ATOMISING APPARATUS AND PROCESS

摘要

Apparatus for the production of powders or spray deposits is provided in which a metal or metal alloy stream is broken up into atomised droplets by primary jets of atomising gas. In order to remove further heat from the atomised droplets, secondary jets are positioned adjacent the primary jets for directing cooling fluid in the form of cry?genic liquified gas at the atomised droplets. The apparatus permits the formation of coarser powders, powders from alloys with a wide solidus/liquidus gap in a shorter atomising chamber, or spray deposits with increased yield of deposited material.