Method of generating a wear-reducing layer on a plastifying worm or screw
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United States of America Patent
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Apr 11, 1995
Issued Date -
N/A
app pub date -
Oct 18, 1993
filing date -
Feb 2, 1991
priority date (Note) -
Expired
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Abstract
A coating of at least 71% by weight molybdenum as applied to the steel base body of a worm or screw for a plastifier or extruder for plastic materials and synthetic resin by introducing the coating material into a laser beam and directing the thus melted coating material and the laser beam onto the surface of the worm or screw to be coated. The melt-metallurgical bond is formed between the coating without distortion or crack formation of the base body.
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