Gas atomization spray disc

The invention belongs to the technical field of metal powder production and manufacturing, and particularly relates to a gas atomization spraying disc which comprises an upper spraying disc, a lower spraying disc, an upper cover, a lower cover, a low-pressure high-temperature gas inlet pipe and a high-pressure low-temperature gas inlet pipe. And an annular nozzle is formed between the concave fitting groove and the gas dispersion groove. The gas atomization spraying disc is changed in a limited structure, and the spraying disc and the flow guide pipe are connected into a whole, so that the melt does not generate a distance after flowing out and is immediately broken by airflow. The spraying disc is changed into a double-layer annular nozzle structure, and the double-layer annular nozzle is atomized once by using low-pressure hot gas, so that the problems of blockage and return spraying of the flow guide pipe are solved; and high-pressure cold gas is used for secondary atomization under the large aperture of t