Patent ID: 6086819
Filing Date: 2000-07-11
Classification: B21C,C22C,C22F,C23C

Abstract:
A method for manufacturing liners for internal combustion engines made of a hypereutectic AlSi alloy comprising the steps ofmelting a hypereutectic AlSi alloy to obtain an alloy melt;spray compacting the alloy melt to obtain starting structures, wherein contained primary silicon Si particles have a size of from about 0.5 to 20 .mu.m;maintaining the starting structures at an extrusion temperature of from about 300 to 550.degree. C.;extruding the starting structures to round preforms having an outer diameter of less than 120 mm;cutting the round preforms into sections of a desired length; andforming said sections of the preforms by extrusion molding at temperatures of from about 25 to 600.degree. C. to tubular blanks having a wall thickness of from about 1.5 to 5 mm.