Method for producing an extruder barrel assembly

Details Method for producing an extruder barrel assembly Method for producing an extruder barrel assembly

1992-01-10

1993-06-22

Albritton, C. L.

Electric heating

Metal heating

By arc

B23K 1500

Patent

active

052218210

ABSTRACT:
A method of manufacturing an extruder barrel is disclosed which fabricates a barrel in two longitudinal sections and joins the sections together by electron beam welding. In a preferred form, the barrel sections are formed by machining conical recesses longitudinally in each section whereby a complementary bore is defined by the assembled barrel sections. The machined recesses may be formed with spiral, longitudinal or radial grooves. The recesses may be a uniform conical shape, stepped conical or a dual tapered shape.

REFERENCES:
patent: 4182603 (1980-01-01), Knittel
patent: 4185954 (1980-01-01), Murakami et al.
patent: 4308655 (1982-01-01), Berger
patent: 4327859 (1982-05-01), Theysohn
patent: 4385876 (1983-05-01), Scherping et al.
patent: 4553015 (1985-11-01), Ishii et al.
patent: 4875847 (1989-10-01), Wenger et al.

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