| 摘要 |
<p>A spray nozzle and system for coating piston rings by producing droplets of molybdenum and stainless steel from these materials in wire form which are sprayed, preferably in equal amounts to coat the outer surfaces of the rings. A plurality of rings are mounted on a body which are moved in a helical path during the spraying. A nozzle is used having a central passage (11) through which the wire is fed and two sets of passages (12, 13) one set for an oxyacetylene mixture and the other for compressed air, with the outlet orifices of the two sets of passages (12, 13) arranged in concentric rings around the central passage (11) outlet orifice.</p> |
