

A rotating component is supported radially and/or axially in a housing of lightweight metal, in particular aluminum or an aluminum alloy, with at least a part of the housing at least partly forming a bearing of the rotating component. At least in the region of the bearing for the rotating component, the housing part is provided with a coating of a nickel alloy, which on its surface has an at least substantially plane microstructure.

1 - 8 . (canceled)  
   
   
       9 . In an apparatus, having a housing ( 10 ,  12 ) and having at least one rotating component ( 16 ,  18 ), disposed in the housing ( 10 ,  12 ), which component is radially and/or axially supported by bearing means in the housing, the housing ( 10 ,  12 ) comprising lightweight aluminum or an aluminum alloy, and at least one part ( 10 ,  12 ) of the housing at least partly forming the bearing means of the at least one component ( 16 ,  18 ), the improvement wherein the at least one housing part ( 10 ,  12 ), at least in the region of the bearing for the at least one component ( 16 ,  18 ), is provided with a coating ( 50 ) of a nickel alloy, which on its surface has an at least substantially plane microstructure.  
   
   
       10 . The apparatus of  claim 9 , wherein the coating ( 50 ) comprises a nickel-phosphorus alloy.  
   
   
       11 . The apparatus of  claim 9 , wherein the coating ( 50 ) is hardness-enhanced by tempering.  
   
   
       12 . The apparatus of  claim 10 , wherein the coating ( 50 ) is hardness-enhanced by tempering.  
   
   
       13 . The apparatus of  claim 9 , wherein the housing part ( 10 ) has at least one bearing journal ( 24 ,  26 ), on which the at least one component ( 16 ,  18 ) is radially supported; and wherein at least the at least one journal ( 24 ,  26 ) is provided on its surface with the coating ( 50 ).  
   
   
       14 . The apparatus of  claim 10 , wherein the housing part ( 10 ) has at least one bearing journal ( 24 ,  26 ), on which the at least one component ( 16 ,  18 ) is radially supported; and wherein at least the at least one journal ( 24 ,  26 ) is provided on its surface with the coating ( 50 ).  
   
   
       15 . The apparatus of  claim 11 , wherein the housing part ( 10 ) has at least one bearing journal ( 24 ,  26 ), on which the at least one component ( 16 ,  18 ) is radially supported; and wherein at least the at least one journal ( 24 ,  26 ) is provided on its surface with the coating ( 50 ).  
   
   
       16 . The apparatus of  claim 9 , wherein the housing part ( 10 ,  12 ) has a wall ( 21 ,  23 ;  15 ), which is disposed at least approximately perpendicularly to the pivot axis ( 25 ,  27 ) of the at least one component ( 16 ,  18 ), and which forms an axial bearing of the at least one component ( 16 ,  18 ); and wherein at least the wall ( 21 ,  23 ;  15 ) of the housing part ( 10 ,  12 ) is provided with the coating ( 50 ).  
   
   
       17 . The apparatus of  claim 10 , wherein the housing part ( 10 ,  12 ) has a wall ( 21 ,  23 ;  15 ), which is disposed at least approximately perpendicularly to the pivot axis ( 25 ,  27 ) of the at least one component ( 16 ,  18 ), and which forms an axial bearing of the at least one component ( 16 ,  18 ); and wherein at least the wall ( 21 ,  23 ;  15 ) of the housing part ( 10 ,  12 ) is provided with the coating ( 50 ).  
   
   
       18 . The apparatus of  claim 11 , wherein the housing part ( 10 ,  12 ) has a wall ( 21 ,  23 ;  15 ), which is disposed at least approximately perpendicularly to the pivot axis ( 25 ,  27 ) of the at least one component ( 16 ,  18 ), and which forms an axial bearing of the at least one component ( 16 ,  18 ); and wherein at least the wall ( 21 ,  23 ;  15 ) of the housing part ( 10 ,  12 ) is provided with the coating ( 50 ).  
   
   
       19 . The apparatus of  claim 13 , wherein the housing part ( 10 ,  12 ) has a wall ( 21 ,  23 ;  15 ), which is disposed at least approximately perpendicularly to the pivot axis ( 25 ,  27 ) of the at least one component ( 16 ,  18 ), and which forms an axial bearing of the at least one component ( 16 ,  18 ); and wherein at least the wall ( 21 ,  23 ;  15 ) of the housing part ( 10 ,  12 ) is provided with the coating ( 50 ).  
   
   
       20 . The apparatus of  claim 9 , wherein this apparatus is a pump, and the at least one component ( 16 ,  18 ) is a pumping element of the pump.  
   
   
       21 . The apparatus of  claim 10 , wherein this apparatus is a pump, and the at least one component ( 16 ,  18 ) is a pumping element of the pump.  
   
   
       22 . The apparatus of  claim 11 , wherein this apparatus is a pump, and the at least one component ( 16 ,  18 ) is a pumping element of the pump.  
   
   
       23 . The apparatus of  claim 13 , wherein this apparatus is a pump, and the at least one component ( 16 ,  18 ) is a pumping element of the pump.  
   
   
       24 . The apparatus of  claim 16 , wherein this apparatus is a pump, and the at least one component ( 16 ,  18 ) is a pumping element of the pump.  
   
   
       25 . The apparatus of  claim 20 , wherein the pump is a gear pump, and the at least one pumping element ( 16 ,  18 ) is a gear wheel.