| 摘要 |
In the marking of metal, for example, steel billets, by spraying aluminum through a stencil, the sprayed metal tends to build up on the stencil and render it inoperative. To reduce the metal build-up, a release compound is applied to the stencil surface and the surface is cleaned periodically during use. The release compound can be sprayed-on and cleaning can be effected by a rotary brush, both movable with the metal spray nozzle. |
