Method of Eliminating Unevenness in Pass-Reversal Thermal Spraying

A method of eliminating unevenness in pass-reversal thermal spraying of a substrate surface by: (a) uniformly thermally spraying the substrate surface by moving a wire fed arc spray gun along the length of the substrate surface at constant spray ,l parameters while using a first wire feed rate and a...

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Bibliographic Details
Published in:Journal of thermal spray technology 2006-06, Vol.15 (2), p.171-171
Main Authors: Cook, D J, Baughman, J R
Format: Article
Language:English
Online Access:Get full text
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Summary:A method of eliminating unevenness in pass-reversal thermal spraying of a substrate surface by: (a) uniformly thermally spraying the substrate surface by moving a wire fed arc spray gun along the length of the substrate surface at constant spray ,l parameters while using a first wire feed rate and a first current level for the gun's power supply, (b) when said spray gun approaches an end zone of the pass length requiring reversal of spray gun movement, reducing the wire feed rate and current by up to about 25% until the spray gun has completed such reversal and has exited from said end zone in the opposite direction, (c) while still continuing thermal spraying, restoring the wire feed rage and current to said first levels, and (d) repeating steps (b) and (c) as the spray gun approaches other or repeated end zones of the substrate length during repeated passes.
ISSN:1059-9630