Casting mould for casting a cast part and use of such a casting mould

Abstract

The present invention relates to a casting mould for casting a casting, in particular an engine block for a combustion engine, as well as to the use of such a casting mould, comprising mould parts 1, 2, 3 and casting cores 4, 5, 6, 7 produced from moulding sand, and at least one casting core 4, 5, 6, 7 for the formation of a space in the casting. The casting mould according to the invention makes it possible, in a simple manner, for castings to be produced in which at least one locally closely confined section is formed with a microstructure which differs from the remainder of the casting. This is achieved in that a section of the casting core 4, 5, 6, 7 is formed by a chill 9 which is manufactured from a material of which the thermal conductivity is many times higher than the thermal conductivity of the other section 8 of the casting core 4, 5, 6, 7, consisting of moulding sand.

1 . Casting mould for casting a casting comprising mould parts produced from moulding sand and having at least one casting core for the formation of a space in the casting, wherein a section of the at least one casting core is formed by a chill which is manufactured from a material having a thermal conductivity that is many times higher than the thermal conductivity of another section of the at least one casting core, the another section consisting of casting sand. 
   
   
       2 . Casting mould according to  claim 1 , wherein the chill is manufactured from cast iron. 
   
   
       3 . Casting mould according to  claim 1 , wherein at least one mould part forms an assembly surface at the casting, at which an add-on part can be fitted to the casting after solidification, and in that the at least one casting core adjoins the at least one mould part. 
   
   
       4 . Casting mould according to  claim 3 , wherein the thermal conductivity of the chill is many times higher than the thermal conductivity of the at least one mould part forming the assembly surface. 
   
   
       5 . Casting mould according to  claim 1 , wherein at least one element is formed on the chill and the another section of the at least one casting core, by means of which the chill and the another section of the at least one casting core are connected to one another in positive fit. 
   
   
       6 . Casting mould according to  claim 1 , wherein at least one element is formed on the chill, which engages in positive fit into a correspondingly shaped cut-out aperture of at least one mould part. 
   
   
       7 . Casting mould according to  claim 6 , wherein the element is formed as a projection engaging in the at least one mould part. 
   
   
       8 . Casting mould according to  claim 7 , wherein the inner surface of the projection is arranged at an oblique angle in relation to the longitudinal axis of the chill. 
   
   
       9 . Casting mould according to  claim 7 , wherein the projection engages over an assembly surface into the at least one mould part. 
   
   
       10 . Casting mould according to  claim 1 , wherein the at least one casting core is held with the chill by a ram extending into the at least one casting core. 
   
   
       11 . Use of a casting mould formed according to  claim 1 , for the casting of an engine block for a combustion engine. 
   
   
       12 . Use according to  claim 11 , wherein use is made as a casting material of a light metal or a light metal alloy. 
   
   
       13 . Use according to  claim 11 , wherein the at least one casting core of the casting mould carries on an outer surface a liner, forming, in the finished casting, an inner wall of the space to be formed by the at least one casting core. 
   
   
       14 . Use according to  claim 11 , wherein the at least one casting core of the casting mould forms a cylinder chamber of the engine block. 
   
   
       15 . Use according to  claim 11 , wherein an add-on part is a cylinder head.