Multiple torch type plasma spray coating method and apparatus therefor
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United States of America Patent
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Jun 2, 1987
Grant Date -
N/A
app pub date -
May 12, 1986
filing date -
May 13, 1985
priority date (Note) -
Expired
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Abstract
A multiple torch type plasma spray coating method and a multiple torch type plasma spray coating apparatus in which a main torch and an auxiliary torch are disposed so that their center axes may intersect each other, is improved in that laminar flow plasma is generated by the main torch, spray coating material is charged into the plasma flame in the proximity of the outlet of the main plasma torch, the plasma flame is blown onto an object to be treated, plasma is separated from the plasma flame just in front of the object to be treated, and the then left spray coating material is made to deposit onto the object to be treated.
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