US2004173334A1PendingUtilityA1

Mold and method for the production of a lost-foam casting model for a light metal cylinder liner

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Priority: May 25, 2001Filed: May 21, 2002Published: Sep 9, 2004
Est. expiryMay 25, 2021(expired)· nominal 20-yr term from priority
Inventors:Karlheinz BingFrank Winger
B22D 19/0081F02F 2200/08B22D 19/0009B22C 7/023F02F 7/00B22C 7/02
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Claims

Abstract

According to the invention a light metal cylinder liner with a surface which facilitates the connection with the surrounding cast material may be produced, whereby the cylinder liner is produced by means of a lost-foam method with a form for production of the cast foam model having a structured surface with height variations of 0.8 to 5 mm, said structuring being for example grooves or longitudinal elevations.

Claims

exact text as granted — not AI-modified
1 . Mold for the production of a lost-foam casting model for a light metal cylinder liner of internal combustion engines, 
 characterized in that    the mold has a structured surface with height variations of 0.8 to 5 mm, at least in partial regions.    
     
     
         2 . Mold for the production of a lost-foam casting model according to  claim 1 , 
 characterized in that    the structured surface is formed by grooves ( 1 ) in the surface of the mold.    
     
     
         3 . Mold for the production of a lost-foam casting model according to  claim 1 , 
 characterized in that    the structured surface is formed by elevations in the surface of the mold.    
     
     
         4 . Mold for the production of a lost-foam casting model according to  claim 1 , 
 characterized in that    the grooves ( 1 ) or elevations run in the axial direction, in the circumference direction, or in a diagonal direction, or in wave shape.    
     
     
         5 . Method for the production of a lost-foam casting model for a light metal cylinder liner of internal combustion engines, 
 characterized in that    the surface of the mold in which the lost-foam casting model is produced has a structured surface with height variations of 0.8 to 5 mm, at least in segments.    
     
     
         6 . Method according to  claim 5 , 
 characterized in that    the surface is structured by means of grooves ( 1 ) or elevations, which run in the axial direction, in the circumference direction, or in a diagonal direction, or in wave shape.

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