EXTRUSION OF REINFORCED COMPOSITE MATERIAL

摘要

A process is described for extruding metal matrix composite materials, e.g. aluminum matrix composites. The problem of inconsistent extrudate surfaces is solved by controlling the extrusion speed such that it is maintained above a lower speed limit below which low speed tearing of the extrudate surface occurs and below an upper speed limit above which incipient melting and consequent speed cracking of the extrudate surface occurs.