| 摘要 |
A process for repairing one or more worn inlet ports on an interior or exterior surface of an extruder die wherein each inlet port provides an opening into an extrusion channel. The worn inlet port has a funnel shape and a diameter greater than that of the extrusion channel. The worn inlet port is repaired by placing a fused silicon oxide insert into one or more extrusion channels so that an external surface of the insert engages the interior surface of the extrusion channel, thereby forming a pocket around the insert between the circumference or perimeter of the worn inlet port and the external surface of the insert. The pocket is filled with molten metal, and the insert prevents the molten metal from entering the extrusion channel. When the molten metal hardens the inserts are removed. New inlet ports are thereby formed having the same diameter as the extrusion channels.
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