Patent ID: 7942190
Filing Date: 2011-05-17
Classification: B22D,B23K,Y10T

Abstract:
1. A process for repairing one or more inlet ports on an interior or exterior surface of an extruder die wherein each inlet port provides an opening into an extrusion channel and wherein a circumference or perimeter of the inlet port is greater than a circumference or perimeter of an interior surface of the extrusion channel, comprising: 1) placing an insert in one or more inlet ports and extrusion channels so that an external surface of said insert engages the interior surface of the extrusion channel; 2) forming a pocket around said insert between the circumference or perimeter of the inlet port and said external surface of said insert; 3) filling said pocket around said insert with molten metal by metal deposition using welding, wherein said insert prevents said molten metal from entering the extrusion channel; 4) allowing said molten metal to form hardened abrasion resistant metal, and removing said insert from the extrusion channel, thereby forming a new inlet port having the same circumference or perimeter as the interior surface of the extrusion channel and having a cutting edge; and 5) chamfering said cutting edge to facilitate flow through the extrusion channel.