Method for the production of a cylinder for a two-stroke engine

Abstract

A method for producing a cylinder for a two-stroke engine, has the following steps: producing a casting core, wherein a central core slide for the cylinder chamber and at least one salt core for a transfer port are produced and the at least one salt core is connected to the central core slide, inserting the casting core into a casting mold, casting the cylinder in a die-casting process, removing the central core slide from the cylinder, wherein the at least one salt core is separated from the central core slide, and flushing the at least one salt core out of the cylinder. The invention further relates to a casting core for such a method.

What is claimed is: 
     
         1 . A method for the production of a cylinder for a two-stroke engine, comprising the following method steps:
 producing a casting core, wherein a central core slide for a cylinder chamber and at least one salt core for a transfer port are produced, and the at least one salt core is connected with the central core slide,   introducing the casting core into a casting mold,   casting the cylinder using a die-casting method,   removing the central core slide from the cylinder, wherein the at least one salt core is separated from the central core slide, and   flushing the at least one salt core out of the cylinder.   
     
     
         2 . The method according to  claim 1 , wherein the at least one salt core is pressed. 
     
     
         3 . The method according to  claim 1 , wherein the at least one salt core is sintered. 
     
     
         4 . The method according to  claim 1 , wherein the at least one salt core is produced using an injection-molding method. 
     
     
         5 . The method according to  claim 1 , wherein the at least one salt core is produced from sodium chloride as a main component. 
     
     
         6 . The method according to  claim 1 , wherein the at least one salt core is produced from potassium chloride as a main component. 
     
     
         7 . The method according to  claim 1 , wherein the at least one salt core is produced using at least one alkali carbonate and/or at least one earth alkali carbonate. 
     
     
         8 . The method according to  claim 1 , wherein the central core slide is produced from a steel material. 
     
     
         9 . The method according to  claim 1 , wherein the cylinder is cast from an aluminum alloy. 
     
     
         10 . The method according to  claim 1 , wherein the central core slide has a cylindrical side wall and at least one recess in the cylindrical side wall and wherein the at least one salt core is connected with he recess in the cylindrical side wall with shape fit and without binders.