METHOD AND APPARATUS FOR SEPARATING THIN-WALLED, MULTIPORT MICRO-EXTRUSIONS

摘要

A method for separating a thin-walled multiport extrusion into a plurality of micro-tubes (10) for use as single pass lengths in a heat exchanger assembly, the method including the steps of threading the micro-extrusion into a clamping device including first (31) and second (32) sets of clamping blocks which hold the micro-extrusion rigidly while the clamping blocks of the clamping device are drawn in opposite directions on opposite sides of a groove cut (42) in the upper (13) and lower (14) walls of the extrusion, tearing the extrusion apart along cutting lines formed in the upper and lower walls of the extrusion during the separation process.