Patent ID: 6286210
Filing Date: 2001-09-11
Classification: B21H,B22D,B23P,F02F,Y10T

Abstract:
A method for the production of blanks of a cylinder liner which consist of a light-metal alloy and are to be cast into a light-metal crankcase of a reciprocating engine, comprising:producing and machining a tubular blank to a desired shape and a desired dimension,roughening the blank outer surface to be cast into the material of the light-metal crankcase to activate the surface of the blank to be cast for casting purposes by rolling using a roll or roller which is made of a hard material and is roughened in a sharp-edged manner and which, when rolling on the surface, roughens the blank, andimpressing an excess of fine copper particles on the surface to be treated mechanically into the treated surface to thus implant the copper particles mechanically so that casting the blank in the crankcase can take place immediately after surface activation and the time span between surface activation and casting the blank in can correspond approximately to a cycle time of the process of casting the blank in.